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HomeMy WebLinkAbout07I 2021 Standard Specifications and 2021 Standard Detail Plates Standard Project Manual for Utility and Street Construction Bidding Requirements, Contracting Requirements, and Specifications February 2021 SECTION 00 01 10 TABLE OF CONTENTS Introductory Information 00 01 10 Table of Contents 00 71 00 Contracting Definitions SPECIFICATIONS GROUP GENERAL REQUIREMENTS SUBGROUP Division 01 -General Requirements 01 31 00 Project Management and Coordination 01 33 00 Submittal Procedures 01 40 00 Quality Requirements 01 50 00 Temporary Facilities and Controls 01 57 13 Temporary Erosion and Sediment Control 01 70 00 Execution Requirements Division 02 - Existing Conditions 02 41 13 Selective Site Demolition SITE AND INFRASTRUCTURE SUBGROUP Division 26 - LIGHTING 26 56 19 Roadway Lighting Division 31 - Earthwork 31 10 00 Site Clearing 31 23 00 Excavation and Fill 31 23 13 Subgrade Preparation Division 32 - Exterior Improvements 32 11 23 Aggregate Base Courses 32 11 25 Full Depth Reclamation 32 12 01 Flexible Paving (Municipal Projects) 32 13 14 Concrete Walks, Medians & Driveways 32 16 13 Concrete Curbs and Gutters 32 17 23 Pavement Markings 32 92 00 Turf and Grasses 32 93 00 Trees, Shrubs, Perennials Division 33 - Utilities 33 05 05 Trenching and Backfilling 33 05 17 Adjust Miscellaneous Structures 33 05 28 Conduit for Private Utilities 33 08 30 Commissioning of Sanitary Sewer Utilities 33 10 00 Water Utilities TABLE OF CONTENTS © 2021 City of Cottage Grove, Minnesota 00 01 10 - 1 33 12 12 Water Services 33 31 00 Sanitary Utility Sewer Piping 33 31 14 Sanitary Sewer Services 33 39 00 Sanitary Utility Sewer Structures 33 40 00 Storm Drainage Utilities 33 46 00 Subdrainage Division 34 - Transportation 34 41 05 Traffic Signs and Devices END OF SECTION TABLE OF CONTENTS © 2021 City of Cottage Grove, Minnesota 00 01 10 - 2 SECTION 00 71 00 CONTRACTING DEFINITIONS PUBLIC PROJECTS: Owner: As identified in the Agreement (Section 00 52 10). Engineer: As identified in the Agreement (Section 00 52 10). Whenever reference is made to the Minnesota Department of Transportation Specifications, refer to the Engineer for the Owner. PRIVATE PROJECTS: Owner: Cottage Grove. Engineer: Whenever reference is made to the Minnesota Department of Transportation Specifications, refer END OF SECTION CONTRACTING DEFINITIONS © 2021 City of Cottage Grove, Minnesota 00 71 00 - 1 This Page Left Blank Intentionally SECTION 01 31 00 PROJECT MANAGEMENT AND COORDINATION PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. General requirements for overall Project coordination. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. All Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 PROJECT COORDINATION A. Coordinate all Work with the Engineer and City engineering staff. City engineering staff are located at Cottage Grove City Hall, 12800 Ravine Parkway South. Regular office hours are 8 A.M. to 4:30 P.M. B. Coordinate the Work of the Contract and the Work of others relating to the Project. Work with others to cause the efficient and timely completion of the Work. These responsibilities include, among others, the following: 1. Coordinate activities of all sub-contractors. 2. Inform emergency services (Police, Fire), Post Office, and Schools of traffic situations as appropriate to Project circumstances. 3. Inform City Public Works Department of Project schedule and upcoming activities that will affect their operation. 4. Inform non-municipal utilities (gas, telephone, electric, etc.) of Project schedule to allow for planning of any activities they wish to coordinate with the Project. 5. Maintain and coordinate access needs of adjacent properties. 6. Conform to the requirements of Section 01 33 00. 1.04 UTILITIES A. Notify Gopher State One Call before starting construction in a given area requesting utility locates in the Site: 1. Engineer has requested information at time of construction document preparation on existing private utilities via design locate request through the Gopher State One Call Program. 2. The original version of the information supplied by the utilities is available for viewing at the office of the Engineer. B. Known Information On Private Utilities: Known information regarding the private utilities is depicted on the Drawings and information supplied by utility companies can be viewed at the office of the Engineer by request. PROJECT MANAGEMENT AND COORDINATION © 2021 City of Cottage Grove, Minnesota 01 31 00 - 1 C. Project Utility Sources: Coordinate Work with the following utility owners: 1. City of Cottage Grove Public Works 651-458-2808 2. Gopher State One Call 651-454-0002 D. Owner requires a 48 hour notice for all utility interruptions. E. Coordinate the relocation or protection of all existing facilities. Any costs for such Work shall be the responsibility of the Contractor. 1.05 PERMITS A. Apply for, obtain, and comply with the provisions of the following permits, which the Owner will waive the permit application fee: 1. City of Cottage Grove Right-of-Way Permit B. Comply with the stipulations of the following permits, which have been applied for and will be furnished by the Owner. 1. The following will be furnished on public projects only: a. Minnesota Pollution Control Agency (MPCA) Permit for Sanitary Sewer Extensions. b. Minnesota Department of Health (MDH) Permit for Water Main Extensions. c. MPCA Stormwater Discharges Associated With Construction Activities NPDES General Permit. C. Apply for, obtain, and comply with other permits, licenses, and approvals which may be required for the Project. 1.06 SURVEYING AND CONSTRUCTION OBSERVATION A. Provide Engineer a minimum of 48-hour notice in advance of the need for establishing lines, grades, measurements, grade checks, and observation of Work. B. Engineer will furnish a Resident Project Representative. C. The Contractor is responsible for: 1. Grades and elevations for pedestrian ramps. 1.07 PROJECT MEETINGS A. Administrative Requirements: 1. Project Superintendent or persons designated by the Contractor to attend and participate in the Project meetings shall have all required authority to commit the Contractor to solutions agreed upon in the Project meetings. 2. Engineer will set the time, sites, and prepare the agenda for the meetings. 3. Engineer will prepare meeting minutes and distribute 1 copy to Contractor. Notify Engineer of inaccuracies or discrepancies in the meeting minutes within 5 calendar days of receipt of the minutes. 4. The attendance and cooperation of subcontractors and suppliers may be required. PROJECT MANAGEMENT AND COORDINATION © 2021 City of Cottage Grove, Minnesota 01 31 00 - 2 B. Preconstruction Conference: 1. Provisions for the Preconstruction Conference are set forth in the General Conditions. 2. Requirements for preconstruction submittals are set forth in the General Conditions. Submittal procedures shall be consistent with Section 01 33 00. C. Progress Meeting Procedures: 1. Weekly Status Meetings will be held during weeks when construction activity is occurring on the Project. The meetings will take place at Cottage Grove City Hall. Day and time will be determined at the preconstruction meeting. If no Work is occurring, no meeting will be required: a. Weekly Status Meetings are anticipated to be 30 to 60 minutes in length. b. Furnish a detailed schedule of work for the following week as well as provide an update on construction activity from the previous week for the purpose of allowing the City to provide information on its website as well as communicate to residents within the project limits. c. Provide copies of erosion control inspections completed during the previous week. d. Developers, private utilities, and others may attend to communicate Project issues. PART 2 PRODUCTS Not Used. PART 3 EXECUTION Not Used. END OF SECTION PROJECT MANAGEMENT AND COORDINATION © 2021 City of Cottage Grove, Minnesota 01 31 00 - 3 This Page Left Blank Intentionally SECTION 01 33 00 SUBMITTAL PROCEDURES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. General procedures and requirements for submittals during the course of construction. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. All Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 SEQUENCING AND SCHEDULING A. PART 2 PRODUCTS Not Used. PART 3 EXECUTION 3.01 CONSTRUCTION SCHEDULE A. Submit preliminary schedule and progress schedule consistent with the General Conditions. B. Prepare schedules on 11 inch by 17 inch sheets showing overall sequence of construction. Organize the schedule by work activity. Identify separate stages of each work activity: 1. List work items in chronological sequence. Show beginning and completion dates of each activity. Include all activities with an estimated duration of 3 days or longer. 2. Format schedule as a horizontal bar chart. Provide separate bars for each activity or trade. 3. Provide space for revisions and notations. 4. Identify interrelations between activities. 5. Identify critical path of tasks to be performed. 6. Include estimated times for preparation of submittals by Contractor, processing and review of submittals by Engineer, fabrication, delivery, installation, testing, start-up, instruction of Owner, and clean-up. C. As Work progresses, revise, update, and resubmit schedule as requested by Owner or Engineer. At a minimum, update schedule with each Application for Payment. Show all activities started or finished since previous schedule was submitted and show percentage of completion for each activity. SUBMITTAL PROCEDURES © 2021 City of Cottage Grove, Minnesota 01 33 00 - 1 3.02 EMERGENCY CONTACT LIST A. Before any Work at the Site is started, submit a typed list on 8.5 inch by 11 inch paper outlining 24 hour on-call contacts for the Project. key representatives from the Contractor, subcontractors, and suppliers. Include the following information for each contact: 1. Company name. 2. Contact person(s). 3. Local and mobile phone numbers. 3.03 A. Conform to the requirements of the General Conditions, except as modified herein. B. The minimum sheet size shall be 8.5 inches by 11 inches. Non-legible copies will not be reviewed. C. Submit a minimum of 3 copies of shop drawings, plus the quantity of copies the Contractor wants returned, or submit electronically. Each copy shall contain the following information: 1. Date of submission and date of any previous submittals. 2. Project Title. 3. Names Of: Contractor, subcontractor, supplier, and manufacturer. 4. Identification of product and Specification Section number. 5. Identification of revisions from previous submittals. D. th the requirements of the General Conditions, except as modified herein. E. - submittal as follows: 1. Appears that items covered by the submittal will, after installation or incorporation into the Work, conform to the Contract Documents and appears to be compatible with the design concept of the completed Project as a functioning whole as indicated by the Contract Documents. 2. Appears that items covered by the submittal will, after installation or incorporation into the Work, conform to the Contract Documents and appears to be compatible with the design concept of the completed Project as a functioning whole as indicated by the Contract Documents, except as noted by Engineer. 3. Appears that items covered by the submittal will not, after installation or incorporation into the Work, conform to the Contract Documents and will not be compatible with the design concept of the completed Project as a functioning whole as indicated by the Contract Documents. Work cannot proceed until the submittal is revised and resubmitted conforming to the re-submittal procedures described in the General Conditions. 4. Work covered by the submittal is not complete or it appears that items covered by the submittal will not, after installation or incorporation into the Work, conform to the Contract Documents and will not be compatible with the design concept of the completed Project as a functioning whole as indicated by the Contract Documents. Contractor shall conform to the re-submittal procedures described in the General Conditions. SUBMITTAL PROCEDURES © 2021 City of Cottage Grove, Minnesota 01 33 00 - 2 3.04 TEST REPORTS A. Submit 3 copies of all inspections, tests and approvals required in the Specifications. 3.05 MATERIAL AND SAFETY DATA SHEETS A. Furnish Owner with current copies of Material Safety Data Sheets for all chemicals and products on Site. END OF SECTION SUBMITTAL PROCEDURES © 2021 City of Cottage Grove, Minnesota 01 33 00 - 3 This Page Left Blank Intentionally SECTION 01 40 00 QUALITY REQUIREMENTS PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Information required for conformance to regulatory requirements. 2. Quality assurance. 3. Procedures to measure and report the quality and performance of the Work. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. All Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCE STANDARDS A. Whenever reference is made to the Minnesota Department of Transportation Specifications, such 8 Edition (MnDOT Spec.) and all subsequent revisions and supplements. Engineer for the Owner. 1.04 SUBMITTALS A. Prior to start of Work, submit testing laboratory name for various specified tests for approval by Engineer. B. Laboratory test results or analysis. C. 1.05 WORKMANSHIP A. Comply with industry standards of the region, except where more restrictive tolerances or specified requirements indicate more rigid standards or more precise workmanship. 1.06 TESTS AND INSPECTIONS A. Conform to the requirements of the General Conditions, except as modified herein. B. Notify Engineer 48 hours prior to expected time for operations requiring tests and inspections. C. Provide incidental labor and facilities to obtain and handle samples at Site or source, transport samples to laboratory, and facilitate tests and inspections for storing and curing of test samples. QUALITY REQUIREMENTS © 2021 City of Cottage Grove, Minnesota 01 40 00 - 1 D. On public projects, Owner shall pay for all required tests except as indicated in the Specifications: 1. If, under test, any portion of the work fails to meet contract requirements and is altered, renewed, replaced, tests on that portion so altered, removed, replaced, together with portions of the work as are affected thereby, shall, if so required by Engineer, be repeated within reasonable time and in accordance with the specified conditions and the Contractor shall reimburse Owner for incurred costs of all subsequent tests to ensure compliance. E. Notify Engineer of pit and scale location and other correlated items prior to beginning Work. F. Following substantial completion of the project and in accordance with Standard General Conditions of the Construction Contract, the Engineer and Owner will perform a Final Inspection of the work performed under the contract. Based on that Inspection 1 initial Inspection Notice Report (INR) will be prepared. Contractor shall notify Engineer when items listed in INR have been completed. The Engineer will inspect Contractor's work a second time to verify the items in the initial INR have been completed. If there are items still unacceptable to the Owner/Engineer, a second INR will be prepared. prepare the second and, if needed, subsequent INRs and to verify that the work has been completed will be deducted from payments to the Contractor. 1.07 LABORATORY REPORTS A. After each inspection and test, submit 3 copies of Laboratory Report to Engineer. B. Include: Date issued, Project title and number, name of inspector, date and time of sampling or inspection, identification of product and Specifications Section, location in the Project, type of inspection or test, date of test, results of tests, and conformance with Contract Documents. 1.08 LABORATORY RESPONSIBILITIES A. Test samples and perform field tests. B. Provide qualified personnel. Cooperate with Engineer and Contractor in performance of services. C. Ascertain compliance with the requirements of the Contract Documents. D. When requested by Engineer, provide interpretation of test results. 1.09 LIMITS ON TESTING LABORATORY AUTHORITY A. Laboratory may not release, revoke, alter, or enlarge on requirements of Contract Documents. B. Laboratory may not approve or accept any portion of the Work. C. Laboratory may not assume any duties of Contractor. D. Laboratory has no authority to stop Work. QUALITY REQUIREMENTS © 2021 City of Cottage Grove, Minnesota 01 40 00 - 2 1.10 A. If ngs certifying that products meet or exceed specified requirements executed by responsible officer. 1.11 A. Provide qualified representative to observe field conditions; conditions of surfaces and installation; quality of workmanship; start-up of equipment; and test, adjust, and balance of equipment. 1.12 RIGHT OF REJECTION A. The Engineer, acting for the Owner, shall have the right, at all time and places, to reject any articles or materials to be furnished hereunder which in any respect, fail to meet the requirements of these specifications, regardless of whether the defects in such articles or materials are detected at the point of manufacture or after completion of the work at the site. If the Engineer or RPR, through an oversite or otherwise, has accepted materials or work which is defective or which is contrary to the specifications, such material, no matter in what stage or condition of manufacture, deliver, or erection may be the Engineer for the Owner. PART 2 PRODUCTS Not Used. PART 3 EXECUTION Not Used. END OF SECTION QUALITY REQUIREMENTS © 2021 City of Cottage Grove, Minnesota 01 40 00 - 3 This Page Left Blank Intentionally SECTION 01 50 00 TEMPORARY FACILITIES AND CONTROLS PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Temporary utilities and miscellaneous temporary facilities required during construction. B. Products furnished but not installed under this Section or products installed but not furnished under this Section. C. Related Sections: 1. Section 01 33 00 Submittal Procedures. 2. Section 33 10 00 Water Utilities. 3. Section 33 12 12 Water Services. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Mobilization: Measurement is Lump Sum. This will be considered payment in full for all work and costs of this Bid Item for the entire Project. Partial payment of the Lump Sum Bid Item d on the table below. If the contract unit price for mobilization exceeds 5 percent of the total contract amount, the owner may withhold (on any partial estimate) the portion in excess of 5 percent until the Contractor earns at least 95 percent of the original contract amount. Cumulative Percent of Mobilization Item Paid First Partial Payment 50 Percent of original contract amount earned - 25 70 Percent of original contract amount earned - 50 90 Percent of original contract amount earned -100 100 2. Traffic Control: Measurement is Lump Sum. This shall be considered payment in full for all labor, equipment, and materials associated with the required Traffic Control devices for vehicular and pedestrian traffic for the entire Project. This Bid Item shall include but not be limited to furnishing, installing, maintaining, relocating, and ultimate removal of the Traffic Control devices used over the duration of the Contract or as directed by the Engineer. Also included within this item is temporary pavement markings and detours as shown in the Drawings. percentage based on the table below. If the contract unit price for Traffic Control exceeds 5 percent of the total contract amount, the owner may withhold (on any partial estimate) the portion in excess of 5 percent until the Contractor earns at least 95 percent of the original contract amount. TEMPORARY FACILITIES AND CONTROLS © 2021 City of Cottage Grove, Minnesota 01 50 00 - 1 Cumulative Percent of Traffic Control Item Paid First Partial Payment 50 Percent of original Contract amount earned 25 70 Percent of original Contract amount earned 50 90 Percent of original Contract amount earned 100 100 3. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. , 2018 Edition (MnDOT Spec.). B. The Minnesota Manual on Uniform Traffic Control Devices (MMUTCD), including the Field Manual on Temporary Traffic Control Zone Layouts Latest edition. C. Minnesota Department of Transportation Traffic Engineering Manual. 1.04 SUBMITTALS A. Construction Staging Plan consistent with Section 01 33 00, including the following information: 1. Sequence of construction and traffic control. 2. Streets closed or restricted during any stage of construction. 3. Provisions for routing any detoured traffic as permitted. 4. Specific signs, striping, and other traffic control devices to be utilized. B. Traffic Management Plan consistent with Section 01 33 00, including the following information: 1. Haul and access routes. 2. Permits or applications required by local authorities. 3. Temporary facilities required. 4. Names, addresses, and phone numbers of at least 3 individuals responsible for placement and maintenance of traffic control devic hours per day, 7 days per week during the time any traffic control devices furnished and installed by the Contractor are in place. PART 2 PRODUCTS 1.01 TRAFFIC CONTROL CHANGE A. Sign: 1. Conform to MMUTCD 6F30 - W3-X5, minimum dimensions of 36 inch X 36 inch. 2. Sign material meeting the requirements of Section 34 41 05. B. High Level warning device: 1. Conform to MMUTC 6F62 Orange flag, min 16 square inches surface area. TEMPORARY FACILITIES AND CONTROLS © 2021 City of Cottage Grove, Minnesota 01 50 00 - 2 2. Minimum of two flags per sign. PART 3 EXECUTION 3.01 MOBILIZATION A. Move personnel, equipment, materials, and all other items required to complete the Work at the Site. B. Establish Contractor offices, building, or other facilities necessary for Work on the Project. C. Temporarily hold or relocate utilities and any miscellaneous structures, such as signs, power poles, guy wires, and mailboxes disturbed. 3.02 TEMPORARY A. Regulations of the Minnesota Department of Health as adopted by the City of Cottage Grove prohibits the indiscriminate use of the City's water hydrants by persons other than City personnel. B. Contractors are not allowed to operate or connect to a City hydrant for water usage without a Hydrant Use Permit. A Hydrant Use Permit is available at Public Works Department 8635 West Point Douglas Road. Office hours 7 A.M. to 3:30 P.M. A deposit is required for the use of a hydrant meter. C. No direct connection will be allowed from a hydrant to a tank truck or watering vehicle or hose. Contractor must provide a backflow preventer or fill pipe air gap equal to 2 times the diameter of the fill pipe or hose. D. Clean and thoroughly disinfect all containers and testing equipment to eliminate the possibility of contamination of the system. E. Disinfect water mains and services consistent with Section 33 10 00 and Section 33 12 12. F. The following is a summary of the procedural requirements for installation and testing of City water mains and services. G. Phase 1: Utility projects consisting of sanitary sewer, water main, and storm sewer improvements: 1. Step 1 - Open Connections to Existing Mains and/or Fittings: a. Contractor schedules shutdown and contacts City Water Department a minimum of 48 hours prior to performing Work. At this time, the Contractor is responsible to notify the City Fire Department of the intended shutdown. Contractor must abide with specific requirements for the Project that limits or defines certain hours that the shutdown maybe be performed. b. If water service is to be turned off, the Contractor is responsible to provide written notification to all affected property owners and customers at least 48 hours prior to the actual loss of service. TEMPORARY FACILITIES AND CONTROLS © 2021 City of Cottage Grove, Minnesota 01 50 00 - 3 c. The City Water Department must open and close the existing valves for this part of the operation. If required, the City will be responsible for flushing the existing mains after the connection is completed; however, the Contractor shall assist the City as necessary. 2. Step 2 - Filling Newly Installed Water Mains Prior to Service Installation: a. Contractor contacts City Water Department a minimum of 48 hours prior to performing Work. Engineer reviews with the Contractor the sequence of lines to be filled and which hydrants to open to eliminate trapped air. Taps of 1 inch diameter may be required in dead end plugs to relieve air from the system as part of the Project. b. After the Contractor notifies the City Water Department, the Contractor and Engineer Representative operate valve to slowly fill the mains. c. When filling water mains 12 inches and larger, the City Water Department must be present. d. Contractor is responsible to verify that all existing valves are off and that untested water is not able to enter the City system. The Contractor is further responsible to have all new valves in their system open to assure that all new mains are filled but that the water is contained within the new system. 3. Step 3 - Water Service Installation: a. All corporation stops shall be tapped with the main under water pressure. b. Contractor is responsible to open all corporation stops and curb stops to bleed air and flush any dirt from the copper water line. Afterwards, the Contractor shall close the curb stop and shall crimp the end of the short tail section. During the service installation activity, the Contractor opens and closes existing main valve as necessary to maintain pressure for tapping and bleeding service lines only. The Engineer Representative must be present at the time the Contractor re-pressurizes the mains. c. Engineer checks and verifies that existing valve is opened and closed promptly; however, the Contractor is responsible for this procedure. 4. Step 4 - Pressure and Conductivity Testing: a. Pressure and conductivity testing shall be performed as per the Contract Specifications and shall be performed in that order to assure mains are full of water for conductivity testing. b. All service lines shall be in place and on before the pressure test is administrated. c. Document and provide the City with static pressure readings obtained during the pressure testing procedure. 5. Step 5 - Flushing of Water Mains for Bacteria Test: a. Contractor contacts City Water Department a minimum of 48 hours prior to performing Work. Engineer reviews with Contractor the sequence of lines and valves to operate to thoroughly flush system. b. After notifying the City, the Engineer Representative and Contractor operate existing valve/valves for flushing. c. City Water Department must be present when flushing water mains 12 inches and larger. d. Contractor shall notify the Engineer for the scheduling of water sample for bacteria test, which shall be pulled and tested by a certified independent testing firm. The Contractor will be required to assist the Engineer to operate valves for sampling if necessary. 6. Step 6 - Turning On New Mains into Existing Water System: a. All testing complete - pressure, conductivity, and bacteria accepted by the Engineer. TEMPORARY FACILITIES AND CONTROLS © 2021 City of Cottage Grove, Minnesota 01 50 00 - 4 b. Engineer completes required documentation notifying Public Works Department, Engineering Department, and Building Inspection Department that the new system is turned on or can be scheduled to be turned on. c. Engineer contacts the City Public Works Department which must be present to turn on the new system for mains 12 inches and larger. System shall be turned on within 14 calendar days of completion of passing tests. d. Engineer and Contractor together turns on the new system for mains smaller than 12 inches. System shall be turned on within 14 calendar days of completion of passing tests. H. Phase 2 - Street Construction, Restoration, and Landscaping Work: 1. Contractors, subcontractors, builders, or developers are not allowed to operate or connect to . 2. The sources of City water for street construction, restoration, and landscaping work is as follows: a. Public Works will designated a hydrant for the Contractors as part of Hydrant Use Permit process. b. If hydrant meters are not available or if the City determines the Contractors request for water warrants it, the City will designate an existing hydrant for the Contractors use. The same hydrant use permit, deposit, and water use charge will be applied, as required for the hydrant meter. c. Prices and deposit amounts may change without notice. I. Water Restrictions: Contractor may be required to use non-potable water during a drought period. Owner will assist Contractor in locating source. 3.03 CONSTRUCTION FACILITIES A. Sanitary Facilities: 1. Comply with all governing regulations, including safety and health codes, for sanitary fixtures and facilities. 2. Provide self-contained toilet units, or water and sewer connected temporary toilet facilities, 3. Provide and maintain adequate supply of toilet tissue, paper towels, paper cups, and similar disposable materials appropriate for each facility. Provide appropriate covered waste containers for used material. 3.04 TEMPORARY CONSTRUCTION A. Bypass Pumping: 1. All sanitary flows shall be pumped around areas with no spillage allowed. 2. Any spill needs to be reported as required by law. B. Pumping and Dewatering: 1. Provide draining, pumping, dewatering, and cleaning operations necessary to complete the Work. 2. Provide all necessary pumping to remove all surface water and groundwater from structures as required for the Work. Provide erosion control measures for discharge of water. 3. Protect Site and adjacent property to avoid damage. TEMPORARY FACILITIES AND CONTROLS © 2021 City of Cottage Grove, Minnesota 01 50 00 - 5 3.05 TRAFFIC CONTROL A. General 1. Provide and maintain all traffic control devices in accordance with the approved Construction Staging Plan. All traffic control devices and other protective measures shall conform to traffic control layouts and typical traffic control layouts in the Plans. 2. Flaggers are required to protect construction vehicles during unloading of construction materials. Conform to the requirements of the MMUTCD, the Flagging Handbook included in the Field Manual for Temporary Traffic Control Zone Layouts, and the following: a. While on duty flaggers shall wear hard hats and reflectorized florescent orange vests; b. Flaggers shall be fully clothed when on duty with shirt or blouse, slacks or trouser, and sturdy shoes. 3. Do not park vehicles as to obstruct a traffic control device. The not be allowed within the Project limits, unless so approved by the Engineer. 4. Do not store materials or equipment within 30 feet of through traffic, unless approved by the Engineer. If materials or equipment must be stored within 30 feet of through traffic, the Contractor shall provide barricades or barriers, as directed by the Engineer, to warn and protect traffic. 5. Conduct Work in a manner that will allow access to all properties within and adjacent to the Project by fire, police, and emergency vehicles. 6. Maintain all unpaved surfaces. The surface shall be watered and bladed as directed by the Engineer. 7. Remove traffic control devices at the conclusion of the Work 8. Protect work at all times, including during structure adjustment work. 9. Provide access for emergency vehicles and busses to all residences at all times. B. Traffic Control Devices: 1. Daily inspect and insure that all traffic control devices required by the construction are in accordance with the MMUTCD. Any discrepancy between the actual devices in use and the required devices shall be immediately rectified. At least 1 nighttime inspection shall be made each week. 2. Respond with sufficient personnel, equipment, and/or materials to any request from the Engineer to improve or correct the usage of traffic control devices on or related to this Project within 1 hour of the time of notification or be subject to a $100 per hour deduction from the time of notification for non-attention to protect security and safety. 3. Keep all traffic control signs and devices in a legible condition. This shall include but not be limited to removing grime and dust deposited on any device by traffic, natural causes, or when requested by Engineer. 4. Store at least 10 extra Type 1 barricades with flashers, 5 extra Type III barricades, and 10 extra drums, at a convenient location within the Project limits for use in an emergency, as approved by the Engineer. No direct compensation will be made to the Contractor for furnishing and erecting these traffic control devices. C. Place traffic control with flashers around areas disturbed by removal and replacement of utility structures and concrete curb and gutter: 1. Place at least one Type 1 barricade with flasher or barrel with flasher per panel of curb removed. D. Establish and maintain advisory signs at all entrances to Site: TEMPORARY FACILITIES AND CONTROLS © 2021 City of Cottage Grove, Minnesota 01 50 00 - 6 1. background. E. sign on each side of the disturbed area. F. Closure of a roadway using Type III barricades will require a sufficient number of barricades to span the entire roadway width, at the discretion of the Engineer. 3.06 TRAFFIC CONTROL CHANGE A. General 1. Advanced warning signage must be in place prior to changes in traffic control, including removal of existing traffic control signs (e.g. stop, yield). 2. Advanced warning signs must be located behind the curb. 3. Advanced warning signage must remain in place for 60 days after change in traffic control and removed within 65 days of change in traffic control. 4. After removal complete restoration in accordance with section 32 92 00. 3.07 TEMPORARY BARRIERS AND ENCLOSURES A. Temporary Barriers: 1. Provide temporary covers, enclosures, markers, and barriers as necessary to protect Work. 2. Promptly repair any damage to the Site caused by removal of temporary fencing, including postholes. During removal, at no time shall the Work remain unattended if a dangerous condition exists because of incomplete removal or Site requiring repair. B. Temporary Fence: 1. Install as shown on the Drawings. 2. Maintain and repair fence throughout the duration of the Project. 3. Provide Owner and Engineer with keys or combinations to any locks that may be used to secure fencing gates. 3.08 RESTRICTIONS A. Temporary stockpiling of materials or debris on any City street overnight is not allowed. Proper traffic control is required for stockpiling during the day. B. Overnight parking of equipment will be allowed along city streets. Overnight parking of equipment must meet the following requirements or be subject to Penalty. 1. Proper traffic control is required. 2. Equipment left onsite must be utilized for construction purposes within the project limits a maximum of 48 hours from time of last use unless otherwise approved by Engineer. 3. Equipment left onsite must be parked at locations that will not restrict access to driveways or access for emergency vehicles. 4. All overnight parking locations must be approved of by Engineer. END OF SECTION TEMPORARY FACILITIES AND CONTROLS © 2021 City of Cottage Grove, Minnesota 01 50 00 - 7 This Page Left Blank Intentionally SECTION 01 57 13 TEMPORARY EROSION AND SEDIMENT CONTROL PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Managing storm water runoff and other Project related water discharges to minimize sediment pollution during construction. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Payment at the Bid Unit Price will be considered compensation in full for all Work necessary to complete the Bid Item in full, including installation, maintenance, sediment removal, repairs, and removals. 2. Measurement will be based upon the units as listed below for Bid Items removed, abandoned, or salvaged complete as specified. No measurement will be made of any removals that are not required. The actual quantity installed multiplied by the appropriate Bid Unit Price will be compensation in full for all Work and costs of the following Bid Items. 80- percent partial payment will be made upon installation and 20-percent payment will be made upon removal and restoration: a. Silt Fence: Payment will be by type. Measurement will be by the linear foot along the base of the fence, from outside to outside of the end posts for each section of fence. b. Floatation Silt Fence, Still Water or Moving Water: Measurement will be by linear foot installed. c. Storm Drain Inlet Protection: Measurement will be per each, according to type furnished. Payment shall include installation and maintenance, including cleaning and reinstallation. d. Temporary Construction Entrance: Measurement will be by the cubic yard of material furnished and installed on the Project. e. Erosion Control Blanket: Payment will be by type installed. Measurement will be by square yard. f. Mulch: Measurement will be by the acre of material installed. g. Temporary Hydraulic Matrix: Measurement will be by the acre of material installed. h. Ditch Check: Payment will be by type. Measurement will be by the linear foot. i. Sediment Control Logs: Payment will be by type. Measurement will be by the linear foot. j. Sediment Trap: Shall be considered incidental to the Project. k. Temporary Pipe Downdrains: Measurement will be by the linear foot. Payment shall include rip rap used to provide an outlet. l. Bale Barrier: Measurement will be by the linear foot. m. Flocculants and Polyacrylamides: Measurement will be by dry weight in pounds based on tickets submitted to the Engineer. n. Flocculant Sock: Measurement will be by the each. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 1 o. Rapid Stabilization Methods: 1) Method 1 and 2: Measurement will be by the acre. 2) Method 3: Measurement will be by the 1,000 gals. 3) Method 4: Measurement will be by the square yard. 3. Bid Form for Street Sweeper With Operator and Skidsteer (Bobcat) With Operator: Measurement shall be by the hour of equipment use, based on the actual amount of time spent cleaning street surfaces. However, if the Contractor is careless in their construction operations, they will be required to clean and sweep streets at their own expense. Payment at the Unit Price shall be considered complete compensation for all work associated with the cleaning, including water as directed by Engineer, and disposal of collected materials: a. Anticipate multiple mobilizations to perform this work. 4. Erosion Control Supervisor throughout the duration of the project: No measurement will be made of the various duties performed or of the number of hours required, but all such work will be construed to be included in the lump sum payment, half to be paid after 50-percent of the project is complete and the remainder at closeout of the project. The bid item is for providing an Erosion Control Supervisor to perform all duties as described in Paragraph 1.05.A. 5. Water for Dust Control: a. Water used for the construction of the streets will be considered incidental to the Project. 6. When the contract Bid Item requires maintenance, partial payment for installation will be made no greater than 50-percent of the contract unit price. The remaining partial payment will be made after maintenance and final acceptance by the Engineer. 7. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. B. Related Sections: 1. Section 01 33 00 - Submittal Procedures. 2. Section 32 92 00 Turf and Grasses. 1.03 REFERENCES A. Minnesota Department of Transportation 2018 Edition (MnDOT Spec.): 1. 1717 - Air, Land, and Water Pollution. 2. 2573 Storm Water Management. 3. 2575 Establishing Vegetation and Controlling Erosion. 4. 3733 - Geotextiles. 5. 3882 - Mulch Material. 6. 3884 - Hydraulic Erosion Control Products. 7. 3885 Rolled Erosion Control Products. 8. 3886 - Silt Fence. 9. 3887 - Flotation Silt Curtain. 10. 3890 - Compost. 11. 3892 - Temporary Slope Pipe Drain. 12. 3897 Sediment Control Log. 13. 3898 - Flocculants. 14. 3911 - Calcium Chloride. 15. 3912 - Magnesium Chloride Solution. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 2 B. 1.04 SUBMITTALS A. MP 1. NPDES permit inspection log resulting from weekly Site inspections will be prepared by the Contractor and submitted to the Engineer on a weekly basis. 2. Amendments to the Stormwater Pollution Prevention Plan (SWPPP) for the Project. 3. 4. Provide documentation of certifications for Erosion Control Supervisor and Certified Installers that will be on this project. B. Contractor Prepared Schedules and Plans: 1. Erosion Control Schedule: Conforming to MnDOT Spec. 1717.2.B and submitted each week that construction is active. 2. Site plans in conformance with MnDOT Spec. 1717.2.C: a. Submitted when requested by the Engineer. b. Site plans prepared by Contractor will indicate Contractor operations, erosion and sediment control measures, and a schedule of starting and completion times. C. Certification and Sampling: 1. nforms to the requirements of this Section. The certification shall include or have attached typical results of tests for the specified properties, representative of the materials supplied. 1.05 QUALITY ASSURANCE A. Erosion Control Supervisor: Provide an Erosion Control Supervisor with a valid Minnesota Construction Site Management certification, or approved equal, authorized to represent the Contractor on matters pertaining to Erosion and Stormwater Management, work in public waters and be available to the work site within 24 hours of initial disturbance and daily when work is taking place until final stabilization. The following list describes the duties of the Erosion Control Supervisor: 1. Implements the quality control program. 2. Ensures proper installation, functionality, and maintenance, clean-up, and removal of all 3. Implements the erosion and sediment control schedule. 4. Coordinates the work of subcontractors and ensures the full execution of erosion and sediment control measures for each operation and stage of the work. 5. Oversees the work of subcontractors and ensures the subcontractors undertake erosion and sediment preventative measures at each stage of the work. 6. Prepares the required weekly erosion control schedule and inspections with the dates and times. 7. Attends construction meetings to discuss the erosion control schedule and inspections. 8. Prepares the erosion and sediment control Site Management Plans as required by the contract or as directed by the Engineer. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 3 9. Provides for erosion and sediment control methods for temporary work not shown on the plans. 10. Engine 11. Ensures acquisition of and compliance with applicable permits for borrow pits, dewatering, and temporary work in rivers, lakes, and streams. 12. Ensures the full installation of erosion and sediment control before suspension of the work. 13. Coordinates with federal, state, and local regulatory agencies on resolution of erosion and sediment control issues resulting from the work. 14. Ensures that proper clean-up occurs from vehicle tracking on paved surface locations where sediment leaves the project. 15. Ensures daily compliance with environmental laws, permits, and SWPPP narrative requirements. 16. Ensures the certification of installers for operations in accordance with Paragraph 1.05.B. B. Certified Installers: Provide at least one certified installer with a valid certification obtained through the University of Minnesota Erosion Control Inspector/Installer Certification program, or approved equal to install or direct installation of erosion or sediment control practices as listed below: 1. Seeding. 2. Sodding. 3. Mulching. 4. Silt Fence or other perimeter sediment control device installations. 5. Rolled Erosion Control Practices (RECP) installation. 6. Hydraulic erosion control product installation. 7. Silt curtain installation. 8. Ditch check installation. 9. Compost installation. If the Contractor fails to provide the required certified installer, the Engineer may reject the work as unauthorized. C. If the Project disturbs 1 or more acres of total land area, Co-submittal with the Owner of a complete Activity and the appropriate fees to the MPCA is required. Engineer will complete the online application and fees will be paid as described in Section 01 31 00. 1.06 SEQUENCING AND SCHEDULING A. Install sediment control measures prior to grading activities. B. Schedule and coordinate the Work so that permanent erosion and sediment control BMPs, such as basin construction, rip rap placement, and permanent seeding, are directly incorporated into the supplement permanent erosion and sediment control BMPs with temporary BMPs. Place temporary BMPs when permanent erosion control cannot be achieved. Coordinate construction operations so that erosion and sediment control measures (permanent or temporary) are installed and maintained concurrently with the rest of the Work of the Project. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 4 C. Coordinate and schedule the Work of subcontractors such that erosion and sediment control measures are fully executed for each operation and in a timely manner over the duration of the Project. Develop a chain of responsibility for all subcontractors and operators on the Project to ensure that permit provisions are adhered to. D. Infiltration areas and constructed infiltration systems should not be constructed until the contributing drainage area and/or adjacent construction has been completely stabilized. When this timing of construction is not possible, insure sediment from exposed soil areas of the Project does not enter into the infiltration area or system. E. Stabilization timeframes shall conform to the NPDES General Stormwater Permit for Construction Activity. F. Perform weekly and post-rainfall event inspections in accordance with the NPDES permit. 1. Complete and submit the required weekly inspection log. G. Prior to Project shutdown for the winter or other periods of a week or more, adequately protect Site from erosion and off Site damage by covering exposed soils with mulch and establishing perimeter controls. H. If the Contractor fails to install erosion or sediment measures, the Engineer may withhold payment from related work until the control measures are undertaken by the Contractor: 1. When the Contractor fails to conduct the quality control program, does not conduct the inspection required in the NPDES permit, or fails to take action ordered by the Engineer to remedy erosion or sediment control problems, the Engineer shall issue a Written Order to the Contractor. 2. Respond within 24 hours with sufficient personnel, equipment, materials, and conduct the required Work or be subject to a $1,000 per calendar day deduction for noncompliance. I. Establish permanent turf in accordance with Section 32 92 00 to prevent excessive soil erosion. J. Multiple mobilizations will be required for the various erosion and sediment control items. K. Silt fence shall be removed prior to project closeout and final acceptance. PART 2 PRODUCTS 2.01 SILT FENCE: Conform to MnDOT Spec. 3886. A. Machine sliced in accordance with Standard Detail Plate ERO-1. B. Heavy Duty Wire backed silt fence in accordance with City Standard Detail Plate ERO-3: 1. Wire backed silt fence shall consist of wire mesh backing, posts, geotextile, and fasteners assembled on Site: a. Posts: Steel T-post with welded plate, 1.26 lbs/lineal feet and 5 feet long. Post spacing shall not exceed 6 feet and 24 inches embedment. b. Geotextile shall be woven, either monofilament or tape, 36 inches minimum width, UV stabilized, with apparent opening size 20 to 70 sieve, and 100 lbs minimum grab tensile strength. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 5 c. Wire mesh shall be minimum width of 30 inches, maximum mesh opening of 6 inches, and minimum 14-1/2 gauge wire. d. Geotextile and wire mesh shall be fastened to the posts with a minimum of 3 plastic zip ties of 50 lbs tensile strength. C. Preassembled: Delete MnDOT Spec. 3886.1. 2.02 TEMPORARY CONSTRUCTION ENTRANCE A. Construction Entrance: Conform to Standard Detail Plate ERO-12: 1. Rock Entrance: a. 2 inches minimum clear/washed rock. b. Underlying Geotextile: Conform to MnDOT Spec. 3733, Type IV. c. Minimum Thickness of Rock Placed: 6 inches. 2. Wood Slash Mulch Construction Entrance: a. Raw wood slash only. No chipped-up manufactured wood or chemically treated wood is allowed. b. Splinter material to an average approximate length of 6 inches with a maximum length of 20 inches. Bark and wood splinters less than 2 inches long shall not exceed 20 percent by mass of the material. c. Underlying Geotextile: Conform to MnDOT Spec. 3733, Type IV. d. Minimum Thickness of Mulch Placed: 18 inches. 2.03 MULCH: Conform to MnDOT Spec. 3882. A. Type 1, clean grain straw only. Project specific, refer to MnDOT Spec. for options. B. Hydraulic erosion control products may be used in lieu of mulch with the approval of the Engineer. 2.04 HYDRAULIC EROSION CONTROL PRODUCTS (HECPs) A. Hydraulic Matrix: 1. Mulch: Conform to MnDOT Spec. 3884.2.B.2 2. To be used as part of the Temporary Hydraulic Matrix Bid Item with no seed. 2.05 EROSION CONTROL BLANKET A. Conform to MnDOT Spec. 3885: 1. Category 0 2.06 STORM DRAIN INLET PROTECTION A. Inlet protection for paved streets with concrete curb and gutter: The following methods are acceptable: 1. Conform to the details on the Drawings. 2. Catch Basin Inserts: a. Road Drain by Wimco, LLC (www.roaddrain.com), in accordance with Standard Detail Plate ERO-9. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 6 b. Lange Industries (www.langeindustries.com), or approved equal. c. Filter bag insert subject to Site and approved by the Engineer. B. Inlet protection for non-paved surfaces without curb or areas where vegetation will be established. The following methods are acceptable: 1. Conform to the details on the Drawings. 2. Silt fence box: conform to Standard Detail Plate ERO-7 and ERO-10, or approved equal. 