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Water Supply & Distribution Plan UpdateCity of cottage l April 26, 2005 Tf ater Supply and r)istribution Plan Update Page 4 c� • Locate replacement supply and storage sites originally planned for the drive -In theater site �� C '7 • Determine how to adjust PRV settings in the West Draw area • Determine need for a water tower in the Grove area V� • Determine size and location for connection between Pinehill Tower and the Grove Area c Task 6: Capital Improvement Plan A water utility must have a sound basis for planning the expansion of its water system. This is especially true now, with increasing regulations regarding property acquisition, public notification and construction. A sound Capital Improvement Plan (CIP) will enable Cottage Grove to have the required facilities in place when the need arises. We will prepare the CIP for the trunk water system and break it down in one -year increments through 2010, in five -year increments through 2025, and consider remaining improvements post -2025. Based on the best available projections from the City for population, land use, and water use, it will be linked to benchmark events to allow Cottage Grove to update the CIP easily. For example, wells and water towers will be tied to water use thresholds. Distribution system improvements will be linked to future development or to coincide with street reconstruction projects. Task 7: Economic Analysis The operation of a water utility must have a sound financial basis. The report will present planning -level cost estimates for all of the proposed trunk water system facilities. An estimate of the land required for wells, water towers, and water treatment will be provided so that the cost of each facility can include an estimated cost for land acquisition. These costs will be based on City provided land costs and included in the CIP described above. Based on the overall cost of the ultimate trunk water system, we will review the City's existing fee system and make recommendation for adjustments. Task S: Report and Presentation The Bonestroo report will include graphics and figures to clarify items discussed in the report. The information in the report will be organized for ease of access by various audiences. A clear, concise Executive Summary and Recommendations section will assist the City Council and the city staff to review this document. An appendix will contain technical information. This work consists of the following subtasks: Subtask 1: Draft Report for Staff Review — For several of the major tasks described above, technical memoranda will be prepared and submitted to Cottage Grove for review. Because the results of one task can affect others, technical memoranda on each task will be prepared as the task is completed. We will attend the following meetings with City staff: ?1'Ieetin = -- _ _ =. Goals Kick -off Meeting Review scope of grqject, obtain data Progress Meeting 1 Establish design population projections and ultimate water demands Meeting 2 Review existing system hydraulic analysis and well siting study preliminary results - Progress Progress Meeting 3 Review ultimate system analysis , - Progress Meeting 4 Review draft report, CIP, and economic analysis Cite of Cottage Grove Water Supply and Distribution Pian Update April 26, 2005 Page 5 A draft report for the entire study, including all applicable maps, figures, and appendices will be compiled and presented to city staff for review (at Progress Meeting 4). Subtask 2; Final Report — Following review by City Staff, we will prepare a final report and submit 25 copies to Cottage Grove. Costs We propose to complete the «'ater Supply and Distribution Plan Update for a lump sum of $39,775. The following is the estimated project budget by task. Task Cost 1. Project Initiation S 1.800 2. Water Use Review S 13 1 00 3. Well Field Review S 8,800 4. Water Treatment Evaluation S 1,800 5. Hydraulic Modeling S 8,100 6. Capital Improvement Plan S 1,600 7. Economic