3. Sediment control inlet hat: a. InfraSafe Sediment Control Barrier by Royal Enterprises (http://www.royalenterprises.net/). 4. Rock filter: conform to Standard Detail Plate ERO-8. 2.07 SEDIMENT CONTROL LOGS: Conform to MnDOT Spec. 3897. A. Straw or wood fiber biorolls, 6 to 7 inches in diameter. B. Compost or rock logs, 6 to 8 inches in diameter. 2.08 DITCH CHECKS AND VELOCITY CHECKS A. Conform to MnDOT Spec. 2573.3.F.4 and details in Drawings. 2.09 BALE BARRIERS A. Type 1 mulch conforming to MnDOT Spec. 2573.3.C. B. All bales shall be either bound with wire or tied with nylon string. C. Hardwood stakes shall be 1-1/2 inches by 1-1/2 inches by 36 inches. 2.10 FLOATATION SILT CURTAIN A. Conform to the requirements of MnDOT Spec. 3887, Still Water or Moving Water. B. Curtain depth shall extend to the bottom of the water body. 2.11 DUST CONTROL A. Water clear and free from suspended fine sediment. 2.12 TEMPORARY SLOPE PIPE DRAIN: Conform to MnDOT Spec. 3892 and detail in Drawings. 2.13 TEMPORARY SEED A. Conform to Section 32 92 00. 2.14 DEWATERING SEDIMENT CAPTURE A. General Sizing, configuration, capacity, and selection of dewatering sediment capture techniques shall be based on Site and flow conditions. Submit the means and methods for review TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 7 by the Engineer. Sizing of the sediment capture systems will have to be adjusted such that the ultimate discharge water is not visibly different from the receiving water. 2.15 FLOCCULANTS: Conform to MnDOT Spec. 3898. 2.16 EQUIPMENT A. Street sweeper with mechanism for picking up and containing sweepings. Power broom will not be allowed. The Street Sweeper shall have the minimum bristle length as recommended by the manufacture. B. Skidsteer (bobcat) to assist in street sweeping. PART 3 EXECUTION 3.01 GENERAL A. Comply with all applicable laws, ordinances, regulations, permit requirements, orders and decrees pertaining to erosion/sediment control and stormwater discharge during the conduct of the Work. B. Take necessary precautions against damage to the Project by action of the elements. C. ution Prevention Plan (SWPPP) and take necessary actions to prevent off Site damage resulting from Work conducted on the Project or Project related stormwater runoff. D. Minimize the amount of disturbed land that is susceptible to erosion at any time. Delineate areas not to be disturbed: 1. Exclude vehicles and construction equipment from area not to be disturbed to preserve natural vegetation. 2. Maintain and preserve riparian and naturally vegetated buffer strips (10 feet minimum distance) along water courses. E. Restore all disturbed areas that have not had construction activity for more than 14 calendar days with temporary hydraulic matrix. All costs related to furnishing and installing the temporary hydraulic matrix will be considered incidental to the Project, unless a Bid Item has been provided for it and direction has been given by the Engineer. F. Street sweeping operations must include the application of water to effectively remove fine materials from pavement areas, as directed by the Engineer. The appropriate amount of water shall be applied to eliminate dust as part of the sweeping operations. 3.02 INSTALLATION A. General: Install temporary stormwater management and sediment control devices in conformance with the details, typical sections, and elevations shown on the Drawings. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 8 B. The location of temporary stormwater and sediment control devices may be adjusted from that shown on the Drawings to accommodate actual field conditions and increase the effectiveness of the installation. C. Silt Fence: Conform to MnDOT Spec. 2573.3.B: 1. Install in the locations shown on the Drawings using the machine sliced installation method, unless directed otherwise by the Engineer. 2. Use additional measures, such as rock aggregate, placed along the base of the silt fence where the silt fence geotextile cannot be trenched in, i.e. tree roots, frost, bedrock. 3. Use short sections of silt fence placed in J-hook patterns to: a. Supplement the perimeter silt fence at corner locations and areas where sediment deposition will occur. No more than 100 feet of silt fence shall be installed per 1/4 acre of drainage. b. Break up flow path along silt fence running across contours to be no more than 100 feet between hooks or as directed by the Engineer. 4. Silt fence longer than 600 feet shall be constructed in separate independent units with each unit having a length less than 600 feet. Avoid splices whenever possible. If necessary, make D. Temporary Construction Entrance: 1. Install at locations shown on the Drawings. 2. Construct construction entrance before grading begins on the Site. 3. Inspect construction entrance daily for mud accumulation to minimize vehicle tracking of sediment onto public roadways. Remove fugitive rock or wood mulch from adjacent roadways daily. E. Mulch: 1. For seeded Sites, apply at a rate of 2 tons per acre (4,500 kg/ha). 2. For unseeded Sites, apply at a rate of 2 to 3 tons per acre (4,500 to 6,700 kg/ha), covering the entire soil surface. 3. Distribute mulch evenly by hand or machine and cover the exposed area to a uniform depth. 4. Disk anchor in conformance to MnDOT Spec. 2575.3.D. 5. Anchor mulch immediately to minimize loss by wind or water. F. Temporary Hydraulic Matrix: 1. Apply in conformance with Section 32 90 00 and MnDOT Spec. 2575.3.E, but without seed. G. Slope (Cat) Tracking: 1. Slope tracking consists of operating a dozer up and down slopes so that the cleats of the tracks create grooves perpendicular to the slope. By operating the dozer up and down, the soil surface is firmed and miniature interceptor checks are created. 2. Required on all slopes equal to or steeper than 3:1 (H:V). H. Erosion Control Blanket: 1. Install immediately following seeding in accordance with MnDOT Spec. 2575.3.G, and as modified below. 2. Install per Detail Plate ERO-5 and as shown on the Drawings. 3. Raking or harrowing of soil/seed shall be done before installation of erosion control blanket. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 9 4. Install blanket parallel to the direction of flow. 5. If permanent seeding is not available at the time of blanket installation, this material will have to be removed, re-seeded, and installed again as a permanent erosion control measure. If permanent seeding is available at the time of initial installation, a one-time proper installation is acceptable. I. Storm Drain Inlet Protection: 1. Provide effective storm drain inlet protection over the life of the Project until all sources with potential for discharging to inlets have been paved or stabilized. 2. Place devices so that driving hazards or obstructions are not created. The devices must be cleaned out regularly and all devices must have an emergency overflow to reduce flooding potential. J. Temporary Sediment Basins: 1. Sediment basins shall be excavated as a first priority when grading begins on the Project. The location and outlet configuration are shown on the Drawings. K. Temporary Sediment Traps: 1. Temporary sediment traps are excavated in conjunction with other grading activities. Temporary traps are approximately 2 feet or less in depth with a length to width ratio of 1:2. 2. Effectiveness of sediment traps can be increased by placing a rock weeper at the outlet. L. Temporary Diversion Berm: 1. Temporary diversion berm shall be installed at locations shown on the Drawings. The berm shall be located to minimize damage by construction operations and traffic. 2. Temporary diversion berm shall be installed as a first step in the land-disturbing activity and must be functional prior or in conjunction with upslope land disturbance. 3. The berm shall be adequately compacted to prevent failure. 4. Temporary or permanent seeding and mulch shall be applied to the berm immediately following its construction. M. Temporary Down Drains: 1. When temporary down drains are placed on fill slopes, a temporary earth berm or sandbag barrier shall be constructed as necessary to guide water into the drain. 2. The inlet of a drain and berm system must be properly constructed to channel water into the temporary drain. 3. All temporary drains shall be adequately anchored to the slope to prevent disruption by the force of the water flowing into the drain: a. If the drain consists of plastic pipe, it must be securely anchored to the ground. N. Ditch Checks and Velocity Checks: Reference detail on Drawings. O. Floatation Silt Curtain: 1. Floatation silt curtain shall be installed in locations shown on the Drawings and according to a. "Anchor" and secure to prevent any material from passing beneath, over, around, or through the barrier. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 10 b. Provide sufficient slack to permit the curtain to rise to the maximum expected high water level, including wave action, without being overtopped and still be in continuous contact with the bottom. 2. Place floatation silt curtain as close to the shoreline or work area as possible. Flotation silt curtain shall not be placed across flowing rivers, streams, drainage ditches, or across culvert inlets or outlets. P. Rapid Stabilization: 1. Work to be performed under non-schedulable situations requiring rapid stabilization of small critical areas within 200 feet of surface waters to comply with permit requirements. 2. Methods per MnDOT Spec. 2575.3.M with Seed Mix 22-111. 3.03 MAINTENANCE A. Conform to MnDOT Spec. 2573.3.A, NPDES permit, and as follows: 1. Inspect, maintain, and repair any washouts or accumulations of sediment that occur as a result of the grading or construction. Restoration consists of grade repair, turf re- establishment, and street sweeping of mud and debris tracked from the Site. 2. Inspection of all erosion and sediment control items will take place immediately after each runoff event and at least daily during prolonged rainfall. Make any required repairs immediately. 3. Maintain the temporary sediment control devices until they are no longer necessary and are removed: a. Maintenance consists of keeping the devices functioning properly. b. Repair or replace plugged, torn, displaced, damaged, or non-functioning devices. 4. Upon final acceptance of the Project and establishment of permanent erosion control measures, remove all temporary erosion control measures: a. Catch basin protection becomes property of Contractor. 5. Temporary mulching and temporary seeding/mulching are very effective at controlling erosion. However, these are considered temporary measures. These measures may need to be re-established several times throughout the duration of the Work. 6. Floatation silt curtain shall remain in place until such time that water contained within is free from turbidity: a. Remove curtain within 72 hours after this determination has been made. b. At the completion of the Project, remove floatation silt curtain in such a manner so as to minimize release of sediment adhering to the turbidity curtain. B. Sediment Removal: Conform to MnDOT Spec. 2573.3.P: 1. Remove sediment from erosion control devices when sediment reaches one-third of the height of the devices, restore such features to their original condition. 2. Established areas disturbed by the removal of sediment, will require finish grading and restoration with in-kind materials, such as area disturbed as part of silt fence removal. This work shall be considered incidental to the specific bid item. TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 11 C. Control dust blowing and movement on Site and roads as directed by Engineer to prevent exposure of soil surfaces, to reduce on and off Site damage, to prevent health hazards, and to improve traffic safety. END OF SECTION TEMPORARY EROSION AND SEDIMENT CONTROL © 2021 City of Cottage Grove, Minnesota 01 57 13 - 12 SECTION 01 70 00 EXECUTION REQUIREMENTS PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Requirements for overall execution of the Work and closeout of the Contract for Final Payment. B. Measurement and Payment: 1. All Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.02 SUBMITTALS A. Submit the following items consistent with the Conditions of the Contract and Division 01 Sections: 1. Written Notification of Substantial Completion. 2. Executed Certificate of Substantial Completion. 3. Written Notification of Final Completion. 4. Spare Parts, Operation and Maintenance Manuals, instructions, schedules, warranties, guarantees, Bonds, certificates, certificates of inspection, and other documents. 5. Final Application for Payment, including accompanying documentation. 6. IC-134 Forms. 7. Lien Waivers. PART 2 PRODUCTS Not Used. PART 3 EXECUTION 3.01 EXAMINATION A. Acceptance of Conditions: By commencing Work, Contractor construes acceptance of the adjacent work as satisfactory to receive subsequent work. B. Existing Conditions: Before commencing Work, inspect work completed by others that is adjacent to Work. If adjacent conditions prevent completion of Work, Contractor will not commence Work until the conditions are corrected. C. Inspect each product immediately prior to installation. Remove damaged products from Site. EXECUTION REQUIREMENTS © 2021 City of Cottage Grove, Minnesota 01 70 00 - 1 3.02 GENERAL INSTALLATION REQUIREMENTS A. extent that these instructions are applicable and more explicit or more stringent than requirements indicated in the Contract Documents. B. Secure Work true to line and level, within recognized industry tolerances, with anchorage devices designed and sized to withstand stresses, vibration, and rocking. Allow for expansion and movement of building. C. Install each element of work during weather conditions and Project status to ensure coordination of the Work. Isolate each element of work from incompatible work as necessary to prevent deterioration. D. Record installation details and prepare Record Documents consistent with the General Conditions. 3.03 SITE MAINTENANCE A. Maintain stockpiles, excavations, access roads, and all other work areas free from dust. Employ dust abatement techniques whenever a dust nuisance or hazard occurs, or as directed by Engineer. Comply with local ordinances. B. Protect hazardous work areas and hazardous material storage areas. C. Protect trees, unless specifically indicated on Drawings. D. Clean access roads and haul routes with mechanical street sweeper. E. Maintain and repair any damage to haul roads. Maintenance shall include, but not be limited to, the following: blading, patching, signing, graveling and dust control. This work will be at the ation being made other than the payment received for Contract items. F. Work. Contractor will be given 12 hours from the Notice to clean Site. After the 12 hour period, Owner may correct the defective Work. 3.04 CLEANING AND PROTECTION A. Clean and protect Work in progress and adjoining Work during handling and installation. Apply protective covering on installed Work where it is required to ensure freedom from damage or deterioration. B. Clean and perform maintenance as frequently as necessary throughout construction period. Adjust and lubricate operable components to ensure operability without damage effects. EXECUTION REQUIREMENTS © 2021 City of Cottage Grove, Minnesota 01 70 00 - 2 3.05 CUTTING AND PATCHING A. Complete all cutting, fitting, and patching as necessary to join the new Work to existing conditions. B. Remove or cut existing work only as necessary to join the new work to the existing construction or as required by the Contract Documents. C. Patch defective and incomplete surfaces caused or exposed by Work of the Project. D. Repair any damage to existing conditions and patch to match. E. Existing construction designated by the Contract Documents to remain that is loosened, cracked, or otherwise damaged or defaced beyond repair as a result of Work by the Contractor will be considered unsuitable for the use intended and shall be removed and replaced by the Contractor. 3.06 CERTIFICATE OF COMPLIANCE WITH MINNESOTA STATUTES 290.92 AND 290.97 A. Upon completion of the Project and prior to Final Payment, the Contractor and all subcontractors shall complete Minnesota Department of Revenue Revised Form IC-134. This form, Affidavit for Obtaining Final Settlement of Contract with the State of Minnesota and any of its Political or Governmental Subdivisions, is to be signed by a Department of Revenue representative and forwarded to the Owner. Copies of this form can be obtained by writing to the Minnesota Department of Revenue, Forms Section, Mail Station 1173, St. Paul, MN 55146-1173 or by calling (651) 296-4444. END OF SECTION EXECUTION REQUIREMENTS © 2021 City of Cottage Grove, Minnesota 01 70 00 - 3 This Page Left Blank Intentionally SECTION 02 41 13 SELECTIVE SITE DEMOLITION PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Complete or partial removal and disposal or salvage of at grade, above grade, and below grade structures and miscellaneous items. B. Related Sections: 1. Section 31 23 00 - Excavation and Fill. 2. Section 32 13 14 - Concrete Walks, Medians, and Driveways. 3. Section 32 16 13 - Concrete Curb and Gutters. 4. Section 32 17 23 - Pavement Markings. 5. Section 33 05 05 - Trenching and Backfilling. 6. Section 33 10 00 - Water Utilities. 7. Section 34 41 05 - Traffic Signs and Devices. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Payment at the Bid Unit Price will be considered compensation in full for all Work necessary to complete the Bid Item in full, including removal, salvage, storage, disposal, and reinstallation. 2. Measurement will be based upon the units as listed below for items removed, abandoned, or salvaged complete as specified. No measurement will be made of any removals that are not required. The actual quantity removed multiplied by the appropriate Bid Unit Price will be compensation in full for all Work and costs of the following Bid Items: a. Sawing Concrete Pavement and Sawing Concrete Driveway Pavement: Per lineal foot along the saw cut line as staked, regardless of thickness. b. Sawing Bituminous Pavement (Street or Trail) and Sawing Bituminous Driveway Pavement: Per lineal foot along the saw cut line as staked, regardless of thickness. c. Remove Bituminous Street Pavement: Per square yard without regard to thickness, including integral bituminous curb if applicable. d. Remove Bituminous Trail and Remove Bituminous Driveway Pavement: Per square yard without regard to thickness. e. Remove Bituminous Wedge: Per square yard of bituminous wedge removed, regardless of thickness. f. Mill Bituminous Pavement: Per square yard, according to depth, including off-site disposal. g. Remove Concrete Pavement: Per square yard without regard to thickness. h. Remove Concrete Sidewalk: Per square foot without regard to thickness. i. Remove Concrete Pedestrian Ramp: Per square foot without regard to thickness. j. Remove Concrete Valley Gutter: Per square yard without regard to thickness. k. Remove Concrete Curb and Gutter: Per linear foot, regardless of type. SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 1 l. Remove Concrete Driveway Pavement: Per square yard without regard to thickness. m. Remove Concrete Spillway: Per square yard without regard to thickness. n. Remove Concrete Median: Per square yard, without regard to thickness. o. Remove Hydrant: Per each. p. Remove Catch Basin or Manhole: Per each. Regardless of size of structure. Granular material is incidental to the removal. q. Remove Retaining Wall: Per square yard, measured to existing ground level. r. Remove Pipe or Culvert: Per linear foot of the size and type specified, measured from center of junction fittings, catch basins, or manholes, and will include the length of any aprons. s. Remove Trash Guard from Flared End Section: Per each, according to size and type. t. Remove Sign Post or Barricade: Per each. u. Remove Pavement Markings: Per linear foot, regardless of type or size. v. Remove Pavement Messages: Per each, regardless of type or size. w. Remove and Replace Concrete Curb and Gutter (High Early): A Bit Item has been provided in Section 32 16 13. x. Remove and Replace Valve and Box: A Bit Item has been provided in 33 10 00. y. Abandon Pipe: Per linear foot according to size of pipe, measured from center of junction fittings, catch basins, or manholes, and will include bulk heading and filling the pipe with lean mix backfill. z. Abandon Structure: Per each, regardless of size of structure, and will include furnishing and installing granular material and removal of casting, adjusting rings and top section from Site. aa. Salvage and Reinstall Fence: Per linear foot of the type specified. bb. Salvage and Reinstall Pipe or Culvert: Per linear foot of the type and size specified. cc. Salvage and Reinstall Flared End Section: Per each of the size specified. dd. Salvage and Reinstall Signs: Per each, including posts. ee. Salvage and Reinstall Mailbox: Per each. Payment will include all costs to salvage and re- install the mailbox, including similar footing. ff. Salvage and Reinstall Community Mailbox: Per each. Payment will include all costs to salvage and reinstall the mailbox and removal of existing concrete pad. A separate bid item has been provided for 6 Inch Concrete Mailbox Pad. gg. Temporary Mailbox: Per each. Payment will include all costs to furnish and install a temporary mailbox at a temporary location as determined by the Engineer in the field. hh. Salvage and Reinstall Permanent Barricade: Per each, including sign panel. ii. Salvage and Reinstall Hydrant: Per each. jj. Salvage and Reinstall Valve and Box: Per each, according to size & type. kk. Salvage and Reinstall DIP: Per linear foot, according to size. Sawcutting and removing any extra pipe that is not needed at the new hydrant location will be considered incidental. 3. Homeowners will be responsible for removing irrigation, landscaping, fences, etc. within the right-of-way that are in conflict with the proposed construction of the final street improvements. 4. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 2 1.03 REFERENCES A. Minnesota Department of Transportation 2018 Edition (MnDOT Spec.): 1. 2104 Removing Pavement and Miscellaneous Structures. 1.04 DEFINITIONS A. Remove: To take away or eliminate from the Site by any method selected by the Contractor, including disposal of material. B. Salvage: To dismantle, disassemble, or remove carefully without damage so the item can be re- assembled, replaced, or reused in a workable condition equal to that existing before removal. C. Abandon: To fill, bulkhead, or close off pipes and structures so that no settlement or flow can occur. 1.05 REGULATORY REQUIREMENTS A. Conform to MnDOT Spec. 2104.3.C, with the following modifications: 1. Dispose of all materials designated for removal outside the Site at locations selected by Contractor. 2. Stockpile or temporarily store materials designated for salvage at locations provided by Contractor. 1.06 SCHEDULING A. Prior to starting Work, submit for review by the Engineer and approval by the Owner, a schedule showing the commencement, order, and completion dates of the various parts of this Work. B. Install temporary erosion control, construction fence, barriers, and warning signs prior to removals. C. Fill holes or depressions resulting from removal or salvage immediately. D. Complete the remove and replace concrete curb or sidewalk to allow access to driveway within 7 calendar days, beginning on the day of the removals, or per applicable Milestones in Section 00 52 10, Paragraph 4.02.A.1 E. Provide temporary surface restoration for traffic continuity where removal or salvage operations are completed within streets, driveways, or parking lots. PART 2 PRODUCTS 2.01 LEAN MIX BACKFILL: A. Conform to MnDOT Spec. 2520 SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 3 PART 3 EXECUTION 3.01 GENERAL A. Dispose of all items removed, except for those items identified to be salvaged or recycled. Said disposal shall be in accordance with all laws, regulations, statutes, etc. B. Protect all sawcut edges. Where sawn edge is damaged, the Contractor shall recut sawn edge, remove damaged material, and replace damaged material at no expense to the Owner. C. Perform removal work without damage to adjacent retained work. Where such Work is damaged, patch, repair, or otherwise restore same to its original condition at no expense to the Owner. D. Remove debris from the work area as often as necessary, but not less than at least once at the end of each workday. Debris shall be placed in approved containers to prevent the spread of dust and dirt. E. Execute the Work in a careful and orderly manner with the least possible disturbance to the public and occupants of buildings. F. The Contractor shall notify Engineer immediately if existing street lighting wire is exposed during removal operations. G. Fill holes resulting from removals consistent with Section 31 23 00. H. Remove and replace damaged curb as directed by the Engineer. I. Remove 10 feet of concrete curb and gutter on each side of the catch basin that are adjusted, as directed by the Engineer. 3.02 EXAMINATION A. Meet with owners of signs to determine requirements for salvage, storage, and replacement. B. Develop plan acceptable to Engineer and postal service for maintaining mail service. Temporary relocations of mailboxes will be necessary. 3.03 PROTECTION A. Take all necessary precautions to adequately protect personnel and public and private property in the areas of Work. All Site fencing shall be in place prior to the start of any removal work. B. Remove, store safely, and replace all street signs, traffic control signs, guy wires, mailboxes, posts, wood fence, etc. that may interfere with construction. C. Provide approved barriers or warning signs as necessary. D. Provide and maintain temporary protection of existing structures designated to remain where removal work is being done, connections made, materials handled, or equipment moved. SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 4 E. Do not close or obstruct walkways or roadways. Do not store or place materials in passageways or other means of egress. Conduct operations with minimum traffic interference. F. Take reasonable precautions to limit damage to existing turf. G. Holes or depressions created by removals shall not be left open for more than 1 day. Any hole within 10 feet of sidewalks shall be filled, suitably marked, or covered immediately. H. Avoid disturbance to any material beyond the limits required for new construction. 3.04 SAWING PAVEMENT A. Concrete Pavement: Saw along the removal line to full depth of the existing concrete prior to removal of the pavement. B. Bituminous Pavement: Saw along the removal line to the full depth of the pavement prior to removal of the pavement. C. Provide means and method (such as snapping a chalk line) to establish a straight and uniform sawed line. 3.05 REMOVE CONCRETE PAVEMENT A. Remove in accordance with MnDOT Spec. 2104.3.C, except as modified below: 1. Saw cut concrete pavement and concrete base prior to mechanical pavement removal equipment. Remove concrete in such a manner that the remaining pavement is not damaged. 2. Prior to restoring trench areas, the edges of the trench shall be trimmed back to a vertical face on a straight line which is parallel with the centerline of the trench. 3.06 REMOVE BITUMINOUS PAVEMENT A. Remove in accordance with MnDOT Spec. 2104.3.C, except as modified below: 1. Saw cut bituminous pavement at the removal limits prior to that removal, unless otherwise approved by the Engineer. 2. Remove bituminous in such a manner that the remaining surfacing is not damaged. 3. Prior to restoring trench areas, the edges of the trench shall be trimmed back to a vertical face on a straight line which is parallel with the centerline of the trench. 4. If a reclamation process is used to remove pavement, the resulting reclaimed material could contain diesel range organics (DRO) which must be disposed of in accordance with MPCA requirements. 3.07 REMOVE CURB AND GUTTER A. Excavation of the existing boulevard material to allow for the placement of the new concrete curb and gutter, and specified depth of topsoil/compost shall be considered incidental to the concrete curb removal Bid Item. 1. This will include stripping and disposing of 6 inches of existing vegetation for 6 feet (full curb) or 2 feet (spot curb). SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 5 a. In the full curb area, boulevard trees will need to be worked around and protected per B. Saw cut at removal limits. C. Limits of removal may vary in length and may be in multiple locations. 1. No less than 1/2 panel will remain in place. 3.08 PAVEMENT MILLING A. Bituminous: 1. Saw cut at removal limits prior to milling process. 2. Mill bituminous surface to the depth specified as shown on the Drawings or as directed by the Engineer. The milled surface shall be uniform and consistent, with minimal depth of grooves. 3. Dispose of millings at an approved off-site disposal location. 4. Sweeping with pickup broom or vacuum clean the milled surface shall be incidental to the milling process. Perform sweeping until milled surface is accepted by the Engineer. B. Concrete: 1. Mill surface to the depth specified as shown on the Drawings or as directed by the Engineer. 2. Dispose of millings at an approved off-site disposal location. 3. Sweeping with pickup broom and cleaning the milled surface shall be incidental to the milling process. 3.09 REMOVE CONCRETE SURFACING A. Work includes sidewalks, pedestrian ramps, medians, valley gutters, and driveways. B. Saw cut concrete surfacing prior to removal. C. Remove concrete in such a manner that the remaining surfacing is not damaged. D. When removing existing sidewalks, do not disturb any material beyond the limits required for new construction (assumed as 6 inches maximum beyond and 8 inches maximum below existing grade). E. When removing existing driveways, do not disturb any material beyond the limits required to form for new construction (assumed 12 inches maximum from the back of new Work and 6 inches beyond the edge of new driveways). F. Prior to restoring trench areas, the edges of the trench shall be trimmed back to a vertical face on a straight line which is parallel with the centerline of the trench. 3.10 REMOVE BITUMINOUS TRAILS AND DRIVEWAYS A. Saw cut bituminous surfacing to full depth at the limits of partial removal prior to that removal, unless otherwise approved by the Engineer. B. Remove bituminous in such a manner that the remaining surfacing is not damaged. SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 6 C. Prior to restoring trench areas, the edges of the trench shall be trimmed back to a vertical face on a straight line which is parallel with the centerline of the trench. D. When removing existing trails and driveways, do not disturb any material beyond the limits required to form for new construction (assumed 12 inches maximum from the back of new work and 6 inches beyond the edge of new driveways). 3.11 REMOVE BITUMINOUS WEDGE A. Remove bituminous wedge as shown on the Drawings or as directed by the Engineer. B. Mill bituminous wedge in a manner that does not disturb the bituminous non wear course. 3.12 REMOVE/ABANDON MANHOLES AND CATCHBASINS A. Remove Structure: 1. Remove entire structure, including casting and adjusting rings. 2. Fill void left by structure with suitable material per Section 33 05 05. 3. B. Abandon Structure: 1. Remove casting, adjusting rings, and cone section or manhole section of structure, a minimum of 3 feet below final grade. 2. Place and compact granular material within the remaining in place structure and the excavated area to finish grade. 3.13 REMOVE/ABANDON SECTIONS OF EXISTING PIPE A. Remove Pipe: 1. Remove entire pipe to limits shown on the Drawings or as directed by the Engineer. 2. Fill void left by pipe with suitable material per Section 33 05 05. B. Abandon Pipe: 1. Bulkhead pipe with an 8 inch thick, non-shrink concrete grout plug at the upstream and downstream ends, and at locations as determined by the Engineer. On pipes 18 inches diameter and larger, brick or concrete block masonry may be used with non-shrink grout to construct the bulkhead. 2. Fill with lean mix backfill. C. Remove pipe to be abandoned if the top of pipe is within 3 feet of final surface elevation. 3.14 REMOVE RETAINING WALL A. Avoid damage to sections of wall to remain. B. Dispose of materials off the Site at a predetermined location. C. Remove wall in its entirety, including footings and tiebacks. SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 7 3.15 REMOVE SIGNS AND BARRICADES A. Remove signs and barricades as shown on the Drawings or as directed by the Engineer. B. Owner to salvage sign panel from post prior to removal of post. C. Remove remaining post following salvaging of sign panel by Owner. D. E. Provide Engineer or Owner 48 hours notice prior to removing posts or barricades. 3.16 REMOVE PAVEMENT MARKINGS AND MESSAGES A. Remove to the limits shown on the Drawings or as directed by the Engineer. B. Removal of markings and messages shall be accomplished with suitable sand or water blasting equipment, unless other means are authorized by the Engineer. Grinding is not an acceptable method of removal. The bituminous street surface shall not be damaged by the removal operations. 3.17 SALVAGE AND REINSTALL A. Signs and Barricades: 1. In no case shall a traffic sign or street sign be removed or disturbed by Contractor without prior notification being given to Engineer and then only after satisfactory arrangements have been made for a temporary installation or its disposition: a. Maintain temporary post mounted street identification signage at all times due to its importance to the 911 Emergency Response System. b. Maintain temporary post mounted traffic signage on all streets open to traffic. c. Temporary post mounted installation shall be considered incidental to the Project. 2. Owner to salvage sign panel from post and temporarily store until reinstallation. 3. Remove remaining post following salvaging of sign panel by Owner. 4. Install temporary post mounted signs as described above. 5. Install new post and hardware per Section 34 41 05. 6. Attach salvaged sign panel provided by Owner. 7. Remove signs and barricades that are damaged during construction and replace with new signs as incidental to the Project. 8. Contact the County directly related to all signs within the County right-of-way that may need to be temporarily or permanently removed. B. Mailboxes: 1. Remove and salvage existing mailboxes that interfere with the Work or whose access is restricted by the construction activities. 2. Place at temporary locations as directed by Engineer or as shown on Drawings. 3. Removal, temporary re-installation, and replacement shall occur such that mail delivery is not interrupted. 4. Reinstall in locations as shown on Drawings or as directed by Engineer. SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 8 5. Replace mailboxes, posts, and appurtenances damaged during construction at no charge to Owner. C. Community Mailboxes: 1. Remove and salvage existing mailboxes that interfere with the Work or whose access is restricted by the construction activities. Includes the removal and disposal of the existing concrete pad. 2. Removal, temporary re-installation, and replacement shall occur such that mail delivery is not interrupted. 3. Reinstall in locations as shown on Drawings or as directed by Engineer. A separate bid item has been provided for the 6 Inch Concrete Mailbox Pad. 4. Replace mailboxes, posts, and appurtenances damaged during construction at no charge to Owner. D. Fences: 1. Salvage and store fence and post material where they are not in conflict with the Work. 2. After completion of Work, reinstall fence to the condition existing prior to removal. 3. Install temporary snow fence or similar barrier at the end of the working day while the permanent fence is removed. E. Culverts and Flared End Sections: 1. Where possible, salvage existing pipe in areas to be disturbed by the construction. 2. Reinstall in original condition and location as shown on the Drawings. 3. Maintenance Facility. F. Hydrants, Gate Valves, and Hydrant Leads: 1. Salvage existing hydrants, gate valves, and ductile iron pipe leads at locations shown on the Drawings or as determined by the Engineer. 2. Reinstall in original condition at the location shown on the Drawings or as directed by the Engineer. 3. Reinstall per Section 33 10 00 and the Standard Detail Plates in the Drawings. 3.18 FIELD QUALITY CONTROL A. Salvaged items to be reinstalled shall be of the same shape, dimension, location, and quality of the original item prior to construction. B. Items damaged during removal or salvaging operations shall be replaced with new material of equal type and quality of the damaged item when it was new. 3.19 DISPOSING OF MATERIAL A. Dispose of all materials outside of the Site at disposal location selected by Contractor in compliance with state and local regulations. Burying of material and debris is not allowed within the Site. END OF SECTION SELECTIVE SITE DEMOLITION © 2021 City of Cottage Grove, Minnesota 02 41 13 - 9 This Page Left Blank Intentionally SECTION 31 10 00 SITE CLEARING PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Removal and trimming of vegetation and trees and stripping and stockpiling of sod and topsoil. 1.02 PRICE AND PAYMENT PROCEDURES A. Measure and Payment: 1. Payment at the Unit Price will be considered compensation in full for all work necessary to complete the Bid Item in full. 2. Clearing and Grubbing: a. Measurement will be by physical count of each tree cleared and grubbed having a diameter of more than 3 inches at a point 24 inches above the ground surface. Payment will constitute compensation in full for all removal, disposal work, and costs. b. Measurement will be by lump sum for all Project Clearing and Grubbing. Payment will constitute compensation in full for all removal, disposal work, and costs. c. Measurement will be by acre of trees cleared and grubbed. Measurements shall be made horizontally to points 10 feet outside the trunks of trees or stumps on the perimeter of the area being measured. Any separate area smaller than 1/20 acre will be considered to be 1/20 acre: 1) Whenever isolated trees or stumps are removed outside the areas designated to be cleared and grubbed, the acre payment will be made by: a) Each tree measuring more than 3 inches, but less than 36 inches in diameter, at a point 2 feet above the ground surface, and each stump measuring more than 3 inches, but less than 36 inches, at the point of cutoff will be considered as being 1/20 acre. b) Each tree or stump measuring 36 inches or more in diameter will be considered as being 1/10 acre. 2) Payment will constitute compensation in full for all removal, disposal, and costs. 3. Clearing: a. Measurement will be by physical count of each tree cleared having a diameter of more than 3 inches at a point 24 inches above the ground surface. Payment will constitute compensation in full for all removal, disposal, and costs. b. Measurement will be by acre of trees cleared. Measurements shall be made horizontally to points 10 feet outside the trunks of trees or stumps on the perimeter of the area being measured. Any separate area smaller than 1/20 acre will be considered to be 1/20 acre. 4. Grubbing: a. Measurement will be by physical count of each tree or stump grubbed. Payment will constitute compensation in full for all removal, disposal, and costs. b. Measurement will be by acre of trees or stumps grubbed. Measurements shall be made horizontally to points 10 feet outside the trunks of trees or stumps on the perimeter of SITE CLEARING © 2021 City of Cottage Grove, Minnesota 31 10 00 - 1 the area being measured. Any separate area smaller than 1/20 acre will be considered to be 1/20 acre. 5. Sod Removal: This Work is considered incidental to the other Work of the Contract. 6. Windfall/Deadfall Removal: This Work shall be incidental to the Project with no direct compensation. 7. Brush Removal: This Work shall be incidental to the Project. 8. Stripping and Stockpiling of Soil: This Work shall be considered incidental to other Work in the Contract. 9. Stripping and Offsite Disposal of Soil: This Work shall be considered incidental to other Work in the Contract. 10. Stripping and Stockpiling of Soil: This Work shall be considered incidental to other Work in the Contract. 11. Any tree trimming necessary to perform other work in the Contract shall be considered incidental. 12. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation 2018 Edition (MnDOT Spec.): 1. 2101 Clearing and Grubbing. 2. 2571 Plant Installation and Establishment. 1.04 DEFINITIONS A. Brush: All bushes, shrubs, and other vegetation that can be cut with a brush scythe or mowing machine, including small isolated trees having a diameter of 4 inches or less at a point 2 feet above the ground surface. B. Clearing: Cutting, removing, and disposing of trees, shrubs, bushes, windfalls, and other vegetation in the designated areas. C. Grubbing: Removing and disposing of stumps, roots, and other remains in the designated areas. D. Tree Trimming/Pruning: Cutting broken, damaged, or obstructing branches and installing wound dressing. Includes the uplift of branches along the roadway to allow for street construction. 1.05 SITE CONDITIONS A. Work consists of removing trees generally along the easement lot lines designated for utilities. B. The Drawings do not specifically show all trees to be removed or transplanted. C. Protect specimen trees close to Work that are designated to remain but may be damaged by Work. SITE CLEARING © 2021 City of Cottage Grove, Minnesota 31 10 00 - 2 1.06 SEQUENCING AND SCHEDULING A. Install temporary erosion control measures prior to Work of this Section. B. Complete before or sufficiently ahead of on-going rough grading, excavation, backfill, and compacting for utilities. PART 2 PRODUCTS 2.01 WOUND DRESSING A. Asphalt base tree paint. B. PART 3 EXECUTION 3.01 GENERAL A. Review removals in the field with the Engineer prior to doing Work. Clearing limits will be clearly marked by the Engineer. B. Assume multiple mobilizations for the Work of this Section. C. Stockpile soil to eliminate contamination with other on Site materials. 3.02 CLEARING AND GRUBBING A. Clearing Trees: Cut off, remove, and dispose of trees and brush in the areas designated as a clearing operation. When grubbing is not required, the point of cut off shall be 6 inches above the ground. B. Clearing Brush: Cut even with the ground surface. C. Grubbing: Remove brush, stumps, roots, and other remains to a minimum depth of 6 inches below subgrade for all proposed sections. D. Backfill all depressions resulting from the grubbing operations in accordance with Section 31 23 00. 3.03 TRIMMING AND PRUNING A. As directed by the Engineer, trim trees that are to be saved but interfere with the proposed construction. Paint all cuts with wound dressing. SITE CLEARING © 2021 City of Cottage Grove, Minnesota 31 10 00 - 3 3.04 STRIPPING A. After clearing and grubbing have been completed, strip sod and topsoil to a line 2 feet outside of areas to be occupied by structures, walks, roadways, areas to be excavated or filled, and other areas shown. B. As directed by Engineer, stockpile sufficient topsoil to re-spread at a uniform depth of 6 inches to all disturbed areas identified for seeding or sodding: 1. Do not strip within the drip line (branch spread) of trees identified to remain. 3.05 DISPOSAL LIMITATIONS A. Conform to MnDOT Spec. 2101.3.D, or as modified herein: B. Dispose of all cleared and grubbed material and debris outside the right-of-way at a location selected by the Contractor, except for trees and logs identified to be salvaged. C. Disposal site should be a properly designated landfill area as determined by appropriate governmental agencies or lands under direct control of the Contractor. D. Stripped materials not used for embankments shall be disposed off the Site. E. On Site burial of any debris is not permitted. F. On site burning of debris is not permitted. 3.06 PROTECTION A. Conduct operations so as not to damage surrounding private property. B. Protect trees intended to be saved from injury or defacement during operations: 1. Restrict widths of utility trenches. 2. Provide protective bracing, sheeting, or box to insure safe Work conditions as incidental to Contract. C. Exercise care to keep salvaged material as clean as possible during operations. D. Install temporary fencing at the construction limits and drip lines of trees to be protected prior to any construction activities in order to protect vegetation. END OF SECTION SITE CLEARING © 2021 City of Cottage Grove, Minnesota 31 10 00 - 4 SECTION 31 23 00 EXCAVATION AND FILL PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Excavation and fill for roadways, foundations, channels, ponds, and other areas. B. Related Sections: 1. Section 01 57 13 - Temporary Erosion and Sediment Control. 2. Section 02 41 13 - Selective Site Demolition. 3. Section 31 10 00 - Site Clearing. 4. Section 31 23 13 - Subgrade Preparation. 5. Section 33 05 05 - Trenching and Backfilling. 6. Section 32 92 00 - Turf Establishment. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Measurement and payment shall be at the Bid Unit Price consistent with MnDOT Spec. 2106.4 and 2106.5, except as modified in the following. 2. Excavation - Common (EV): Measurement will be by volume of material in its original position, based on pre-construction cross sections and the design grading grade profile performed by the Engineer. Quantity shall be calculated and computed by the average end area method, using the original cross sections. Payment will include excavation, testing, and disposal of material. 3. Excavation - Common (EV) Trail or Sidewalk: Measurement will be by volume of material in its original position, based measurements performed by the Engineer at the time of construction. Payment will include excavation, testing, and disposal of material. 4. Excavation - Subgrade (EV): Measurement will be by volume of material in its original position, based on pre-construction and post-construction cross sections taken by the Engineer. Quantity shall be calculated by the average end area method. Payment will include excavation, testing, and disposal of material. 5. Excavation Subgrade (EV) Trail or Sidewalk: Measurement will be by volume of material in its original position, based on pre-construction and post-construction cross sections taken by the Engineer. Quantity shall be calculated by the average end area method. Payment will include excavation, testing, and disposal of material. 6. Common Embankment (CV): Measurement will be volume of material compacted in place based on pre-construction cross sections and design grades. Payment will include all costs related to testing, delivery, placement, compaction, and final finishing. 7. Aggregate Backfill: Measurement will be by the ton of material compacted in place as determined from weight tickets delivered to the Engineer. Payment will include all costs to performing the Work in accordance with these Specifications, including shaping, grading, compacting and tolerancing, and include all costs related to furnishing and installing the material complete in place as specified: EXCAVATION AND FILL © 2021 City of Cottage Grove, Minnesota 31 23 00 - 1 a. If the aggregate backfill material is being wasted or placed excessively thick, the Owner reserves the right to deduct quantities that are in excess of plan thickness. Said quantities shall be based on material weighing 110 pounds per square yard of area per inch of thickness. 8. Aggregate Backfill Trail or Sidewalk: Measurement will be by the ton of material compacted in place as determined from weight tickets delivered to the Engineer. Payment will include all costs to performing the Work in accordance with these Specifications, including shaping, grading, compacting and tolerancing, and include all costs related to furnishing and installing the material complete in place as specified: a. If the aggregate backfill material is being wasted or placed excessively thick, the Owner reserves the right to deduct quantities that are in excess of plan thickness. Said quantities shall be based on material weighing 110 pounds per square yard of area per inch of thickness. 9. Boulevard Grading: Payment for this final Boulevard Grading, including placing, grading, and compacting topsoil, shall be made under the Bid Item included in the Bid Form based upon the number of hours actually spent grading: a. Initial backfilling of the curb is considered incidental to the installation of the curb. b. Payment for furnishing of topsoil will be made under the Topsoil Borrow Bid Item, per Section 32 92 00. 10. Boulevard Stripping: Measurement will be per hour of time actually spent stripping, hauling, and disposing of boulevard sod. Payment will include all costs related for performing the work as specified. 11. Haul Excess Reclaimed Material Offsite (LV): Measurement will be by the loose volume of material hauled offsite by means of a truck count. Payment will include all costs related to removing and disposing of material off the Site. 12. Payment for Placing Topsoil Borrow has been made in Section 32 92 00 Turf and Grasses. 13. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation , 2018 Edition (MnDOT Spec.): 1. 2106 - Excavation and Embankment. 2. 3149 - Granular Material. 3. 3877 - Topsoil Material. 4. 3890 Compost. 1.04 SUBMITTALS A. Submit the following items consistent with Section 01 33 00: 1. Gradation tests for borrow materials. 1.05 DEFINITIONS A. The definitions of the different classifications of excavation and borrow material shall conform to MnDOT Spec. 2106.1 and 2106.2, or as modified herein: EXCAVATION AND FILL © 2021 City of Cottage Grove, Minnesota 31 23 00 - 2 1. Excavation - Common: In locations where the design cross section is in a cut section, Excavation common shall be classified as all excavation above the grading grade that has not been classified as another form of excavation in this section. In areas where the design cross section is in a fill section, common excavation shall consist of excavation of topsoil. Excavation - common shall not include payment for pavement removal when a separate bid item is present. 2. Excavation - Subgrade: Excavation below the grading grade that has not been classified as another form of excavation in this Section. 3. Topsoil borrow material shall conform to Section 32 92 00 Turf and Grasses. 1.06 QUALITY ASSURANCE A. Assist testing laboratory by excavating for density tests. Assist testing laboratory with obtaining material samples. 1.07 SEQUENCING AND SCHEDULING A. Perform excavation as soon as possible after sewer and water construction. B. Complete subgrade for streets, driveways, walks, and parking lots immediately after trench backfill and compaction. C. Provide notice by 3:00 P.M. of any aggregate backfill placement for the following day, to allow time for scheduling subgrade inspection and compaction tests prior to any aggregate backfill being placed. D. Aggregate backfill placement shall not occur until the Boulevard has been graded to within 6 inches of finished grade per typical section. E. Complete finish grading of turf areas within 5 calendar days after backfill. PART 2 PRODUCTS 2.01 MATERIALS A. Embankment Materials: Conform to MnDOT Spec 2106.2.B except as modified: 1. Common Embankment: Conform to MnDOT Spec 2106.1.A.6 except as modified: a. Soil which is capable of attaining specified compaction levels, excluding soils which contain organics, contain debris or are potentially expansive (CH or MH per the Unified Soul Classification System). B. Aggregate Backfill: 1. Only Virgin materials allowed. 2. Conform to the following gradation requirements or a deduct will be required per price adjustment tables found on the Grading and Base website. EXCAVATION AND FILL © 2021 City of Cottage Grove, Minnesota 31 23 00 - 3 Sieve Size Percent Passing 3 Inch 100 2 Inch 80 to 100 #40 0 to 50 #200 0 to 12 PART 3 EXECUTION 3.01 GENERAL A. Conform to MnDOT Spec. 2105.3.A, or modified herein: 1. Establish traffic control prior to excavations. 2. Establish the specified erosion control devices according to Section 01 57 13 prior to all excavations. 3. Notify utility companies of progress schedule so they can accomplish relocations, removals, and holding of lines. 4. Perform removals consistent with Section 02 41 13. 5. Strip topsoil consistent with Section 31 10 00. 6. No borrow areas are allowed within City right-of-way. 3.02 PREPARATION OF EMBANKMENT A. Conform to MnDOT Spec. 2106.3.C, or as modified herein: 1. to the placement of the embankment or fill material. 2. Where embankment is to be constructed over swamp, marsh, or other locations where the foundation material is unstable, the foundation shall be excavated to remove all or part of the unstable material. 3.03 EXCAVATION OPERATIONS A. Conform to MnDOT Spec. 2106.3.D, or as modified herein: 1. Perform excavations to the alignment, cross section, and grade as shown on the Drawings and staked by the Engineer. 2. Excavation of unstable material below grade shall be done under the direction of the Engineer as the subsurface conditions are disclosed. 3. Remove muck excavation material so as to minimize disruption to the bottom of the excavation. 4. Notify Engineer immediately of any large boulders or ledge rocks encountered so proper measurement or profile can be made for pay quantities. 5. No solid rock will be allowed within 12 inches of the subgrade. 6. Provide and maintain temporary drainage facilities until permanent facilities are completed. 7. After the roadway excavation is complete and prior to backfilling operations, notify the Engineer 24 hours in advance so all excavation areas can be cross-sectioned to determine quantities. EXCAVATION AND FILL © 2021 City of Cottage Grove, Minnesota 31 23 00 - 4 8. Cut, fill, and grade Site to elevations and contours shown on the Drawings with allowances for pavements, topsoil, and structures. 9. Mining of material in boulevards for use in street construction will not be allowed. 10. Excess reclaimed material above and beyond that is needed for the aggregate base shall be properly disposed of at a location off of the Site: a. The resulting reclaimed material could contain diesel range organics (DRO) which must be disposed of in accordance with MPCA requirements B. On street rehabilitation projects, excavation and disposal of the existing boulevard material to allow for the placement of the new concrete curb and gutter, and specified depth of topsoil/compost shall be considered incidental to the concrete curb removal Bid Item. 3.04 DISPOSITION OF EXCAVATED MATERIAL A. Conform to MnDOT Spec. 2105.3.I, or as modified herein: 1. No disposition of bituminous millings will be permitted, unless thoroughly mixed with other on Site materials. 2. If a reclamation process is used to remove pavement, the resulting reclaimed material could contain diesel range organics (DRO) which must be disposed of in accordance with MPCA requirements. 3.05 PLACING EMBANKMENTS A. Conform to MnDOT Spec. 2106.3.E: 1. Topsoil placement shall conform to Section 32 92 00. 3.06 COMPACTING EMBANKMENTS A. Conform to MnDOT Spec. 2106.3.F, or as modified herein: 1. Compaction required for embankment materials shall conform to the Specified Density Method (nuclear) with the testing location and rates being determined by the Engineer. 2. Backfilling of embankments shall be performed using on Site materials: If the Contractor is unable to meet the specified density requirements using that material due to excess moisture content, they shall immediately notify the Engineer of this condition. 3. Recognize that inclement weather (sometimes heavy) occurs during the construction season and be responsible for protecting the moisture condition of soils during the construction phase. Such protection measures include sloping of exposed surfaces to promote runoff (avoid ponding) and compacting exposed surfaces prior to rain events to minimize infiltration. 4. Compaction required for aggregate backfill materials shall conform to the Specified Density Method (nuclear) with the testing location and rates being determined by the Engineer. 3.07 FINISH OPERATIONS A. Conform to MnDOT Spec. 2106.3.H, or as modified herein: 1. Finish grading of granular borrow, select granular borrow, and aggregate backfill prior for placement of an aggregate base shall conform to MnDOT Spec. 2112.3.E. 2. Grading of the soils beneath the proposed topsoil shall be reviewed and approved by the Engineer prior to the start of the topsoil placement. EXCAVATION AND FILL © 2021 City of Cottage Grove, Minnesota 31 23 00 - 5 3.08 BOULEVARD GRADING A. Backfill Curb After It Has Hardened: 1. Leave the boulevards within a tolerance of 0.3 feet plus or minus of finish grade prior to installation of private underground utilities. 2. Compact the backfill material directly behind the concrete curb to meet the requirements of ." B. Following installation of private underground utilities by others, re-grade entire boulevard area to the right-of-way, including the re-spreading of topsoil stockpiles located adjacent to the boulevard areas: 1. It is intended that this work be done with 1 small dozer. 2. The extent of the final work and the hours of work shall be reviewed with the Engineer prior to any grading being done. 3. Compaction is required as part of the backfill procedure. C. Reconstruction and Final Street Improvement Projects: 1. Grade, shape, and prepare boulevards disturbed by construction for topsoil and sod placement. 2. Place, grade, and compact topsoil, minimum 6 inches thick. 3.09 BOULEVARD STRIPPING A. Final Street Improvement Projects: 1. Strip sod adjacent to bituminous curb prior to reclamation process. 2. Haul and dispose of stripped material off of the Site. 3.10 FIELD QUALITY CONTROL A. The Owner shall have an independent testing laboratory perform the following tests. The location of the tests shall be determined by the Engineer: 1. Aggregate Backfill Material: 1 gradation test per 1,000 tons of material placed. 2. 1 density test, monitored by Specified Density Method (nuclear), per 2,000 square yard of street constructed. END OF SECTION EXCAVATION AND FILL © 2021 City of Cottage Grove, Minnesota 31 23 00 - 6 SECTION 31 23 13 SUBGRADE PREPARATION PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Grading, shaping, and compacting subgrade prior to placing an aggregate base or aggregate backfill materials. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Subgrade Preparation: Measurement shall be by the units of square yards and shall be based on a width of 1 foot behind the back of curb, except as modified below. Payment at the Unit Price shall include all costs related to performing the Work in accordance with these Specifications, including shaping, grading, compacting, and tolerancing: 2. Subgrade Preparation - Trail or Sidewalk: Measurement shall be by the units of square yards and shall be based on a width of 1 foot behind the edge of trail or sidewalk, except as modified below. Payment at the Unit Price shall include all costs related to performing the Work in accordance with these Specifications, including shaping, grading, compacting, and tolerancing: 3. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation 2018 Edition (MnDOT Spec.): 1. 2105 - Excavation and Embankment. 2. 2111 - Test Rolling. 3. 2112 Subgrade Preparation 1.04 SEQUENCING AND SCHEDULING A. Perform subgrade preparation prior to placement of the aggregate base or aggregate backfill material. B. Complete subgrade preparation for streets, driveways, walks, and parking lots immediately after installation of pipe as part of trench backfill and compaction when project includes pipe installation. 1.05 DEFINITIONS A. Subgrade Preparation grading, shaping, and compacting existing soil below the top of subgrade as defined in MnDOT Spec. 2106.1.A.2. SUBGRADE PREPARATION © 2021 City of Cottage Grove, Minnesota 31 23 13 - 1 PART 2 PRODUCTS Not Used. PART 3 EXECUTION 3.01 GENERAL A. Subgrade preparations shall be performed to produce the required density, grade, and cross- section. B. At the end of each day and prior to placement of aggregate base, the contractor shall eliminate surface indentations, including those caused by sheeps foot rollers and tractor cleats, and roll the surface with a steel wheel or rubber tire roller. 3.02 PREPARATION A. If the subgrade is unstable and the instability is due to excessive moisture, the subgrade shall be scarified and dried over a reasonable time period. When the material has reached acceptable moisture limits, the material shall be returned to the roadbed and compacted into place to the proper elevation, If the material continues to be unstable, the Engineer may authorize the removal of the undesirable material as subgrade excavation. B. Test roll subgrade conforming to MnDOT Spec. 2111, or as modified herein: 1. The equipment used for test rolling shall be a Tandom Truck with a gross weight of 45,000 pounds. 2. If rutting is greater than 1/2 inch, subgrade excavation and aggregate backfill will be required. C. Once the subgrade has been test rolled and accepted by Engineer, no traffic or construction equipment shall be permitted to operate directly on the subgrade without the prior approval of Engineer. D. In the event that inclement weather occurs after a test roll, and prior to placement of the aggregate base or backfill material, the test roll shall be voided and a new test roll shall be performed. 3.03 COMPACTION A. Conform to MnDOT Spec. 2105.3.F.1, or as modified herein: 1. For the Specified Density Method, the Engineer will sample and test the soils to determine the Maximum Density and Optimum Moisture. 2. The Owner will have an independent testing laboratory perform the following test, as minimum. The tests will be taken on the compacted subgrade at the location and testing rates designated by the Engineer. Nuclear density testing shall be considered an approved method: a) 1 density test for every 600 feet of street in the upper 3 feet of subgrade (100 percent density zone) at varying distances either side of centerline. Note: This is done if sub- grade excavation is not required. SUBGRADE PREPARATION © 2021 City of Cottage Grove, Minnesota 31 23 13 - 2 3.04 FINISH OPERATIONS A. Subgrade tolerance shall conform to MnDOT Spec. 2112.3.E. END OF SECTION SUBGRADE PREPARATION © 2021 City of Cottage Grove, Minnesota 31 23 13 - 3 This Page Left Blank Intentionally SECTION 32 11 23 AGGREGATE BASE COURSES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Requirements for aggregate base course on a prepared subgrade and gravel driveway patching. B. Related Sections: 1. Section 31 23 00 - Excavation and Fill. 2. Section 32 23 13 - Subgrade Preparation. 1.02 PRICE AND PAYMENT PROCEDURES A. Conform to MnDOT Spec. 2211.5 For Measurement and Payment or as Modified Herein: 1. Aggregate Base, Virgin Class 5: This Bid Item is for aggregate base placed in the streets. Measurement will be by the ton of material compacted in place as determined from weight tickets delivered to the Engineer. 2. Aggregate Base, Virgin Class 5 - Trail or Sidewalk: Measurement will be by the ton of material compacted in place as determined from weight tickets delivered to the Engineer. 3. Finish Grading Street: Measurement will be by the square yard of surface area to be paved. 4. Finish Grading Trail or Sidewalk: Measurement will be by the square yard of surface area to be paved or covered with concrete sidewalk. 5. Shoulder Base Aggregate, Virgin Class 2: Measurement will be by the ton of material compacted in place as determined from weight tickets delivered to the Engineer. 6. Patch Gravel Driveway: Measurement will be by the ton of material compacted in place as determined from weight tickets delivered to the Engineer. Payment will include all costs related to patching the driveway, including excavation and aggregate base. 7. If the aggregate base course material is being wasted or placed excessively thick, the Owner reserves the right to deduct quantities that are in excess of Drawing thickness. Said quantities shall be based on material weighing 110 pounds per square yard of area per inch of thickness. 8. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation 8 Edition (MnDOT Spec.): 1. 2211 - Aggregate Base. 2. 2221 Shoulder Base Aggregate 3. 3138 - Aggregate for Surface and Base Courses. AGGREGATE BASE COURSES © 2021 City of Cottage Grove, Minnesota 32 11 23 - 1 1.04 SUBMITTAL A. Submit gradation report on sample of aggregate base to be used. 1.05 DEFINITIONS A. Finish Grading: Grading, shaping, compacting, and tolerancing of new gravel base, existing gravel base, reclaimed material, existing gravel base that has been supplemented with Aggregate Base, or reclaimed material that has been supplemented with Aggregate Base. 1.06 SEQUENCING AND SCHEDULING A. Construct aggregate base only after all of the following have been completed: 1. Top of subgrade or surface of aggregate backfill has been approved by Engineer. 2. If aggregate backfill is required, a minimum 400 lineal feet of roadway has been placed, compacted, shaped, graded, and checked for conformance to line and grade tolerances. 3. The Boulevard has been graded to within 6 inches of finished grade per typical section. B. Provide notice by 3:00 P.M. of any aggregate base placement for the following day, to allow time for scheduling aggregate backfill compaction testing prior to any aggregate base being placed. C. Finish grading of gravel base prior to placing bituminous surface shall not be performed until initial curb backfilling is complete. PART 2 PRODUCTS 2.01 MATERIALS A. Aggregate Base within Street: 1. Conform to MnDOT Spec. 3138.2.B Virgin class 5 aggregate, except as modified herein: a. The City reserves the right to reject the material in lieu of a deduct. 2. Conform to MnDOT Spec. 3138.2.E, Table 3138-3 for gradation requirements. B. Aggregate Base within Trail, Sidewalk, or paved driveway: 1. Conform to MnDOT Spec. 3138.2.B Virgin class 5 aggregate, except as modified herein: a. The City reserves the right to reject the material in lieu of a deduct. 2. Conform to MnDOT Spec. 3138.2.E, Table 3138-3 for gradation requirements. C. Aggregate surface driveway and shoulder base aggregate: 1. Conform to MnDOT Spec. 3138.2.B Virgin class 2 aggregate. 2. Conform to MnDOT Spec. 3138.2.E, Table 3138-3 for gradation requirements PART 3 EXECUTION 3.01 GENERAL A. Finish Grading: 1. Supplement existing gravel base with Aggregate Base, Class 5, as required to meet specified tolerances. AGGREGATE BASE COURSES © 2021 City of Cottage Grove, Minnesota 32 11 23 - 2 2. Grading and Shaping Aggregate Base shall be considered grading, shaping, compacting, and tolerancing material from 0 to 2 inch depth. 3.02 PREPARATION A. Street: 1. Prepare the subgrade in accordance with Section 31 23 13. 2. Prepare the surface of the aggregate backfill in accordance with Section 31 23 00. 3.03 CONSTRUCTION REQUIREMENTS A. Conform to MnDOT Spec. 2211.3, except as modified herein: 1. Compaction shall conform to 2211.3.D.2.c, Table 2211-3 or Specified Density (100% Standard Proctor Density) as directed by the Engineer. 2. Pneumatic Roller is required for compaction on all aggregate base courses with recycled bituminous (e.g. reclamation projects, etc.). 3. Install aggregate base in accordance with details on Drawings. 4. Deliver weight tickets to Engineer daily. 5. Patch gravel driveways to the thickness shown on the Drawings. 3.04 FIELD QUALITY CONTROL A. The Owner shall perform Agency Verification Testing (VT) by use of an independent testing laboratory to sample the aggregate base materials, determine the moisture/density relationships, gradations, and perform field moisture tests and field density (DCP) tests at locations determined by Engineer. The following are minimum testing rates: 1. 1 gradation test per 500 ton of material placed. a. Contractor shall provide split sample of aggregate base material for gradation test. 2. 1 density test per 2,000 square yards of gravel surface, minimum 3 DCP tests per Project. 3. 1 moisture test per Project during compaction. 4. Density testing (DCP) at the curb lines prior to concrete curb and gutter placement is at the discretion of the Engineer. B. The Owner shall perform Agency Verification Testing (VT) by use of an independent testing laboratory to sample reclaimed gravel base materials, determine the moisture/density relationships, gradations, and perform field moisture tests and field density tests (DCP) at locations determined by Engineer. The following are minimum testing rates: 1. 1 gradation test per 500 ton of material placed. a. Contractor shall provide split sample of reclaimed gravel base material for gradation test. 2. 1 density test per 2,000 square yards of gravel surface, minimum 3 DCP tests per Project. Full depth reclamation (Shear Strength Method) DCP testing if depth of reclaimed gravel is greater than 8 inches. C. The Owner will not all base surface AGGREGATE BASE COURSES © 2021 City of Cottage Grove, Minnesota 32 11 23 - 3 D. Line and Grade Tolerance for Aggregate Base or Reclaimed Aggregate Base: The final aggregate base or reclaimed aggregate base surface will be checked for conformance to specified tolerances . Grade shall be 0.03 feet of grade. Notify Engineer a minimum of 4 E. Line and Grade Tolerance for Trail and Sidewalk: The final aggregate base surface needs to be graded and toleranced. Grade tolerance shall be ±3/8 inch as measured with a 10 foot straight edge. N Quality C 3.05 PROTECTION A. Protect aggregate base until it is covered by surface pavement. B. Keep aggregate base free of ruts and irregularities until covered by surface paving. C. Place water on aggregate base for dust control as required, to eliminate nuisance conditions for adjacent properties. END OF SECTION AGGREGATE BASE COURSES © 2021 City of Cottage Grove, Minnesota 32 11 23 - 4 SECTION 32 11 25 FULL DEPTH RECLAMATION PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Reclamation of the existing bituminous surfacing and a portion of the underlying existing base material. B. Related Sections: 1. Section 31 23 00 - Excavation and Fill. 2. Section 31 23 13 - Subgrade Preparation. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment 1. Full Depth Reclamation: Measurement will be by the square yard, based on the width of the existing pavement, regardless of depth of reclamation required: a. Payment for leveling and compaction of the material immediately after it is reclaimed is to be included in the Bid Unit Price per square yard. b. The Bid Unit Price is to include the motor grader and any water necessary to maintain the reclaimed material until paved. 2. Finish grading and tolerancing of reclaimed material prior to paving shall be per Section 32 11 23. 3. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 SEQUENCING AND SCHEDULING A. Reclamation will be performed at locations shown on the drawings. B. P prior to beginning the reclamation process. C. Initial grading/leveling and interim compaction of the reclaimed material by a motor grader and rubber-tired roller is required immediately following the reclamation process. D. Reclamation and base stabilization process can not be performed while rain is occurring. E. Maintain access to all residents during the reclamation and tolerancing process. PART 2 PRODUCTS 2.01 MATERIALS A. Reclaimed material Pulverized Aggregate: FULL DEPTH RECLAMATION © 2021 City of Cottage Grove, Minnesota 32 11 25 - 1 1. Pulverize the full depth of the existing bituminous material, and underlying base materials until 97-percent or more pass the 37.5mm (1.5 inch) sieve size. B. : 1. The Contractor shall be responsible for gradation control by testing the reclaimed material at a rate of 1 test per 5,000 square yards, with a minimum 1 test per day. 2. Provide the Engineer a verification sample for Quality Assurance testing at the discretion of the Engineer. This shall be a split sample taken by the Contractor. PART 3 EXECUTION 3.01 GENERAL A. Create an aggregate base course composed of the existing bituminous pavement and a portion of the existing underlying base material. B. The reclamation process cannot be performed during rain events. Compact reclaimed material prior to rain events. C. Disposal of the oversize bituminous pieces, within the Right-of-Way, will not be permitted. Any oversize bituminous pieces found in the Right-of-Way shall be removed by the Contractor and at D. Access to all residents shall be maintained during the reclamation and tolerancing process. E. The resulting reclaimed material could contain diesel range organics (DRO) which must be disposed of in accordance with MPCA requirements. 3.02 PREPARATION A. Finish grading, compaction, and tolerancing of the reclaimed material shall be per Section 32 11 23. B. Removal of excess reclaimed material shall be per Section 31 23 00. Remove grass and other vegetation from the edge of the existing pavement to prevent contamination of the pulverized material during the reclamation process. Remove this material per Section 31 23 00. 3.03 COMPACTION A. Compaction of the reclaimed material shall conform to Section 32 11 23, Paragraph 3.03.A. B. Control moisture content of reclaimed material 3 to 7-percent by dry weight during the initial leveling/compaction and final shaping and tolerancing process as incidental to reclamation. C. The maximum reclaimed layer thickness for compaction shall be 8 inches. FULL DEPTH RECLAMATION © 2021 City of Cottage Grove, Minnesota 32 11 25 - 2 3.04 EQUIPMENT A. Notify the Engineer of the equipment to be used at the preconstruction conference: 1. Equipment to be hydrostatically driven. 2. Computerized operation controls. 3. Rotating cutter drum to operate parallel to the existing road surface, providing a uniform section across the entire roadway. 4. Capable of cutting up to a 12 inch depth in 1 pass. 5. Uniformly blend the pulverized material. 6. Equipment exhaust must be on the top and not the side. 3.05 THICKNESS REQUIREMENTS A. Streets: 1. Typical reclaimed section varies. Refer to typical sections on Drawings. END OF SECTION FULL DEPTH RECLAMATION © 2021 City of Cottage Grove, Minnesota 32 11 25 - 3 This Page Left Blank Intentionally SECTION 32 12 01 FLEXIBLE PAVING (MUNICIPAL PROJECTS) PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Hot plant mixed asphalt-aggregate mixtures for wearing and non-wearing courses. 2. Bituminous tack coat. B. Related Sections: 1. Section 01 57 13 - Temporary Erosion and Sediment Control. 2. Section 02 41 13 - Selective Site Demolition. 3. Section 31 23 00 - Excavation and Fill. 4. Section 32 11 23 - Aggregate Base Courses. 5. Section 33 05 17 - Adjust Miscellaneous Structures. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Method of measurement and payment shall conform to MnDOT Spec. 2360.4 and 2360.5, except as modified herein. 2. Bituminous Material for Tack Coat: a. Measured by volume in gallons at 60 degrees F. b. Payment for bituminous material used for Tack Coat includes compensation in full for all costs incidental to the furnishing and application at the Bid Unit Price per gallon. c. Cleaning of all debris and dirt from the previous bituminous surfaces prior to placement of Tack Coat is included in the Bid Unit Price for Tack Coat. d. Payment for the accepted quantity of asphalt emulsion shall be at the Contract price per unit of measure for undiluted asphalt emulsion. e. Payment for tacking exposed edges of existing bituminous surfaces and concrete curb and gutter in conjunction with initial lift placement is considered incidental to the placement of the initial lift. 3. Different types of bituminous mixtures: a. Measured by the weight in tons of material placed and accepted for each specified Bid Item as stated in the Bid Form. Payment shall be made in accordance with the acceptance and payment schedules provided in MnDOT Spec. 2360. b. The Bid Unit Price includes both the bituminous course mixture and asphalt binder material. c. Partial payment will not exceed 70-percent of the total calculated payment until the required testing and product documentation is received and found to be acceptable to the Engineer. d. Payment for the bituminous final lift will not be made until the corresponding signing and pavement markings have been installed. e. No recycled material is allowed in Bid Items labeled Special. FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 1 4. Preparation of Bituminous Initial Lift consists of final clean up of the bituminous initial lift prior to paving final lift: a. Street Sweeper with power pickup broom, including operator: per hour b. Skidsteer (Bobcat), including operator: per hour 5. Patch Bituminous Driveway and Patch Bituminous Trail: Measurement will be by the square yard. Payment will include all costs related to patching the driveway or trail to the thicknesses shown on the Drawings, including excavation, subgrade preparation, aggregate base, and the bituminous wearing course: a. Saw cutting just prior to paving will be paid separately, per Section 02 41 13. b. Removing bituminous pavement will be paid separately, per Section 02 41 13. c. The Bid Unit Price includes both the bituminous course mixture and asphalt binder material. d. Driveway patching requires paving two separate lifts. 6. Remove and Replace Bituminous Driveway and Remove and Replace Bituminous Trail: Measurement will be by the square yard. Payment will include all costs related to patching the driveway or trail to the thicknesses shown on the Drawings, including sawcutting just prior to paving per Section 02 41 13, removing bituminous pavement per Section 02 41 13, excavation and subgrade preparation, aggregate base, and the bituminous wearing course. 7. Patch Bituminous Street: Measurement will be by the square yard. Payment will include all costs related to patching the street to the thicknesses shown on the Drawings, including excavation, aggregate backfill, Class 5 aggregate base, bituminous initial lift(s), tack coat(s), and bituminous final lift: a. Saw cutting just prior to paving will be paid separately, per Section 02 41 13. b. Removing bituminous pavement will be paid separately, per Section 02 41 13. 8. Remove and Replace Bituminous Street: Measurement will be by the square yard. Payment will include all costs related to patching the street to the thicknesses shown on the Drawings, including sawcutting just prior to paving per Section 02 41 13, removing bituminous pavement per Section 02 41 13, excavation and subgrade preparation, aggregate backfill, Class 5 aggregate base, bituminous initial lift(s), tack coat(s), and bituminous final lift. 9. Bituminous Wedge: Measurement will be by weight in tons of material placed and accepted. Payment will include all costs related to constructing the Bituminous Wedge per the Standard Detail and as specified: a. Silt fence placed behind the curb and adjacent to the Bituminous Wedge will be paid per Section 01 57 13. 10. Bituminous sawcutting or milling that is required for joint construction will be paid per Section 02 41 13: a. Removal of temporary bituminous ramps is considered incidental to the sawing bituminous pavement or milling Bid Item. 11. Bituminous Incentive and Disincentive Allowance: The allowance indicated in the Bid Form is bid items. The final incentive and disincentive will be based on the actual unit prices in the contract award. Payment will be based on the actual incentive or disincentive determined under MnDOT Spec. 2360.3.D.1.q, for bituminous placed per Paragraph 3.07. Example: if the allowance in the Bid Form is $10,000 and the incentive is determined by the Engineer to be $2,500, a quantity of 0.25 will be paid under the lump sum bid item, resulting in a total price of $2,500 (i.e. $10,000 x 0.25 = $2,500). Similarly, if a disincentive is determined to be $1,525, a quantity of -0.1525 will be paid, resulting in an amount of -$1,525 (i.e. $10,000 x -0.1525 = - $1,525). FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 2 12. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation 8 Edition (MnDOT Spec.): 1. 2360 Plant Mixed Asphalt Pavement. a. ngineer". 2. 2357 - Bituminous Tack Coat. 3. 3139 Graded Aggregate for Bituminous Mixtures. B. American Society of Testing and Materials (ASTM): 1. ASTM D2950 - Standard Test Method for Density of Bituminous Concrete in Place by Nuclear Methods. 1.04 SUBMITTALS A. Submit mixture design report to the Engineer. Conform to MnDOT Spec. 2360.2.E.5.b(2), 2360.2.E.9, 2360.2.F, and 2360.2.G.8. B. Submit mix design report for all projects, regardless of the size of the project. C. Submit Q/C results in accordance with MnDOT Spec. 2360.2.G.1, 2360.2.G.4 recent Materials Control Schedule. D. Submit Q/C testing for Class B aggregates included in mix designs based on the following schedule: 1. For every 5,000 tons of bituminous mixture placed on the project, or for mix placed 30 days after the previous submittal, perform and submit the following Q/C testing from Class B aggregate stockpile: a. Soundness Testing (ASTM C 88) b. Loss by Abrasion and Impact (ASTM C 131) 2. Aggregate testing requirements shall be submitted on a per project basis. Individual tests and submittals are required for each project. E. Submit final lift paving schedule while providing a continuous operation to the extent feasible. 1.05 DEFINITIONS A. alt Pavement (RAP), MnDOT 3139.2.B.11; Recycled Asphalt Shingles (RAS), MnDOT 3139.2.B.8; Ash, MnDOT 3139.2.B.10; and Crushed Concrete and Salvaged Aggregate, MnDOT 3139.2.B.9. B. Irregular Paving: 1. -de-sac. 2. Portion of pavement that extends beyond the standard width of a street based on the width shown on the typical sections provided in the plan set. FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 3 C. Street Paving: Paving of any portion of roadway except those defined as Irregular Paving. 1.06 SEQUENCING AND SCHEDULING A. Engineer will schedule Correlation Process for Nuclear Gauge Density Testing with the Prime Owners Verification Tester a minimum of 1 week prior to the first day of paving. B. Prime Contractor is responsible for scheduling an onsite pre-paving meeting with the Owner, Engineer, Paving Subcontractor (if appropriate), including the Paving Forman a minimum 24 hours prior to the paving operations. C. Aggregate base and concrete curb and gutter to be completed and approved by the Engineer prior to placement of bituminous surfaces. D. Concrete pedestrian ramps to be completed and approved by the Engineer prior to placement of bituminous trail. 1. Concrete pedestrian ramps must be protected during paving of bituminous trail. Method of protection must be approved by the Engineer. E. Concrete valley gutters to be completed and approved by the Engineer prior to placement of bituminous street. 1. Concrete valley gutters must be protected during paving of bituminous street. Method of protection must be approved by the Engineer. F. Provide notice by 2:00 P.M. the day prior to any bituminous placement to allow for scheduling of the following activities. Notice must include mix designation, start time of placement, plant producing mix, and Foreman onsite during paving operations: 1. Aggregate base DCP tests, per Section 32 11 23, prior to any bituminous being placed. 2. Inspection of paving operations by a City representative, no paving will be allowed or accepted without inspection. 3. Bituminous plant testing if required. G. Provide 48 hour notice for scheduling and noticing of the residents prior to paving operations. H. Sweeping of pavement must occur immediately prior to placement of the final lift. Swept surface must be approved by the Engineer prior to the placement of the final lift. I. Adjust structures prior to placement of bituminous wedge or bituminous final lift as specified in Section 33 05 17. J. Bituminous Wedge Placement: 1. Minimum 6 days after placement of first lift of bituminous pavement. 2. Completed prior to Private Utility Installation. K. Sidewalks, trails, and final restoration must be completed prior to final lift paving. L. Sequence Work to avoid construction traffic on the final lift. FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 4 PART 2 PRODUCTS 2.01 MATERIALS A. Mixture Designation: Conform to MnDOT Spec. 2360.1.A, except as modified in the typical section and Bid Form: 1. Residential Streets (Low Volume): a. Wearing Course (Final Lift) = SPWEA330C, Special. b. Wearing Course (Initial Lift) = SPWEA330C. 2. Trails: Wearing Course = SPWEA230C 3. Driveways and Patching: Wearing Course = SPWEA230B 4. Bituminous Wedge: Non Wear Course = SPNWA230B B. Conform to MnDOT Spec. 2360.2 and 3139 except as modified herein: 1. Recycled Asphalt Shingles (RAS), MnDOT Spec. 3139.2.B.8, are not allowed in the wearing course mixtures. 2. Ash, MnDOT Spec. 3139.2.B.10 will not be allowed in the wearing course mixtures. 3. C. Bituminous Tack Coat: 1. Bituminous Material: Conform to MnDOT Spec. 2357: a. Emulsified Asphalt, Cationic, CSS-1 or CSS-1h. D. Asphalt Binder Material: Conform to MnDOT Spec. 2360.1A, Table 2360-2; MnDOT Spec. 3151 and as identified in the Mix Designation. E. Mixture Design: Conform to MnDOT Spec. 2360.2.E. F. Mixture Quality Management (Quality Control/Quality Assurance): Conform to MnDOT Spec. 2360.2.G., except as modified herein: 1. Quality Assurance testing will be completed at the discretion of the Engineer, testing rates will not exceed Table 2360-10 and 2360-11. G. Bituminous Patching: 1. Use pavement design as noted in Drawings or match existing pavement design for each lift. PART 3 EXECUTION 3.01 GENERAL A. Conform to the requirements of MnDOT Spec. 2360.3, except as modified herein. B. Review the proposed paving sequence with the Engineer prior to placement of each bituminous course (lift). C. The proposed sequence shall address the: longitudinal seams, compaction, traffic control, hauling routes, and placement of pavement markings. FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 5 D. Preparation of Bituminous Lower Lift: 1. Final clean up of the bituminous surface with the use of a power pickup broom and front end loader/skidsteer. 2. Street sweeping operations must include the application of water to effectively make the pavement free and clear of material and debris to allow for successful application and adhesion of bituminous tack coat to the pavement. The appropriate amount of water shall be applied, eliminating dust as part of the sweeping operations. E. Bituminous Driveway Patching: 1. Paving requires two lifts. 2. Tack coat prior to final lift. 3. Protection of concrete curb, incidental to placing both lifts of bituminous. F. Adjust structures conforming to the requirements of Section 33 05 17: 1. Have a valve wrench on site during the paving operations for the purpose of final adjustments to the valve boxes to meet the specified tolerances. This work shall be considered incidental to the valve box adjustment bid item. G. Joints: Where new construction meets existing bituminous surfacing, the existing surface shall be uniformly milled or saw-cut straight, and bituminous tack coat applied prior to placement of each bituminous course (lift): 1. For joint construction, an existing bituminous surface shall be considered to include any bituminous surface not paved on the same day as the new construction. The Owner may require milling or sawcuting on surfaces paved the same day, if, in the opinion of the Owner, the mix has cooled to a point where a new milled or sawed edge is necessary 2. Construct 2 foot wide (min.) ramp where new construction does not match existing construction (i.e. initial lift to final lift). 3. Longitudinal Joints: Utilize Maryland Joint construction method. H. Finish bituminous surface shall be flush with concrete surface at curb depression for pedestrian curb ramps. 3.02 RESTRICTIONS A. Conform to MnDOT Spec. 2360.3.A, except as modified herein. B. Following the street sweeping operations, the condition of the pavement surface must be approved by the Engineer prior to paving. C. Existing bituminous surfaces must be dry prior and during placement of any bituminous pavements. D. Bituminous surfaces shall not be constructed on frozen gravel base. E. Final Lift shall not be placed when the air temperature in the shade and away from artificial heat is 50 degrees or less. 3.03 EQUIPMENT FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 6 A. Conform to MnDOT Spec. 2360.3.B. B. Nuclear Gauge: 1. Troxler or Seaman Gauge capable of completing required tests. 2. Contractor must provide a minimum of two gauges designated for the project. 3. Nuclear gauges must be calibrated by the manufacturer or an approved calibration service within 12 months of its use on the project. Retain a copy of t certificate with the gauge. 4. Contractor must conform to all Minnesota Department of Health requirements. 3.04 REQUIRED PERSONNEL A. Contractor must designate a Quality Control Tester to perform Nuclear Gauge Density Testing. Quality Control Tester must be able to provide proof of a minimum of 25 hours field experience performing Nuclear Gauge Testing. 3.05 TREATMENT OF SURFACE A. Bituminous Tack coat shall conform to MnDOT Spec. 2357, except as modified herein. B. Restrictions: 1. The tack coat shall not be applied when the road surface is wet or when the weather conditions are unsuitable. 2. The area for tack coat application shall be limited as directed by the Engineer. 3. The Contractor shall have sole responsibility of claims of tack coat on personal property due to lack of notification or signage of the area being tack coated. 4. No tack coat prior to placement of bituminous wedge. 5. Cleanup of tack coat material tracked and build up onto adjacent roadway surfaces by truck hauling shall be performed on a daily basis, or as directed by the Engineer. C. Distributor Equipment: Conform to MnDOT Spec. 2360.3.B.2.d, except as modified herein: 1. The Engineer at anytime can direct the Contractor to perform test strip to determine if the equipment is applying the specified application rate for the emulsion. All cost associated with this test strip is considered incidental to the tack application. D. Road Surface Preparation: Conform to MnDOT Spec. 2357.3.C. E. Application: 1. At a uniform rate conforming to MnDOT Spec. 2357.3.D, but not greater than 0.07 gallon per square yard, new asphalt. 2. Along the front edge of the concrete curb and gutter, prior to placement of bituminous initial lift. 3.06 CONTRACTOR QUALITY CONTROL A. The first paragraph of MnDOT 2360.2.G.4.b is revised as shown below: 1. Take QC samples at random tonnage or locations, quartered from a larger sample of mixture. Sample randomly and in accordance with the Schedule of Materials Control. Determine random numbers and tonnage or locations using the Bituminous Manual Section 5-693.7 FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 7 Table A or ASTM D 3665, Section 5, or, an Engineer approved alternate method of random number generation. Sample either behind the paver or from the truck box at the plant site. Other sampling locations can be approved by the Engineer. The Contractor must decide and notify the Engineer where samples will be taken before production begins. The Contractor and Engineer must both agree to a change of sampling location once production has begun. Sample mixture from behind the paver. Sampling from the truck box at the plant site is not allowed unless approved by the Engineer. In addition to the QC sample, the Contractor will also bring an additional split of the mixture sample to the plant site and store for the Department for 10 calendar days. The procedure for truck box sampling is on the Bituminous Office website. The Contractor will obtain at least a 130 pound \[60 kg\] sample. Split the sample in the presence of the Inspector. The Inspector will retain possession of the Agency portion of each split sample and randomly submit a minimum of one sample, on a daily basis, to the District Laboratory for Verification testing (see 2360.2.G.3). Store compacted mixture specimens and loose mixture companion samples for 10 calendar days. Label these split companion samples with companion numbers. 3.07 PAVEMENT DENSITY A. General: 1. This contract will utilize Nuclear Density Gauge testing for density determination for all pavement except as noted: a. The first paragraph of MnDOT 2360.3.D.1 is hereby deleted and replaced with the following: 1) Compact the pavement to at least the minimum required maximum density values in accordance with Table 2360-19. b. Modify Table 2360-21 as indicated below: Daily Production (Tons) Lots 0 to 1,000 1 1,001 to 2,000 2 2,001 to 3,600 3 3,601 to 5,000 4 5,001 + 6 c. Pathways, Driveways, Patching shall conform to MnDOT Spec. 2360.D.2. 2. All density testing must be done as soon as practical after the compaction process and before opening to traffic. B. Longitudinal Joint Density, delete the following: 1. 2360.3.D.1.n Longitudinal Joint Density. 2. 2360.3.D.1.p Shoulders. C. Nuclear Gauge Correlation: 1. The QC (Contractor), Verification (Owner), and back-up gauges used on the project must complete the correlation process a minimum of one week prior to paving operations. 2. Engineer shall select a section of existing pavement to be used as the test site for the correlation process. The section does not have to be the same mix design. FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 8 3. Correlate all gauges to be used for density measurement on the project (minimum of two QC & two Verification). a. QC and Verification gauges will be correlated with Correlation Core results to determine a correction factor for each gauge. Correlation Cores will be obtained and tested by the Owner. 4. All results for the Correlation Process must be recorded on the Nuclear Gauge Correlation form. The Owner will complete the form once core testing is complete, then will send it to the Contractor. The form should be completed and submitted to the Engineer prior to the first day of paving. D. Reference Site Monitoring: 1. After performing the gauge correlation process, the Engineer shall establish a project reference site. Reference site shall consist of a flat surface of concrete, asphalt or other material that will not be disturbed during the duration of the project and must be clearly marked. Perform reference site monitoring of all QC and QV gauges used on the project at the reference site. 2. See Reference Site Summary Instructions for the process. a. Complete Reference Site Summary form and Daily Check Reference Record form as required. E. Target Maximum Density: 1. The target value is established using the mixture maximum specific gravity (Gmm). For the first day of paving with a mix design the target maximum density will be the Gmm value 3 indicated on the mix design times 62.24 to get lb/ft. The target maximum density for all other days will be the running average of four Gmm tests at the end of the previous day times 3 62.24 for your new lb/ft. If four tests have not been completed the first day, the average of 3 . This process will continue until a running average of four is established. F. Use of Nuclear Gauges on Bituminous Pavement: 1. During testing, the gauge must be placed on a flat level surface on the material being tested. The longest dimension of the gauge must be parallel and perpendicular to the longitudinal edge of the pavement. 2. Conform to ASTM D2950 Standard Test Method for Density of Bituminous Concrete in Place by Nuclear Methods. Provide Engineer a copy of documented results from daily check at the end of each day. Perform nuclear gauge measurements using gamma radiation in the backscatter position. Each test shall be for a duration of 4 minutes of nuclear gauge count time. G. Contractor Quality Control Testing: 1. General: a. Paving lots will be established, tested, and evaluated separately for each paving layer and mix type. b. All test locations will be determined by the Engineer at random locations. The Engineer will provide test locations following compaction of the pavement. Two individual tests will be required at each test location. The second test shall be taken with the gauge rotated 90 degrees from the first test. The average of the two tests will be recorded and submitted to the Engineer at the end of each paving day. FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 9 c. If the Engineer requests, additional testing may be required at no additional cost to the owner. Additional test results may be incorporated into the calculations for average lot density. d. Density testing will be required at the discretion of the Engineer when the production of a specific mix type is between 0 to 300 tons. 2. Street Paving Density: a. Density tests will be performed on equal size lots based on the design street section. Each lot will consist of 5 test locations. 3. Irregular Paving Density: a. Density tests will be performed on lots of bituminous mixture placed consisting of a minimum of one density test performed per each occurrence of irregular pavement. Each lot will contain a maximum of 5 tests. H. Owner Verification: 1. General: a. One Verification test will be performed on each lot of bituminous mixture placed. b. The Verification test must be located at the same location as a QC test. I. Tolerance Comparison and Dispute Resolution: 1. Tolerance Comparison a. Compare Verification test with corresponding companion test taken at the same location. 3 If the QC and Verification tests differ by more than 1.5lb/ft Owner will check two additional locations within the same lot and compare the average of three Verification tests with the average of three corresponding QC tests. 3 If the difference in average is greater than 1lb/ft, the average of the Verification tests will be used for that lot, and the Contractor will pay the Owner $100 for each additional test completed. 3 If the difference in average is less than 1lb/ft, the Contractors QC results will be used and no further action will be required. 2. The testers may check gauges with the reference site monitoring (Reference Site Summary form) to determine if one of the gauges is out of tolerance. J. Contractor required documentation shall include completing the documents listed below and provided at the end of this technical specification section: 1. Nuclear Gauge Correlation 2. Reference Site Summary 3. Reference Site Daily Record Providing the completed documents above is considered incidental to the placement of the specified bituminous mix. 3.08 THICKNESS AND SURFACE SMOOTHNESS REQUIREMENTS A. Conform to MnDOT Section 2360.3.E, except as modified herein: 1. Pavement smoothness requirements of 2399 (Pavement Smoothness) will not apply to this Project. B. Structure Adjustment Conform to Section 33 05 17 for tolerances. FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 10 3.09 TEMPORARY BITUMINOUS WEDGE A. Where concrete curb and gutter is installed, construct a temporary bituminous wedge meeting the following requirements: 1. Construct with Non-Wearing Course SP 9.5. 2. 8 or 10 feet wide from front edge of concrete curb and gutter. 3. Thickness to be 1/4 inch over curb and taper to meet the non wear course base course mat elevation. 