Analysis $ 1,500 8. Report 513,875 Reimbursables S 1,000 Total Water Plan Update 539,775 Additional services not addressed in this scope of work, such as additional meetings, East Ravine revie« and the NPDES non - degradation modifications, will be billed at the hourly rates previously agreed to in our contract with the City. We look fonvard to discussing this proposal with you. Please call me at (651) 604 -4911 after you have had a chance to revie «7 this information. Sincerely, BONESTROO, ROSENTE, ANDERLIK & ASSOCIATES, LNC. Tom Thompson Cc; Harry Taylor, Cin7 of Cottage Grove Les Burshten, City of Cottage Grove Mark D. Wallis, Project Engineer - Bonestroo Cottage Grove, MN 000048 - 05213 -0 East Ravine Population Projections Land Use Acres Res 1,643 -Attached 55 LID Res 398 MD Res 112 HD Res 56 Mixed Use 19 Commercial 103 �- Population Projections 2030 Met I gpcd or Demand Rate (gpm /acre) k Water Supply & Distribution Plan Land Use Acres Units /Acre 7/18/2005 People /Acre Population gpd /acre Ave. Day Max Day Peak Hr. (MGD) Agricultural 9:43 AM \ 2.7 8.1 0 gpcd or Demand Rate (gpm /acre) MDD, 0.00 Rural Res Units/A People /Unit People /Acre Population gpd /acre Ave. Day Max Day Peak Hr. (MGD) 0.84 LID Res 2.7 2.7 4,436 100 0.19 0.56 1.13 1.33 5.34 6 2.7 16.2 885 95 1.07 3.21 6.41 0.25 1.91 5.74 11.48 2.7 13.5 5,374 95 0.89 2.67 5.34 1.53 80 12 2.7 32.4 3,613 85 1.91 5.74 11.48 0.92 24 2.7 64.8 3,596 80 3.60 10.80 21.60 0.86 2,160 24 2.7 64.8 1.205 80 3.60 10.80 21.60 0.29 Golf Course Additional 19,110 Total 53.910 Additional 5.5 Total 18.9 2025 Population Projections 2030 Met I gpcd or Demand Rate (gpm /acre) MDD, Council Land Use Acres Units /Acre People /Unit People /Acre Population gpd /acre Ave. Day Max Day Peak Hr. (MGD) Agricultural 0 3 2.7 8.1 0 100 0.56 1.69 3.38 0.00 Rural Res 1,035 1 2.7 2.7 2,795 100 0.19 0.56 1.13 0.84 LID Res 915 5 2.7 13.5 12,353 95 0.89 2.67 5.34 3.52 MD Res 16 12 2.7 32.4 518 85 1.91 5.74 11.48 0.13 Mixed Use 0 24 2.7 64.8 0 80 3.60 10.80 21.60 0.00 Commercial 37 0.73 Commercial 71 1500 1.04 2.08 4.17 0.11 Industrial 430 0.21 Industrial 2,160 1500 1.04 2.08 4.17 1.29 Golf Course 0 6.48 Golf Course 335 500 0.35 0.69 1.39 0.00 0.35 2,433 0.34 Additional 15,665 Additional Additional 5.9 Additional 32.4 Total 69,575 Total 156,642 Total 24.8 2025 - Ultimate Population Projections 2030 Met I Demand Rate (gpm /acre) Council 2020 Comp gpcd or MDD, Land Use Acres Units /Acre People /Unit People /Acre Population gpd /acre Ave. Day Max Day Peak Hr. (MGD) Agricultural 2,660 3 2.7 8.1 21,546 100 0.56 1.69 3.38 6.46 Rural Res 9,815 1 2.7 2.7 26,501 100 0.19 0.56 1.13 7.95 LID Res 2,540 5 2.7 13.5 34,290 95 0.89 2.67 5.34 9.77 MD Res 52 12 2.7 32.4 1,685 85 1.91 5.74 11.48 0.43 Mixed Use 47 24 2.7 64.8 3,046 80 3.60 10.80 21.60 0.73 Commercial 71 1500 1.04 2.08 4.17 0.21 Industrial 2,160 1500 1.04 2.08 4.17 6.48 Golf Course 335 500 0.35 0.69 1.39 0.34 17,680 Additional 87,067 Additional 32.4 Total 156,642 Total 57.2 Population Max Day Demand Existing 34,800 Existing 13.4 MGD 385 gpcd East Ravine 19,110 East Ravine 5.5 MGD 288 gpcd 2025 15,665 2025 5.9 MGD 376 gpcd Ultimate 87,067 Ultimate 32.4 MGD 372 gpcd Total = 156,642 Total = 57.2 MGD 365 gpcd 1 Includes potential service to a portion of Woodbury 2 Includes service to Grey Cloud Island and potential service to a portion of Woodbury 0 denotes assumed values MDD Peaking Factors Res. 3 x ADD C/I 2 x ADD Filename: DemandAllocation.xls Page 1 of 1 Sheet: Future Land Use Population Projections 2030 Met I Max Day Council 2020 Comp City Served Demand Year Blueprint Plan Projections (MGD) 2005 35,785 34,800 13.4 2010 37,000 38,870 2020 43,900 44,866 2025 69,575 24.8 2030 53,000 Ultimate 156,650 2 57.2 1 Includes potential service to a portion of Woodbury 2 Includes service to Grey Cloud Island and potential service to a portion of Woodbury 0 denotes assumed values MDD Peaking Factors Res. 3 x ADD C/I 2 x ADD Filename: DemandAllocation.xls Page 1 of 1 Sheet: Future Land Use