3.10 PATCH BITUMINOUS STREET, DRIVEWAY, OR TRAIL A. Perform patching at locations shown on the Drawings or as directed by Engineer. B. Remove existing bituminous per Section 02 41 13. C. Saw cut existing bituminous per Section 02 41 13. D. Excavate to the bottom of the aggregate base or aggregate backfill layer as shown on the Drawings and dispose of material per Section 31 23 00. E. Place aggregate backfill, as required, per Section 31 23 00. F. Place aggregate base per Section 32 11 23. G. Place bituminous pavement. END OF SECTION FLEXIBLE PAVING (MUNICIPAL PROJECTS) © 2021 City of Cottage Grove, Minnesota 32 12 01 - 11 This Page Left Blank Intentionally Nuclear Gauge Correlation (Instructions on back) ProjectContractorDate Project No.PlantVerification Company OwnerQC TesterVerification Tester Core Density Results Correlation Test #1 2 3 A. Weight in Air B. S.S.D Weight C. Weight in Water D. Volume (B-C) E. Core Density ((B/D)x62.24) Nuclear Density ReadingsGauge Serial No.Standard Count F. Density 1 G. Density 2 H. Ave. Nuclear R Density E N I. Individual W Correction Factor (E- O H),Show+/- Correction Factor to be applied to Nuclear Density Readings Nuclear Density ReadingsGauge Serial No.Standard Count F. Density1 G. Density2 H. Ave. Nuclear Density I. Individual Correction Factor (E- H),Show+/- Correction Factor to be applied to Nuclear Density Readings Nuclear Density ReadingsGauge Serial No.Standard Count F. Density1 G. Density2 H. Ave. Nuclear Density I. Individual Correction Factor (E- H),Show+/- R O T Correction Factor to be applied to Nuclear Density Readings C A R T Nuclear Density ReadingsGauge Serial No.Standard Count N O F. Density1 C G. Density2 H. Ave. Nuclear Density I. Individual Correction Factor (E- H),Show+/- Correction Factor to be applied to Nuclear Density Readings Nuclear Gauge Correlation Instructions: 1. Engineer to locate and identify a minimum of three correlation test locations. (Engineer) 2. Complete daily standard count prior to starting test. (Contractor, Owner) 3. For each gauge to be used on project (minimum of two QC and two Verification) perform two density tests at each correlation test location. Each test shall be for a duration of 4 minutes. The second test shall be taken with the gauge rotated 90 degrees from the first test. Record results in chart (F & G). (Contractor, Owner) 4. Calculate the Average Nuclear Density (H) for each test location. (Contractor, Owner) 5. Obtain a Correlation Core at each correlation test location. (Owner) 6. Determine the core bulk specific gravity for each Correlation Core per MnDOT Laboratory Test Method 1810 (A-E). (Owner) 7. Calculate the Individual Correction Factor (I) for each correlation test location. (Engineer) 8. Calculate the Correction Factor (Average of I for all locations) to be applied to each nuclear gauge. (Engineer) Sketch location of tests below Reference Site Summary (Instructions on back) ProjectContractorDate Project No.PlantVerification Company OwnerQC TesterVerification Tester Bulk Density Readings Gauge Serial No. QC/Verification Density 1A Density 1B Density 2A Density 2B Density 3A Density 3B Density 4A Density 4B Density 5A Density 5B Gauge Reference Value (Average) Daily Check Gauge Serial No.Gauge Serial No. Date Reference Site Summary Instructions Instructions: 1. Engineer to locate and identify a Reference Site. (Engineer) 2. Complete daily standard count prior to starting test. (Contractor, Owner) 3. For each gauge to be used on project (minimum of two QC and two Verification) perform five density tests at Reference Site. Each test shall be for a duration of 4 minutes and consist of two gauge readings. The second test shall be taken with the gauge rotated 90 degrees from the first test. (Contractor, Owner) 4. Calculate the average for each gauge to establish a reference value. Use the established reference value as a control to monitor the calibration of the gauge during the duration of the project. (Contractor, Owner) 5. A minimum of once per day, on every day of paving operations, perform one test at the Reference Site. Record test result on Reference Site Daily Check. (Contractor, Owner) 6. Compare daily test results for each gauge to the gauges Reference Value. If the daily result is within 1lb/cf of the Reference Value for that gauge proceed with project testing. If the daily result is not within 1lb/cf, investigate the cause of the difference. Conduct 5 additional tests at the reference site once the cause of deviation is corrected. Calculate and record the average of the 5 additional tests on the Daily Check Reference Record. If the average of five tests is within 1 lb/cf proceed with project testing. If the average of five tests is not within 1lb/cf remove the gauge from the project and use different gauge. (Contractor, Owner) Sketch location of tests below Daily Check Reference Record ProjectQC/V Company Project No.QC/ V Tester OwnerGauge Serial # Reference Site Value for Gauge No. Check 2 DateCheck 1Check 3Check 4Check 5Average This Page Left Blank Intentionally SECTION 32 13 14 CONCRETE WALKS, MEDIANS, AND DRIVEWAYS PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Cast-in-place concrete walkways, medians, driveways, and valley gutters. B. Related Sections: 1. Section 02 41 13 - Selective Site Demolition 2. Section 31 23 00 - Excavation and Fill. 3. Section 31 23 13 - Subgrade Preparation. 4. Section 32 11 23 - Aggregate Base Courses. 5. Section 32 16 13 - Concrete Curbs and Gutters. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. 6 Inch Concrete Sidewalk: Measurement shall be on the basis of in-place square yard: a. Payment of the Bid Item shall include the following: 1) Concrete materials. 2) Subgrade and base preparation. 3) Placement of materials. 4) Labor and equipment. 5) Finishing. 6) Curing and protection. 7) Backfilling. b. Excavation for concrete sidewalk shall be measured and compensated per Section 31 23 00. c. Aggregate base beneath concrete sidewalk shall be measured and compensated per Section 32 11 23. 2. Remove and Replace 6 Inch Concrete Sidewalk: This Bid Item shall be used for all concrete sidewalk removed and replaced on this Project without regard to thickness and is assumed to be all hand placed. Measurement shall be on the basis of in-place square yard of sidewalk removed and replaced: a. Payment of the Bid Item shall include the following: 1) Sawcutting at the removal limits. 2) Removal and disposal of existing concrete and excess aggregate materials per Section 02 41 13. 3) Excavation and subgrade preparation. 4) Aggregate base placement and preparation. 5) Concrete materials. 6) Placement of materials. 7) Labor and equipment. 8) Finishing. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 1 9) Curing and protection. 10) Backfilling. 3. 6 Inch Concrete Pedestrian Curb Ramp: Measurement shall be on the basis of square feet of ramp actually constructed: a. Measurement of ramp shall not include adjacent concrete curb and gutter, which shall be measured and compensated separately. b. Payment shall include the following: 1) Concrete materials, including material under truncated dome. 2) Subgrade and base preparation. 3) Placement of materials. 4) Labor and equipment. 5) Finishing. 6) Curing and protection. 7) Backfilling. c. Excavation for concrete pedestrian ramp shall be measured and compensated per Section 31 23 00. d. Aggregate base beneath concrete pedestrian ramp shall be measured and compensated per Section 32 11 23. 4. Remove and Replace 6 Inch Concrete Pedestrian Curb Ramp: a. Measurement of ramp shall be the final finished square feet of concrete placed. b. Measurement of ramp shall not include adjacent concrete curb and gutter, which shall be measured and compensated separately. c. Payment shall include the following: 1) Sawcutting at the removal limits. 2) Removal and disposal of existing concrete and excess aggregate materials per Section 02 41 13. 3) Excavation and subgrade preparation. 4) Aggregate base placement and preparation. 5) Concrete materials, including material under truncated dome. 6) Placement of materials. 7) Labor and equipment. 8) Finishing. 9) Curing and protection. 10) Backfilling. 5. Truncated Dome Panel, which is part of the concrete pedestrian curb ramp: Measurement shall be on the basis of square feet of Truncated Dome Panels actually constructed: a. Payment shall include the following: 1) Truncated panel materials. 2) Placement of truncated panels. 3) Joint sealing material. 4) Protection of truncated panels during construction. 6. 6 Inch Concrete Driveway (Residential) and 7 Inch Concrete Driveway (Commercial): Measurement shall be on the basis of in-place square yard: a. Payment of the Bid Item shall include the following: 1) Concrete materials. 2) Subgrade and base preparation. 3) Placement of materials. 4) Labor and equipment. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 2 5) Finishing. 6) Curing and protection. 7) Backfilling b. Excavation for concrete driveway shall be measured and compensated per Section 31 23 00. c. Aggregate base beneath concrete driveway shall be measured and compensated per Section 32 11 23. 7. Remove and Replace 6 Inch Concrete Driveway (Residential) and 7 Inch Concrete Driveway (Commercial): Measurement shall be on the basis of in-place square yard of Concrete Driveway Apron removed and replaced: a. Payment of the Bid Item shall include the following: 1) Sawcutting at the removal limits. 2) Removal and disposal of existing concrete pavement and excess aggregate materials per Section 02 41 13. 3) Excavation and subgrade preparation. 4) Aggregate base placement and preparation. 5) Concrete materials. 6) Placement of materials. 7) Labor and equipment. 8) Finishing. 9) Curing and protection. 10) Backfilling. 8. 4 Inch Concrete Median: Measurement shall be on the basis of in-place square yard: a. Payment of the Bid Item shall include the following: 1) Concrete materials. 2) Subgrade and base preparation. 3) Placement of materials. 4) Labor and equipment. 5) Finishing. 6) Curing and protection. 7) Backfilling. b. Excavation for concrete median shall be measured and compensated per Section 31 23 00. c. Aggregate base beneath concrete median shall be measured and compensated per Section 32 11 23. 9. Remove and Replace 4 Inch Concrete Median: Measurement shall be on the basis of in-place square yard of median removed and replaced: a. Payment of the Bid Item shall include the following: 1) Sawcutting at the removal limits. 2) Removal and disposal of existing concrete and excess aggregate materials per Section 02 41 13. 3) Excavation and subgrade preparation. 4) Aggregate base placement and preparation. 5) Concrete materials. 6) Placement of materials. 7) Labor and equipment. 8) Finishing. 9) Curing and protection. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 3 10) Backfilling. 10. Concrete Median Approach Nose: Measurement shall be on the basis of in-place square yard: a. Payment of the Bid Item shall include the following: 1) Concrete materials. 2) Subgrade and base preparation. 3) Placement of materials. 4) Labor and equipment. 5) Finishing. 6) Curing and protection. 7) Backfilling. b. Excavation for concrete median approach nose shall be measured and compensated per Section 31 23 00. c. Aggregate base beneath concrete median approach nose shall be measured and compensated per Section 32 11 23. 11. Remove and Replace Concrete Median Approach Nose: Measurement shall be on the basis of in-place square yard of median approach nose removed and replaced: a. Payment of the Bid Item shall include the following: 1) Sawcutting at the removal limits. 2) Removal and disposal of existing concrete and excess aggregate materials per Section 02 41 13. 3) Excavation and subgrade preparation. 4) Aggregate base placement and preparation. 5) Concrete materials. 6) Placement of materials. 7) Labor and equipment. 8) Finishing. 9) Curing and protection. 10) Backfilling. 11) Street Patch. 12. Concrete Valley Gutter: Measurement shall be on the basis of in-place square yard: a. Payment of the Bid Item shall include the following: 1) Concrete materials (high early). 2) Subgrade and base preparation. 3) Placement of materials. 4) Labor and equipment. 5) Reinforcement. 6) Finishing. 7) Curing and protection. b. Aggregate base beneath concrete valley gutter shall be measured and compensated per Section 32 11 23. 13. Remove and Replace Concrete Valley Gutter: Measurement shall be on the basis of in-place square yard: a. Payment of the Bid Item shall include the following: 1) Sawcutting of existing pavement. 2) Removal and disposal of existing concrete, bituminous, and excess aggregate materials per Section 02 41 13. 3) Excavation and subgrade preparation. 4) Aggregate base placement and preparation. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 4 5) Concrete materials (high early). 6) Placement of materials. 7) Labor and equipment. 8) Reinforcement. 9) Finishing. 10) Curing and protection. 11) Patch adjacent bituminous street 14. High Capacity Concrete Apron: Measurement shall be on the basis of each: a. Payment of the Bid Item shall include the following: 1) Excavation and subgrade preparation. 2) Removal and disposal of all excess materials per Section 02 41 13. 3) Aggregate base placement and preparation. 4) Concrete materials. (6 Inch thick) 5) Placement of materials. 6) Labor and equipment. 7) Reinforcement. 8) Finishing. 9) Curing and protection. 10) Backfilling. 15. Concrete Spillway: Measurement will be by the square feet of spillway constructed. a. Payment of the Bid Item shall include the following: 1) Excavation and subgrade preparation. 2) Removal and disposal of all excess materials per Section 02 41 13. 3) Aggregate base placement and preparation. 4) Concrete materials. 5) Placement of materials. 6) Labor and equipment. 7) Finishing. 8) Curing and protection. 9) Backfilling. 16. 6 Inch Concrete Hydrant Access Pad or Mailbox Pad: Measurement shall be on the basis of square feet of Concrete Pad actually constructed: a. Payment of the Bid Item shall include the following: 1) Excavation and subgrade preparation. 2) Removal and disposal of all excess materials per Section 02 41 13. 3) Aggregate base placement and preparation. 4) Concrete materials. 5) Placement of materials. 6) Labor and equipment. 7) Finishing. 8) Curing and protection. 9) Backfilling. 17. Maturity Testing for Compressive Strength: Measurement shall be Lump Sum for testing all concrete curb, driveways, and valley gutters. Payment shall include, but is not limited to, maturity curve establishment and all testing and necessary equipment to complete the maturity determination for each type of concrete mix used for curbs and driveways on the project. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 5 18. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. American Society of Testing Materials (ASTM): C260 - Air-Entraining Admixtures for Concrete. B. Minnesota Department of Transportation 2018 Edition (MnDOT Spec.): 1. 2211 - Aggregate Base. 2. 2461 - Structural Concrete. 3. 2521 - Walks. 4. 2531 - Concrete Curbing. 5. 3702 - Preformed Joint Fillers. 6. 3754 - Poly-Alpha Methylsythrene (AMS) Membrane Curing Compound. 1.04 SUBMITTALS A. Submit MnDOT approved design mix for each concrete mix designation used. B. The Contractor is responsible for developing the maturity curve for each specified mix and delivering a copy of the results to Engineer no later than two weeks prior to placement. C. The Contractor is responsible for taking maturity readings, and delivering a copy of the results to the Engineer by the end of the work day. The Contractor will provide any equipment necessary to monitor the maturity in the field. 1.05 SEQUENCING AND SCHEDULING A. Complete construction of concrete pedestrian ramps prior to the paving of bituminous path and construction of the concrete sidewalk. B. Complete construction of concrete sidewalks following the paving of the bituminous initial lift wearing course and following the installation of Private Utilities. C. Begin construction of the concrete driveway aprons, concrete hydrant access pads, mailbox pads, and concrete medians no sooner than 24 hours after placement of the adjacent concrete curb and gutter. D. Construct concrete valley gutter prior to the paving of bituminous initial lift. 1. Concrete valley gutters must be protected during the paving of bituminous street. Method of protection must be approved by the engineer. 2. On street rehabilitation projects, valley gutters shall be constructed in halves to provide access for residents. E. Provide notice by 2:00 P.M. of the day prior to any concrete curb and gutter placement, to allow time for scheduling of the following activities. Notice must include mix designation, start time of placement, plant producing concrete, and Foreman onsite during placement: CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 6 1. Aggregate base DCP tests (per Section 32 11 23) prior to any concrete curb being placed. 2. Inspection of curbing operations by a City representative. No curbing will be allowed or accepted without inspection. 3. Concrete field and plant testing if required. F. All concrete placed between October 1 and October 15 must be high early strength concrete. G. Under no circumstances will concrete be allowed to be placed after October 15, without prior approval from the Engineer. PART 2 PRODUCTS 2.01 MATERIALS A. Concrete to conform to MnDOT Spec. 2461, except as modified herein: 1. Portland Cement: Conform to MnDOT Spec. 3101: a. Type 3 air-entraining concrete produced by using Type I Portland Cement. 2. Air-Entraining Admixtures: conform to MnDOT Spec. 3113: a. Conforming to ASTM C260. b. Not to be added to the concrete mixtures in the field without approval from Engineer. 3. Mix Designation and Classification: a. Sidewalk, Pedestrian Ramps, and Medians: Mix No. 3F52A. b. Valley gutters: Mix No. 3HE52A. c. Residential and Commercial Driveways: Mix No. 3HE52A. B. Truncated Dome Panels: Approved products: 1. East Jordan Iron Works Cast Iron Uncoated. 2. Neenah Foundry Company Cast Iron Uncoated. 3. Natural color - unpainted. C. Preformed Joint Filler: Conform to MnDOT Spec. 3702. D. Curing Compound: Conform to MnDOT Spec. 3754: 1. Curing compound shall contain a fugitive dye. 2. Spot Removal and replacement projects: Curing compound shall conform to ASTM C309, Type 1-D, clear with fugitive dye, Class B applied at a rate of 200 square feet per gallon. E. Sub-Grade Base Material: 1. Aggregate Backfill: Conform to Section 31 23 00. 2. Aggregate Base: Conforming to Section 32 11 23. PART 3 EXECUTION 3.01 GENERAL A. Concrete contractor shall have at least two people with a current ACI concrete flatwork technician or flatwork finisher certification, and at least one of them must be onsite for all concrete pours. B. Provide copies of batch tickets for concrete mix at the time of material delivery to Site. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 7 C. Construct concrete sidewalk, pedestrian ramps, driveways, medians, median approach noses, and valley gutters at the locations and elevations indicated on the Drawings. D. Construct sidewalks and medians to conform to the typical section shown on the Drawings. E. Construct concrete driveway aprons to conform to Standard Detail Plates STR-17 and STR-18. F. Construct concrete median approach nose per Standard Detail Plate STR-38. G. Construct concrete valley gutters to conform to Standard Detail Plate STR-16 and prior to the paving of bituminous street. H. Construct High Capacity Concrete Apron to conform to Standard Detail Plate STR-15. I. Construct concrete hydrant pads to conform to Standard Detail Plate STR-37. J. Construct concrete curb ramp to conform to MnDOT Standard Details, current version, and prior to the paving of bituminous trail. K. Verify locations with Engineer in the field prior to construction. L. The completed concrete work shall give the appearance of uniformity in surface contour and texture, and shall be accurately constructed to line and grade. The required joints, edges, and flow lines shall show neat workmanship. The concrete work shall be in full accordance with the Standard Detail Drawings. Any deviations from the Standard Detail Plates may be cause for means to correct deviations. M. Re-tempering of concrete which has partially hardened with or without additional materials or water is prohibited. N. Remove and Replace Concrete Sidewalks, Concrete Pedestrian Ramps, Concrete Driveways, Concrete Medians, Concrete Median Approach Noses: 1. Perform patching at locations shown on the Drawings or as directed by the Engineer per Standard Detail Plate STR-28. 2. Remove existing concrete per Section 02 41 13. 3. Saw cut existing concrete per Section 02 41 13. 4. Excavate to the bottom of the aggregate base layer and dispose of the material per Section 31 23 00. 5. Place aggregate base per Section 32 11 23. 6. Place concrete pavement. O. Construct Concrete Spillway: 1. Construct a concrete spillway at locations shown on the Drawings or as directed by the Engineer. 2. 6 inches thick (minimum). 3. 5 feet wide (minimum). 4. Construct spillway such that the storm water is conveyed directly to the bottom of the drainage way, thereby minimizing erosion in the general area. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 8 P. Concrete washout locations shall conform to the requirements of the NPDES Permit. 3.02 FOUNDATION PREPARATIONS A. Placement of the aggregate base or granular material to support the concrete work shall conform to Section 32 11 23 or Section 31 23 13. Compaction of subgrade base shall conform to MnDOT Spec. 2211.3.D.2.c. B. The foundation shall be approved by the Engineer prior to placement of concrete material. 3.03 FORMS A. Conform to MnDOT Spec. 2521.3.C. 3.04 JOINT CONSTRUCTION A. Conform to MnDOT Spec. 2521.3.D.2, except as modified herein: 1. Match joints of adjacent concrete work. 2. Transverse expansion joints for sidewalk: a. 200 foot intervals. b. Concrete areas that are poured separately. 3. Contraction joints shall be formed. Sawed joints not allowed. 3.05 METAL REINFORCEMENT A. Conform to MnDOT Spec. 2472, except as modified herein: 1. Install 3 No. 4 steel reinforcing rods in lower portion of the valley gutter section with minimum 2 inch coverage on all sides. 3.06 PLACING AND FINISHING A. Conform to MnDOT Spec. 2521.3.D and 2531.3.C for manual placement or 2531.3.D for slip form, except as modified herein: 1. Any deviation in the design curvature of concrete edges in excess of 3/8 of an inch, measured with a 10 foot straight edge, will be considered unacceptable. 2. Any surface area allowing the entrapment of water at a depth 1/8 inch or greater will be considered unacceptable. 3. Unacceptable work shall be removed and replaced with acceptable Work as directed by the Engineer. Acceptance of Work by price reduction will not be allowed. B. Pedestrian Curb Ramp - Truncated Dome: 1. Truncated Dome Panels - 2. Truncated dome panels shall be placed (wet set) on a minimum of 6 inches concrete and prior to finishing the adjacent concrete surface of the pedestrian ramp. The joint between the panel and concrete shall be finished with 1/2 inch radius edging tool. 3. Conform to MnDOT Standard Detail Plate No. 7038A for specified truncated dome surface pattern dimensions. Refer to the Drawings for actual ramp size, shape, and slopes. 4. Multiple Truncated Dome panels shall be rectangular or radial plates of equal size and shall be joined together per the manufacturer's recommendation. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 9 5. Joint space between truncated dome panels shall be no greater than 1/4 inch in width. 6. Radius style Truncated Dome Panels required when exceeding 5 foot dimension from back of curb. 3.07 CONCRETE CURING AND PROTECTION A. Conform to MnDOT Spec. 2521.3.E and 2521.3.E.1.a, except as modified herein: 1. Coat all surfaces with membrane curing compound within 30 minutes after finishing at the specified rate. 2. The membrane-curing compound must contain a fugitive dye and be applied at 2 different directions perpendicular to each other to provide a uniform solid white opaque coverage (equal to a white sheet of typing paper) on all exposed concrete surfaces. 3. A second application of membrane curing compound shall be applied 4 to 8 hours after the first application at the specified rate. 4. Protect concrete against hot weather conditions as defined in the PCA Design and Control of Concrete Mixtures as when the rate of evaporation of bleed water per hour exceeds 0.2 lb. of water per square foot per hour. A chart published by the ACI and PCA can be used to predict the bleed water rate. 5. Cold weather curing, when temperatures fall below 40 degrees F during placement or within the following 24 hours, shall conform to MnDOT Spec. 2521.3.E.3.a and 2521.3.E.1.b blanket curing method, except as modified below: a. If temperatures are projected to fall below 32 degrees within 24 hours of concrete placement, insulated blankets shall be using for curing. b. All costs associated with blanket curing shall be incurred by the Contractor. 6. Failure to comply with these provisions will result in a price reduction for the concrete Bid Item involved in accordance with MnDOT Spec. 1503. 7. The freshly finished surface shall be protected, surfaces pitted by rain will be considered unacceptable. 8. Removal and replacement of any concrete section damaged by traffic, rain, cold weather, or other causes occurring prior to final acceptance shall be the responsibility of the Contractor. 3.08 HIGH EARLY CONCRETE A. Conform to MnDOT Spec. 2461.2.F.2.b(2), except as modified herein: 1. High early concrete shall be designed to provide a maximum water/cementitous ratio of 0.42. 2. High early concrete shall be designed to provide a minimum flexural strength of 500 psi and a minimum compressive strength of 3,000 psi in 48 hours. 3.09 CONCRETE STRENGTH BY MATURITY TESTING A. When utilized on a project, the intent of the maturity testing is so the Contractor can proceed with work once concrete has achieved maturity. B. Determining concrete maturity (time temperature factor, TTF) and estimating in-place concrete strength is a two-step procedure as follows: 1. Maturity curve: No later than 2 weeks prior to construction, establish a relationship between the maturity (TTF) and the concrete strength as measured by destructive methods (that is, through testing of concrete cylinders or beams). Develop the maturity-strength curve at the CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 10 plant site at the beginning of construction using project materials and the project proportioning and mixing equipment. 2. Field maturity: The second step is the temperature monitoring of the placed concrete. Install temperature probes in the concrete and measure the temperature. From those measurements, along with the age at which the measurements were taken, calculate the maturity (TTF) and use it to estimate the concrete strength. You may also use a maturity meter to determine the maturity value (TTF). Many products are available in the marketplace with embedded probes that transfer data either through a wire connection or wireless. This data is a complete record of the temperature and humidity or the concrete since it was embedded. Som C. Maturity can be used for any concrete mix on a project, but might be most helpful for early- strength concrete mixes. These mixes are used to open sections of pavement to traffic as soon as possible using maturity as a non-destructive testing method of estimating the concrete strength at any time. D. Early-strength concrete shall achieve sufficient strength to be opened to traffic within three days of placement, or earlier if the compressive strength of 3000 psi is achieved. Because of the accelerated rate of hardening of early-strength concrete, the Contractor shall take such extra precautions as necessary to ensure satisfactory finishing of early strength concrete. E. The Contractor shall place the maturity-measuring device in the final 15 feet of concrete placed, which will control the opening time for all the concrete placed that day. For concrete pavement, the maturity device shall be located on the outside edge of the slab, at least 1 foot and not more than 2 feet from the edge. F. The Contractor shall develop maturity relationships for each mix design in accordance with ASTM C 1074 with the following additions or modifications: 1. The cylinders used to establish the strength vs. maturity relationship shall be cast and cured in the field in conditions similar to the project. 2. These specimens shall be tested at 1, 2, 3, 5 and 7 days. a. High-Early Concrete shall be tested at 1, 2, and 3 days. 3. Testing to determine datum temperature will not be required. G. The Contractor shall provide the maturity-measuring devices, probes, meters, and all necessary wires and connectors. The Contractor shall be responsible for the placement, protection, and maintenance of the maturity devices, wires, and meters. The equipment will be the property of H. The contractor shall provide the Engineer or Resident Project Representative with the testing data from the in-place maturity-measuring devices, though a cell phone App or electronically. The information shall be provided on a daily basis, until the concrete meets the specified strength. 3.10 BACKFILLING A. Conform to MnDOT Spec.2521.3.G, except as modified herein: 1. Backfill to protect the concrete no sooner than 72 hours after placement of the concrete. CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 11 3.11 FIELD QUALITY CONTROL A. Any sidewalk, driveway, pedestrian ramp, etc. damaged by the Contractor shall be removed and replaced by the Contractor, and will be incidental to the Project. B. The Owner shall have an independent testing laboratory perform the following tests as a minimum. The test locations will be determined by the Engineer: 1. 1 air entrainment test per day, per Project (per concrete mix). 2. 1 slump test per day, per Project (per concrete mix). 3. 1 set of cylinders for compression test per day, per Project (per concrete mix). a. An additional cylinder will be cast to be tested when concrete has reached maturity. C. The Contractor will be responsible for maturity testing per day that concrete is being poured on the Project (per concrete mix). Refer to Section 32 16 13, Paragraph 3.10. END OF SECTION CONCRETE WALKS, MEDIANS, AND DRIVEWAYS © 2021 City of Cottage Grove, Minnesota 32 13 14 - 12 SECTION 32 16 13 CONCRETE CURBS AND GUTTERS PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Cast-in-place concrete curb and gutter. B. Related Sections: 1. Section 02 41 13 Selective Site Demolition. 2. Section 32 11 23 - Aggregate Base Courses. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Concrete Curb and Gutter: Measurement shall be by the linear foot measured along the face of the curb at the gutter line for each type. Payment shall include materials, preparation, placement, finishing, curing, protection, and backfilling. Measurement shall not include frames/castings that are located along the face of curb. 2. Remove and Replace Concrete Curb and Gutter: This Bid Item shall be used for all concrete curb and gutter removed and replaced on this Project without regard to type or size and is assumed to be all hand placed. Measurement will be per linear foot along the face of curb. Payment will include all costs, including labor, materials, and equipment necessary to complete the work, including sawcutting at the removal limits and disposal of the material per Section 02 41 13, stripping and offsite disposal of soil per Section 31 00 00, construction of new curb and gutter, and patching of adjacent street. 3. Maturity Testing for Compressive Strength: Per Section 32 13 14. 4. No separate measurement or payment for modifications at driveways, pedestrian ramps, transition sections, or B618 curb installed at catch basins and radii. 5. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. American Society of Testing Materials (ASTM): 1. C260 - Air-Entraining Admixtures for Concrete. B. Minnesota Department of Transportation , 2018 Edition (MnDOT Spec.): 1. 1503 - Conformity with Contract Documents. 2. 2461 - Structural Concrete. 3. 2531 - Concrete Curbing. 4. 3101 - Portland Cement. 5. 3113 - Admixtures for Concrete. 6. 3702 - Preformed Joint Fillers. CONCRETE CURBS AND GUTTERS © 2021 City of Cottage Grove, Minnesota 32 16 13 - 1 7. 3754 Poly-Alpha Methylsythrene (AMS) Membrane Curing Compound. 1.04 SUBMITTALS A. Submit MnDOT approved design mix for each concrete mix designation used. B. If utilized on a project, the Contractor is responsible for developing the maturity curve for each specified mix and taking maturity readings. See Section 32 13 14. 1.05 SEQUENCING AND SCHEDULING A. Concrete curb and gutter construction precedes installation of pavement. B. gutter placement shall be approved by the Engineer prior to concrete placement. Notify the Engineer a minimum of 4 hours (one half day) prior to placement of concrete to allow for review and approval. C. Provide notice by 2:00 P.M. of the day prior to any concrete curb and gutter placement, to allow time for scheduling of the following activities. Notice must include mix designation, start time of placement, plant producing concrete, and Foreman onsite during placement: 1. Aggregate base DCP tests (per Section 32 11 23) prior to any concrete curb being placed. 2. Inspection of curbing operations by a City representative. No curbing will be allowed or accepted without inspection. 3. Concrete field and plant testing if required. D. All concrete placed between October 1 and October 15 must be high early strength concrete. E. Under no circumstances will concrete be allowed to be placed after October 15, without prior approval from the Engineer. PART 2 PRODUCTS 2.01 MATERIALS A. Concrete to Conform to MnDOT Spec. 2461, except as modified herein: 1. Portland Cement: Conform to MnDOT Spec. 3101: a. Type 3 air-entraining concrete produced by using Type I Portland Cement. 2. Air-Entraining Admixtures: Conform to MnDOT Spec. 3113: a. Conforming to ASTM C260. b. Not to be added to the concrete mixtures in the field without approval from Engineer. 3. Mix Designation and Classification for Concrete Curb and Gutter: a. Manual Placement Mix No. 3F52. b. Slip Form Placement Mix No. 3F32. B. Pre-Formed Joint Filler: Conform to MnDOT Spec. 3702. C. Curing Compound: Conform to MnDOT Spec. 3754, except as modified below: 1. Curing compound shall contain a fugitive dye. CONCRETE CURBS AND GUTTERS © 2021 City of Cottage Grove, Minnesota 32 16 13 - 2 2. Remove and Replace Concrete Curb and Gutter (spot repairs): Curing compound shall conform to ASTM C309, Type 1-D, clear with fugitive dye, Class B applied at a rate of 200 square feet per gallon. PART 3 EXECUTION 3.01 GENERAL A. Concrete contractor shall have at least two people with a current ACI concrete flatwork technician or flatwork finisher certification, and at least one of them must be onsite for all concrete pours. B. Provide copies of batch tickets for concrete mix at the time of material delivery to the Site. C. Construct concrete curb and gutter at the locations and elevations indicated on the Drawings. Any concrete curb and gutter that is longer than 200 linear feet continuously, shall be placed using slip form placement. D. Construct the style or type of curb and gutter as shown on the Drawings. E. Construct intersection curb radii and transitions sections to conform to the detail on the Drawings. F. Construct transition sections at inlet structures to conform to the detail on the Drawings. G. Construct concrete curb ramp depressions to conform to the detail on the Drawings. H. Construct curb transitions for driveways to conform to the detail on the Drawings. Locations to be verified by Engineer at the time of construction. I. Stamp the concrete curb and gutter for sewer and water service locations conforming to Standard Detail Plate STR-11. 1. Stamping must conform to the dimensions indicated on the detail plate. 2. 3. The loc 4. Stamping of the service locations shall be considered incidental to the placement of the concrete curb. 5. al and replacement. J. The completed concrete work shall give the appearance of uniformity in surface contour and texture, and shall be accurately constructed to line and grade. The required joints, edges, and flow lines shall show neat workmanship. The concrete curb shall be in full accordance with the Standard Detail Drawings. Any deviations from the Standard Detailed Plates may be cause for means to correct the deviations. K. Re-tempering of the concrete which has partially hardened with or without additional materials or water is prohibited. CONCRETE CURBS AND GUTTERS © 2021 City of Cottage Grove, Minnesota 32 16 13 - 3 L. Concrete washout locations shall conform to the requirements of the NPDES. 3.02 FOUNDATION PREPARATIONS A. Support on a compacted aggregate base extending 1 foot behind the back of curb: 1. Conform to typical sections as shown on the Drawings. 2. Conform to Section 32 11 23 and MnDOT Spec. 2211.3.D.2.c. 3.03 FORMS A. Conform to MnDOT Spec. 2531.3.B. 3.04 JOINT CONSTRUCTION A. Conform to MnDOT Spec. 2531.3.E, except as modified herein: 1. Contraction joints: 10 foot intervals. 2. Transverse expansion joints: a. 400 foot intervals b. Adjacent to hand placed curb 3. Contraction joints shall be formed. Sawed joints not allowed. 3.05 PLACING AND FINISHING A. Conform to MnDOT Spec. 2531.3.C, except as modified herein: 1. The top surface of the curb and gutter shall have a brush finish at right angles to the curb line. 3.06 CONCRETE CURING AND PROTECTION A. Conform to MnDOT Spec. 2531.G and 2531.3.G.1.a, except as modified herein: 1. Coat all surfaces with membrane curing compound within 30 minutes of concrete placement unless otherwise directed by Engineer. 2. The membrane-curing compound must be applied in 2 different directions perpendicular to each other to provide a uniform solid white opaque coverage (equal to a white sheet of typing paper) on all exposed concrete surfaces. 3. A second application of membrane curing compound shall be applied 4 to 8 hours after the first application at the specified rate. 4. Protect concrete against hot weather conditions as defined in the PCA Design and Control of Concrete Mixtures as when the rate of evaporation of bleed water per hour exceeds 0.2 lb. of water per square foot per hour. A chart published by the ACI and PCA can be used to predict the bleed water rate. 5. Cold weather curing, when temperatures fall below 40 degrees during placement or within the following 24 hours, shall conform to MnDOT Spec. 2531.3.G.3.a and 2531.3.G.1.b blanket curing method or method approved by the Engineer, except as modified below: a. If temperatures are projected to fall below 32 degrees within 24 hours of concrete placement, insulated blankets shall be using for curing. b. All costs associated with blanket curing shall be incurred by the Contractor. 6. Failure to comply with these provisions will result in a price reduction for the concrete curb and gutter Bid Item involved in accordance with MnDOT Spec. 1503. CONCRETE CURBS AND GUTTERS © 2021 City of Cottage Grove, Minnesota 32 16 13 - 4 7. The freshly finished surface shall be protected. Surfaces pitted by rain will be considered unacceptable. 8. Removal and replacement of any curb section damaged by traffic, rain, cold weather, or other causes occurring prior to final acceptance shall be the responsibility of the Contractor. 3.07 BACKFILLING A. Conform to MnDOT Spec. 2531.3.H, except as modified herein: 1. Initial Backfilling: a. Follow the 72 hours curing period with completion within 6 days of original placement, or per applicable in Milestones per Section 00 52 10, Paragraph 4.02.A.1. b. Tolerance within 0.3 feet to the top of curb elevation. 2. Final Grading: a. Following completion of private utility work by others. 3. Curb damaged during backfilling is the responsibility of the Contractor. 3.08 HIGH EARLY CONCRETE A. Conform to MnDOT Spec. 2461.2.F.2.b(2), except as modified herein: 1. High early concrete shall be designed to provide a maximum water/cementitous ratio of 0.42. 2. High early concrete shall be designed to provide a minimum flexural strength of 500 psi and a minimum compressive strength of 3,000 psi in 48 hours. 3. High early concrete may be included as a separate Bid Item. 3.09 REMOVE AND REPLACE CONCRETE CURB AND GUTTER (HIGH EARLY) A. It is anticipated that sections of curb and gutter or sidewalk may be cracked, broken or have settled over time. Removal and replacement will be identified by the Engineer as part of a street rehabilitation type project. B. Sawcut at removal limits per Section 02 41 13. C. Do not disturb any material beyond the limits required to form for new construction (assumed 12 inches maximum from the back and 6 inches beyond the edge of new work). D. Complete stripping and offsite disposal of soil per Section 31 00 00. E. Install new curb and gutter as described previously in this Section (high early concrete). 3.10 CONCRETE STRENGTH BY MATURITY TESTING A. Refer to Section 32 13 14, Paragraph 3.09. 3.11 WORKMANSHIP AND FINISH A. Conform to MnDOT Spec. 2531.3.I, except as modified herein: 1. Any deviation in the design curvature of concrete edges in excess of 3/8 of an inch, measured with a 10 foot straight edge, will be considered unacceptable. 2. Acceptance of Work by price reduction will not be allowed. CONCRETE CURBS AND GUTTERS © 2021 City of Cottage Grove, Minnesota 32 16 13 - 5 3.12 FIELD QUALITY CONTROL A. Any curb damaged by the Contractor shall be removed and replaced by the Contractor, and will be incidental to the Project. B. The Owner shall have an independent testing laboratory perform the following minimum tests. The test locations shall be determined by the Engineer: 1. 1 air entrainment test per day, per Project (per concrete mix). 2. 1 slump test per day, per Project (per concrete mix). 3. 1 set of cylinders for compression tests per day, per Project (per concrete mix). a. An additional cylinder will be cast to be tested when concrete has reached maturity. C. The Contractor will be responsible for maturity testing per day that concrete is being poured on the Project (per concrete mix). END OF SECTION CONCRETE CURBS AND GUTTERS © 2021 City of Cottage Grove, Minnesota 32 16 13 - 6 SECTION 32 17 23 PAVEMENT MARKINGS PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Pavement markings for control and guidance of traffic. B.Related Sections: 1. Section 01 33 00 - Submittal Procedures. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Lines: a. Lines shall be measured by the linear foot on the basis of length actually applied, regardless of color: 1) Separate measurement will be made on the basis of type and nominal width. 2) Double yellow lines shall be measured to include both lines per linear feet of quantity because they are applied simultaneously. b. For the paint pavement markings, the second application shall be measured the same as the first application; for example: 1,000 LF of application painted twice would be paid as 2,000 LF. c. All permanent lines and messages shall be Ground In (GR IN) to pavement surface. 2. Messages: a. Messages shall be measured on the basis of each applied: 1) Separate measurement will be made for each type of message. 2) Separate measurement will be made for paint messages and thermoplastic messages. 3.Payment of each Bid Item shall be compensation in full for all costs incidental thereto, including but not limited to surface preparation, traffic control measures, maintaining the Work, removal of temporary pavement markers, together with any other expenses incurred in completing the Work that are not specifically included for payment under the Contract Bid Items. 4. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation 2018 Edition (MnDOT Spec.): 1. 3592 - Drop-On Glass Beads. 2. The Application Specification for Conventional Pavement Marking Materials. 3. 3-Minute Dry Alkyd and High Solids Latex. PAVEMENT MARKINGS © 2020 City of Cottage Grove, Minnesota 32 17 23 - 1 1.04 SUBMITTALS A. Submit the following consistent with Section 01 33 00: 1. 1 copy of the chosen multi-component lot or batch formulation. 2. Pavement Marking Contractor Qualifications/Certifications. 3. MnDOT Certification approvals. 1.05 SEQUENCING AND SCHEDULING A. Prime Contractor is responsible for scheduling an onsite pre-signing meeting with the Owner, Engineer, and Signing Subcontractor (if appropriate) a minimum of 24 hours prior to the installation of any signing. B. Conform to the requirements of MnDOT Specifications except as modified herein: 1. Multi-Component Liquid Pavement Markings: a. Place after completion of the wear course bituminous paving, immediately following the grinding operations, or per manufacturer recommendations on products list. b. Place all markings indicated as Multi-Component striping on Drawings. 2. Temporary Paint Pavement Markings: a. Place following completion of the final bituminous wearing course or interim bituminous course. b. Place immediately after paving and allowing pavement surface to cool 3. Pavement Markings Thermoplastic: a. Place following bituminous wearing course placement. b. Place all markings indicated as pavement marking thermoplastic on Drawings. C. Complete application of pavement markings concurrently with paving done under traffic. PART 2 PRODUCTS 2.01 MATERIALS A. Paint: 1. High Solids Water Based: a. Free of toxic heavy metals, including lead, mercury, and cadmium. b. Track Free Time - 3 minutes or less. c. Yellow Prime Pigment - Color Index Pigment Yellow No. 65 or No. 75. d. White Color - Flat white. e. Yellow Color - Color No. 33538 of Federal Standard 595. 2. 3-Minute Dry Alkyd: a. Free of toxic heavy metals, including lead, mercury, and cadmium. b. Track Free Time - 3 minutes or less. c. Yellow Prime Pigment - Color Index Pigment Yellow No. 65 or No. 75. d. White Color - Flat white. e. Yellow Color - Color No. 33538 of Federal Standard 595. B. Thermoplastic Premark Pavement Marking: 1. As manufactured by Ennis-Flint or approved equal. PAVEMENT MARKINGS © 2020 City of Cottage Grove, Minnesota 32 17 23 - 2 a. White Lines: 125mil Premark Preformed Thermoplastic. b. Arrows: Premark Preformed Thermoplastic 8330241L (Left Turn), 8330241R (Right Turn), 8330240 (Straight), 8330142L (Combination Left-Straight), 8330142R (Combination Right-Straight). c. Sealer: 600/300 two part sealer tube, #7 102EF. 2. http://www.ennisflintamericas.com. C. Glass Beads: 1. - D. Multi-Component Liquid Pavement Markings (Multi Comp): 1. Conform to MnDOT Spec. 3590. 2.02 EQUIPMENT A.General: 1. Vehicles used shall be deployed and equipped with traffic control devices set forth in the 2. Shadow vehicle with truck-mounted attenuator shall be used on streets with posted speed equal to or greater than 40 M.P.H. or ADT greater than 1,500 vehicles per day. 3. Equipment used for spray applications shall be capable of applying glass beads by a pressurized system at a rate of at least 25 lbs/gal. 4. Capable of accumulating footage applied per gun. 5. Stainless steel components in the delivery system required for water-based materials. 6. The only acceptable equipment for installation of Premark Thermoplastic is an infrared heater (Street Heat SR-20 or SR-28 as manufactured by Ennis-Flint). PART 3 EXECUTION 3.01 GENERAL A. The pavement marking crew shall include at least 1 technical expert knowledgeable in each of the following areas: 1.Equipment operation. 2. Application techniques. 3. Traffic control. 4. Safety regulations. B. All pavement markings shall be ground in (GR IN) or recessed. Conform to MnDOT Spec. 2582.3.B.7 Recessing. C. The filling of tanks, pouring of materials, or cleaning of equipment shall not be performed on unprotected pavement surfaces, unless adequate provisions are made to prevent spillage of material. D. Thermoplastic pavement markings installers must show proof of certification for Premark Thermoplastic installation. PAVEMENT MARKINGS © 2020 City of Cottage Grove, Minnesota 32 17 23 - 3 3.02 PREPARATION A. Locations: 1. In general accordance with the Drawings: a. Location of marking designating no passing zones to be coordinated with corresponding traffic signs. 2. The Engineer will place necessary "Spotting" at appropriate points: a. Horizontal control. b. Starting and stopping points. c. Broken line intervals will not be marked. d. Longitudinal joints, pavement edges, and existing markings shall serve as horizontal control when so directed. e.Notify Engineer at least 48hours in advance when requesting spotting locations. 3. Edge lines and lane lines are to be broken only at intersections with public roads and at private entrances if they are controlled by a yield sign, stop sign, or traffic signal. 4. The break point is to be at the start of the radius for the intersection or at marked stop lines or crosswalks. B. Street Surface: 1. Engineer may direct cleaning of surface as necessary immediately prior to marking application: a. Brushing with non-metallic rotary broom. b. Other cleaning method approved by Engineer. c. Air blast following cleaning. 2. Surface must be dry. 3. Minimum surface temperature is 50 degrees F. C. Traffic Control: 1. Field Edition." 2. Shadow vehicle with truck-mounted attenuator shall be used on streets with posted speed equal to or greater than 40 M.P.H. or ADT greater than 1,500 vehicles per day. 3.03 APPLICATION A. General: 1. Tolerance: a. Width:A tolerance of 1/4 inch under or 1/4 inch over the specified width will be allowed for striping provided the variation is gradual and does not detract from the general appearance. b. Length: Broken line segments may vary up to 2-3/4 inches from the specified lengths provided the over and under variations are reasonably compensatory. c. Alignment:Deviations from the control guide shall not exceed 2 inches. d. Establishment of application tolerances shall not relieve the Contractor of his responsibility to comply as closely as practicable with the planned dimensions. 2. Material shall not be applied over longitudinal joints. 3. 4 inch broken line consists of 10 feet of paint and 40 feet space (1 cycle). PAVEMENT MARKINGS © 2020 City of Cottage Grove, Minnesota 32 17 23 - 4 4. If same equipment used for different color material with change in color, an amount of material equal to fifteen 10 foot long stripes shall be wasted prior to beginning application with the new color. 5. Conditions: a. Markings shall not be applied when wind or other conditions cause a film of dust to be deposited on the pavement surface after cleaning and before the marking material can be applied. b. Except when used as a temporary marking, pavement markings shall only be applied in seasonable weather when air temperature is 50 degrees F or higher. B. Glass Beads: 1. Shall be applied immediately after application of paint or multi-component markings. 2.Rate of application shall be 8 lbs. per gallon. C. Pavement Marking Thermoplastic: 1. Grind pavement surface prior to application. 2. Apply -part sealer. 3. Width of thermoplastic must match design pavement marking width. For example, 12-inch wide thermoplastic must be used for 12-inch stop bar. Two 6-inch wide strips of thermoplastic will not be allowed to be used to create a 12inch stop bar. E. Multi-Component Liquid Pavement Markings: 1. Conform to MnDOT Spec. 2582. 3.04 CORRECTION OF DEFECTS A. All pavement markings not conforming to the requirements of the Specifications shall be removed and replaced, or otherwise repaired to the satisfaction of the Engineer. B. Where yield computations show a deficiency in material usage of not more than 20-percent, Owner may require satisfactory repair or may accept the Work at a reduced Bid Unit Price that is in direct proportion to the percent of the deficiency. C.Where yield computations show a deficiency in material usage in excess of 20-percent, Owner will require removal and replacement to the satisfaction of the Engineer, unless other means are approved by the Engineer. D. If removal and replacement is required, at least 90-percent of the deficient line shall be removed. E. Width of removal shall be 1 inch wider on all sides than the nominal width of the marking to be removed. F. Removal of unacceptable Work shall be accomplished with sand or water blasting equipment, unless other means are authorized by the Engineer. Bituminous street surfacing shall not be damaged by the removal operation. END OF SECTION PAVEMENT MARKINGS © 2020 City of Cottage Grove, Minnesota 32 17 23 - 5 This Page Left Blank Intentionally SECTION 32 92 00 TURF AND GRASSES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Restoration of construction area by installation of topsoil, topsoil/compost mixture, seed, sod, soil amendments, mulch, and erosion control. B. Related Sections: 1.Section 01 33 00 -Submittal Procedures. 2.Section 01 57 13-Temporary Erosion and Sediment Control. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Seeding: Measurement will be based upon pounds of seed placed as specified, according to type of seed mixture. Payment will include soil amendments, furnishing and installing seed, preparation of surface, and all incidental items associated with the work. 2. Sod, Mineral Type:Measurement will be based upon units of square yards of sod installed complete in place as specified, including soil amendments, furnishing and installing sod, preparation of surface, and all incidental items associated with the work. 3. Mulch: Measurement will be based upon units of acres, according to type, complete in place as specified. Payment will include preparation of seedbed, fertilizer, furnishing and installing mulch including disk anchoring, and all correlated activity. 4. Erosion Control Blanket: Measurement will be based upon units of square yards of area restored, according to the type of blanket installed. Payment will include all costs related to furnishing andplacing fertilizer, blanket, and all correlated activity. 5. Hydraulic Matrix: 1.Measurement will be per acreof area restored, according to the type hydraulic matrix used. Payment will include all costs related to furnishing and placing fertilizer, hydraulic matrix,and all correlated activity. 2. Measurement will be per square yard of area restored, according to the type hydraulic matrix used. Payment will include all costs related to furnishing and placing fertilizer, hydraulic matrix, and all correlated activity 6. Topsoil Borrow: Measurement will be per cubic yard (loose volume) of material hauled to the Site. Payment will include all costs related to furnishing the topsoil: 1. All costs related to placing, shaping, and compacting the topsoil at locations shown on the Drawings or as directed by the Engineer shall be incidental to the Boulevard Grading Bid Item. Where boulevard grading is not required, all costs are considered incidental to the various Seed or Sod Bid Items. 7. Topsoil/CompostMixture: Measurement will be per cubic yard (loose volume) of material hauled to and placed on the Site. Payment will include all costs related to furnishing the topsoil, compost, thoroughly mixing the compost with topsoil, and placing the mixture: TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 1 1. All costs related to placing, shaping, and compacting the topsoil/compost mixture at locations shown on the Drawings or as directed by the Engineer shall be incidental to the Boulevard Grading Bid Item. Where boulevard grading is not required, all costs are considered incidental to the various Seeding, Sodding, or Planting Bid Items. 8. Emergency Overflow Swale Grading and Restoration, Including Seed and Erosion Control Blanket: Payment for the grading and restoration of the emergency overflow swale will be made at the Unit Price per square yard. This shall be considered full compensation for all labor, equipment, and materials associated with the work as specified, including the seed and erosion control blanket: 1. No separate measurement and payment for seed and erosion control blanket will be made for areas paid for as Emergency Overflow Swale. 9. Application of Water for Turf Establishment: Measurement shall be based on each 1,000 gallons (MG) of water applied to restored areas.Payment at the Unit Price shall be considered payment in full for all labor, equipment, water, and material necessary to complete the watering as directed: 1. Compensation will be made for all watering activity during the initial 45 day maintenance period for seed. 2. Compensation for watering will be made for all watering activity during and following the 30 day maintenance period for sod. 10. Furnishing and installation of items to secure required restoration materials, including staples for erosion control blanket, shall be considered included in the Bid Item for that particular material. No separate measurement or payment will be made for such items. 11. All costs related to sweeping and cleaning any pavement, driveways, trails, sidewalks, etc. that are impacted by restoration activities shall be considered incidental to the restoration Bid Items. No payment will be made under the Street Sweeper With Operator and Skidsteer (Bobcat) With Operator Bid Items for this work. 12. Measurement of restored areas shall be on the area actually covered. No additional compensation will be made for overlapping of restoration materials, such as erosion control blanket. 13. Payment for Bid Items included within this section will made per MnDOT Spec. 2575.5.J. Partial payment of 50-percent of the contract unit items, with the remaining partial payment after proper maintenance and acceptance of the vegetative cover. 14. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation 8 Edition (MnDOT Spec.): 1. 2575 Establishing Turf and Controlling Erosion. 2. 2574 Soil Preparation 3. 3876 Seed. 4. 3877 TopsoilMaterial 5. 3878 Sod. 6. 3882 Mulch Material. 7. 3884 Hydraulic Erosion Control Products. 8. 3885 Rolled Erosion Control Products. 9. 3890 Compost. TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 2 B. Minnesota Department of Transportation Seeding Manual 2014(MnDOT Seeding Manual). 1.04 SUBMITTALS A. Provide the following submittals consistent with Section 01 33 00: 1. Provide source and invoice for seed to be used for this Project. 2. Written documentation verifying compliance of mixture of seed furnished. Include percentage of various seed species, year of production, germination rate, seed bag tags, and weed seed content. Submit to the Engineer at least 5 days prior to delivery. 3. Species within native seed mixes species shall have their origin documented by the Minnesota Crop Improvement Association (MCIA) to certify that the product is a local ecotype plant. 4.Notify the Engineer 30 days prior to placement topsoil/compost mixture to allow for inspection, sampling, and testing if necessary. 5. Provide documentation for tests of the topsoil and compost separately, and submit this information at the pre-construction meeting. 6. Topsoil material requirements per MnDOT Spec 3877.3. 7. Compost material requirements per MnDOT Spec 3890.3. 1.05 PLANT ESTABLISHMENT PERIOD A. The Establishment Period for plants shall begin for immediately after installation, with the approval of the Engineer, and continue until the date that the Engineer performs a final inspection: 1. The establishment period for sod is 30 days. 2. The establishment period for seeded areas is 45 days. 3. The germination period and initial growth for seeded areas is 14 days. 1.06 FIELD QUALITY CONTROL A. Provide Engineer with seed bag tags used for identification purposes. B. Boulevard settlements that occur during the correction period and are greater than 1 inch as measured by a 10foot straight edge will be repaired in a manner acceptable to the Owner at the C. Source testing: 1. The Contractor shall split and test a sample from prospective source with the Owner prior to the preconstruction meeting. 2. Paragraph 2.01.A. If the requirements are not met the Contractor must provide material from another source. D. Provide Engineer with loose volume measurement documents daily for Topsoil Borrow and Topsoil/Compost Mixture material. E. Placement testing: 1. The Contractor shall split and test a sample onsite at the time of placement with the Owner. TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 3 2. Paragraph 2.01.A. If the requirements are not met the material will be rejected. The Contractor is responsible for all costs associated with additional testing due to failing materials. 1.07 SEQUENCING AND SCHEDULING A. Begin final restoration within 7 calendar days of the bituminous initial lift paving or interim bituminous course paving and demonstrate continuous progress until completed, or as modified in Milestones per Section 00 52 10, Paragraph 4.02.A.1. B. Roadway Rehabilitation projects, begin final restoration within 5calendar days of the bituminous initial liftpaving and demonstrate continuous progress until completed, or as modified in Milestones per Section 00 52 10, Paragraph 4.02.A.1. PART 2PRODUCTS 2.01 TOPSOIL: Topsoil Borrow Conforming to MnDOT Spec. 3877.2.B, Loam Topsoil Borrow: A. Loam Topsoil Borrow must be supplied from an off-site source tested in accordance with Paragraph 3.13.A., meeting the requirement of 100% of the material passing the ¾ inch sieve. B. No existing on-site topsoil is to be used, unless approved by City Engineer. 2.02 FERTILIZER: Conform to MnDOT Spec. 3881.2.B.3, TYPE 3. A. Provide plant fertilizer that is commercial grade and uniform in composition and conforms to applicable state and federal regulations. B. Slow release fertilizer. A minimum of 70-percent of the nitrogen component shall be a slow- release water insoluble nitrogen. C. Fertilizer shall contain a minimum percentage by weight 10-10-10 (NKP). 2.03 SOD: Conform to MnDOT Spec. 3878.2.D, Mineral Sod. 2.04 SEED: Conform to MnDOT Spec. 3876: A. Lawns: MnDOTMixture 25-151. B. General Roadside: MnDOT Mixture 25-141. C. Temporary Spring Cover: MnDOT Mixture 21-111. D. Temporary Fall Cover: MnDOT Mixture 21-112. E. Temporary Mix: MnDOT Mixture 21-113. F. Pond Edge Mix: MnDOT Mixture 33-261. TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 4 2.05 MULCH: Conform to MnDOT Spec 3882: A. Type 1, clean grain straw unless identified otherwise. B. Hydraulic erosion control products may be used in lieu of mulch with the approval of the Engineer. 2.06 HYDRAULIC EROSION CONTROL PRODUCTS (HECPs): Conform to MnDOT Spec 3884 A. Hydraulic Matrix: 1. Mulch: Conform to MnDOT Spec. 3884.2.B.2 2. Bonded Fiber Matrix (BFM): Conform to MnDOT Spec 3884.2.B.4 2.07 ROLLED EROSION CONTROL PRODUCTS: Conform to MnDOT Spec 3885: A.Erosion Control Blanket, Category 3N Straw. B. Turf Reinforcement Mat, Category 1. 2.08 COMPOST: Conform to MnDOT Spec. 3890.2.B, Grade 2 Compost. PART 3 EXECUTION 3.01 EXAMINATION A. Review restoration areas with the Engineer. Determine locations for seed or sod. Schedule for restoration of areas may be revised to fit field conditions: 1. No compensation will be allowed for areas considered to be needlessly restored if restoration activities are performed without the authorization of the Engineer. B. Notify the Engineer at least 3 days in advance of hauling topsoil borrow on Site so the Engineer may visually inspect and sample for testing if deemed necessary. C. Finish grades are to be inspected and approved by the Engineer prior to start of restoration. 3.02DELIVERY AND STORAGE A. Delivery: 1. Notify the Engineer of the delivery schedule in advance so the plant material may be inspected upon arrival at the Site. Remove unacceptable plant material from the Site immediately. 2. Deliver fertilizer and lime to the Site in the original, unopened containers bearing the manufacturer's guaranteed chemical analysis, name, trade name or trademark, and in conformance to state and federal law. In lieu of containers, fertilizer and lime may be furnished in bulk and a certificate indicating the above information shall accompany each delivery. 3. During Delivery: Protect sod from drying out and seed from contamination. TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 5 B. Storage: 1. Sprinkle sod with water and cover with moist burlap, straw, or other approved covering, and protect from exposure to wind and direct sunlight. Covering should permit air circulation to alleviate heat development. 2. Keep seed, lime, and fertilizer in dry storage away from contaminants. 3.03 PREPARATION A. General: Conform to MnDOT Spec. 2575.3.A. B. Soil Preparation:Conform to MnDOT Spec. 2574. C.Fertilizers and Conditioners:Conform to MnDOT Spec. 3881 and 3879: 1. Apply fertilizer at a rate of 400 lbs. per acre (9.2 lbs./1,000 sq. ft.). 2. Where soil pH is lower than 5.5, apply lime at 3 tons per acre (140 lbs./1,000 sq. ft.). 3.04 TOPSOIL/COMPOST MIX A. Subgrade to be inspected and approved by Engineer prior to placement of topsoil/compost mix. B. Construct mix by thoroughly by blending topsoil and compost at 70-percent/30-percent ratio: 1. Off site blending of topsoil and compost is required 2. The blended materials shall be screened to 1 inch size. C. 6 inch minimum compacted thickness. D. The topsoil shall be placed to blend smoothly into existing establish vegetation, and shall be flush with existing bituminous and concrete surfaces with a tolerance of 1/2 inch, measured with a 10 foot straight edge. Grade of topsoil must be approved by Engineer prior to seeding operations. 3.05 SOWING SEED A. Seeding Preparation and Application: Conform to MnDOT Spec. 2574 and 2575.3.B for the mixes specified. B. Prior to placing hydraulic erosion control products (hydraulic matrix): 1. Install seed prior to hydraulic matrix spread seed over the entire Site. 2. The Site shall be harrowed or raked parallel to the slope contours following seeding. 3. The Site shall be packed using a culti-packer or equivalent, following harrowing. 4. Application of fertilizer. 3.06 PLACING SOD A. Conform to MnDOT Spec. 2575.3.F. B. Place, shape, and compact 6 inches of topsoil or 6 inches of topsoil/compost mix, as appropriate, prior to placement of sod. TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 6 3.07 MULCH: Conform to Section 01 57 13. 3.08 EROSION CONTROL BLANKET A. Erosion control blanket shall be installed immediately following seeding in accordance with MnDOT Spec. 2575.3.G.2, and as modified below. B. Raking or harrowing of soil/seed shall be done before installation of erosion control blanket. C. Install blanket parallel to the direction of flow in all cases. D. If permanent seeding is not available at the time of blanket installation, this material will have to be removed, re-seeded,and installed again as a permanent erosion control measure.If permanent seeding is available at the time of initial installation, a 1-time proper installation is acceptable. 3.09 HYDRAULIC EROSON CONTROL PRODUCTS A. Hydraulic Matrix: 1. Apply in conformance with MnDOT Spec. 2575.3.E. 2. Raking or harrowing of soil/seed and slope (cat) tracking shall be done before installation of hydraulic matrix. 3. Apply hydraulic matrix in at least 2 opposing directions so that a shadowing effect leaving the back side of a soil clod unprotected is minimized. 4. Application Rate: 1. Slopes steeper than 1:4: Apply at a rate of 2,800 lbs per acre. Two applications may be necessary. 2. All other slopes: apply at a rate of 2,100 lbs per acre. 5. Apply hydraulic matrix immediately following seeding. 3.10 EMERGENCY OVERFLOW SWALE A. Construct emergency overflow swales at locations shown on the Drawings. B. Grade the overflows as staked and directed. C. Upon approval of the grading, place topsoil, seed, and erosion control blanket. D. Re-establish the emergency overflow swale as part of the final Site clean-up and restoration. 3.11 SWEEPING AND CLEANUP A. Immediately following the topsoil, seed and sod placement, sweep and clean all pavement, driveways, trails and sidewalks impacted these operations: 1. Final clean up of the bituminous surface with the use of a power pickup broom and front end loader/skidsteer. 2. Street sweeping operations must include the application of water to effectively remove fine materials from pavement areas. The appropriate amount of water shall be applied, eliminating dust as part of the sweeping operations. TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 7 3. Respond within 24 hours of a request by the Engineer, with the necessary street sweeping equipment to perform the cleanup operations. 3.12 MAINTENANCE: A. Conform to MnDOT Spec. 2575.3.K, or as modified herein: B. Restored areas that have been satisfactorily completed and are disturbed by additional construction activity required by the timing and sequencing of the Work shall be restored over to the same requirements of the original work. C. Any sod that does not show definite growth and establishment 30 days after installation shall be replaced and established at the proper season by the Contractor at his/her expense. D. Seed maintenance shall be done in conformance with the MnDOT Seeding Manual With the following exception: Water the seeded areasto ensure establishment: 1. Compensation will be made for all watering activity during the initial 45 day maintenance period for seed, per Bid Item for Application of Water for Turf Establishment. 2. At the end of the 45 day maintenance period, Engineer will make an inspection of all restored areas. Engineer may direct Contractor to continue watering of any area if deemed necessary. Frequency of watering shall be as directed and modified by the Engineer. Duration of watering shall continue at the directed frequency until Contractor is directed by Engineer to cease. E. Weed control shall be the responsibility of the contractor during the initial 45 day establishment period. Weed control may include spot spraying and mowing to control weed growth. F. Seeded areas that do not show seed germination 14 days after installation shall be replaced at the proper season by the Contractor at his/her expense and watering will be required every day at a minimum. G. Seeded areas that do not show definite growth and establishment 45 days after installation shall be replaced and established at the proper season by the Contractor at his/her expense. H. Watering of sod areas shall be done for a minimum period of 30 days from installation sufficient to ensure establishment of permanent vegetation: 1. At the end of the 30 day maintenance period, Engineer will make an inspection of all restored areas. Engineer may direct Contractor to continue watering of any area if deemed necessary. Frequency of watering shall be as directed and modified by the Engineer. Duration of watering shall continue at the directed frequency until Contractor is directed by Engineer to cease. 3.13 FIELD QUALITY CONTROL A. TOPSOIL BORROW: 1. Source testing: 1. The Contractor shall split and test a sample from prospective source with the Owner prior to the preconstruction meeting. TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 8 2. ample shall meet the requirements of section 2.01A. If the requirements are not met the Contractor must provide material from another source. 2. Placement testing: 1. The Contractor shall split and test a sample onsite at the time of placement with the Owner. 2. T section 2.01A. If the requirements are not met the material will be rejected. The Contractor is responsible for all costs associated with additional testing due to failing materials. 3.14 INSPECTION AND ACCEPTANCE A. Seeding and turf work will be inspected for acceptance in parts agreeable to the Engineer, provided Work offered for inspection is complete, including maintenance for the portion in question. B. Seeded areas will be inspected for germination and growth 14 days after placement. Any restored areas that do not show definite germination and growth, as determined by the Engineer, shall be replaced and re-established by the Contractor at his/her expense. C. At the conclusion of the establishment period(s), a final inspection of planting(s) will be made to determine the conditions of areas specified for landscaping. D. When inspected landscape work does not comply with requirements, replace rejected Work and continue specified maintenance until re-inspected by Engineer and found to be acceptable. Remove rejected materials from the Site. E. Seed evaluation at the conclusion of the establishment period related to acceptance, shall be based on at least 1 species per square foot with 90-percent of seeding per square foot being of the permanent seed species within the applied mix. END OF SECTION TURF AND GRASSES © 2021 City of Cottage Grove, Minnesota 32 92 00 - 9 This Page Left Blank Intentionally SECTION 32 93 00 TREES, SHRUBS, PERENNIALS PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. This section covers the furnishing of all labor, materials, tools, equipment and performance of all work and services necessary or incidental to plant installation as indicated on the drawings or as specified herein. B. Related Sections: 1.American National Standards Institute (ANSI) a. ANSI Z60.1 American Standard for Nursery Stock. 2. Unless noted otherwise, the provisions in this section are in addition to the referenced specification. 1.02 PRICE AND PAYMENT PROCEDURES: A. Measurement and Payment: 1. Measurement and compensation for the following items shall be paid according to the referenced specification or as modified below: a. Deciduous Trees or Coniferous Trees: Measurement will be by each tree species, variety, and caliper and/or size range furnished and planted in accordance with the Drawings. Payment shall include: 1) Excavation for tree planting hole. 2) Furnishing and Planting of tree. 3) Furnishing and installing accessories. 4) Maintenance and watering, including furnishing and installing slow release watering bag. b.Shrubs: Measurement will be by each shrub species, variety, and size range furnished and planted in accordance with the Drawings. Payment shall include: 1) Excavation for planting hole. 2) Furnishing and Planting of shrub. 3) Furnishing and placing mulch. c. Perennials: Measurement will be by each perennial species, variety, and size range furnished and planted in accordance with the Drawings. Payment shall include: 1) Excavation for planting hole. 2) Furnishing and Planting of perennial. 3) Furnishing and placing mulch. d. Transplant Tree: Measurement will be per each tree, regardless of size or type. Payment will include salvaging the tree, temporarily storing the tree during construction, and re- planting the tree as specified in the same general location and as directed by the Engineer. 2. All other work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. TREES, SHRUBS, PERENNIALS © 2021 City of Cottage Grove, Minnesota 32 93 00 - 1 1.03 REFERENCES A. Minnesota Department of Tr, 2018 (MnDOT Spec.): 1. 2571 Plant Installation and Establishment PART 2 PRODUCTS 2.01 MATERIALS A. Nursery Stock: 1. Plant materials shall conform to the requirements of MnDOT Spec. 3861 and ANZ60.1. 2.No substitutionswill be accepted without written approval from the Owner or Engineer. 3. Treated burlap will be allowed on soil balls, as an exception to MnDOT Spec. 2571.3.F, and 3861.2.G, if vertical slits are cut through the burlap. The vertical slits shall be made at 6 inch intervals horizontally around the circumference of the root ball and shall be made from the top of the root ball extending downward and shall be done in a manner which does not damage the root system. B. Fertilizer: Conform to MnDOT Spec. 3881.2.B.3 - Type 3 - Slow Release Fertilizer. C. Mulch: Conform to MnDOT Spec. 3882, or as modified below: 1. Shredded hardwood mulch shall be provided free of dirt, ashes, sawdust, rocks, leaves, roots, black bark mold or any other debris. D. Soil moisture Amendment Pellets: Soil Moist Professional Granular by JRM Chemical, Inc. or approved equal. E. Slow Release Watering Bag: Treegator® Original or approved equal. PART 3 EXECUTION 3.01CONSTRUCTION REQUIREMENTS A. Planting operations shall not be started, nor shall any planting stock be delivered to the Project site, until all other work has been completed in the area of the proposed planting site as determined by the Engineer. B. Notify the Engineer orally or in writing, as designated by the Engineer, at least 24 hours prior to the start of any planting operations during this Contract, including layout staking, clearing, weed spraying, soil preparation, watering, mulching, plant protection, weeding and clean-up. C. All planting operations shall be performed during normal working hours and under conditions suitable for such work, as determined by the Engineer, unless otherwise authorized by the Engineer. D. The Engineer and City Parks Department will field stake the location of trees to be planted. All other plantings shall be staked by the contractor then reviewed and accepted by the City prior to installation. TREES, SHRUBS, PERENNIALS © 2021 City of Cottage Grove, Minnesota 32 93 00 - 2 E. Trees delivered with the root flare more than 3 inches below the ball will be rejected. F. Set tree plumb and maintain throughout the establishment period. Place root ball on firm unexcavated or tamped soil. Tamp soil around base of the root ball with foot pressure so that root ball does not shift. Remove all flagging and labels. G. Prune branches to a minimum 5 foot to allow for a clear sight distance. Do not heavily prune the tree at planting. Prune only crossover limbs, co-dominant leaders and broken branches. Some interior twigs and lateral branches maybe pruned. Do not remove the terminal buds that extends to the edge of the crown. H. During the spring planting season, any evergreen plant delivered with new growth in advance stage of candling out will be rejected. Evergreen trees not fully branched from the bottom to top will be rejected and those terminal leaders exceeding 12 inches in length will be rejected. I.Trees planted within heavy soils, extend the excavation and backfill soil around the root ball to a point 6 inches below the bottom of the root ball to ensure adequate drainage. J. Establish final grade prior to planting trees. K. Balled and Burlapped Tree Planting: 1. Construct planting hole to be 3 times as wide as the diameter of the root ball. 2. Construct planting hole to be deep enough so the root flare is 1-2 inches above finished grade. 3. Scarify the sides of the planting hole to avoid glazing. 4. Remove any excess soil to expose the root flare after placing the tree in the planting hole and adjust the depth as necessary to keep root flare 1-2 inches above finished grade. 5. Remove a minimum 2/3 of the wire basket and as much burlap as possible from the root ball. 6. Remove all twine or rope and plastic wrap from the root ball. 7. Backfill with soil from the original planting hole, tamping every few inches while backfilling. Keep the root flare exposed. 8. Taper the outside edges of the backfill slightly below the original grade to help retain water. L.Container Grown Trees: 1. Construct planting hole to be 3 times as wide as the diameter of the root ball. 2. Construct planting hole to be deep enough so the root flare is 1-2 inches above finished grade. 3. Scarify the sides of the planting hole to avoid glazing. 4. Remove the container from the root ball by slicing the sides of the container. Use fingers or small tools to pull roots out of the outer layer of the potting soil, then cut or pull apart any circling roots. 5. If the tree is heavily pot bound, use the box cut method to reduce the chance of girdling roots. Using a pruning saw, cut 1-3 inches off the roots on 4 sides, leaving a square or box to be planted. 6. Remove any excess soil to expose the root flare after placing the tree in the planting hole and adjust the depth as necessary to keep root flare 1-2 inches above finished grade. 7. Backfill with soil from the original planting hole, tamping every few inches while backfilling. Keep the root flare exposed. 8. Taper the outside edges of the backfill slightly below the original grade to help retain water. TREES, SHRUBS, PERENNIALS © 2021 City of Cottage Grove, Minnesota 32 93 00 - 3 M. Mulching: 1. Place a layer of mulch 2-4 inches thick extending 1-2 inches past the outside of the planting hole. 2. Do not mulch in contact with tree trunk. Leave 2-3 inches of space between the root flare and mulch. 3. Place mulch within 48 hours of second watering. 4. The outside boundary of the mulch ring should be raised slightly to help retain water. 5. Staked only as needed and directed by the Engineer. 6. Stake when the root ball moves easily while the top of the tree is being moved back and forth or when the top cannot support itself and is bending. 7. Materials directly connecting to the tree should have a broad smooth surface. 8. Place stakes 6 inches inside the mulched area directly across from each other. 9.Wire or rope used to connect the stake to the tree should be loose enough to allow the tree to move slightly in all directions. 10. Stake the tree as low as possible, but not higher the 2/3 the height of the tree. N. Soil Moisture Amendment: 1. Apply per manufactures recommendations. 2. This item shall be considered incidental to the respective planting. O. Shrub and Perennial Planting: 1. Excavate planting hole to a width of 2 times the container size. 2. Excavate planting hole to the depth of the container. 3. Furnish and install specified plant. 4. If plant is shipped in a container remove the container from the root ball by slicing the sides of the container. Use fingers or small tools to pull roots out of the outer layer of the potting soil, then cut or pull apart any circling roots. 5. Set root ball flush with finish grade. 6. Backfill with soil from the original planting hole. Respread any excess excavated material. 7. Place mulch 3 inches thick, unless otherwise specified on the drawings. Do not place mulch in contact with the plant. Place mulch within 48 hours of second watering. 8. Do not heavily prune at planting. Prune only broken or dead branches, retaining natural form. P. The Plant Establishment Period shall be 2 years, and shall begin upon written approval of the work by the Engineer. Replacement of dead or defective trees or incidental materials shall be required immediately or as soon as is practicable within an appropriate period of time as ordered by the Owner or Engineer. It is anticipated that the plant establishment will be included in the specified warrantee period and that no retainage will be held throughout the plant establishment period unless the Owner or Engineer determine that the materials or procedures warrant such a retainage. Q. Watering during the Plant Establishment Period shall consist of maintaining adequate (but not excessive) soil moisture at all times. Each tree planted shall have a slow release watering bag furnished and installed per recommendation in addition to the watering requirements. It is recommended that after the initial thorough "watering in", every tree should receive a thorough watering, as necessary, at weekly intervals, on the average, throughout the growing season (approximately May 1 thru October 1). Avoid over watering all trees. GENERAL water guidelines for the average condition are as follows: TREES, SHRUBS, PERENNIALS © 2021 City of Cottage Grove, Minnesota 32 93 00 - 4 Plant Type Average Amount of Water Per Application Machine Transplanted Trees (3" caliper 50 to 100 Gallons plus) Balled & Burlapped Trees 20 Gallons ± Bare Root Trees15 Gallons ± Balled & Burlapped Shrubs 10 Gallons ± Bare Root or Container Shrubs 7 Gallons ± 3.02 DISPOSAL OF EXCESS AND WASTE MATERIALS A. Remove excess and waste materials, including unacceptable excavated material, trash, and debris from the job site. END OF SECTION TREES, SHRUBS, PERENNIALS © 2021 City of Cottage Grove, Minnesota 32 93 00 - 5 This Page Left Blank Intentionally SECTION 33 05 05 TRENCHING AND BACKFILLING PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Trenching requirements for underground piping and appurtenances, including requirements for excavation, backfill, and compaction. B. Related Sections: 1.Section 01 3300 -Submittal Procedures. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Trench Excavation: Excavation and backfilling of trench and associated excavation for pipe bedding shall be included in the price of pipe provided. 2. Pipe Bedding All costs associated with providing the bedding material as shown on the Drawings and Standard Detail Plate BED-1 shall be considered incidental to the pipe material. 3. Rock Excavation: Measured from the top of the rock to a point 12 inches below the outside barrel of pipe and 12 inches from each side of outside diameter of pipe (at bell). The minimum trench width of Rock Excavation shall be 48 inches. For measurement purposes, volume will be computed based on vertical walls for the width specified above. Payment for Rock Excavation shall be at the Unit Price per cubic yard. Any additional Rock Excavation required for shelving or OSHA Standards will not be measured for payment and will be considered incidental to the Rock Excavation Bid Item: a. The estimated quantity of Rock Excavation shown in the various parts of the Bid Form were calculated as described above, based on the top of rock elevations determined by either soil borings and/or test hole excavations. No guarantee is made as to the actual quantity of Rock Excavation that will be encountered in this Project. No variation from the Unit Price for Rock Excavation will be considered or allowed due to quantity variation. b. Separate Bid Items have been provided for Rock Excavation Soft Rock and Hard Rock. Payment will be made based on the method or rock excavation actually used in the field. Any excavation performed with a standard backhoe bucket will not be considered rock excavation. 4. Haul Excess Rock Off Site (LV): Measurement will be by the cubic yard of material hauled off site, based on a truck count. Payment will include all costs related to hauling and disposing of the material off the Site. a. Any excess rock hauled off site must be approved by Engineer prior to removing. 5. Sand Cushion: Measurement shall be by the units of linear feet. Payment at the Unit Price shall include all costs related to providing the material as shown on the Drawings and Standard Detail Plate. 6. Granular Borrow: Measurement shall be by the ton of material compacted in place as determined from weight tickets delivered to the Engineer and shall include all costs related to providing the material as shown on the Drawings and Standard Detail Plate. TRENCHING AND BACKFILLING © 2021 City of Cottage Grove, Minnesota 33 05 05 - 1 7. Improved Pipe Foundation: Measurement shall be by the linear foot for each 6 inch layer placed below pipe bedding, not including the first 6 inches: a. For example, if2 feet of foundation material is required under a pipe; 6 inches of material is required for bedding, and payment will be made for 3 linear feet of pipe foundation material, 6 inches deep, per foot of pipe installed. b. No payment will be made without the knowledge or consent of the Engineer. c. No payment will be made for subgrade rock installed for de-watering purposes only, unless specified. d. No payment will be made for disposing of excavated material off the Site that has been created by placement of improved pipe foundation. 8. Temporary Bracing and Sheeting: Considered part of the excavation costs with no additional compensation to Contractor, unless provided for otherwise. 9.Density Tests: a. Passing Tests: All costs paid by Owner. b. Failing Tests: All costs will be deducted from payments to Contractor. 10. Dewatering: No explicit, direct payment is made for this work. Include the costs in the Unit Prices for the pipe or structure installed. 11. Excavation Special (Pothole Existing Private Utility): This Bid Item is for potholing and exposing existing private utilities that may be in conflict with the proposed public utilities. Measurement will be per each location exposed regardless of the number of utilities in the respective location. Payment will include all cost related to exposing the potential conflict: a. The quantity shown on the Bid Form is an estimated amount. Payment will be based on the quantity actually used, regardless of the estimated quantity. No revision to the Contract Unit Price shall be considered or allowed due to variations of the actual quantity from the estimated amount. 12. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation , 2018 (MnDOT Spec.): 1. 2105 - Excavation and Embankment. 2. 3149 - Granular Material. 3. 1711 Use of Explosives B. American Society of Testing Materials (ASTM): 1. A798 -Standard Practice for Installing Factory-Made Corrugated Steel Pipe for Sewers and Other Applications. 2. D2321 - Standard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications. C. American Water Works Association (AWWA): 1. C150 - Thickness Design of Ductile-Iron Pipe. 2. C151 - American National Standard for Ductile-Iron Pipe, Centrifugally Cast for Water. TRENCHING AND BACKFILLING © 2021 City of Cottage Grove, Minnesota 33 05 05 - 2 1.04 SUBMITTALS A. Provide the following submittals consistent with Section 01 33 00: 1. Product Data for each Borrow Material: a. Name and location of source. b. Results of gradation tests. 1.05 DEFINITIONS A. Bedding: The soil material adjacent to the pipe which makes contact with the pipe foundation, walls of the trench, and upper level of backfill. The purpose of bedding is to secure the pipe to true line and grade, and to provide structural support to the pipe barrel. B. Foundation: Soil material beneath the pipe bedding. C. Improved Pipe Foundation: Foundation provided by importing material from sources outside the Site. Required when foundation is soft or unstable. D. Coarse Filter Aggregate: Free draining mineral product used around draintile pipe. E. Rock Excavation (Hard Rock): Includes such rocks that are not decomposed, weathered, or shattered, and which will require blasting, hydro-hammering, barring, wedging, or use of air tools for removal. Also included are any boulders, concrete, or masonry structure (except concrete pavement, curb and gutter, and sidewalk) exceeding 1 cubic yard. F. Rock Excavation (Soft Rock): Includes such rocks that are decomposed, weathered, or shattered, and which will require the use of ripping equipment, such as rock buckets and ripper hooks. G. Pipe Zone: That part of the trench below a distance of 1 foot above the top of the pipe. H. Sand Cushion: Aggregate bedding material used around pipe in areas where rock excavation is encountered, where pipe insulation is used, and when crossing existing utilities. I. Granular Borrow: Includes the area below the subgrade and above the pipe zone when shallow pipe is installed in areas of rock excavation. 1.06 SEQUENCING AND SCHEDULING A. Known existing underground utilities are shown on the Drawings in a general way. Owner does not guarantee the locations as shown on the Drawings. Anticipate variations in both the vertical and horizontal locations of underground utility lines from those shown on the Drawings. B. Uncover utilities and verify both horizontal and vertical alignments sufficiently in advance of construction to permit adjustments in the Work. Determine location of existing utilities and identify conflicts before excavating trench for pipe installation. C. Notify Gopher State One Call before starting construction in a given area, requesting utility locations in the field. TRENCHING AND BACKFILLING © 2021 City of Cottage Grove, Minnesota 33 05 05 - 3 D. Provide continuance of flow of existing sewer and other facilities. E. Backfill and compact all trench excavations promptly after the pipe is laid. F. Salvage and re-spread existing topsoil within trench and spoil pile areas. This work shall be considered incidental to the pipe installation. 1.07 WARRANTY A. Trench settlements that occur during the correction period and are greater than 1/2 inch as measured by a 10 foot straight edge will be repaired in a manner acceptable to the Owner at the . PART 2 PRODUCTS 2.01 PIPE BEDDING MATERIAL A. Comply with MnDOT Spec. 3149.2.B.1 for Granular Borrow, modified with the following: 1. No existing onsite granular material encountered during construction may be used unless approved by Engineer, based on quality control gradations provided by the Contractor for the onsite material being placed. The rate of testing will be determined based on changes of the existing material, or as determined by Engineer. 2. 1 inch maximum aggregate size. 3. Only virgin materials allowed. 2.02 IMPROVED PIPE FOUNDATION MATERIAL A. Comply with MnDOT Spec. 3149.2.H, as modified herein: 1. Crushing Requirements: At least 50-percent of the material by weight retained on the No. 4 sieve shall have 1 or more crushed faces. 2.03 SAND CUSHION MATERIAL A. Comply with MnDOT Spec. 3149.2.B.1 for Granular Borrow, modified with the following: 1. No existing onsite granular material encountered during construction may be used unless approved by Engineer, based on quality control gradations provided by the Contractor for the onsite material being placed. The rate of testing will be determined based on changes of the existing material, or as determined by Engineer. 2. 1 inch maximum aggregate size. 3. Only virgin materials allowed. 2.04 BACKFILL MATERIAL A. Suitable materials selected from the excavated materials to the extent available and practical. B. Suitable materials are mineral soils free of rubbish, trees, stumps, branches, debris, frozen soil, oversize stone (greater than 1 cubic foot), concrete and bituminous chunks, and other similar unsuitable material. TRENCHING AND BACKFILLING © 2021 City of Cottage Grove, Minnesota 33 05 05 - 4 C. When suitable materials are not available, as determined by the Engineer, comply with MnDOT Spec. 3149.2.B.1 for Granular Borrow. PART 3 EXECUTION 3.01 EXAMINATION A. Prior to construction, inspect existing utility structures and surface features, and document condition. B. Re-inspect foundation soils if rain fall or snow has occurred after initial inspection but prior to placing pipe and bedding. C. Prior to construction,perform the Excavation Special (Pothole Existing Utility) for the purpose of determining possible conflicts between existing private utilities and proposed public utilities. Allow sufficient time for private utility companies to relocate facilities or Engineer to redesign public utilities. 3.02 PREPARATION A. Notify Utility Owners to field mark their utility locations. B. Protect as necessary surface features, such as utility poles, trees, structures, pavement, etc., that are not designated on the Drawings to be removed. C. Notify utility companies of progress schedule so they can accomplish any necessary relocations and removals that they have agreed to relocate, remove, or support. D. Implement traffic control. E. Complete temporary removal or relocation of surface features, such as fences, shrubs, signs, and mailboxes. F. Strip off existing topsoil from within the trench excavation limits and stockpile. Separate vegetative strippings from salvageable topsoil and dispose of appropriately. G. Crossing Under Existing Utility Lines: 1. Use extreme care when excavating in the vicinity of underground utility lines to avoid damage to protective coatings or surfaces. 2. Where possible and as authorized by the utility, temporarily remove the utility line, install the new pipe, and reinstall the utility line. 3. Where existing line cannot be removed or is not feasible to remove, securely support, excavate under, backfill under and around the utility line to 100-Percent Standard Proctor Density. 4. Report and repair damaged lines prior to backfilling trench. H. Rock Excavation: 1. Contractor shall submit a blasting plan for review and approval by the Engineer. 2. Use of explosives comply with MnDOT Spec. 1711. TRENCHING AND BACKFILLING © 2021 City of Cottage Grove, Minnesota 33 05 05 - 5 3.03 CONSTRUCTION A. Conform to ASTM C2321 and C1479, or modified herein. B. Trench Excavation: 1. Excavate trench to alignment and grade shown on the Drawings. 2. The trench width at the surface may vary and depends on the depth of trench and nature of the excavated material encountered. However, it shall be of ample width to permit the pipe to be laid and jointed properly and the backfill to be placed and compacted properly. 3. Correct any part of the trench that is inadvertently excavated below grade with approved material compacted to 100-Percent Standard Proctor Density. 4. Brace, shore, or sheet trench and provide drainage. Comply with applicable State Regulations relating to industrial safety to a safe angle of repose.Angle of repose may be no less than that required by the Accident Prevention Division of the State Industrial Commission or the requirements of the Occupational Safety and Health Act (OSHA), whichever is most restrictive. 5. Pile all excavated material in a manner that will not endanger the Work or obstruct sidewalks, driveways, gutters, etc. 6. Segregate soils in the excavated material that are not suitable for trench backfill and dispose of in a manner that is consistent with the requirements specified herein under "Backfill Above Pipe Zone." 7. Dispose of excess excavated materials off of right-of-ways and easements in a suitable site selected by the Contractor. 8. Haul materials, other than natural soil materials that are suitable as backfill material, to an approved landfill as directed by the Engineer. 9. It is anticipated that private utility crossings will be encountered and may interfere with the proposed public utilities. a. Pothole and expose existing private utility crossings to determine location and elevation. b. Perform construction activities in the vicinity of the private utilities so as not to disturb the existing crossings. 10. If frost thickness exceeds 6 inches, all frost chunks must be removed from the Site and non- frozen material must be used to backfill the excavation. C. Water Control: 1. Dewater the ground as necessary to excavate the trench and install the pipe. All pipe and structures shall be laid in a dry condition prior to backfill. Maintain groundwater level a minimum of 1 foot below the pipe invert. Measure the rate of flow from dewatering pumps at the beginning of the dewatering operation(s) and once per week thereafter. Keep a daily log of hours pumped. D. Trench Bottom: 1. Excavate to a sufficient depth to insure adequate foundation when the bottom of the trench is soft or where in the opinion of the Engineer unsatisfactory foundation conditions exist. Bring excavation up to pipe grade with thoroughly compacted granular materials meeting the requirements of Improved Pipe Foundation Material. 2. Provide temporary support, remove, relocate, or reconstruct existing utilities located within the trench excavation. Utility shall designate method employed. Use particular care and provide compacted fill or other stable support for utility crossings to prevent detrimental displacement, rupture, or failure. TRENCHING AND BACKFILLING © 2021 City of Cottage Grove, Minnesota 33 05 05 - 6 3. Excavate to expose existing utilities that cross in close proximity to the planned pipe line to determine the utilities' exact location sufficiently ahead of pipe installation to plan for the avoidance of grade conflict. Measure to determine the utilities' location relative to the planned pipe line location. A deviation from the alignment, grade, and location to avoid conflict may be ordered by the Engineer. 4. In locations where rock affects the pipe foundation, excavate the trench 12 inches below the pipe and place sand cushion material up to the top of the pipe zone. Blend suitable on Site backfill material with any rock (1 cubic foot maximum size) that is placed back in trench. Dispose of excess rock at a suitable location outside the Site: a. Sand Cushion: The removal and disposal of the unsuitable material within the trench and below the invert elevation, and the replacement up to invert elevation with the appropriate bedding material. b.Granular Borrow: The removal and disposal of unsuitable material within the trench, above the pipe zone, and replacement up to the subgrade with appropriate backfill material, per Standard Detail Plate BED-4. No additional compensation will be allowed for wider or deeper trenches in rock excavations. c. For PVC, Corrugated PP, and HDPE Pipe, the sand cushion shall be placed to 1 foot above the pipe and shall be paid as pipe bedding. The remainder of the trench up to the top of the rock shall be backfilled with granular backfill material. 5. Improved Pipe Foundation: When unsatisfactory foundation conditions exist, excavate to a depth consisting of solid materials. Fill to pipe grade with thoroughly compacted granular materials meeting the requirements of Improved Pipe Foundation Material. 3.04 PIPE BEDDING A. PVC Pipe: Bed pipe in accordance with ASTM D2321 and Standard Detail Plate BED-1. B. RCP: Bed pipe in accordance with Class C-1 Bedding and Standard Detail Plate BED-2. C. DIP: Bed pipe in accordance with AWWA Standard C150 and C151 and Standard Detail Plate BED- 2. D. HDPE Pipe: Bed pipe in accordance with ASTM D2321 and Standard Detail Plate BED-1. E.Corrugated Metal Pipe: Bed pipe in accordance with ASTM A798and Standard Detail Plate BED-2. F. The pipe trench directly under the pipe shall be loosely placed un-compacted material per the Standard Detail Plates. G. Use only selected materials free from rock, boulders, debris, or other high void content substances to a level 1 foot above the top of pipe. Remove ledge rock, boulders, and large stones to provide at least 6 inch clearance from pipe. H. Dig bell holes of ample dimension at each joint such that the pipe barrel rests continuously on the bedding. 3.05 BACKFILL WITHIN PIPE ZONE TRENCHING AND BACKFILLING © 2021 City of Cottage Grove, Minnesota 33 05 05 - 7 A. Backfill immediately after pipe is laid. Restrain pipe as necessary to prevent their movement during backfill operations. B. Place material completely under pipe haunches in uniform layers not exceeding 4 inches in depth. C. Hand (shovel/slice) tamp along pipe within haunch zone to provide a solid pipe foundation. 3.06 BACKFILL ABOVE PIPE ZONE A. Use suitable materials meeting the requirements of Backfill Material. B. Place in uniform depth layers not to exceed 12 inches before compaction. Complete the compaction of each layer before placing material for the succeeding layer. C. Compact each layer by mechanical means until it meets the requirements of MnDOT Spec. 2105.3.F.1. Trenches shall be compacted to a minimum of 95-percent, except to 100-percent in the upper 3 feet: 1. Trenches between existing or future buildings or structures shall be compacted to a minimum of 100-percent for the entire depth of the trench. D. The method and means of placement and type of compaction equipment used is at the discretion of the Contractor. However, all portions of the trench backfill must meet minimum specified compaction requirements. E. Any deficiency in quantity of backfill material (caused by shrinkage or settlement) shall be supplied at no additional cost to the Owner. F. Excavated material not suitable or required for backfill shall be disposed of outside of the Site. G. It is assumed that all backfilling of trenches will be performed using on Site, excavated trench material. If the Contractor is unable to meet the specified density requirements using that material due to excess moisture content or other circumstance beyond their control, they shall immediately notify the Engineer of such condition. Following investigation of the circumstances, the Engineer, Contractor, and Owner shall mutually agree upon the proper course of action to address the issue. H. Any excavated rock that is placed back in the trench shall be crushed to a maximum rock size of 12 inches and adequately mixed with suitable on Site backfill material before being placed and compacted in the trench. 3.07 FIELD QUALITY CONTROL A. Density Tests: to be performed by an approved soils testing firm at various locations and depths throughout the Site as directed by the Engineer. Cooperate fully and provide assistance as necessary to complete these tests. B. Failed density test areas shall be excavated and re-compacted until the density requirements are met. END OF SECTION TRENCHING AND BACKFILLING © 2021 City of Cottage Grove, Minnesota 33 05 05 - 8 SECTION 33 05 17 ADJUST MISCELLANEOUS STRUCTURES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Adjustment of utility structures. B.Related Sections: 1. Section 01 57 13 Temporary Erosion and Sediment Control. 2.Section 33 10 00 Water Main Utilities. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Payment at the Bid Unit Price for all items is considered compensation in full for all materials and Work required to furnish and install the Bid Item in place. 2. Adjust Manhole Casting and Adjust Valve Box: a. New and Existing Manholes and Valve Boxes Within Bituminous Surfaced Area: 1) Payment for adjustment for new and existing manholes and valve boxes shall be made for each structure adjusted as specified. b. New Manhole and Valve Boxes In Non-Bituminous Surfaced Areas: 1) No separate payment for adjustment to final grade will be made. Adjustment of the structure shall be considered incidental to the Bid Items for the furnishing and installation of each type of structure. c. Existing Manholes and Valve Boxes In Non-Bituminous Surfaced Areas: 1) Payment for adjustment of the manholes and valve boxes to final grade shall be made for each manhole and valve box as specified. 3. Adjust Manhole Casting (Cast Iron Manhole Adjusting Ring): Measurement will be per each structure adjusted by means of furnishing and installing steel adjusting ring as specified. Payment for adjustment to final wearing course grade for new and existing manholes. 4. Adjust Catch Basin Casting: a. New and Existing Catch Basins: 1) Payment for final concrete curb and gutter grade shall be made for new and existing catch basins on the basis of each structure adjusted, as specified: a) Furnishing and installing erosion control around structure will be paid in accordance with Section 01 57 13. 5. Clean Out or Curb Box Protective Cover: Measurement will be per each and shall include excavation, furnishing, and installation. 6. Extend Hydrant Barrel: Measurement will be by the linear foot of adjustment made, including the heavy-duty rod assembly, if required. 7. Valve Box Extension: Payment for the furnishing and installation of valve box extension sections on either new or existing valve boxes shall be made on the basis of the linear feet of extension sections installed. ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 1 8. All work associated with the surfacing removal, excavation, material replacement, compaction, and patching necessary for the adjustment of structures within bituminous surfaced areas shall be considered incidental to the adjustment. 9. For street rehabilitation projects, or if required by the Engineer, use of parachute is incidental to manhole adjustment. 10. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. American Society of Testing and Materials (ASTM): 1. ASTM A48 Specification for Gray Iron Casting. 2.ASTM D1248 Polyethylene Plastics Molding and Extrusion Materials. 1.04 DEFINITIONS A. Adjust Manhole or Catch Basin Casting: A change in rim elevation accomplished for manholes or catch basins through the addition or removal of adjustment rings only. Adjustment does not include the addition or removal of sections from the structure. B. Adjust Valve Box: A change in elevation of the top of the valve box accomplished through the raising or lowering of the existing top section of the valve box only. Adjustment does not include the addition or removal of sections from the valve box. C. Remove and Replace Adjustment Rings: The process of removing the existing concrete adjustment rings from an existing structure and placing new rings on manholes and catch basins. 1.05 SEQUENCING AND SCHEDULING A. Contractor, Engineer, and Owner shall inspect all existing structures prior to beginning construction. B. Owner will remove any foreign material found in the existing structures prior to construction. Removeany foreign material that enters the structures during construction. Notify owner any time foreign materials enter structures regardless of the amount of material. C. When temporarily removing existing castings and valve box top sections, place castings and valve top sections in the boulevard area directly behind the curb, and in line with the existing structure for the purpose of locating the plated structure and valve box. D. Use care when removing bituminous surfacing around existing structures to avoid damage to existing materials. Replace any castings or valve box materials damaged during the surfacing removal with equal materials at no cost to the Project. E. Bituminous street patching associating with the structure adjustment shall be completed the same day as the structure is adjusted, including manhole casting protection. ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 2 PART 2 PRODUCTS 2.01 ADJUSTING RING A. High-Density Polyethylene (HDPE): Molded high-density polyethylene conforming to ASTM D1248. B. Cast Iron Manhole Adjusting Ring: R-1979 Series adjusting ring as manufactured by Neenah Foundry, or approved equal. 2.02 ADHESION MATERIALS A.Ram-Nek material, or approved equal. B. Sealant (For HDPE Rings): 1.DOW 999 A building caulking and glazing sealant, or approved equal. 2. Open cell polyurethane foam sealant with adhesive backing. 2.03 HYDRANT EXTENSIONS A. Sections: Match existing hydrant manufacturer and model. 2.04 CASTINGS A. Manhole, Catch Basin Frames, and Covers: 1. Requirement: ASTM A48. 2. Material: Class 35 cast iron. Best grade. Free from injurious defects and flaws. 3. Finish: Coal tar pitch varnish. 4. Finish Preparation:Sandblast. 5. Machine cover and frame contact surface for non-rocking protection. 6. Type and Style: a. NEENAH R-1642 , or approved equal, for sanitary manholes. Covers stamped . Use 2 inch letters. b. NEENAH R- inch letters c. NEENAH R-1642-A, short casting 5 inch height d. NEENAH R-3067-VB (use at low points), and R-3067-V (not at low points), or approved equal, for storm sewer catch basin manholes and catch basins. e. NEENAH R-4342, or approved equal, for beehive catch basin manholes. f. NEENAH R-3290-A (Type A grate), or approved equal, for storm sewer catch basins within commercial driveway entrances. g. NEENAH R-1755 E, Water tight casting. h. NEENAH R-3501TB, or approved equal, for storm sewer catch basins within surmountable curb at residential driveway entrances. B. Cleanout and curb box protection: Ford Type A1 ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 3 2.05 VALVE BOX A. Risers: 1. Valve box riser to fit the Tyler No. 6850, 6855, 6860, or 6865 top section and drop lid, or approved equal. 2. Tyler No. 69 gate valve extension screw adjustable, or approved equal. 3. Cast iron valve adjusting rings are not allowed. 4. Conform to the requirements of Section 33 10 00. 2.06 GEOTEXTILE A. Woven filter fabric, 4-1/2 ounces for use in conjunction with HPDE rings. PART 3EXECUTION 3.01 GENERAL A. The necessary vertical alignment will be determined by the Engineer and generally as indicated on the schedule of adjustments. B. Where existing frame is within 0.10 feet of grade, no adjustment is to be made. C. Raise or lower the frame to match the street or gutter. D. Protect existing structures from damage. E. Prevent sand, concrete, or any other debris from entering the structures. F. HDPE rings to be used on all structures. G. Adjust all structures located in non bituminous surface areas to final design grade. H. Immediately following removal of existing casting and adjusting rings, cover structure opening with suitable steel plate to prevent foreign debris from entering structure. Secure plate to top slab or cone with Ram-Nek. I. For street rehabilitation projects, or if required by the Engineer, use parachute or approved equal to prevent debris from entering structures while active work is being done on or near an existing structure. J. Installation of Cast Iron Manhole Adjustment Rings shall be as directed by the Engineer. 3.02 PREPARATION A. Call utility owners to field mark their utility locations. B. Verify exact location of existing utilities. ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 4 3.03 ADJUST MANHOLE AND CATCH BASIN FRAME A. HDPE Adjusting Ring: 1. See Standard Detail Plate STR-23. 2. Remove all dirt, debris, dust, and other deleterious material from surface prior to placement of first ring. 3. Install adhesive for manhole adjusting rings as per the following: Location of Sealant Type of Sealant 3/4 inch by 3/4 inch open cell polyurethane Between casting and last ring: foam sealant and 1/2-inch bead of DOW 999 Between intermediate rings: ½ inch bead of DOW 999 3/4 inch by 3/4 inch open cell polyurethane Between cone/top slab and first ring: foam sealant and ½ inch bead of DOW 999 4. Sealant to be placed around entire circumference of each unit with no gaps. 5. Utilize a variety of thickness of flat units and sloping units to match the required grade and slope of the area at the location of the structure: a. Shims are not allowed. 6. Total Thickness of Rings Allowed: Minimum of 3 inches, maximum of 12 inches. 7. Wrap entire casting and ring system with geotextile. For structures with cone section, geotextile wrap to extend over a minimum length of 18 inches of the cone. B. New adjusting rings shall be used on all casting adjustments, regardless of whether casting is salvaged, existing, or new. C. Cast Iron Manhole Adjusting Ring: 1. Use of the adjustment ring shall be as directed by the Engineer. 2. 3. 1- 5/8 inch minimum to 2.0 inch maximum steel ring height. 4. Apply adhesive as recommended by the manufacture. 5. Only 1 steel ring allowed for adjustment from the initial lift of wear course grade to the final wear course grade. 3.04 ADJUST VALVE BOX A. Adjust box by screwing top section up or down. B. Prevent sand, chunks of concrete, or any other debris from entering the valve box: 1. Short sections inserted inside the existing top section are not allowed to perform adjustment, unless specified. C. Install approved sections as needed for extension by removing top section, installing additional extension, and re-installing top section. D. Patch road to match existing pavement section. ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 5 3.05 HYDRANT EXTENSIONS A. Remove upper section. B. C. Replace upper and lower rod assemblies with heavy-duty for extensions in excess of 18 inches. D. Replace the upper section. 3.06 SCHEDULE OF ADJUSTMENTS A. Manholes Outside of Street Areas: 1.Permanently adjust casting to design rim elevation at time of structure installation. B. Manholes Within Street Areas with Concrete Curb and Gutter (Final Wearing Course Paved the Same Year as the Initial Lift Wearing Course): 1. At time of structure installation, install casting directly upon top slab or cone section with Ram-Nek material. 2. Prior to street construction, remove casting from all new and existing manholes and cover structure opening with suitable steel plate. Secure plate to top slab or cone with Ram-Nek. 3. Following initial lift wearing course paving perform adjustment: a. Locate structure and expose. b. Remove steel plate. Permanently place HDPE rings on structure. Permanently place casting on top ring with adhesive. Wrap filter fabric over casting and rings. For structures with cone section, fabric shall extend a minimum of 18 inches down cone. c. Replace and compact gravel base material. Patch initial lift wearing course around structure: 1) Bituminous patch to be 6 feet by 6 feet, minimum. d. Top of casting to be 1/4 to 3/8 inch lower than the final wearing course grade, as measured with a 6 foot straight edge centered on the structure. e. Perform adjustment no more than 5 working days prior to placement of bituminous final wearing course, unless approved by Engineer. C. Manholes Within Street Areas with Concrete Curb and Gutter (Final Wearing Course Paved the Following Year or Later): 1. At time of structure installation, install casting directly upon top slab or cone section with Ram-Nek material. 2. Prior to street construction, remove casting from all new and existing manholes and cover structure opening with suitable steel plate. Secure plate to top slab or cone with Ram-Nek. 3. Following non-wearing course paving perform adjustment: a. Locate structure and expose. b. Remove steel plate. Permanently place HDPE rings on structure. Permanently place casting on top ring with adhesive. Wrap filter fabric over casting and rings. For structures with cone section, fabric shall extend a minimum of 18 inches down cone. c. Replace and compact gravel base material. Patch initial lift wearing course around structure: 1) Bituminous patch to be 6 feet by 6 feet, minimum. ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 6 d. Top of casting to be 1/4 to 3/8 inch lower than the initial lift wearing course grade, as measured with a 6 foot straight edge centered on the structure. e. Adjustment of all manholes must be completed within 15 working days after the start of placement of the initial lift wearing course. Adjustment will not be allowed prior to initial lift wearing course paving. 4. Prior to final wearing course paving (the following year or later), perform adjustment: a. Permanently adjust casting to final grade with steel adjusting ring. b. Top of casting to be 1/4 to 3/8 inch lower than the final wearing course grade, as measured with a 6 foot straight edge centered on the structure. c. Perform adjustment no more than 5 working days prior to placement of bituminous final wearing course, unless approved by Engineer. D.Street Catch Basins: 1. Within Concrete Curb and Gutter: a. At time of structure installation, place HDPE rings and casting on dry. b. Establish erosion control around structure per Section 01 57 13. Structure to be allowed to accept runoff during this condition. Basin grate shall not be covered with fabric or other impervious material. c. Immediately prior to concrete curb and gutter installation, remove erosion control and permanently adjust casting to proper grade. d. Pour concrete curb and gutter adjacent to structure, permanently setting casting into curb line. E. Valve Boxes Outside of Street Areas: 1. Permanently adjust box to design rim elevation at time of valve installation. F. Existing Valve Boxes Outside of Street Areas: 1. Permanently adjust box to design rim elevation prior to final restoration work. G. Valve Boxes Within Street Areas with Concrete Curb and Gutter (Final Wearing Course Paved the Same Year as the Initial Lift Wearing Course): 1. At time of valve installation, install box. 2. Prior to street construction, lower top section of box sufficiently to avoid damage during street base construction. 3. Perform adjustment following initial lift wearing course paving: a. Locate box and expose. b. Adjust box to final wearing course grade by raising of top section. c. If top section cannot be raised to proper grade, install valve box extension section. d. Replace and compact gravel base material. Patch initial lift wearing course around structure: 1) Bituminous patch to be 4 feet by 4 feet, minimum. e. Top of box to be 3/4 inch lower than the final wearing course grade, as measured with a 6 foot straight edge centered on the box. f. Perform adjustment no more than 5 working days prior to placement of bituminous final wearing course, unless approved by Engineer. H. Valve Boxes Within Street Areas with Concrete Curb and Gutter (Final Wearing Course Paved the Following Year or Later): ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 7 1. At time of valve installation, install box. 2. Prior to street construction, lower top section of box sufficiently to avoid damage during street base construction. 3. Perform adjustment following initial lift wearing course paving: a. Locate box and expose. b. Adjust box to initial lift wearing course grade by raising of top section. c. If top section cannot be raised to proper grade, install valve box extension section. d. Replace and compact gravel base material. Patch initial lift wearing course around structure: 1) Bituminous patch to be 4 feet by 4 feet, minimum. e. Top of box to be 3/4 inch lower than the initial lift wearing course grade, as measured with a 6 foot straight edge centered on the box. f.Adjustment of valve boxes must be completed within 15 working days after the start of placement of the bituminous initial lift wearing course. Adjustment will not be allowed prior to paving. 4. Prior to final wearing course paving (the following year or later), perform adjustment: a. Remove initial lift wearing course around valve box. Remove sufficient material to allow for compaction of the gravel base. b. Adjust box to final wearing course grade by raising of top section. c. If top section cannot be raised to proper grade, install valve box extension section. d. Replace and compact gravel base material. Patch initial lift wearing course around structure: 1) Bituminous patch to be 4 feet by 4 feet, minimum. e. Top of box to be 3/4 inch lower than the final wearing course grade, as measured with a 6 foot straight edge centered on the box. f. Perform adjustment no more than 5 working days prior to placement of bituminous final wearing course, unless approved by Engineer. 3.07 TRAFFIC CONTROL A. Place construction advisory signs, 36 inch by 36 inch, stating Proceed at Your Own Risklack letters on an orange field at all entrances to the Project prior to beginning final adjustment of structures within bituminous surfaced areas. B.Exposed edges of manhole castings and valve boxes raised prior to bituminous wear course paving shall be painted with C. Provide appropriate traffic control devices to protect the traveling public during all phases of the structure adjustmentwork. 3.08 FIELD QUALITY CONTROL A. For adjustments made within bituminous surfaced areas, any settlements of the bituminous surfacing below the rim of the adjustment structure will require removal and replacement of the bituminous surfacing at the expense of the Contractor. B. Secure manholes and structures immediately after completion or before suspension of operations at the end of working day with castings or suitable alternative device. ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 8 C. Adjust manhole and catch basin frames as described above. Thorough tamping of the material around manhole and catch basin frames is required. Where existing frame is within 0.10 feet of grade, no adjustment is to be made. In such cases the crown or gutter shall be either lowered or raised, as the case may be, to put the street and frame at the same grade. D. No shims of any material will be allowed. E. Adjust valve boxes as described above. Thorough tamping of the material around the valve box is required. All valve boxes shall be clean, straight, plumb, and keyable, allowing a 4 inch schedule 40 pipe to be placed and centered over the valves operating nut from the street surface. This alignment check will be performed on all valves after the final adjustment of the valve box and prior to placement of the bituminous wearing course. Supply the alignment tool (4 Inch Schedule 40 Pipe) and perform this test with the Owner'srepresentative. F. Settlements around structure adjustments that occur during the correction period and result in the casting being higher than the bituminous wearing course will be repaired in a manner . END OF SECTION ADJUST MISCELLANEOUS STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 05 17 - 9 This Page Left Blank Intentionally SECTION 33 05 28 CONDUIT FOR PRIVATE UTILITIES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Placement of PVC and ductile iron pipe conduits to be used at a later date by private utility contractors, developers, and the City of Cottage Grove. B. Related Sections: 1.Section 33 05 05 Trenching and Backfilling. 2.Section 33 12 12 -Water Services. 3. Section 33 31 14 - Sanitary Sewer Services. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Conduit Crossings based on the number of conduits per crossing: Measurement shall be per linear foot of crossing. For example, if a location is determined to require 3 conduits, the Contractor would be paid for the length of the crossing (not the total length of all 3 conduits) under the Bid Item for 3 conduits. Payment at the Unit Price will be considered compensation in full for the installation of the conduits as shown in the Drawings, including conduit, excavation, backfill, compaction, and steel fence posts, regardless of the number of conduits in the trench excavation: a. It should be noted that due to the estimation required for Drawing preparation, the quantities of private utility crossings actually constructed may vary significantly from those given in the Bid Form. b. The Engineer reserves the right to increase or decrease the conduit quantities with no change to the Contract Unit Price. No additional compensation will be considered or allowed for changes to the estimated quantities or for the deletion of any of these Bid Items in their entirety. c. For most crossings, the 4 Inch Diameter PVC conduit is of adequate size for the private utility companies to place their facilities. If a 6 inch conduit is required, measurement shall be identical to that for the 4 inch diameter conduits with payment made under a separate Bid Item for 6 Inch Conduit. 2. Irrigation Conduit Crossing: Measurement and Payment shall be made based on the linear foot of pipe installed, including 4 inch ductile iron pipe (conduit), trench, excavation, backfill, and steel fence posts markers. 3. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. CONDUIT FOR PRIVATE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 05 28 - 1 1.03 SEQUENCING AND SCHEDULING A. Install conduit (provided by contractor) after the public utilities are completed and after the street sub-grade and aggregate backfill work is complete and prior to the gravel base improvements. B. Bid Items are included in the Bid Form for crossings consisting of single or multiple conduits, based on estimates made at the time of Drawing preparation. C. At the pre-construction meeting, a final plan of proposed crossings will be presented to the Contractor based on the actual needs of each private utility company. Irrigation crossings will be provided by the Developer. The location of the plan. PART 2PRODUCTS 2.01 MATERIALS A. Conduit: 4 inch and 6 inch diameter PVC, Schedule 40 conforming to Section 33 31 14. B. Markers: Steel fence posts, 5 feet in length. C. Irrigation Conduit: 4 inch diameter ductile iron pipe conforming to Section 33 12 12. PART 3 EXECUTION 3.01 GENERAL A. Excavation and Backfill to conform to Section 33 05 05. 3.02 INSTALLATION A. Conduit Trenching: 1. In general, underground conduit shall be installed by trenching. 2. The location of each crossing will be staked by the Engineer at the time of construction to assist the Contractor in proper placement of conduits both horizontal and vertical locations. 3. Install conduit as shown on Standard Detail Plate STR-34. Mark ends of crossing locations with steel fence posts.One post required at each end of a crossing, regardless of number of conduits within that crossing. 4. Trenches for the crossings shall be backfilled and compacted to the same standards as the water and sewer utility trenches. 5. Excess excavated material shall be removed and disposed of off the Site. 6. Irrigation conduits shall be 4 inch, ductile iron pipe, installed 4 feet below the design street grade, and shall extend 4 feet beyond the back of curb on both sides of the street, or as directed by Engineer. 3.03 FIELD QUALITY CONTROL A. The Engineer reserves the right to reject any material or workmanship not in accordance with the Specifications either before or after installation. CONDUIT FOR PRIVATE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 05 28 - 2 B. After trenches are excavated and conduit is placed, the Engineer shall be notified so that an inspection may be made before backfilling. C. END OF SECTION CONDUIT FOR PRIVATE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 05 28 - 3 This Page Left Blank Intentionally SECTION 33 08 30 COMMISSIONING OF SANITARY SEWER UTILITIES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Testing of sanitary sewer pipe, manholes, fittings, and miscellaneous appurtenances. 1.02PRICE AND PAYMENT A.Measurement and Payment: 1.Televise Sanitary Sewer: Measurement will be based upon units of linear feet of pipe televised, regardless of size and type. Pipe will be measured from centerline of structure to centerline of structure. Payment will be compensation for pipe preparation, televising, providing televising report, and all other associated costs. 2. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. American Society of Testing and Materials (ASTM): 1. D3034 Specification for Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings. 2. F679 - Standard Specification for Poly (Vinyl Chloride) (PVC) Large Diameter Plastic Gravity Sewer Pipe and Fittings. 3. F1417 - Standard Test Method for Installation Acceptance of Plastic Gravity Sewer Lines using Low-Pressure Air. B. National Association of Sewer Service Companies (NASSCO): 1. PACP Pipeline Assessment Certification Program 1.04 SEQUENCING AND SCHEDULING A. Televise Sanitary Sewer: 1. Notify Engineer 48 hours in advance of the televising of all pipes. 2. Complete all required mandrel and air testing prior to televising. 3. Start televising no sooner than 30 days, but no later than 60 days after all utility, excavation, and street subgrade work is completed as part of this contract. 1.05 SUBMITTALS A. Televising Report: 1. Submit 1 copy of the Written Report and Video Report within 30 days of completion of televising. COMMISSIONING OF SANITARY SEWER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 08 30 - 1 2. Report Requirements: a. Each run shall consist of a starting and ending structure number and a zero reading on the counter at center of the starting structure. b. Examine each service wye by using the pan and tilt feature. c. Show location and length, and identify sags within the flowline of the pipe of 10-percent or greater, example 0.06 feet for an 8 inch diameter pipe. d. Location in change in pipe material to be noted. e. The video camera operator shall type into the video the station (distance), wye location on either the left or right side of the pipe, and any problems they notice while televising the sewer lines. f. Take a still photograph at any questionable joint or possible defect. 3. Provide a Written Report with a graphic cross section of the pipe showing the manholes, all wye connections, and defects. This report shall include PACP codes and descriptions 4. Submit a Video Report in a DVD format with audio, including a printable version of the Written Report and full video of all televised pipe runs. PART 2 PRODUCTS Not Used. PART 3 EXECUTION 3.01 EXAMINATION A. Perform televising pipeline inspections in accordance with NASSCO Pipeline Assessment and Certification Program (PACP). When requested provide the require certification for personnel preforming the actual work. B. Commence test procedures only when pipe and structures are clean and free of dirt, water, or other foreign matter. Pipe cleaning shall be performed in accordance with NASSCO Jetter Code of Practice. 3.02 FIELD QUALITY CONTROL A. Engineer will observe all tests and visually inspect the Work for compliance. B. Provide all material, equipment, and labor required to test the sanitary sewer systems. C. Lamping: Engineer will verify installation for true line and grade, joints are home, no broken or deflective pipes exist, the installed pipe is structurally sound, and that the structures conform to the specified requirements. D. Gravity Pipe Leak Testing: 1. General: a. Test all systems (pipe and structures) for leakage before being put in service. Notify Engineer of the date and time for each test 1 day prior to actual testing. 2. Low Pressure Air Test: a. Diameter: Less than or equal to 24 inches. b. Must meet criteria set forth in ASTM F1417. COMMISSIONING OF SANITARY SEWER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 08 30 - 2 c. Pipe shall be cleaned but may be wetted. Pneumatic balls shall be used to plug the ends at manholes. Low-pressure air shall be introduced into plugged line until the internal air pressure reaches 4.0 psig greater than the average back pressure of any groundwater pressure that may submerge the pipe. At least 2 minutes shall be allowed for the pressure to stabilize before readings are taken and the timing started. During this time, check all plugs with soap solution to detect plug leakage. If any plugs are found to leak, air shall be bled off, the plugs shall be retightened, and the air shall be reintroduced into the line. d. The sewer line under test will be accepted as having passed the air test if the pressure does not drop more than 0.6 psig in less time than 1/2 minute per inch in diameter of the pipe being tested. The minimum starting pressure is 3.6 psig. e. Requirement may be waived for reconstruction projects where reconnection of active sewer services prevents testingwith permission from Owner. E. Gravity Pipe Deflection Testing: 1. Required for all flexible pipe. 2. Deflection Testing Methods: a. Pipe Diameters Through 24 Inches: Pull mandrel through the pipe by hand (without aid of mechanical pulling devices). b. Pipe Diameters Greater Than 24 Inches Through 36 Inches: Deflections shall be determined by use of a mandrel or a method submitted to and approved by the Engineer. If mandrel is used, it shall be pulled through the pipe by hand (without aid of mechanical pulling devices). c. Pipe Diameters Greater Than 36 Inches: Deflection measurements shall be determined using a mandrel, rigid bar, a circular rigid template, or by a method approved by the Engineer. If mandrel is used, it shall be pulled through the pipe by hand (without aid of mechanical pulling devices). 3. Deflection testing shall be conducted at least 30 days after the pipe has been backfilled to the desired finish grade on all direct bury flexible pipe and shall be done in the presence of the Engineer. 4. 5-percent deflection allowance. 5. Mandrel Diameter Requirements: a. Diameter equal to 95 percent of the base inside diameter noted in Appendix XI of ASTM C3034 for PSM PVC pipe (SDR pipe) and calculated from Appendix X2 of ASTM F679 for PS 46 or 115 pipe. b. Mandrel shall be constructed of rigid steel, be non-adjustable, and have an odd number of legs (9 legs minimum). Its effective length shall not be less than its nominal diameter. 6. Deflection Template/Bar Requirements: a. The circular template diameter (or rigid bar length) shall be equal to the mandrel diameter requirements as determined above. b. Circular templates shall be constructed of rigid materials and be non-adjustable. c. Rigid bars shall have a 1 inch diameter circular section, be constructed of steel, and be non-adjustable. 3.03 REQUIREMENTS FOR TEST FAILURES A. Leak Test Failure: 1. Repair piping as necessary to conform to product requirements. COMMISSIONING OF SANITARY SEWER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 08 30 - 3 2. All repair work shall be subject to approval by the Engineer. 3. Chemical type sealants added to the test water will not be permitted. 4. The Engineer may require removal and replacement of pipe in failed test sections. 5. Pay for the cost of replacement, repair, and re-testing of failed pipe sections. B. Deflection Test Failure: 1. Owner reserves the right to measure the deflection of all flexible pipe at any time during the correction period. Deflections greater than 5 percent of the inside diameter of the pipe shall be considered failure. Re-excavate the trench, re-compact the backfill material, and restore the surface with no additional compensation for such work. Re-rounding of pipes that fail the deflection test will not be allowed. 2. Damaged pipe shall not be reinstalled, but shall be removed from the Site. 3.04SANITARY SEWER CLOSED CIRCUIT TELEVISION INSPECTION A. Pre-Televising: 1. Newly installed sanitary sewer segments must be in a clean and ready condition prior to the television inspection. 2. Immediately clean any lines found to be dirty prior to televising. Costs for all such cleaning shall be the responsibility of the Contractor. 3. Provide sufficient water to run through the new sanitary sewer system prior to televising lines to be able to distinguish any sags or alignment problems with the pipe. 4. Personnel completing televising must be PACP certified. 5. Final acceptance of the video report will require the pipe to be clean as a new pipe. B. General: 1. Provide a camera that will be self-propelled and will have the ability to tilt up and down and pan left and right. The camera must provide color images. 2. Speed shall not exceed 30 feet per minute. C. Defects: 1. Immediately correct any defects, faulty joints, cracked pipe, or other deficiency noted by the television inspection. 2.A plan for repair shall be presented to and approved by the Owner and Engineer prior to the repair occurring. 3. Re-televise all corrected pipe runs after correction. 4. Any costs associated with correction and re-televising of the sewer system will be paid by the Contractor. END OF SECTION COMMISSIONING OF SANITARY SEWER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 08 30 - 4 SECTION 33 10 00 WATER UTILITIES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Water main pipe, hydrants, valves, fittings, and miscellaneous appurtenances. B.Related Sections: 1. Section 01 33 00 - Submittal Procedures. 2.Section 01 50 00 -Temporary Facilities and Controls. 3.Section 33 05 05 -Trenching and Backfilling. 4. Section 33 05 17 - Adjust Miscellaneous Structures. 5. Section 33 12 12 - Water Services. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Water Main Pipe: Measurement will be based upon units of linear feet for each size and type of pipe installed, as measured along the axis of pipe, without regard to intervening valves or fittings. Water main over depth shall not be measured. Payment at the Bid Unit Price shall include furnishing and installing pipe complete in place as specified: a. All required poly encasement on water main system shall be considered part of the Bid Item for the installation of the various components of the system. No separate measurement or payment for poly encasement shall be made. 2. Valve and Box: Measurement will be based on each size and type of Valve and Box installed. Payment at the Unit Price shall include furnishing and installing the Valve and Box, and valve adaptor complete in place as specified 3. Hydrant: Measurement will be based on units of each Hydrant installed. Payment at the Unit Price shall include furnishing and installing the Hydrant, including hydrant flag, as well as furnishing and delivering the extra flag and one to the Owner: a. A separate Bid Item will be provided for hydrants requiring vertical bends per Standard Detail Plate WAT-2. Payment will include cost of the hydrant described above and bend. 4. DIP Fittings: Measurement shall be based on the total fitting weight installed, not including accessories, as shown in AWWA C153/A21.53, latest revision (provide weights from supplier for crosses). Payment at the Unit Price shall include all costs related to furnishing and installing the DIP fitting, all hardware and accessories, and required labor. Any provisions, such as corporations, rods, copper pipe, Megalugs, etc. installed on the plugs of the stub for testing purposes or for future irrigation or service connections, shall be considered incidental to the plug. No separate measurement or compensation shall be made for such provisions: a. Fittings required for construction of future irrigation services will be paid under this Bid Item. b. Removal of the copper after successful testing will be incidental to this Bid Item. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 1 TEES, CROSSES, & REDUCERS MJ X MJ FITTING MJ X MJ FITTING RUN BRANCH RUN BRANCH SIZE SIZE TEE CROSS REDUCER SIZE SIZE TEE CROSS REDUCER 4 4 32 40 18 18 435 657 6 4 46 62 24 20 6 315 6 6 56 75 20 8 345 440 8 4 60 84 32 20 10 370 220 8 6 72 98 36 20 12 395 558 205 8 8 86 105 20 14 440 200 10 4 78 98 46 20 16 465 200 10 6 90 121 47 20 18 505 558 225 10 8 15 135 50 20 20 535 698 10 10 120 145 24 6 415 798 12 4 94 119 58 24 8 445 500 12 6 110 138 58 24 10 470 12 8 125 149 57 24 12 500 620 305 12 10 140 187 61 24 14 550 310 12 12 160 213 24 16 580 720 320 14 4 172 24 18 625 868 305 14 6 182 210 100 24 20 660 1014 300 14 8 206 231 100 24 24 720 1038 14 10 228 255 100 30 6 700 14 12 234 269 100 30 8 739 14 14 280 299 30 12 739 16 6 228 250 124 30 16 959 475 16 8 248 264 124 30 18 975 495 16 10 264 286 124 30 20 995 525 16 12 280 312 112 30 24 1160 478 1614316140303013231840 16 16 322 385 36 12 1103 18 6 275 36 16 1350 789 18 8 295 190 36 18 970 18 10 315 195 36 24 1498 770 18 12 335 437 180 36 30 1555 838 18 14 380 190 36 36 1910 2655 18 16 405 195 WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 2 BENDS, CAPS, PLUGS, & SLEEVES BENDS - MJ X MJ (DEGREES) CAPS PLUGS SLEEVES SIZE 90 45 22.5 11.25 MJ X MJ MJ X MJ MJ X MJ 3 19 16 15 14 8 8 18 4 25 22 18 16 9 10 20 6 39 32 31 30 15 16 33 8 57 46 46 42 22 26 46 10 89 70 64 58 32 36 62 12 108 86 80 67 42 46 76 14 210 160 136 93 66 75 140 16 264 202 172 148 92 95 170 18335250255205114121200 20 400 305 310 245 125 135 255 24 565 405 412 315 166 175 335 30 930 780 665 600 355 36 1450 1135 960 820 688 NOTE: SLEEVE WEIGHTS BASED ON THE USE OF LONG SLEEVES 5. Connect to Existing Water Main: Measurement will be based on each connection made, according to size. Payment of this Bid Item shall be considered complete compensation for all work associated with the connection to the existing water main, including removal and disposal of the existing plug. 6. Wet Tap: Measurement shall be based on each Wet Tap installed by size. Payment at the Bid Unit Price shall include stainless steel tapping sleeve and hardware, valve, and valve box. 7. Water Main Offset: Measurement shall be based on each offset made, according to size. Payment shall include all pipe, fittings, restraints, and materials to complete the offset per the Standard Detail Plate WAT-7. 8. Insulation: Measurement will be based on square yards of Insulation at the specified thickness. Payment shall be made at the Unit Price and will include furnishing and installation of the Insulation. 9. Cut In Valve: Measurement will be based on the number of valves installed, according to size. Payment shall include all water main cutting, removal, pumping, water main pipe, sleeves, fittings, and valve and box needed to complete the installation. 10. Irrigation Service: Measurement and Payment will be made under each Bid Item to construct in accordance with the Detail Drawing. 11. Hydrant Reconditioning and Painting: Measurement and payment will be based on units of each Hydrant that is reconditioned and painted and shall include sandblasting, primer coat, top coat, protection, materials, and all work associated with the reconditioning and painting: 12. Furnishing and installing a new hydrant flag, and salvaging and delivering the existing flag to the City of Cottage Grove Public Works Department will be considered incidental. 13. Remove and Replace Valve and Box: Measurement will be per each of size and type specified and will include all costs related to removing the existing valve and valve box per Section 02 41 13 and furnishing and installing a new valve, fittings, and valve box. 14. Joint Restraint: No Bid Item has been provided. Joint restraint shall be considered incidental to water main installation with no direct payment made. 15. All required testing shall be considered incidental to the installation of the water main system. No direct or separate payment for testing will be made. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 3 16. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. American Water Works Association (AWWA): 1. C104 - American National Standard for Cement Mortar Lining for Ductile-Iron Pipe and Fittings for Water. 2. C105 - American National Standard for Polyethylene Encasement for Ductile-Iron Pipe Systems. 3. C111 - American National Standard for Rubber Gasket Joints for Ductile Iron Pressure Pipe and Fittings. 4.C116 -American National Standard for Protective Fusion-Bonded Epoxy Coatings for the Interior and Exterior Surfaces of Ductile-Iron and Gray-Iron Fittings for Water Supply Service. 5. C151 - American National Standard for Ductile-Iron Pipe, Centrifugally Cast, for Water. 6. C153 - American National Standard for Ductile-Iron Compact Fittings for Water Service. 7. C502 - AWWA Standard for Dry-Barrel Fire Hydrants. 8. C504 - AWWA Standard for Rubber-Seated Butterfly Valves. 9. C515 - AWWA Standard for Resilient-Seated Gate Valves for Water Supply Service. 10. C550 - American National Standard for Protective Interior Coatings for Valves and Hydrants. 11. C600 - AWWA Standard for Installation of Ductile-Iron Water Main and Their Appurtenances. 12. C651 - AWWA Standard for Disinfecting Water Mains. B. American Society of Testing and Materials (ASTM): 1. A48 - Gray Iron Castings. 2. A126 - Gray Iron Castings for Valves, Flanges, and Pipe Fittings. 3. A536 - Standard Specification for Ductile Iron Castings. 4. A674 - Standard Practice for Polyethylene Encasement for Ductile Iron Pipe for Water or Other Liquids. 5. C578 - Specification for Rigid, Cellular Polystyrene Thermal Insulation. 1.04 SUBMITTALS A.Submit Product Data for the following items consistent with Section 013300: 1. Pipe, fittings, valves, and hydrants. 2. Joint restraint and corrosion resistant coatings. 1.05 SEQUENCING AND SCHEDULING A. Notify the Owner a minimum of 48 hours prior to performing Work.At this time, also notify the City Fire Department of the intended shutdown. B. Notify all customers connected to water system to be shut down 48 hours in advance of shut down. C. The Owner must open and close the existing valves for this part of the operation. The Owner is responsible for flushing the mains after the connection is completed; however, the Contractor shall assist the Owner as necessary. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 4 D. Successfully complete required test and inspections before restoration of surface. 1.06 USE OF CITY WATER SYSTEM A. Any water use for this project will need to be coordinated with the City of Cottage Grove Public Works and a water use permit will be required. Conform to Section 01 50 00. PART 2 PRODUCTS 2.01 DUCTILE IRON PIPE (DIP) AND FITTINGS A. General Requirement: AWWA C151/A21.51. B. Cement-mortar lining conforming to AWWA C104/A21.4. C.Class: As shown on Drawings. D. Fittings: AWWA C153/A21.53, latest revision, Ductile Iron Compact Fittings, 250-psi working pressure, AWWA C111/A21.11 latest revision, mechanical joint or push-on: 1. All fittings shall be fusion bonded epoxy coated per ANSI/AWWA C116/A21. E. Cor-Blue bolts required on all mechanical joint fittings. F. Wrap all pipe and fittings according to pipe encasement requirements. 2.02 HYDRANT A. General Requirements: AWWA Standard C502. B. Specified Hydrant: WB-67-250, or approved equal. C. Approved Manufacturer: Waterous Pacer, or approved equal. D. Two 2-1/2 inch hose connections, National Standard Thread. E. One 4-1/2 inch steamer, Nation Standard Thread. F. National standard operating nut. G. 5 inch valve opening. H. 6 inch mechanical joint pipe connection. I. Break-off flange with breakable rod coupling. J. 7 feet-6 inch cover. K. 16 inch high traffic section. L. Nozzle caps attached to hydrant with metal chains. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 5 M. Stainless steel hardware. N. Hydrant Flag: E-Z Guide Products, Hydrant Marker, or approved equal: 1. Non Corrosive Aluminum rod, 4 red reflective bands without a bulb end. 2. Minimum 60 inches long, 3/8 inch diameter. O. Hydrant Tag: RhinoMarkers ut of ag, or approved equal: 1. Size, fit around the steamer nozzle 2. Red color 3. P. Hydrants placed where the ground water table is less than 8 feet below the ground surface shall have the drain holes plugged and shall be equipped with a tag stating the need for pumping after use. Q.High-pressure valve seat (referred to as the Colorado Kit). R. Color: Painted Waterous Enamel No. V1814-R at the place of manufacture. 2.03 GATE VALVE AND BOX A. General Requirement: AWWA C515. B. Ductile iron body valves, bronze mounted. C. Non-rising stem (NRS), opening by turning counter clockwise, 2 inches square operating nut. D. O-ring seals. E. Mechanical joint ends conforming to AWWA C111/A21.11. F. Stainless steel hardware. G. All internal and external surfaces of the valve body and bonnet shall have a fusion bonded epoxy coating complying with ANSI/AWWA C550 and C116/A21.16. H. Wrap gate valves with pipe encasement. I. Valve Boxes: 1. 3-piece, ductile iron, screw-type. 2. Adjustable for 7-1/2 foot depth of cover. 3. Valve and box considered as integral units. 4. 5-1/4 inch diameter shafts. 5. 6. Valve Adaptor: Adaptor Inc., or approved equal. 2.04 BUTTERFLY VALVE AND BOX A. General Requirement: AWWA C504. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 6 B. Mechanical joint valve ends conforming to AWWA C111/A21.11. C. AWWA C504, Class 250B. D. O-ring seal. E. All stainless steel hardware required. F. Wrap butterfly valve with pipe encasement. G. Actuator: 1. Manually operated. 2.Traveling nut type sealed, gasketed, and lubricated for underground service. 3. Open counter clockwise with mechanical stops in the open and closed positions. H.Valve Box: 1. 3-piece, ductile iron, screw-type. 2. Valves and boxes to be considered integral units. 3. 5-1/4 inch diameter shafts. 4. Round or oval bases. 5. 6. Valve Adaptor: Adaptor Inc., or approved equal. 2.05 CONDUCTIVITY STRAP A. As specified by the pipe manufacturer. 2.06 WET TAP A. Stainless steel tapping sleeve. B. 3/4 inch gaskets. 2.07 JOINT RESTRAINT A. B. Mechanical Joint Restraint: 1. Ductile iron conforming to ASTM A536. 2. Working Pressure: Minimum 250 psi. 3. EBAA Iron,Inc. Mega-lug, Star Pipe Products Stargrip, Sigma OneLock, or approved equal. 4. Casting body and wedge assemblies coating: a. Fusion bonded epoxy per ANSI/AWWA C116/A2. b. 1) Mega-Bond, Star-Bond, or approved equal. 2.08 PIPE ENCASEMENT A. Material: Polyethylene film conforming to AWWA C105/A21.5 and ASTM A674, tube form. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 7 B. Color: Black. C. Film Marking Requirements: Conform to AWWA C105/A21.5 and ASTM A674, including AWWA/ASTM standard, corrosion protection warning and applicable range of nominal pipe diameter size(s) every 2 feet along its length. 2.09 INSULATION A. Polystyrene Insulation: Extruded type conforming to ASTM C578, Type VI, VII, or V. 2.10 CORPORATION STOP A.Conform to the requirements of Section 33 12 12. 2.11 COPPER SERVICE PIPE A. Conform to the requirements of Section 33 12 12. 2.12 HYDRANT RECONDITIONING AND PAINTING A. Materials shall conform to the following: 1. Primer: Apply Devoe High Performance Coating, Devran201H Epoxy Primer. 2. Devoe High Performance Coating, Devthane 379 Polyurethane. a. Color: Safety Red b. Finish: Glossy Enamel 3. Proposed paint material substitution for consideration as an approved equal shall be submitted in writing to the Engineer for review and consideration. Otherwise, furnish materials exactly as specified. PART 3 EXECUTION 3.01PREPARATION A. Conform to the requirements of Section 33 05 05. 3.02 INSTALLATION OF PIPE A. shown on the Drawings. B. Permanently support, remove, relocate, or reconstruct existing utility pipes, cables, structures, or other appurtenances when they obstruct the line, grade, or location of the pipe or appurtenance. C. At the time of the connection to the existing water main, the Contractor must notify the Engineer if they are experiencing any existing water main leakage. D. Remove foreign matter or dirt from the inside of pipe to insure each pipe is clean before it is installed. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 8 E. All jointing of mechanical joint pipe and push-on joint pipe in accordance to AWWA C600. 1. Mechanical joint restraints and retainer glands are not allowed on existing cast iron pipe. F. Outside of the spigot and the inside of the bell, wire brush, wipe clean and dry. Keep pipe ends clean until joints are made. G. Lay and maintain pipe and appurtenances to the alignment, grade, and location shown on the Drawings. No deviation from the Drawing alignment, grade, or location is allowed, unless approved by the Engineer. No pipe shall be laid in water or when the trench conditions are unsuitable for such Work. H. Provide conductivity throughout the water system. Use of conductivity straps between pipe segments is required at all valve and fitting locations. I. Cap or plug end of each pipe until next pipe is ready to be laid to prevent debris or groundwater from entering the pipe. J. Installing Fittings: 1. General Requirements: AWWA C600. 2. Set and jointing to existing pipe and fittings as specified for cleaning, laying, and joining pipe. K. Dead End Lines: 1. Install plug tapped with a 1 inch corporation at all stubs. 2. Extend a temporary section of 1 inch copper to above grade for flushing and testing. 3. Install a temporary curb stop on the 1 inch copper bleed off above ground. 4. Mark with wood marker per Standard Detail Plate WAT-8. L. Wrap all ductile iron pipe and fittings with pipe encasement. M. Backfilling: Conform to Section 33 05 05. 3.03 INSTALLATION OF HYDRANT A. Location determined by Engineer. A grade stake and location stake will be provided by the Engineer before the hydrant may be set. B. Set on 8 inch concrete block, or approved equal concrete base. C. Brace according to Drawings. D. After each hydrant has been set, place around the base of the hydrant not less than 1 cubic yard of coarse filter aggregate (MnDOT Spec. 3149.2.H). Carefully place 2 layers of polyethylene, minimum 4 mm thickness each, over the rock to prevent backfill material from entering voids in the drain rock. E. Wrap the hydrant assembly with pipe encasement to the bottom of the break off flange. F. Maintain hydrants in a plumb position during the backfilling operation. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 9 G. Attach a hydrant marker to the hydrant using an existing flange bolt located at the back of the hydrant. H. Furnish 1 additional marker for each hydrant to the Owner. I. Furnish and install a Hydrant tag on all Hydrants until the lines have been tested and accepted. Once accepted, the Contractor shall deliver the hydrant tags to the City Public Works Department. 3.04 INSTALLATION OF VALVE A. Set and joint valves to new pipe in the manner as specified for cleaning, laying, and jointing pipe. Location to be determined by the Engineer. B. Valves and boxes shall be supported on an 8 inch concrete block, and encased with coarse filter aggregate(MnDOT Spec. 3149.2.H) as shown on the Drawings. C. Install valve adaptor. D. Maintain valve box centered and plumb over the operating nut of the valve. E. Set top of valve box flush with the existing surface to provide 12 inches of upward adjustment. F. Wrap valves with pipe encasement. Conform to AWWA C105. 3.05 ANCHORAGE A. Restrain all hydrant leads, lateral lines, bends, fittings, and valves using Megalug glands as per Drawings. B. Provide concrete thrust blocking for all bends, tees, hydrants, and plugs: 1. Requirements per Drawings. 2. Block tees, plugs, and hydrants to same requirements as 90 degree bend. 3. Thrust blocking for 4 inch, 6 inch, and 8 inch fittings shall be precast concrete blocking. 4. Thrust blocking must be poured-in-place concrete for fittings 12inch and larger. 5. Wrap plug in poly prior to pouring of thrust block in anticipation of future removal. C. Brace fittings and hydrants securely against undisturbed soil using precast concrete blocks. Rod all joints from main line tee to hydrant gate valve, then from hydrant gate valve to hydrant. D. Where lines terminate with plugs, restrain the plug and a minimum of the next 3 joints for 6 and 8 inch pipe with 3/4 inch tie rods in conjunction with blocking, as directed by the Engineer. The The number of rods required is as follows: Pipe Size No. of 3/4 inch Rods 6 inch 2 8 inch 2 12 inch 4 16 inch 6 18 inch 6 WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 10 20 inch 8 24 inch 10 Joint restraints other than rods shall be as approved by the Engineer. 3.06 INSULATION A. Review insulation installation with Engineer: 1. Place insulation between water pipe and sanitary pipe when water main or service is within 1 foot above or below the sanitary pipe. 2. Place insulation between storm sewer pipe and water main or water service when pipes are separated by less than 2 feet. 3.07INSTALLATION OF IRRIGATION SERVICE A. Install at locations shown on the Drawings and as directed by Engineer. B. Install per Standard Detail Plate SER-6. 3.08 PIPE CONFLICTS (WATER MAIN OFFSET) A. Install water main offset per Standard Detail Plate WAT-7 and as shown on Drawings. B. All offset piping shall be DIP. C. Megalug and Tie Rod type joint restraints. 3.09 HYDRANT RECONDITIONING AND PAINTING A. Project Coordination: 1. Conduct pre-construction meeting with Engineer to review Work schedules for all stages of Work, review material application process and discuss any questions before work begins. 2. Provide written documentation of primer and paint material used for Project. B. Preparation: 1. Salvage flag and deliver to Cottage Grove Public Works Department. 2. Sandblast the entire fire hydrant to base metal to ensure good adhesive bonding of the paint. 3. Produce smooth surface re recommendations. 4. During painting and blasting operations, provide adequate protection and containment to prevent damage to adjacent structures and property. This includes protecting the area surrounding the hydrant from overspray through the use of a template or ground covering around the hydrant. The contractor is responsible for any and all damage resulting from painting and/or blasting operations. Remedy all damages within 48 hours of notification. C. Coatings: 1. Primer and Top Coat shall be applied to the hydrant by using a spray method application. The use of painting mitts is not allowed on any surface. 2. instructions at a rate to provide a uniform dry film thickness of 2.0 to 3.0 mils. Care must be WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 11 taken to ensure uniform application of material around bolt heads, underside of nozzles, and other surface irregularities. Paint films that show sags, blisters, etc. will not be accepted. 3. Prior to Top Coat application, primed surface must be clean, dry, undamaged, and free of all contaminants including salt deposits. 4. Top Coats: Apply to coat uniform dry film thickness of 2.0 to 3.0 mils. Maintain minimum coverage around bolt heads, underside of nozzles, and other surface irregularities. 5. Produce glossy, smooth, and uniform surface finish. 6. Follow product data/application instructions and manuf completing the work. D. Process: follow all requirements for working in public right-of-way, and maintain full compliance with specified traffic control and applicable OSHA Standards. Removeall Primer and Paint Top Coat material that is over-sprayed, dripped, spilled or deposited on sidewalks or other ground E. Furnish and install new flag after hydrant has been painted. 3.10 REMOVE AND REPLACE VALVE AND BOX A. Coordinate the necessary water main shut down with City Public Works and Resident notification. B. Excavate and remove existing valve. C. Install new valve include necessary sleeve. D. Backfill and compact trench per Section 33 05 05. 3.11 PROTECTION A. Existing valves and hydrants shall be operated in accordance with Section 01 50 00, Paragraph 3.02, unless under emergency situations. B. Securely plug all water main openings promptly before suspension of Work at any time to prevent earth or other substances from entering the water main. C. Mark valve boxes and structures susceptible to being hit by construction or vehicular traffic. D. All newly installed core blue nuts and bolts that are marred or scratch during installation, shall have an Asphalt Aerosol Spray applied to the surface. 3.12 FIELD QUALITY CONTROL A. Scope: 1. Perform hydrostatic pressure, disinfection, and conductivity tests. 2. The Engineer will observe and verify all tests and visually inspect final Work for compliance. B. Hydrostatic Pressure Test: 1. Minimum Test Pressure: 150 psi. WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 12 2. Test Duration: 2 hours. 3. Criteria: No drop in pressure allowed. 4. Testing Gauge: Liquid filled, 4-1/2 inches diameter, labeled in 1-psi increments, such as Ashcroft Model 1082, or approved equal. 5. Test all lines, including hydrant leads, water services, and stubs. 6. Any valved section of water system may be isolated for pressure testing. 7. Sequence and sectioning of water system for pressure testing shall be proposed by Contractor and approved by the Engineer prior to testing. 8. Notify the Engineer immediately if it is determined that the existing valve is not holding pressure during the hydrostatic pressure test. 9. The Contractor may request the City to perform leak detection testing on existing valves if the Contractor has tried testing the line and the required testing pressure will not hold. If the valve is found not to be leaking, the Contractor will be responsible for the testing costs. 10. If a faulty valve is suspected, a meeting with the Engineer and Owner will be necessary to attempt pressure testing prior to the Contractor continuing. No claims by the Contractor for extra work related to pressure testing will be processed if this meeting has not occurred. C. Disinfection: 1. General Requirement: AWWA C651 Disinfecting Water Mains (Tablet Method). 2. Place hypochlorite tablets in each section of pipe and all appurtenances: a. Attach tablets to top of pipe with a food grade adhesive, such as denture grip. b. The estimated number of tablets required per 20 foot length of pipe based on 3-1/4 grain available chlorine per tablet is as follows: Diameter No. of Tablets 1) 4 Inches 1 2) 6 Inches 2 3) 8 Inches 3 4) 10 Inches 4 5) 12 Inches 5 6) 16 Inches 9 7) 18 Inches 12 8) 20 Inches 14 9) 24 Inches 20 10) 30 Inches 28 c. Use specified number of tablets to disinfect water main for 24 hours with at least 50 ppm available chlorine, with a residual of at least 10 ppm throughout the length of the main at the end of the 24 hour period. 3. Fill main with water at a velocity of less than 1 foot per second if tablet method is used. 4. Begin flushing after the chlorinated water has been allowed to disinfect the new pipe for 24 hours. 5. 1 bacteria test location is required for every 1,200 feet of water main installed, with a minimum of 2 sample locations per Project. Locations shall be identified by the Engineer. Two bacteria test samples will be taken at each location with a minimum 24 hour separation of the sampling. The first test shall occur no sooner than 24 hours after flushing has been completed. 6. Coordinate all bacteria testing with Engineer. Assist with the sampling process by operating valves if necessary at the time of testing. Engineer will coordinate with a City approved and WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 13 certified independent testing firm to complete the sampling and testing. Results will be provided to contractor as soon as available. 7. The owner will be responsible for costs associated with bacteria testing of samples obtained. Contractor is responsible for costs associated with bacteria testing of any failing tests. 8. Water mains needing reflushing or to be rechlorinated, must be done to meet Department of Health and AWWA requirements. Perform re-flushing or re-chlorination within 48 hours of notification of failing tests. D. Conductivity (DIP): 1. Conductivity to be provided throughout the water system by use of copper straps or approved conductive gaskets with copper inserts. 2. Test Current: 350 amps at approximately 30 volts for 4 minutes, then 400 amps for 1 minute without fluctuation. 3. Fill lines with water prior to test. 4. Test all lines, including hydrant leads, water services, and stubs. E. Trench Backfill Compaction: The Owner shall have an independent testing laboratory perform, as a minimum, the following tests. The location of the tests will be determined by the Engineer: 1. 1 density test for every 300 feet of trench at varying depths. F. Adjust valve boxes per Section 33 05 17. Thorough tamping of the material around the valve box is required. All valve boxes shall be clean, straight, plumb, and keyable, allowing a 4 inch schedule 40 PVC pipe to be placed and centered over the valves operating nut from the street surface. This alignment check will be performed on all valves after the final adjustment of the valve box and prior to placement of the bituminous wearing course. Supply the alignment tool (4 Inch Schedule 40 PVC Pipe) and perform this test with the Owner's representative. END OF SECTION WATER UTILITIES © 2021 City of Cottage Grove, Minnesota 33 10 00 - 14 SECTION 33 12 12 WATER SERVICES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Construction of water service pipe, corporation stops, curb stops and boxes, and all appurtenances. B. Related Sections: 1.Section 013300-Submittal Procedures. 2.Section 33 05 05 -Trenching and Backfilling. 3. Section 33 10 00 - Water Utilities. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Water Service Line: Measurement by linear foot of each size and type of pipe measured along the axis of the pipe, from centerline of the water main to termination as shown on the Drawings with no regard to intervening fittings. Payment at the Bid Unit Price per foot shall include cost of all pipe, laying, excavation, poly encasement for ductile iron pipe, backfilling, and testing: a. Placement and compaction of the aggregate material around the corporation stop and gooseneck is incidental to the service line. b. Supplying and installing required markers is incidental to the service line. c. Ductile iron fittings will be paid per Section 33 10 00. d. Any provisions, such as corporations, rods, copper pipe,etc. installed on the plugs of a stub for testing purposes or for future service connections, shall be considered incidental to the plug. 2.Corporation Stop: By physical count of each type installed, according to size: a. Placement and compaction of the required support is incidental. 3. Curb Stop: By physical count of each type installed, according to size: a. Required support is incidental. 4. Gate Valve and Box will be paid per Section 33 10 00. 5. Material, placement, compaction, and removal of excess trench material to be included in the Bid Unit Price for Water Service Line. 6. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. American Society of Testing and Materials (ASTM): 1. B88 - Class K Copper Water Service Pipe. WATER SERVICES © 2021 City of Cottage Grove, Minnesota 33 12 12 - 1 1.04 SUBMITTALS A. Submit the Product Data for the following items consistent with Section 01 33 00: 1. Pipe and fittings. 2. Corporation stop and curb boxes. 1.05 SEQUENCING AND SCHEDULING A. Install sanitary sewer, water main, and all pipe deeper than the services prior to the installation of the services. B. Install water service in same trench as the sanitary sewer service, wherever possible. C. Perform testing of new water main prior to reconnecting existing services. PART 2PRODUCTS 2.01 SERVICE PIPE A. Copper Water Tube: 1 inch through 1-1/2 inches for buried service shall be seamless, Type K water tube conforming to ASTM B88: 1. Fittings shall be designed for working pressures up to 150 psi. Fittings used in service lines shall be designed for connection to the service line by threads, brazing, and/or flaring (compression fittings not allowed). 2. 4 Inch diameter (minimum) DIP shall be used for services larger than 1-1/2 inches Ductile Iron Pipe (DIP): Conform to Section 33 10 00. 2.02 CORPORATION STOP A. Approved Manufacturers: Mueller Minneapolis Pattern H-15000, Ford Type 600, Hayes No. 5200, or McDonald No. 74701. B. Threaded on outlet for flared connection with copper service pipe. C. Threaded on inlet end with standard tapered corporation cock thread. 2.03 CURB STOP A. Approved Manufacturers: 1. Curb Stops - 1 Inch: Mueller Oriseal, Minneapolis Pattern H-15151, Ford No. B22, Hayes No. 5155 or McDonald No. 76104. 2. Curb Stops - 1-1/2 Inches: Mueller Oriseal H-15154, Minneapolis pattern, Ford No. B22 Series ball valves, Hayes Nuseal No. 4008 or McDonald No. 76104 ball valves. B. Same size and connection type for inlet and outlet. C. Full opening through the valve body with no smaller restriction allowed. WATER SERVICES © 2021 City of Cottage Grove, Minnesota 33 12 12 - 2 2.04 CURB BOX A. Approved Manufacturers: 1. Mueller H-10300. 2. McDonald5615 B. Adjustable in height from seven feet to eight feet. C. Stationary rods. D. 1-1/4 inch upper section. E. Mueller, Minneapolis pattern base. 2.05SADDLE A. Smith Blair stainless steel strap 317 or approved equal. B. Saddles are to be used at locations shown on the drawings unless otherwise approved by the Engineer. 2.06 GATE VALVE AND BOX A. Conform to the requirements of Section 33 10 00. 2.07 DIP FITTINGS A. Conform to the requirements of Section 33 10 00. PART 3 EXECUTION 3.01 INSTALLATION A.Install in accordance with Standard Detail Plate SER-1 shown on Drawings. B. Governing Code: Minnesota Plumbing Code and any local ordinances that may apply. C. Preparation: Conform to Section 33 05 05. D. Locations of services to be staked by Engineer during construction. E. Copper Water Service Line: 1. Parallel and upstream, 3 to 5 feet, of the sewer service line in the same trench. 2. Minimum 7.5 feet of cover from finished grade. F. Corporation Stop: 1. Tap into main only when water main is under pressure. 2. Use 2 layers of pipe tread sealant tape on corporations as a thread lubricant and sealant, or product approved by Owner. WATER SERVICES © 2021 City of Cottage Grove, Minnesota 33 12 12 - 3 3. Provide support for corporation and gooseneck per Standard Detail Plate SER-1. 4. 5. Operation must be with open wrench. G. Curb Stop: 1. Support on full size pre-cast segmental manhole block. 2. Provide support for curb stop per Standard Detail Plate SER-1. 3. Grade stakes will be furnished to establish elevations. 4. Operation must be with open wrench. H. DIP Water Service Line: 1. Minimum 7.5 feet of cover from finished grade. 2.Use mega-lugsandTie Rodsfrom tee at main to end of service. 3. Place a plug, tapped with 2 inch corporation stop, at the end of the water service. Attach copper to the corporation and extend to the surface to bleed off air and to perform pressure tests, conductivity tests, and other items. Review such provisions with the Engineer prior to construction. I. All trenches shall be backfilled and compacted in accordance to Section 33 05 05. 3.02 FIELD QUALITY CONTROL A. Do not backfill trench until the service has been inspected and approved by the Engineer. B. Pressure Testing:All water services will be pressure tested in conjunction with the water main, conforming to Section 33 10 00. C. The Owner shall have an independent testing laboratory perform, as a minimum, the following tests. The location of the tests shall be determined by the Engineer: 1. 1 density test for every 4 services installed at varying depths. D. R per detail Drawings, at the time of installation: 1.Measure and record the longitudinal distance from sanitary sewer wye to the water service line (perpendicular to the water service line) or from the sanitary sewer service line to the corporation stop/tee (perpendicular to the water service line). 2. Measure and record the longitudinal distance between the sanitary sewer plug and the water curb stop or plug (perpendicular to water line). 3. Measure and record the length of water line material for each service pipe installed. 3.03 PROTECTION A. Mark each curb stop and plug with: 1. Solid 4 inches by 4 inches by 8 feet wood post extending 4 feet above and 4 feet below grade. END OF SECTION WATER SERVICES © 2021 City of Cottage Grove, Minnesota 33 12 12 - 4 SECTION 33 31 00 SANITARY UTILITY SEWER PIPING PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Sanitary sewer gravity pipe, fittings, and miscellaneous appurtenances. B.Related Sections: 1. Section 01 33 00 - Submittal Procedures. 2.Section 01 57 13 -Temporary Erosion and Sediment Control. 3.Section 02 41 13 -Selective Site Demolition. 4. Section 33 05 05 - Trenching and Backfilling. 5. Section 33 08 30 - Commissioning of Sanitary Sewer Utilities. 6. Section 33 31 14 - Sanitary Sewer Services. 7. Section 33 39 00 - Sanitary Utility Sewer Structures. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Sanitary Sewer Pipe: Measurement will be based upon units of linear feet for each size, type, and class, furnished and installed complete in place as specified, regardless of depth. Including excavation, backfilling, and compaction. Pipe will be measured from centerline to centerline of manholes, or to the connection point of the existing pipe: a. PVC pipe bedding will be paid in accordance with Section 33 05 05. b. Improved pipe foundation material, if necessary, shall be per Section 33 05 05. c. Plugs on dead end lines will be considered incidental to the pipe. 2. Connect to Existing Manhole: Measurement shall be on the basis of each and shall be considered to include all excavation, labor, materials, and equipment necessary to make the required connection, including reconstructing bench/invert. 3. Connect to Existing Manhole (Core Drill): Measurement will be per each, regardless of the pipe size required. Payment will be compensation for excavating, core drilling the manhole and reconstructing bench/invert. 4. Connect to Existing Pipe: Measurement shall be on the basis of each, according to size, and shall be considered to include all excavation, labor, materials, and equipment necessary to make the required connection, including removal/salvaging of existing plug. 5. Wyes: Measurement will be per each, according to size and type. Payment at the Unit Price will be considered compensation in full for all work and costs to furnish and install the wye as specified: a. Cut-In Wye: Measurement shall be on the basis of each, according to size and type. Payment shall be considered compensation in full for all work, including excavation, backfilling, labor, materials, concrete encasement (or PVC saddle if approved), and equipment necessary to cut in the wye as specified. 6. Furnishing and installing plugs shall be considered incidental to the installation of the pipe. SANITARY UTILITY SEWER PIPING © 2021 City of Cottage Grove, Minnesota 33 31 00 - 1 7. Insulation: Measurement will be based on square yards of Insulation at the specified thickness. Payment will include furnishing and installation of the Insulation. 8. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. American Society of Testing and Materials (ASTM): 1. C578 - Specification for Rigid, Cellular Polystyrene Thermal Insulation. 2. C76 - Specification for Reinforced Concrete Culvert, Drain, and Sewer Pipe. 3. D1784 - Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (PVC) Compounds. 4.D3034 -Specification for Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings. 5. D3212 - Specification for Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric Seals. 6. F477 - Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe. 7. F679 - Specification for Poly (Vinyl Chloride) (PVC) Large-Diameter Plastic Gravity Sewer Pipe and Fittings. B. American Water Works Association (AWWA): 1. C105 - American National Standard for Polyethylene Encasement for Ductile-Iron Pipe Systems. 2. C111 - American National Standard for Rubber Gasket Joints for Ductile Iron Pressure Pipe and Fittings. 3. C116 - American National Standard for Protective Fusion-Bonded Epoxy Coatings for the Interior and Exterior Surfaces of Ductile-Iron and Gray-Iron Fittings for Water Supply Service. 4. C151 - American National Standard for Ductile-Iron Pipe, Centrifugally Cast, for Water. 5. C153 - American National Standard for Ductile-Iron Compact Fittings for Water Service. 6. C900 - Polyvinyl Chloride (PVC) Pressure Pipe and Fabricated Fittings, 4 Inches Through 12 Inches, For Water Distribution. 7. C905 - Polyvinyl Chloride (PVC) Pressure Pipe and Fabricated Fittings, 14 Inches Through 48 Inches, For Water Transmission and Distribution. 1.04 SITE CONDITIONS A. Sanitary sewer lines are shown on the Drawings in a general way.Anticipate minor variations in both horizontal and vertical directions in locating existing system. 1.05 SUBMITTALS A. Submit Product Data for the following items consistent with Section 01 33 00: 1. Pipe and fittings. 2. Transition couplings. SANITARY UTILITY SEWER PIPING © 2021 City of Cottage Grove, Minnesota 33 31 00 - 2 1.06 SEQUENCING AND SCHEDULING A. Do not pursue Work causing shut off of utility services (gas, water, electric, telephone, TV, etc.) to consumers until the utility owner is contacted and all consumers are notified of the shut-off schedule. B. Verify vertical and horizontal location of sanitary sewers sufficiently in advance of installing new pipe to determine the extent of conflict, if any. C. Successfully complete required inspections and testing before restoration of surface. PART 2PRODUCTS 2.01 SOLID WALL PVC PIPE A. PSM Poly (Vinyl Chloride) (PVC) Plastic Pipe and Fittings (4 Inch Through 15 Inch Diameter): 1. General: Pipe and fittings shall be made of compounds conforming to ASTM D1784 in accordance with the material requirements of ASTM D3034. 2. Design: Integral bell gasketed joint and a minimum wall thickness conforming to SDR 26 or 35 as shown on the Drawings. 3. Joints: Push-on type only with the bell-end grooved to receive a gasket. a. Elastomeric Seal (Gasket): A basic polymer of synthetic rubber conforming to ASTM F477. Natural rubber gaskets will not be accepted. 4. Marking: Each pipe shall be identified with the name of the manufacturer, or trademark and code, nominal pipe size in inches, the PVC cell classificati." B. Polyvinyl Chloride (PVC) Pipe and Fittings (18 Inch Through 48 Inch Diameter): 1. General: Pipe and fittings shall be made of compounds conforming to ASTM D1784 in accordance with the material requirements of ASTM F679. 2. Design: Integral bell gasketed joint with a minimum wall thickness conforming to PS 46 or PS 115 as shown on the Drawings. 3. Joints: Elastomeric gasket joints providing a water-tight seal conforming to ASTM F477. 4.Marking:Conform to ASTM F679. C. Polyvinyl Chloride (PVC) Pressure Pipe and Fittings: 1. General: Pipe shall be made of compounds conforming to ASTM D1784 in accordance with the material requirements of AWWA C900 (4 inch to 12 inchdiameter pipe) or AWWA C905 (14 inch to 48 inch diameter pipe). 2. Design: Cast-iron-pipe-equivalent outside diameter with a minimum pressure class (PC) or dimension ratio (DR) as shown on the Drawings. 3. Joints: Integral bell with elastomeric gasket joints providing a water-tight seal conforming to ASTM D3212 or ASTM F477. 4. Fittings: Conform to Ductile Iron Pipe (DIP) and Fittings under this Section. 5. Marking: Conform to AWWA C900 and C905 respectively. 2.02 DUCTILE IRON PIPE (DIP) AND FITTINGS A. General Requirement: Pipe to conform to AWWA C151/A21.51. SANITARY UTILITY SEWER PIPING © 2021 City of Cottage Grove, Minnesota 33 31 00 - 3 B. Pipe Class: As shown on Drawings. C. Fittings: AWWA C153/A21.53, Ductile Iron, 250-psi working pressure, AWWA C111/A21.11 latest revision, mechanical joint or push-on. 1. All fittings shall be fusion bonded epoxy coated per ANSI/AWWA C116/A21. D. Pipe and Fitting Lining:Protecto 401® Ceramic Epoxy (Ceramic Quartz Filled Amine Cured Novalac Epoxy), PVC Lined Ductile Iron or approved equal. E. Marking: Conform to AWWA C151/A21.51. 2.03 REINFORCED CONCRETE PIPE (RCP) A. General Requirement: Reinforced concrete pipe conforming to ASTM C76, Wall B with gasketed joint forming a water-tight seal conforming to ASTM C443. B. Pipe Class: As shown on the Drawings. C. Materials: Conform to the requirements of ASTM C76 Wall B with circular reinforcing. Profile gaskets shall be synthetic rubber, circular in cross-section, and conform to ASTM C1619 Class C. D. Pipe Joints: Bell and spigot conforming to MnDOT Plate 3006. E. Marking: Each pipe shall be identified with the name of the manufacturer identification of plant, date of manufacture, the pipe class, and specification design. 2.04 PIPE BEDDING A. Conform to Section 33 05 05. 2.05 INSULATION A. Polystyrene Insulation: Extruded type conforming to ASTM C578, Type VI, VII, or V. 2.06 DIP ENCASEMENT A. Material: Polyethylene film conforming to AWWA C105/A21.5 and ASTM A674, tube form. B. AWWA/ASTM standard, corrosion protection warning and applicable range of nominal pipe diameter size(s) every 2 feet along its length. 2.07 TRANSITION COUPLING A. Coupling consisting of an elastomeric sleeve with incorporating stainless steel tension bands, tightening mechanism, and less than 0.01 inch thick shear ring conforming to ASTM C1173, Type A. B. Separate bushings are not allowed without approval from the Engineer. SANITARY UTILITY SEWER PIPING © 2021 City of Cottage Grove, Minnesota 33 31 00 - 4 PART 3 EXECUTION 3.01 PREPARATION A. Excavation and Preparation of Trench: Conform to Section 33 05 05. B. By-Pass Pumping: Contractor is responsible for all items required to maintain sewer flows during construction of the new sanitary sewer line. All Work and costs for this are considered incidental to the Project, unless otherwise specified. C. Erosion control and dewatering in conformance with Section 01 57 13. 3.02PIPE INSTALLATION A.Trench Excavation and Backfill:Conform to Section 33 05 05. B. Lay and maintain pipe appurtenances to the alignment, grade, and location shown on the Drawings and/or staked in the field. No deviation from the Drawing and/or staked alignment, grade, or location is allowed, unless approved by Engineer. Deviation from grade in excess of 0.02 percent (with no intermediate high points, level sections, or reverse invert slope) may be cause for removal and relaying pipe at the Co C. Maintain reference line and grade with laser equipment or other equipment approved by the Engineer. Periodically check equipment for adjustment and accuracy. Correct deficiencies in equipment, reference line, and reference grade. Take precautions to prevent deflections in reference line and grade. D. Non-Conforming Pipe Installation: Remove and reinstall. E. Inspect pipe for defects and cracks while suspended immediately prior to installation. F. Install pipe from lower to higher invert elevation with uniform and smooth invert line. G. Install pipe length spigot ends pointing in the direction of flow. H. No pipe is to be laid in water or when trench conditions are unsuitable for such Work. I. Jointing: 1. In conformance with recommendations of manufacturers of pipe and joint material. 2. All joints must be watertight. 3. Hand fill and compact all bell depressions with granular bedding materials to prevent joints from sagging or movement. J. Cleaning and Protection: 1. Protection of the existing downstream system/pipe will be required. A temporary plug (approved by the Engineer) shall be installed and maintained until acceptance of the new pipe lines. Once accepted the contractor shall be responsible for the removal of the plug. This work shall beconsidered incidental to the pipe installation. 2. Remove all dirt and debris from the interior of each pipe length as the Work progresses. SANITARY UTILITY SEWER PIPING © 2021 City of Cottage Grove, Minnesota 33 31 00 - 5 3. Protect the exposed end of the pipe with temporary covers or plugs. 4. Protect in place pipe from damage and dislocation. K. Flexible Pipe Installation: Conform to ASTM D2321. L. Sanitary Sewer Service Connections: 1. Wye: a. Wye to be at 45-degree angle from horizontal. b. Plugs installed with Atlastic 77, Sonolastic Sealant, or approved equal, or specifically designed for the opening to be plugged. 2. Risers: Conform to Section 33 31 14. M.Installation of Insulation: 1. Place insulation over pipe in locations as shown on the Drawings. 2. Insulation is to be placed wherever sanitary sewer line comes within 3 feet of any storm structure or line, or within 5 feet of the ground surface. 3.03 CONNECT TO EXISTING SYSTEM A. Connect to Existing Structure: 1. Connect to existing structure at location shown on the Drawings. 2. If rubber boot exists at manhole opening, connect new pipe to the boot and secure. 3. If manhole opening does not contain rubber boot or the existing boot is damaged, core drill opening in the structure, and install a rubber boot in manhole opening prior to connection of pipe. 4. Make repairs to the structure required due to the Work performed, including installation of doghouse. 5. If necessary, the invert shall be reconstructed to accommodate new flow location. Reconstruction of invert will also be necessary if pipe sizes increase. B. Connect to Existing PVC Pipe (Stub): 1. Locate and expose end of existing stub. 2. Remove existing plug and connect to pipe. C. Cut-in Wye: 1. Cut-in Wye at location shown on Drawings. Type and size shown on Drawings. 2. Remove existing mainline pipe as necessary to make connection per Section 02 41 13. 3. Connect wye to existing mainline pipe with transition coupling. Pour concrete encasement around coupling. 4. In lieu of cutting in a wye, PVC saddles will be accepted following Engineer review and acceptance of shop drawings provided by Contractor. 5. Perform excavation and backfilling of trench per Section 33 05 05. 3.04 MANHOLE INSTALLATION A. Conform to the requirements of Section 33 39 00. SANITARY UTILITY SEWER PIPING © 2021 City of Cottage Grove, Minnesota 33 31 00 - 6 3.05 PROTECTION A. Plug all entrances and openings to the system promptly and before suspension of operations at the end of working day. B. Mark each plug location with 4 inch by 4 inch timber to above existing grade. C. At connections to existing system, temporarily plug the existing pipe with acceptable device until newly installed sewer lines have been accepted. 3.06 FIELD QUALITY CONTROL A.Trench Backfill Compaction: The Owner shall have an independent testing laboratory perform, as a minimum, the following tests. The location of the tests will be determined by the Engineer: 1.1 density test for every 300 feet of trench at varying depths (per 10 foot depth increments). 2.1 gradation test per Project for pipe bedding. 3. 1 gradation test per Project for improved pipe foundation material. B. Testing in conformance with requirements of Section 33 08 30. C. Re-test after corrective measures are completed. D. Cleanup: 1. Cleaning Pipe and Structures: a. If newly installed mains and structures are kept clean during construction, cleaning will not be required. b. If newly installed mains and/or structures become dirty due to negligence of the Contractor, cleaning will be performed at the sole expense of the Contractor. 2. The bailing or flushing method of cleaning pipe is acceptable only if adequate provisions, acceptable to the Engineer, for keeping dirt and debris out of the existing sewer system. Jetting may be required. 3. Complete prior to final inspection for acceptance. 4. Notify Engineer when all pipes and structures are clean, which will allow the Owner to schedule the televising of the sewer mains. END OF SECTION SANITARY UTILITY SEWER PIPING © 2021 City of Cottage Grove, Minnesota 33 31 00 - 7 This Page Left Blank Intentionally SECTION 33 31 14 SANITARY SEWER SERVICES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Sanitary sewer service pipe and all appurtenances. B.Related Sections: 1. Section 01 33 00 - Submittal Procedures. 2.Section 33 05 05 -Trenching and Backfilling. 3.Section 33 05 17 Adjust Miscellaneous Structures 4. Section 33 08 30 - Commissioning of Sanitary Sewer Utilities. 5. Section 33 31 00 - Sanitary Utility Sewer Piping. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Service Pipe: Measurement will be by linear foot for each size and type of pipe installed (including 3 foot end piece) as measured along the axis of the pipe with no regard to intervening fittings. Payment at the Bid Unit Price shall be compensation in full for all Work and costs, including excavation, pipe, fittings, 6 inch PE sleeve (as specified), backfill, and trench compaction. 2. Pipe Bedding for the PVC Sanitary Sewer Service Pipe: Measurement and payment shall be as per Section 33 05 05. 3. Improved Pipe Foundation Material: Measurement and Payment shall be as per Section 33 05 05. 4. No Bid Items have been included for service plugs or marking service ends. Payment for these items shall be included in the linear foot price for Service Pipe. 5.Service Riser Pipe:Measurement will be based on units of linear feet, according to size, measured laterally along the laying length from the wye to the top of the last riser section, with no regard to intervening fitting. Payment at the Unit Price will be considered payment in full for all work and costs associated with this Bid Item, including concrete reinforcement of the riser, wye, and main sewer. 6. Expose and Connect to Existing Wye: Measurement will be per each, according to size and type. Payment will include all costs related to excavating, exposing, and connecting to an existing wye that was installed by others, including removal of existing plug. 7. Required measurements of service installations shall be considered incidental to the service installation. 8. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. American Society of Testing Materials (ASTM): SANITARY SEWER SERVICES © 2021 City of Cottage Grove, Minnesota 33 31 14- 1 1. D1784 - Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (PVC) Compounds. 2. D1785 - Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120. 3. D2564 - Specification for Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems. 4. D2665 - Specification for Poly (Vinyl Chloride) (PVC) Plastic Drain, Waste, and Vent (DWV) Pipe and Fittings. 5. D2672 - Specification for Joints for IPS PVC Pipe Using Solvent Cement. 6. D2855 - Standard Practice for Making Solvent-Cemented Joints with Poly (Vinyl Chloride) (PVC) Pipe and Fittings. 1.04 SYSTEM DESCRIPTION A. This Work shall consist of the construction of sanitary sewer services in accordance with the requirements of the Contract. B. It is the intent of these Specifications to require the same quality of Work be received on the house services in the way of grade and alignment as is required on the main lines and laterals. 1.05 SUBMITTALS A. Submit the following items consistent with Section 01 33 00: 1. Product data for the following items: a. Pipe and fittings. 2. Responsibility), in accordance with 3.02.D. The Data Sheet for recording required measurements will be provided by Engineer. 1.06 SITE CONDITIONS A. All Work must be confined to within the limits of construction easements or public right-of-way. 1.07 SEQUENCING AND SCHEDULING A. Install sanitary sewer, water main, and all pipe deeper than the services prior to the installation of the services. B. Install sanitary sewer service in same trench as the water service or as directed by the Engineer. PART 2 PRODUCTS 2.01 MANUFACTURED UNITS A. Poly (Vinyl Chloride) (PVC) Schedule 40 Plastic Pipe and Fittings: 1. General: Pipe and fittings shall be made of compounds conforming to ASTM D1784 in accordance with the material requirements of D1785 and ASTM D2665. PVC fittings shall conform to ASTM D2665. Belled end pipe shall have tapered sockets conforming to ASTM D2672. 2. Design: Integral belled pipe with a minimum wall thickness conforming to Schedule 40. SANITARY SEWER SERVICES © 2021 City of Cottage Grove, Minnesota 33 31 14- 2 3. Solvent Cement Joints: The solvent cement used to join pipe and fittings shall meet the requirements of ASTM D2564. 4. Risers: conform to same requirements as service pipe. 2.02 BEDDING MATERIAL A. See Section 33 05 05. PART 3 EXECUTION 3.01 INSTALLATION A.Installation to be in accordance with the Detail Plate shown on Drawings. B. Governing Code: Minnesota Plumbing Code and any local ordinances that may apply. C. Locations of services to be staked by Engineer during construction. D. PVC Risers: 1. Pour concrete casement around connection per Standard Detail Plate SER-9. 2. Support pipe on undisturbed trench slope for entire riser length. 3. Slip joint connection of 4 inch PVC riser to wye. E. Minimum 1/4 inch per foot (2-percent) grade, unless otherwise directed by the Engineer. F. Installation and fittings: Similar to main line sanitary sewer pipe installation, conforming to the requirements of Section 33 31 00. G. Install pipe bedding for PVC sanitary sewer services per Section 33 05 05. H. The installation of solvent cemented joints shall be in accordance with ASTM D2855. I. Place glue-on plug at end of service, and a 3 foot long, 6 inch diameter perforated flexible polyethylene sleeve over the end of the vertical riser pipe. J. All proposed service line locations are shown on the Drawings. K. Responsibility), in accordance with 3.02.D. 3.02 FIELD QUALITY CONTROL A. Do not backfill trench until the service has been inspected and approved by the Engineer. B. Low pressure air and infiltration testing shall conform to Section 33 08 30. C. The Owner shall have an independent testing laboratory perform, as a minimum, the following tests. The location of the tests shall be determined by the Engineer: 1. 1 density test for every 3 services installed, at varying depths. SANITARY SEWER SERVICES © 2021 City of Cottage Grove, Minnesota 33 31 14- 3 D. Required documentation at the time of installation: 1. Field measurement of length of each sanitary sewer and water service installed. 2. Field measure the depth from the surveyed grade stake provided by the Owner to the invert of the 45 degree bend adjacent to the curb stop. 3. Field measurements as identified on Standard Detail Plate SER-5. 4. Field measurements for Riser/45 degree bend closest to the main. a. Field measure the depth from the surveyed grade stake provided by the Owner to the invert of the 45 degree bend. b. Horizontal distance from 45 degree bend to center of main pipe c. Length of vertical riser pipe 5. Provide Engineer with record of measurements on a weekly basis. 3.03PROTECTION A. Mark end of new service as shown on Standard Detail Plate SER-1. END OF SECTION SANITARY SEWER SERVICES © 2021 City of Cottage Grove, Minnesota 33 31 14- 4 SECTION 33 39 00 SANITARY UTILITY SEWER STRUCTURES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Sanitary sewer manholes and miscellaneous appurtenances. B.Related Sections: 1. Section 01 33 00 - Submittal Procedures. 2.Section 33 05 17-Adjust Miscellaneous Structures. 3.Section 33 05 05 -Trenching and Backfilling. 4. Section 33 31 00 - Sanitary Utility Sewer Piping. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Refer to Section 33 31 00 for gravity sewer pipe pay items. 2. Sanitary Sewer Manhole: Measurement will be per linear foot of depth from final rim elevation to lowest invert elevation based on the diameter of the manhole. Payment will include the manhole, manhole frame and casting, and adjusting rings in place as specified on the Drawings: a. Separate payment shall be made in accordance with Section 33 05 17 for placement of frame, casting, and adjustment rings. b. 70-percent partial payment will be made upon installation of the structure and 30- percent payment will be made upon final completion of doghouses and inverts. 3. Construct Manhole Over Existing Pipe: Measurement will be per linear foot of depth from final rim elevation to lowest invert elevation based on the diameter of the manhole. Payment will include the manhole, manhole frame and casting, adjusting rings in place as specified in the Drawings, connection to the existing pipe, and any necessary modifications to existing pipe and manhole to complete the connection. 4. A Bid Item has been provided for Sanitary Manhole, Spray Liner. Measurement will be per linear foot of depth of the precast concrete and based on the diameter of the manhole. Payment will include all preparation work and material application per the manufactures recommendations, as specified on the Drawings: 5. Inside Drop Inlet Pipe: Drop inlets will be measured by length from the lowest invert of the manhole to the invert of the pipe being served by the drop inlet. Payment shall be considered compensation in full for all work, including PVC C900 drop pipe, PVC C900 Tee (modified), PVC C900 90 degree bend, 20 feet of PVC C900 pipe outside of structure, pipe brackets and poured in place invert & benches. 6. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. SANITARY UTILITY SEWER STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 39 00 - 1 1.03 REFERENCES A. American Society of Testing and Materials (ASTM): 1. C150 - Specification for Portland Cement. 2. C443 - Specification for Joints for concrete Pipe and Manholes, Using Rubber Gaskets. 3. C478 - Specification for Precast Reinforced Concrete Manhole Sections. 1.04 SITE CONDITIONS A. Manhole locations are shown on the Drawings in a general way. Anticipate minor variations in both horizontal and vertical directions in locating existing system. 1.05SUBMITTALS A.Submit Product Data for the following itemsconsistent with Section 01 3300: 1.Gaskets. 2. Joint sealants. 3. Manufacturers recommended installation procedures for jointing. 4. Manhole spray lining materials. B. Submit shop drawings for the following items consistent with Section 01 33 00: 1. Manholes, including reinforcing, joints, pipe connections, and castings. 2. Shop drawings shall indicate complete information for fabrication and installation of units. Include the following: a. Plans and elevations locating and defining all material furnished by manufacturers. b. Sections and details showing connections, cast-in items, field installed lifting devices, capacities, all openings, and their relation to the structure. C. following items consistent with Section 01 33 00: 1. Castings. 2. Precast manhole sections and steps. D.Manhole/Catch Basin Elevation Report: 1. Complete the report attached to the end of this Section for each structure as it is constructed. The completed report shall be submitted each week to the Engineer or the Engineer's designated representative at some mutually agreeable time. E. Inside Drop Inlet Pipe per Standard Detail Plate SAN-4. 1.06 QUALITY ASSURANCE A. The quality of all materials, the process of manufacture, and the finished sections shall be subject to inspection and approval by the Engineer or other representative of the Owner. Such inspection may be made at the place of manufacture or on the Work after delivery, or at both places and the materials shall be subject to rejection at any time on account of failure to meet any of the requirements specified herein. Material rejected after delivery to the Site shall be marked for identification and shall be removed from the Site at once. All materials which have been damaged SANITARY UTILITY SEWER STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 39 00 - 2 after delivery will be rejected and if already installed shall be removed and replaced entirely at the Contractor's expense. B. At the time of inspection, the materials will be carefully examined for compliance with the appropriate ASTM Standard and this Section and with the approved manufacturer's drawings. All precast manhole sections shall be inspected for general appearance, dimension, "scratch- strength," blisters, cracks, roughness, soundness, etc. The surface shall be dense and close- textured. C. Manhole Design: 1. Have the manhole sections and top and bottom slabs designed and the detailed drawings prepared by a Professional Engineer, experienced in precast concrete manhole design, who is registered in the Ptate. PART 2 PRODUCTS 2.01 COMPONENTS A. Manholes: 1. Precast concrete sections conforming to ASTM C478 and this Section. No lift holes permitted. No structures constructed either partially or completely from segmental block will be accepted: a. All sections shall be cured by an approved method and shall not be shipped nor subjected to loading until the concrete compressive strength has attained 4,000 psi and not before 5 days after fabrication and/or repair, whichever is longer. b. The date of manufacture and the name and trademark of the manufacture shall be clearly marked on the inside of each precast section. c. Precast inverts to match pipe size and pipe grade through manhole (with flat grades, manhole inverts will not be allowed to have a 0.10 foot drop). d. No structures with any cracks will be accepted. 2. Height of the precast eccentric cone section shall be either 36 inch, 42 inch, or 48 inch in height. 3. Joints: Rubber gasketed joint forming a watertight seal conforming to ASTM C443. 4.Size: Inside diameter as indicated on the Drawings. 5. Water Tight Pipe Connections: a. All manholes shall be fabricated with pipe openings consisting of a rubber boot and stainless steel band in accordance with ASTM C923 to seal off the joint from allowing dirt, ground water, or other objectionable material from entering. These materials shall be installed with the fabrication on all new manholes. 6. Inside Drop Manhole: a. Drop pipe mounting brackets shall be Reliner Stainless Adjustable Pipe Brackets or approved equal, minimum 2 inch width. b. Stainless steel hardware. c. Mortar isallowed for upper doghouse in place of rubber boot when booted connections are not available due to outside diameter of pipe fitting used for drop pipe connection. d. Drop Tee shall be PVC C905 non-pressure tee. GPK non-stock, 8 inch Tee extension x G x G, or approved equal. e. 90 Degree Base Bend shall be PVC C905 non-pressure bend. GPK Y24-008 90 EL S x G, or approved equal. SANITARY UTILITY SEWER STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 39 00 - 3 f. Inverts and benches are to be poured in the field and include the 90 degree bend. B. Steps: Reinforced polypropylene plastic steps with No. 2 deformed grade steel rod. C. Structure Bases: 1. Pre-cast integral with bottom section of manhole for all structures 8 foot inside diameter and smaller. All structures supplied smaller than 8 foot inside diameter shall also have pre-cast inverts installed. 2. For structures with inside diameters greater than 8 feet, the structure base slab and manhole sections may be separate pre-cast units. A field constructed invert will be required when base slab and bottom manhole section are not integral. D.Castings:See Section 33 0517. 2.02 ACCESSORIES A. Concrete Materials: 1. Standard Portland Cement Type 1, clean washed sand, crushed rock, and gravel free from deleterious materials for monolithic concrete manholes and all manhole bases. 2. Portland Cement: Comply with the requirements of ASTM C150. 3. Design Mix: Subject to the approval of the Engineer. Use proper water-cement ratio to obtain 4,000 psi in 28 days. B. Mortar: Pre-mix bag intended for underground use conforming to ASTM C270 Type M, minimum compressive strength of 2,500 psi. C. Joint Sealants: 1. Ramnek, or approved equal. 2. Open cell polyurethane foam sealant, DOW 999, or approved equal. D. Adjusting Rings: Conform to Section 33 05 17. 2.03SPRAY LINER A. Hydrogen sulfide and corrosion resistant liner such as Zebron or approved equal. B. Polyurethane Coatings: High Performance, 2-part, 100 percent solids polyurethane coating, Zebron series, No.386. 1. Physical Properties: a. Color: Cream b. Specific Gravity (ASTM D792): 1.3 (10.84 lbs per gal) c. Tensile Strength (ASTM D638): 2500 psi at 77 degrees F (25 degress C) d. Elongation (ASTM D638): Recoverable; 67 percent at 77 degrees F (25 degrees C) e. Flexibility (ASTM D792): No effect bending 0.5 mm plate coated with 20 mils over 8 mm diameter mandrel. f. Compressibility (ASTM G95): 4200 psi g. h. Abrasion Resistance (ASTM D4060): 2.12 oz. (60 mg) i. Thermal Conductivity (ASTM C177): 0.000723 cal. Per sec. cm2 per degree C per cm at 20 SANITARY UTILITY SEWER STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 39 00 - 4 degrees C (0.175 btu per hr. ft. degree F per ft. at 77 degrees F) j. PART 3 EXECUTION 3.01 TRANSPORTATION A. Transport precast units by rail or truck in a manner to avoid excessive stress or strain on units. B. Support units during hauling and stockpiling with sufficient hardwood shores to prevent cracking and spalling. Secure units in place to prevent shifting or undesired movements. Location of temporary supports shall be as directed by precast manufacturer. 3.02 MANHOLE INSTALLATION A.Excavation and Preparation of Trench: Conform to Section 33 05 05. B. Furnish and install structures in accordance with Standard Detail Plates as shown on the Drawings. C. Place pre-cast integral base section on compacted subgrade and bedding for structures 6 feet diameter and smaller. D. Set pre-cast concrete sections plumb with a 1/2 inch (per 4 footprecast section) maximum out of plumb tolerance allowed. 1. Initial base section shall be set plumb with a 1/4 inch (per 4 foot precast section) maximum out of plumb tolerance allowed. E. Install short precast section (maximum 12 - 24 inch height) immediately below the eccentric cone or precast top slab. F. Position vertical wall of the eccentric cone on the downstream side. G. Casting Adjustment: 1. Conform to Section 33 05 17. 2. Seal joint at the casting frame seat with 2 rows of joint sealer. H. Steps: 1. Set the centerline of each step within each manhole to be within 2 inches of the vertical centerline for the group of steps. 2. Locate over downstream pipe, except for pipe 24 inches in diameter or greater. Then place where most appropriate to provide the most suitable access. 3. Offset step centerline from drop openings. 4. Install top step at a maximum of 20 inches below top of casting. 5. Secure and neatly mortar in place 12 - 16 inches on center spacing. I. Prevent entrance of dirt and debris from all new and existing manholes. SANITARY UTILITY SEWER STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 39 00 - 5 J. Pipe Connections: 1. All pipes entering the manhole must be cut with a power saw to provide a clean, smooth pipe surface. The pipe shall be cut to be 2 inches 2. Annular space between the outside of the pipe and opening in the structure shall be filled with mortar on the interior and exterior of the structure. Construct an interior collar/doghouse around the pipe from the wall of the structure to the end of the pipe with mortar. K. Inside Drop manhole inlets shall be constructed in accordance with Standard Detail Plate SAN-4 shown on the Drawings. L. Construct Manhole Over Existing Pipe: 1.Construct manhole over existing pipe at locations shown on the Drawings. 2. Saw cut existing pipe to fit flush with inside wall of new structure. 3. Seal any openings in manhole. M. When identified on the drawings, apply Zebron lining material recommendations and specifications found at the following link: 3.03 FIELD QUALITY CONTROL A. Failure of any mortar work within a structure (i.e. invert, doghouse, etc.) that occurs during the correction peri expense. B. Any leak of a precast manhole section joint shall be repaired by chemical injection or other approved material to the satisfaction of the Engineer. 3.04 PROTECTION A. Secure manholes and structures immediately after completion or before suspension of operations at the end of working day with casting or suitable alternative device. B.Mark structure susceptible to being hit by construction or vehicular traffic. 3.05 CLEANING A. All new manholes shall be thoroughly cleaned of all silt, debris, and foreign matter of any kind prior to final inspection. END OF SECTION SANITARY UTILITY SEWER STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 39 00 - 6 Manhole/Catch Basin Field Elevation Report Project Name: Date: Owner: Owner Project No: Bolton & Menk Project Rep: Bolton & Menk Project No: Contractor: Contractor is required to complete this form before payment of structure is approved. Structure Location Structure Design As- Comments / Street Type Invert Constructed Difference Direction Quality Structure Structure Name or (circle (from Invert ( + / -) of Assurance No. Station Easement one) Plan) Elevation * invert/flow Location MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron * - As-Constructed Invert Elevation provided by Contractor from measurements taken in the field to SANITARY UTILITY SEWER STRUCTURES © 2021 City of Cottage Grove, Minnesota 33 39 00 - 7 This Page Left Blank Intentionally SECTION 33 40 00 STORM DRAINAGE UTILITIES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Storm sewer pipe, manholes, catch basins, fittings, and miscellaneous appurtenances. B.Related Sections: 1. Section 01 33 00 - Submittal Procedures. 2.Section 01 57 13 -Temporary Erosion and Sediment Control. 3.Section 32 11 23-Aggregate Base Courses. 4. Section 32 16 13 - Concrete Curbs and Gutters. 5. Section 33 05 05 - Trenching and Backfilling. 6. Section 33 05 17 - Adjust Miscellaneous Structures. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Storm Sewer Pipe: Measurement will be based upon units of linear feet for each size, type, and class, furnished and installed complete in place as specified, regardless of depth. Including excavation, backfilling, and compaction. Pipe will be measured from centerline of structure to centerline of structure and will not include end sections: a. Pipe bedding will be paid in accordance with Section 33 05 05. b. Improved pipe foundation material, if necessary, shall be per Section 33 05 05. 2. Catch Basin, Catch Basin Manhole, and Manhole Structure: Measurement will be per linear foot of depth from final rim elevation to lowest pipe invert elevation or bottom of sump according to type and size for furnishing and installing structures complete in place as specified, including casting frame and cover, adjusting rings,mortar invert (if required) and concrete stool grate frame (if requiredper detail). a. 70-percent partial payment will be made upon installation and 30-percent payment will be made upon final completion of doghouses and inverts. 3. Flared Ends with trash guard: Measurement will be based upon units of each size installed, according to type, at locations indicated in the Drawings complete in place as specified, including excavation, backfilling, compaction and trash guard: a. Where a sewer line is terminated with a flared end section, tying the last 3 joints per Standard Detail Plate STO-11 is considered incidental to the installation of the pipe. 4. Random Rip Rap: Measurement will be based upon units of cubic yards of Rip Rap placed, according to class. Payment of the Bid Item shall include geotextile fabric as required per Standard Detail Plate STO-12. 5. Grouted Rip Rap:Measurement will be based upon units of cubic yards of rip rap placed, according to class. Payment of the Bid Item shall includegeotextile fabric and 6 inch concrete layer as required per Standard Detail Plate STO-13. 6. Connect to Existing Pipe: Measurement shall be per each connection made, according to size and type of existing pipe, and regardless of type of existing bulkhead or plug, or type of STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 1 connection made. Payment will include all costs related to making the connection, including removal and disposal of the existing bulkhead or plug, and construction of concrete collar if necessary. 7. Connect Existing Pipe to New Structure: Measurement shall be per each pipe connected to the new structure, regardless of size of existing pipe. Payment will include all costs related to making the connection, including removal and replacement of existing pipe as directed by Engineer. 8. Connect to Existing Structure: Measurement shall be per each connection made, regardless of size of opening, type of existing bulkhead, or type of existing structure. Saw cutting of the pipe installed in the opening if necessary shall be considered incidental. Core cutting the connection and reconstruction of existing structure invert if necessary shall also be considered incidental to the connection. 9.RC LR Bend: Measurement will be per each, according to size and class. Payment will include all costs related to furnishing and installing the bend, including excavation, backfilling, and compaction. 10. Bulkhead Storm Sewer Pipe: Measurement will be per each bulkhead installed according to size. Payment will include all costs related to bulkheading or plugging the pipe as described in this Section. 11. Poured-In-Place Concrete Seepage Collar: Measurement will be per each collar constructed according to size of pipe it is constructed around. Payment at the Unit Price shall include all costs related to constructing the collar in accordance with Standard Detail Plate STO-21, including excavation, forms, and material. 12. Construct Manhole Over Existing Pipe: Measurement will be per linear foot of depth from final rim elevation to lowest invert elevation according to size. Payment will include the cost of the manhole and installation over the existing line, casting frame and cover, and adjusting rings in place as specified. 13. Precast 2 Foot By 3 Foot Outlet Structure, Including Grate and R1737 Casting: Measurement will be per each. Payment will include all costs related to furnishing and installing the structure perStandard Detail Plate STO-19. 14. Overflow Structure With Trash Guard: Measurement will be per each according to size. Payment will include all costs related to furnishing and installing the structure per Standard Detail Plate STO-20, including trash guard. 15. Patch Structure: Measurement will be per each storm sewer or sanitary sewer structure patched, regardless of the size of structure or areas patched. Payment will include all cost associated to patching the structure as specified. 16. Vacuum cleaning of all sump manholes to allow inspection by the City as part of the final street construction: Measurement will be per each structure cleaned. Payment will include all costs to remove any water and dirt within the structure. 17. Televise Storm Sewer: Measurement will be based upon units of linear feet of pipe televised, regardless of size or type. Pipe will be measured from centerline of structure to centerline of structure. Payment will be compensation for pipe preparation, televising, providing televising report, and all other associated costs. 18. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 2 1.03 REFERENCES A. American Society of Testing and Materials (ASTM): 1. A153 - Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware. 2. C76 - Specification for Reinforced Concrete Culvert, Drain, and Sewer Pipe. 3. C139 - Specification for Concrete Masonry Units for Construction of Catch Basins and Manholes. 4. C150 - Specification for Portland Cement. 5. C206 - Specification for Finishing Hydrated Lime. 6. C361 - Specification for Reinforced Concrete Low Head Pressure Pipe. 7. C443 - Specification for Joints for Circular Concrete Sewer and Pipe, Using Rubber Gaskets. 8. C478 - Specification for Precast Reinforced Concrete Manhole Sections. B. Minnesota Department of Transportation , 2018 (MnDOT Spec.): 1. 2461 - Structural Concrete. 2. 2511 - Rip Rap. 3. 3601 - Rip Rap Materials. 4. 3733 - Geotextiles. C. National Association of Sewer Service Companies (NASSCO): 1. PACP Pipeline Assessment Certification Program 1.04 SEQUENCING AND SCHEDULING A. Maintain existing storm sewer flows during construction. This may require a temporary pipe connection during periods of time when construction is not occurring. B. Set up traffic control prior to removals. Maintain traffic during storm sewer improvements unless otherwise approved by Owner. C. Do not pursue work-causing shut off of utility service (gas, water, electric, telephone, TV, etc.) to consumers until the utility owner is contacted and all consumers are notified of the shut-off schedule. D. Successfully complete required inspections and tests before commencement of Section 32 11 23 and Section 32 16 13. E. Coordinate inspection of completed sump structures with City prior to acceptance. May require pumping water and vacuuming dirt out of structure prior to inspection. F. Televise Storm Sewer: 1. Notify Engineer 48 hours in advance of the televising of all pipes. 2. Complete all required mandrel and air testing prior to televising. 3. All private utilities shall be installed by others prior to televising storm sewer. 4. Start televising no sooner than 30 days, but no later than 60 days after all utility, excavation, and street subgrade work is completed as part of this contract. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 3 1.05 SUBMITTALS A. Submit Shop Drawings for storm sewer structures consistent with Section 01 33 00. B. Shop drawings shall indicate complete information for fabrication and installation of units. Include the following: 1. Plans and elevations locating and defining all material furnished by manufacturers. 2. Sections and details showing connections, cast-in items, and field installed lifting devices, capacities, all openings, and their relation to the structure. C. 1. Gray iron castings. 2.Precast manhole sections. 3. Rip rap. D.Manhole/Catch Basin Elevation Report: 1. Complete the report attached to the end of this Section for each structure as it is constructed. Submit complete report each week to the Engineer or the Engineer's designated representative at some mutually agreeable time. E. Televising Report: 1. Submit 1 copy of the Written Report and Video Report within 30 days of completion of televising. 2. Report Requirements: a. Each run shall consist of a starting and ending structure number and a zero reading on the counter at center of the starting structure. b. Examine each service wye by using the pan and tilt feature. c. Location, length and identify sags within the flowline of the pipe of 10% or greater, example 0.06 foot for an 8 inch diameter pipe. d. Location in change in pipe material to be noted. e. The video camera operator shall type into the video the station (distance), wye location on either the left or right side of the pipe, and any problems they notice while televising the sewer lines. f.Take a still photograph at any questionable joint or possible defect. 3. Provide a Written Report with a graphic cross section of the pipe showing the manholes, all wye connections, and defects. This report shall include PACP codes and descriptions. 4. Submit a Video Report in a DVD format with audio, including a printable version of the Written Report and full video of all televised pipe runs. PART 2 PRODUCTS 2.01 MATERIALS A. Ready Mix Mortar Materials: 1. Sand Mix, 4,000 PSI B. Mortar: Pre-mix bag intended for underground use conforming to ASTM C270 Type M, minimum compressive strength of 2,500 psi. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 4 2.02 STORM MANHOLE AND CATCH BASIN FRAMES AND COVERS A. Conform to Section 33 05 17. 2.03 STORM MANHOLES AND CATCH BASINS A. General Requirements: ASTM C478 and details on the Drawings. B. Diameter and special requirements are shown on the Drawings. C. Structures, bases, and top slabs shall be of precast concrete. No structure or any portion thereof will be allowed to beconstructed of segmental block: 1.All sections shall be cured by an approved method and shall not be shipped nor subjected to loading until the concrete compressive strength has attained 4,000 psi and not before 5 days after fabrication and/or repair, whichever is longer 2.Shallow structures that cannot be constructed in the standard manner shall be fabricated in a precast design similar to Standard Detail Plate STO-10. D. Manhole Joints: Rubber gasketed joint forming a watertight seal conforming to ASTM C443. E. Manhole Steps: Reinforced polypropylene plastic steps with No. 2 deformed grade steel rod. F. No structures with any cracks will be accepted G. Design: 1. Have the manhole sections and top and bottom slabs designed and the detailed drawings prepared by a Professional Engineer, experienced in precast concrete manhole design, who is tate. 2.04 PIPE MATERIALS A. Reinforced ConcretePipe (RCP) and Fittings: 1. General Requirement: ASTM C76, Wall B with circular reinforcing. 2. Materials: Conform to the requirements of ASTM C76, Wall B. Profile gaskets shall be synthetic rubber, circular reinforcing in cross-section, and shall conform to MnDOT Plate 3006. 3. Pipe Joints: Bell shall conform to MnDOT Plate 3006. 4. Pipe Class: As shown on the Drawings. 5. Marking: Each pipe shall be identified with the name of the manufacturer trade name or trademark and code, identification of plant, date of manufacture, and the pipe class and specification design. 2.05 TRASH GUARDS A. General Requirement: ASTM A153. B. Materials: Galvanized steel rods meeting the requirements in ASTM A153. C. Bar size and configuration as shown on the Drawings. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 5 D. Securely attached to end section. 2.06 PIPE TIE RODS A. HAALA Industries, Inc, or approved equal. 1. Washington County Tie Rod. 2. Standoff Culvert Tie. 3. Hot Dip Galvanized. 2.07 RIP RAP A. General Requirement: Conform to MnDOT Spec. 2511: 1.Rip Rap Materials: Conform to MnDOT Spec. 3601 2. Granular Filter: Conform to MnDOT Spec. 3601.2.B.1 3. Geotextile Filter: Conform to MnDOT Spec. 3733, Type 4 4.Concrete: Conform to MnDOT Spec. 2461 2.08 CONCRETE STOOL GRATE FRAME FOR OFF STREET CATCH BASIN A. General Requirement: Conform to Standard Detail Plate STO-9. PART 3 EXECUTION 3.01 PREPARATION A. Trench Excavation and Backfill shall conform to Section 33 05 05. 3.02 EXAMINATION A. Perform televising pipeline inspections in accordance with NASSCO Pipeline Assessment and Certification Program (PACP). When requested provide the require certification for personnel preforming the actual work. B. Commence test procedures only when pipe and structures are clean and free of dirt, water, or other foreign matter. Pipe cleaning shall be performed in accordance with NASSCO Jetter Code of Practice. 3.03 INSTALLATION A. Connect to Existing Structure: 1. Connect to existing structure at location shown on the Drawings. 2. Core the hole in the structure and saw cut the pipe 2 inches inside midpoint. 3. Bulkhead void between outside wall of pipe and edge of opening with mortar and block/brick. 4. Reconstruct manhole bench/invert. B. Connect Existing Pipe to New Structure: 1. Where an existing structure is removed and replaced with a new structure, connect all existing pipes to the new structure. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 6 2. Remove pipe segments that are damaged during the structure replacement with new pipes of the same size and type, or as directed by Engineer. 3. Saw cut existing or new pipes . 4. Bulkhead void between outside wall of pipe and edge of opening with mortar and block/brick. C. Connect to End of Existing Pipe: 1. Connect to existing pipe at locations shown on the Drawings. 2. Locate and expose end of existing pipe. 3. Remove existing bulkhead or plug and dispose of off Site: a. Take care not to damage existing pipe. b. Any segment of pipe damaged by Contractor shall be replaced with new materials at no expense to the Project. 4.Utilize standard bell and spigot joint with rubber profile gasket if possible. 5. If butt connection must be made to existing pipe, construct concrete collar around joint. Collar shall be minimum 12 inches thick in all locations and shall extend a minimum of 12 inches each way of the joint. D. Pipe Installation: 1. Lay and maintain pipe appurtenances to the alignment, grade, and location shown on the Drawings and/or staked in the field. No deviation from the Drawing and/or staked alignment, grade, or location is allowed, unless approved by Engineer. Deviation from grade in excess of 0.05 percent (with no intermediate high points, level sections, or reverse invert slope) may be cause 2. General Pipe Installation Procedures: a. entire joint surface; center spigot in bell and push spigot home; take care to prevent dirt from entering the joint space; bring pipe to proper line and grade, and secure pipe in place by properly bedding. 3. Lay pipe upgrade with spigot ends pointing in the direction of flow. 4. All joints must be watertight. 5. Remove all foreign matter or dirt from inside the pipe. Keep the bell and spigot clean during and after installation. Take care to prevent dirt from entering the joint space. Remove any superfluous material from inside the pipe after pipe installation by means of an approved follower or scraper. 6. Where cut-ins make it impossible to construct bell and spigot joints or when dissimilar pipe materials are joined, a reinforced concrete collar shall be placed completely surrounding the joint or the connection shall be made by using an approved adapter. 7. Any pipe which has been disturbed after being laid must be taken up, the joint cleaned and properly re-laid as directed by the Engineer. 8. Trash guards required on upstream and downstream pipes, regardless of pipe size. 9. Where a sewer line outlets to grade or where the line is terminated with a flared end section: a. Fasten the last 3 joints together using 2 bolt fasteners (tie rods) per joint approved and installed on outside of the pipe, regardless of pipe size. b. Tie rods shall be Washington County Tie Rod. E. Structures and Appurtenances Installation: 1. Furnish and install structures in accordance with the Drawings. 2. Excavate to depth and size as shown in the Drawings. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 7 3. Preformed inverts are not allowed. 4. Structure inverts: a. Construct inverts of manholes and catch basins using a Ready Mix mortar material. b. Construct inverts shaped to the half section of equivalent size pipe conforming to the inlet and outlet pipe so as to allow for a free, uninterrupted flow with all surfaces sloping to the flow line. 5. Concrete pipes entering manholes: a. End of pipes must be cut with a concrete saw. b. Annular space between the outside of the pipe and opening in the structure shall be filled with mortar on the interior and exterior of the structure. Construct an interior collar/doghouse around the pipe from the wall of the structure to the end of the pipe with mortar. 6.Steps: a. Locate on the downstream side, except for pipe 24 inches in diameter or greater. Install in the most appropriate place, to provide suitable access. b. Secure and neatly mortar in place 12 - 16 inches on center spacing. 7. Position vertical wall of the eccentric cone on the downstream side. 8. On structures with a build that contains more than 1 barrel section, the section immediately below the precast top slab shall be maximum 16 inch height. 9. Lift holes shall be neatly mortared up. 10. Remove all debris from Structures, invert and benches prior to final inspection and acceptance. 11. Remove all water and debris from Sump Manhole Structures, to allow for final inspection and acceptance. 12. Install Adjustment Rings and Adjust Casting: Conforming to Section 33 05 17. F. Construct Manhole Over Existing Pipe: 1. Construct manhole over existing pipe at locations shown on the Drawings. 2. Saw cut existing pipe to fit flush with inside wall of new structure. 3. Seal any openings in manhole. G.Rip Rap: 1. General: Conform to MnDOT Spec. 2511. 2. Install Rip Rap per Standard Detail Plates STO-12 and STO-13prior to placement of flared end section. 3. Place 6 inch thick layer of concrete at the midpoint of the Rip Rap per Detail Plate STO-13. H. Bulkhead Pipe: 1. Bulkhead pipe at locations shown on Drawings with brick, mortar, or concrete block masonry 8 inches thick. 2. Precast concrete plugs may be used in lieu of bulkhead. Plug must fit snugly into pipe opening and be watertight. I. Seepage Collar: 1. Construct at location indicated on Drawings. 2. Construct per Standard Detail Plate STO-21. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 8 J. Patch Structure Walls, Doghouse, Invert, or Rings: 1. Clean areas to be patched by removing debris, loose concrete, and any other foreign materials. 2. Patch area with mortar to provide smooth patch that seals the structure. K. Concrete Stool Grate Frame: 1. Construct on off street catch basins as shown on the plans or as directed by Engineer. 2. Construct per Standard Detail Plate STO-9. L. Storm Structure Location Marker: 1. Off street structures shall be marked permanently with the specified sign and sign post as indicated on the plans. 2.Install sign in accordance with Section 34 41 05. 3.04 FIELD QUALITY CONTROL A. Scope: 1. All pipeline testing is considered incidental to the Bid cost of the pipe. 2. Engineer to observe and verify that all tests and visual inspections have been completed prior to final acceptance. B. Cleaning: 1. Consists of Cleaning the Pipe and Structures: a. If newly installed mains and structures are kept clean during construction, cleaning will not be required. b. If newly installed mains and/or structures become dirty due to negligence of the Contractor, cleaning will be performed at the sole expense of the Contractor. 2. The bailing or flushing method of cleaning pipe is acceptable only if adequate provisions acceptable to the Engineer for keeping dirt and debris out of the existing sewer system or ponds are employed. Jetting may be required. 3. Complete prior to final inspection for acceptance. C. Required Tests and Inspections: 1.Infiltration: a. To determine the amount of ground water infiltration into the sewers. b. Test waived if no visible infiltration is observed during the lamping inspection. c. Measurement made by means of 90 degree v-notch weirs placed in the lines as directed by the Engineer. d. the sewer is greater than the maximum allowable leakage. e. Maximum Allowable Rate of Leakage: Not more than 100 gallons per mile per inch diameter per day. f. Tests may be taken between individual manholes and the infiltration in any given line must not exceed the specified maximum allowable rate. g. Method of Measurement: Measurement of time for a predetermined volume of flow to occur. 2. Lamping will be performed by Engineer to: a. Verify installation is to true line and grade. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 9 b. Verify installed pipe is structurally sound. c. Verify there are no broken or deflective pipes. d. Verify that joints are all home. e. Verify structures conform to specified requirements. 3. Trench Backfill Compaction: a. The Owner shall have an independent testing laboratory perform, as minimum, the following tests. The location of the tests shall be determined by the Engineer: 1) 1 density test for every 300 feet of trench at varying depths (per each 10 foot depth increment). 4. Alignment: a. Horizontal deviation in excess of 3 inches from back of curb to back of structure opening (for casting and rings) is not allowed. Deviation in excess of 3 inches will be cause for reinstallation of structure at the b. The vertical and horizontal alignment of the casting adjustment shall be approved by the Engineer prior to constructing the 10 foot concrete curb and gutter transition on either side of the casting. 3.05 STORM SEWER CLOSED CIRCUIT TELEVISION INSPECTION A. Televising: 1. Newly installed storm sewer segments must be in a clean and ready condition prior to the television inspection. 2. Immediately clean any lines found to be dirty prior to televising. Costs for all such cleaning shall be the responsibility of the Contractor. 3. Provide sufficient water to run through the new storm sewer system prior to televising lines to be able to distinguish any sags or alignment problems with the pipe. 4. Personnel completing televising must be PACP certified. 5. Final acceptance of the video report will require the pipe to be clean as a new pipe. 6. Provide video and report to Owner. B. General: 1. Provide a camera that will be self-propelled and will have the ability to tilt up and down and pan left and right. The camera must provide color images. 2. Speed shall not exceed 30 feet per minute. C. Defects: 1. Immediately correct any defects, faulty joints, cracked pipe, or other deficiency noted by the television inspection. 2. A plan for repair shall be presented to and approved by the Owner and Engineer prior to the repair occurring. 3. Re-televise all corrected pipe runs after correction. 4. Any costs associated with correction and re-televising of the sewer system will be paid by the Contractor. 3.06 PROTECTION A. Plug all entrances and openings to the system promptly and before suspension of operations at the end of working day. STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 10 B. Secure manholes and structures immediately after completion or before suspension of operations at the end of working day with castings or suitable alternative device. C. Mark all structures to avoid being hit by construction or vehicular traffic. D. Mark each plug location with 4 inches by 4 inches timbers to above grade to aid in marking the future connection. E. Establish erosion control measures as per Section 01 57 13. END OF SECTION STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 11 Manhole/Catch Basin Field Elevation Report Project Name: Date: Owner: Owner Project No: Bolton & Menk Project Rep: Bolton & Menk Project No: Contractor: Contractor is required to complete this form before payment of structure is approved. Structure Location Structure Design As- Comments / Street Type Invert Constructed Difference Direction Quality Structure Structure Name or (circle (from Invert ( + / -) of Assurance No. Station Easement one) Plan) Elevation * invert/flow Location MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron MH CB Apron * - As-Constructed Invert Elevation provided by Contractor from measurements taken in the field to STORM DRAINAGE UTILITIES © 2021 City of Cottage Grove, Minnesota 33 40 00 - 12 SECTION 33 46 00 SUBDRAINAGE PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Storm sewer service and drain tile. B.Related Sections: 1. Section 33 05 05 - Trenching and Backfilling. 2.Section 33 31 14 -Sanitary Sewer Services. 1.02 PRICE AND PAYMENT PROCEDURES A. Measurement and Payment: 1. Perforated PVC Drain Tile, SDR 26: This Bid Item shall be used for installation of Drain Tile for subgrade drainage within street areas. Measurement will be by linear feet of pipe along its axis, according to size, and with no regard to intervening fittings. Payment shall include all costs related to furnishing and installing the draintile pipe per Standard Detail Plate STO-14, including geotextile, aggregate and fittings: a. It should be noted that due to the estimation required for Drawing preparation, the quantity of drain tile actually constructed may vary significantly from those given in the Bid Form. b. The Engineer reserves the right to increase or decrease the Drain Tile quantity, and associated Connect Drain Tile to Structure quantity, with no change to the Contract Unit Price. No additional compensation will be considered or allowed for changes to the estimated quantities or for the deletion of any of these Bid Items in their entirety. 2. Connect Drain Tile to Existing Structure: Measurement will be per each. Payment will include all costs related to core drilling a hole in the storm sewer structure, making the connection, and patching as specified. 3. Storm Sewer Service: Measurement will be by linear feet of pipe actually installed, according to size and type, as measured along the axis of the pipe with no regard to intervening fittings. Payment at the Unit Price shall be compensation in full for all work and costs, including excavation, pipe,fittings, backfill, and trench compaction: a. Connecting to an existing hole in a precast structure will be considered incidental to the installation of the service pipe. b. PVC plug for the end of the service is considered incidental. 4. Pipe Bedding for the PVC Storm Sewer Service Pipe: Measurement and payment shall be as per Section 33 05 05. 5. Supplying and installing required markers at service ends shall be considered incidental to the service installation. 6. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. SUBDRAINAGE © 2021 City of Cottage Grove, Minnesota 33 46 00 - 1 1.03 REFERENCES A. American Society of Testing and Materials (ASTM): 1. D1784 - Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (PVC) Compounds. 2. D3034 - Specification for Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings. 3. D3212 - Specification for Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric Seals. 4. F477 - Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe. B. Minnesota Department of Transportation 8 Edition (MnDOT Spec.): 1.3149-Granular Material. 2. 3733 - Geotextiles. 1.04 SEQUENCING AND SCHEDULING A. Install sanitary sewer, water main, storm sewer, and all pipe deeper than the services prior to the installation of the services. B. Install draintile after completion of aggregate backfill and prior to gravel base placement. PART 2 PRODUCTS 2.01 PIPE AND FITTINGS A. Drain Tile: PSM Poly (Vinyl Chloride) (PVC) Plastic Pipe and Fittings: 1. General: Pipe and fittings shall be made of compounds conforming to ASTM D1784 in accordance with the material requirements of ASTM D3034. 2. Design: Integral bell gasketed joint and a minimum wall thickness conforming to SDR 26. 3. Joints: Elastomeric gasket joints providing a water-tight seal conforming to ASTM D3212 or ASTM F477. 4. Perforations: Circular on 3-1/4 inches by 6-1/4 inches centers. 5.Hole size:maximum of 3/8 inch and a minimum of 3/16 inch, arranged in 4 rows along the full length of the pipe. B. Storm Sewer Service: Poly (Vinyl Chloride) (PVC) Schedule 40 Plastic Pipe conforming to Section 33 31 14. 2.02 BEDDING MATERIAL FOR STORM SEWER SERVICE A. Granular Borrow meeting MnDOT Spec. 3149.2.B.1, as modifiedherein: 1. 100-percent passing, by weight, the 1 inch sieve. 2.03 DRAIN TILE AGGREGATE A. Coarse Filter Aggregate conforming to MnDOT Spec. 3149.2.H, as modified herein: 1. Excluding crushed carbonated quarry rock, crushed concrete, and salvaged bituminous. SUBDRAINAGE © 2021 City of Cottage Grove, Minnesota 33 46 00 - 2 2.04 GEOTEXTILE A. Geotextile wrap shall conform to MnDOT Spec. 3733, Type 1. PART 3 EXECUTION 3.01 GENERAL A. The location and alignment of the subsurface drains and outlets will be determined in the field by the Engineer, based on subsurface conditions. 3.02 DRAIN TILE INSTALLATION A. Conform to details on Drawings. B.Construct at locations and elevations determined by Engineer or as shown on the Drawings. C. Pipe Bedding: drain tile aggregate. D. Grade: Unless otherwise specified or shown on the Drawings, the grade of pipes shall not be flatter than 0.50-percent grade or match the street grade. E. Plug upstream end of the drain pipe. F. Sections of the drain pipe shall be firmly joined. G. Place pipe so that the perforations are in the position indicated on the Drawings or designated by the Engineer. H. Connections: Connect to hole provided in precast structure. Seal joint with mortar. Core drill connection to structure where precast hole is not provided. I. Compaction: Conform to Section 33 05 05. J.Flushing: After installation has been completed, pipes shall be flushed with sufficient water to remove material that has entered the pipes during construction. 3.03 STORM SEWER SERVICE INSTALLATION A. Construct at locations and elevations determined by Engineer or as shown on the Drawings. B. Pipe Bedding: Bedding material. C. Plug upstream end of pipe. D. Sections of the pipe shall be firmly joined. E. Connections: Connect to hole provided in precast structure. Seal joint with mortar. Core drill connection to structure where precast hole is not provided. SUBDRAINAGE © 2021 City of Cottage Grove, Minnesota 33 46 00 - 3 F. Compaction: Conform to Section 33 05 05. 3.04 FIELD QUALITY CONTROL A. Do not backfill trench until the pipe has been inspected and approved by the Engineer. B. Compact all trench backfill 3.05 PROTECTION A. Mark each storm sewer service plug location with 4 inch by 4 inch timbers to above grade to aid in marking the future connection. END OF SECTION SUBDRAINAGE © 2021 City of Cottage Grove, Minnesota 33 46 00 - 4 SECTION 34 41 05 TRAFFIC SIGNS AND DEVICES PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Signs, signposts, and hardware. 2. Double wooden barricades. 1.02 PRICE AND PAYMENT PROCEDURES A.Measurement and Payment: 1. All new signs shall be measured in accordance with MnDOT Spec. 2564.4.G. Payment for all sign installation shall be at the Bid Unit Price per unit of measure of square feet and shall include all materials, equipment, and labor necessary to install each sign and post(s) at the staked location: a. There will be no extra compensation for posts, regardless of length or required configuration. b. There shall be no extra compensation for post installations in bituminous or concrete surfaces. 2. Permanent Barricade: Measurement will be per each. Payment will include all costs related to furnishing and installing the barricade per the Standard Detail Plate STR-32. a. The future road extension sign, if required, will be paid separately as a new sign under the appropriate Bid Item. 3. City Monument Post: Measurement will be per each. Payment will include pick-up and installing the open space marker per the Standard Detail Plate STR-40. 4. All other Work and costs of this Section shall be incidental to the Project and included in the Total Base Bid. 1.03 REFERENCES A. Minnesota Department of Transportation , 2018 Edition (MnDOT Spec.): 1. 2564 - Traffic Signs and Devices. 2. 3352 Signs, Delineators, and Markers. B. Minnesota Manual on Uniform Traffic Control Devices (MMUTCD). C. Minnesota Department of Transportation Standard Signs Manual. 1.04 DELIVERY, STORAGE, AND HANDLING A. Upon delivery to the Site, store the materials at least 10 feet away from any construction or traveled roadways areas. Vehicles and equipment shall not be stored, even temporarily, in the TRAFFIC SIGNS AND DEVICES © 2021 City of Cottage Grove, Minnesota 34 41 05 - 1 buffer zone of the work area or where it would be so close to moving traffic that it is in the judgment of the Engineer a potential hazard to motorists. 1.05 SEQUENCING AND SCHEDULING A. Notify the Engineer at least 48 hours prior to commencing the work under this Section of the Contract for required construction staking. B. Schedule an onsite pre-signing meeting with the Owner, Engineer, and Signing Subcontractor (if appropriate) a minimum of 24 hours prior to the installation of any signing. C. Schedule private utility locates through Gopher State One. Call program prior to sign post installation. D. Contact Washington County for all signs within the County right-of-way that will require temporary or permanent removal. E. Install signs within 7 calendar days after placement of the pavement adjacent to the sign locations. F. Install signs concurrently with paving done under traffic. PART 2 PRODUCTS 2.01 MATERIALS A. Sign Material: 1. Sign Panel Base Material: Sheet aluminum conforming to the material requirements of MnDOT Spec. 3352.2.A.1.a. 2. Sign Face Material: a. Traffic Sign Panels: Reflective sheeting conforming to the requirements of MnDOT Spec. 3352.2.A.2. Diamond Grade DG3, Electro cut or silk screen only, no digital printing. b. Street Name Blade Signs: reflective sheeting, Diamond Grade DG3, Electro cut or silk screen only, no digital printing. 3. MnDOT Spec. 3352.2.A.5. B. Sign Panels: 1. Sign panels shall be fabricated and hole punched in accordance with the standard drawings in the MnDOT Standard Signs Manual. 2. Street name blade signs shall be provided by and installed by the City of Cottage Grove. C. Sign Posts Flange Channel: 1. Traffic Signs: a. Boulevard Installation: 1) All sign posts sha a) Bottom Section: 3.0 lbs./ft. TRAFFIC SIGNS AND DEVICES © 2021 City of Cottage Grove, Minnesota 34 41 05 - 2 b) Top Section: at least 2.5 lbs./ft. and not greater the weight of the bottom post. 2) The appropriate length of the upper post shall be determined by the Contractor to meet the construction requirements of the above ground stated references at each specific location. b. Concrete Median Installation: 1) Telespar square tube system 2) 2 inches square 3) 12 gauge galvanized steel 4) Length: 9 feet, or as determined by Contractor as necessary to meet the construction requirements of the references and this section at each specific sign location: a) Telespar Post Part No. 16125 (9 foot) 2. Anchor System: a.Concrete Median Location Kleen Break Anchor: 1) Kleen Break Surface Mount Anchor (Model No. 425), with receiving coupler, shear bolt and locking wedge. 2) Mount to surface using Galvanized Simpson Strongtie Titan HD Concrete anchor bolt 1/2 inch x 4 inch (1/2 inch bolt shank): a) 3D Specialties (Part No. 55820). b) Minimum embedded depth of 3-5/8 inches. c) Allowable tension load shall be 2,270 lbs. when installed in 3000 psi concrete. d) Allowable shim of up to 1/2 inch. e) Longer bolt is acceptable to maintain the 3-5/8 inchminimum embedment depth when shimming. 3) Use 2 inch square X 9 foot, 12 gauge Telespar posts (Part No. 16125) with a 1-3/4 inch square X 3foot, 12 gauge Telespar post (Part No. 15520) insert in the bottom (to cover bumper strike area). 4) Follow Kleen Break Model 425, Drawing No. XKBSM425-20-CI, for installation instructions. 3. Hardware: a. Sign Panel: No rivets: 1) 5/16 18 by 2-1/2 inch galvanized carriage bolts. 2) 7/8 inch OD Nylon washer, 1/32 inch thick. 3) 3/8 inch stainless steel washer. 4) 5/16 18 galvanized hex nuts. b. Anchor System: Boulevard Location: 1) 5/16 inch diameter medium corner bolt with nut. Galvanized. (Telespar Part No. 56202). D. Permanent Barricade: 1. Per Standard Detail Plate STR-32. E. City Monument Post: 1. Monument posts shall be purchased from the City of Cottage Grove directly and picked up from Cottage Grove Public Works facility at 8635 West Point Douglas Road, Cottage Grove MN 55016. 2.02 SOURCE QUALITY CONTROL A. All material certification shall conform to MnDOT Spec 2564. TRAFFIC SIGNS AND DEVICES © 2021 City of Cottage Grove, Minnesota 34 41 05 - 3 PART 3 EXECUTION 3.01 GENERAL A. Unless otherwise noted or modified herein, all sections of MnDOT Spec. 2564, all sections of B. The fabrication of all signs and devices shall conform to MnDOT Spec. 2564 and the latest edition of the MMUTCD and the MnDOT Standard Signs Manual. C. The sign number designation indicated on the Drawings shall comply with applicable requirements of MMUTCD and MnDOT Standard Signs Manual. 3.02 CONSTRUCTION A.Sign locations shown on the Drawings are only approximate.The final locations shall be determined in the field by the Engineer. Have all underground utilities located prior to installing all signposts. Provide Engineer 48 hour notice prior to sign installations to allow for adequate staking time: 1. Standard location for traffic sign posts shall be a 6 feet behind the back of curb or edge of traveled road. 2. The lowest point of any traffic sign panel installed shall be 7 feet above finish grade at the point of installation. The lowest point of any street name sign installed shall be 10 feet above finish grade at the point of installation B. Fabricate, hole punch, and mount sign panels in accordance with the standard drawings in the MnDOT Standard Signs Manual. Date the back of each newly installed sign panel with a theft warning sticker stating the month and year using inventory/I.D. stickers approved by the Owner. C. Install nylon washers between the bolt and the sign face (sheeting) to protect face. Do not over tighten bolts to the point where the sign sheeting separates from the sign backing, which would be cause for rejection and replacement at no additional cost to the Contract. There shall also be a stainless steel washer between the nylon washer and the bolt head. D. Post Anchorage: 1. Within concrete median: Install Surface Mount Anchor and bolts as shown on Standard Detail Plate STR-36 E. Permanent Barricade: 1. Install at locations shown on Drawings and per Standard Detail Plate STR-32. 2. Barricades to span entire roadway. 3. If shown on Drawings or required by Engineer, attach Standard Detail Plate STR-31. 4. OM4-2 red on black sign. F. Provide traffic control to safely install signs and to safely guide traffic through the work area during installation. TRAFFIC SIGNS AND DEVICES © 2021 City of Cottage Grove, Minnesota 34 41 05 - 4 G. The bottom section of each sign post shall be mounted into the ground to a minimum depth of 3-1/2 feet. The lower section of the post shall be at least 30 inches above ground to allow for a 12 inch splice and a minimum clearance of 18 inches from the ground to the bottom of the top section of the post. The splice of the upper and lower section posts shall be made with 2 5/16 inch stainless steel bolts with nylon insert lock nuts placed in the top and bottom holes of the overlap splice. Where 2 or more single post signs are mounted side by side, they shall be reinforced laterally by at least 2 post sections, bolted at each post, and located approximately at the quarter points. FIELD QUALITY CONTROL H. All work shall conform to MnDOT Spec. 2564. 3.03CLEANING A.Clean any sign after installation if requested by the Engineer. END OF SECTION TRAFFIC SIGNS AND DEVICES © 2021 City of Cottage Grove, Minnesota 34 41 05 - 5 This Page Left Blank Intentionally