HomeMy WebLinkAbout4.3 Sanitary Sewer Extension - Certified Site Soil Boring Approval
TO: Economic Development Authority
FROM: Matt Wolf, Assistant to the City Administrator
DATE: December 4, 2020
RE: Sanitary Sewer Extension - Certified Site Soil Boring Approval
Background
As part of the City of Cottage Grove 2021-2025 Capital Improvement Program (CIP), that was
approved by City Council at their December 2, 2020 meeting by a vote of 5-to-0, a trunk sanitary
th
line is being installed south of 100 Street in the spring of 2021. The installation of the sanitary
th
line will bring development to the land south of 100 Street allowing for the expansion of the
Cottage Grove Business Park. As part of the work to install the sanitary line the City of Cottage
Grove is doing the due diligence of conducting soil borings along the line to determine geological
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conditions. To best prepare the land south of 100 Street and east of Ideal Avenue for future
development the City would like to certify the 116 acres owned by Gene and Louise Smallidge for
shovel ready development through Xcel Energy and the Minnesota Department of Employment
and Economic Development (DEED).
Figure 1 Proposed Trunk Sanitary Line extension as part of the Cottage Grove CIP 2021-2025 Plan to be constructed in 2021.
Economic Development Authority
Sanitary Sewer Extension - Certified Site Soil Boring Approval
December 4, 2020
Page 2 of 3
Discussion
Over the course of the last two years the larger undeveloped sites in the Business Park that
were certified through DEED and Xcel Energy have developed (i.e. North Start Sheets and
Renewal by Andersen Expansion). As a result, currently the largest certified sites that in the
City are the 23-acre site owned by Hillcrest Development in the northwest corner of the
Business Park and the 19-acre site owned by WAG Farms, which is west of Renewal by
Andersen. In the past year the City has received two Requests for Information/Proposals from
businesses that have been looking to develop 50+ acre sites in the Minneapolis-St. Paul area.
Although the City of Cottage Grove submitted sites to them for consideration, they were not
shovel ready certified which placed them at a competitive disadvantage. Further these
businesses although harder to attract then existing businesses in the Business Park, often come
with larger buildings and a larger employee count.
In order to certify a site shovel ready, the sites must have geotechnical work done throughout
the site, which shows the site having stable soils for development. To complete the
geotechnical work a series of soil borings are done by casting a “net” across the site to identify
the type of soil a developer would be working with if they developed the land. As part of the
2021-2025 CIP Plan a trunk sanitary line will be constructed from Ideal Avenue to the MCES
Sanitary Interceptor Line that runs on 3M’s property (see Figure 1). For that project the City’s
consultant, Bolton & Menk, is working with American Engineering Testing, Inc. to complete soil
borings along the path of the
proposed sanitary line. In
order to receive some cost
savings and increase logistic
efficiencies it is being
proposed that the soil borings,
to have the site certified, be
completed at the same time.
The proposed shovel ready
site is west of Ideal Avenue
and is comprised of two 58-
acre parcels of land. All the
land is owned by Gene and
Louise Smallidge who are
currently marketing the land
for development. If approved
the soil borings throughout the
site (see Figure 2) would be
completed in late December of
2020 or January of 2021. The
total cost to complete the soil
borings through American
Engineering Testing, Inc. is
$32,551 which would be paid
Figure 2 Map of soil boring locations for proposed site to be certified shovel-
through the EDA Trust Fund.
ready certified.
Recommendation
Economic Development Authority
Sanitary Sewer Extension - Certified Site Soil Boring Approval
December 4, 2020
Page 3 of 3
Authorize the payment of $32,551 from the EDA Trust Fund to American Engineering Testing, Inc
for the completion of soil borings to have two 58-acre sites shovel ready certified for future
development.
Attachments
A. Soil Boring Locations
B. Preliminary Land Development Exploration Proposal – American Engineering Testing,
Inc.
November 19,2020
Bolton & Menk, Inc.
2035 County Road D East
Maplewood, MN 55109
Attn:Mike Boex, PE
Michael.boex@bolton-menk.com
Re:Proposal for Preliminary GeotechnicalExploration
Smallidge Property
th
Ideal Avenue and 110Street
Cottage Grove, Minnesota
AET Proposal No. 28-20380
Dear Mr. Boex:
American Engineering Testing (AET) ispleased to submit aproposaltoBolton & Menk (BMI)
for preliminary geotechnicalservices for this project.In this proposal, we present our
understanding of the project, an outline of the scope of services we are to provide, a fee schedule,
and an estimate of charges for our services.
PROJECT INFORMATION
We understand you are proposing the development of existing farmland for light industrial
usage. At this stage, no information on location of proposed structures is known. Only
preliminary recommendations are being requested at this time.
SCOPE OF SERVICES
Field Exploration
Based on discussions with you, youhaveproposedthe following scope of services:
Arrange clearance of underground public utilities.
Perform 25standard penetration test (SPT) borings at locations decided on by BMIto
depths ranging between14.5 feet and 51feetfor a total drilling depth of695feet.
Perform bedrock coring at select boring locations, after review of the initial borings with
you,and if bedrock is encountered, using an NQ (1.875” diameter) coring bit.
We understand BMI will stake the boring locations and will provide elevations at the drilled boring
locations. We plan to perform approximately half of the proposed borings using traditional SPT
sampling methods to the planned drilling depth or refusal, whichever occurs first. At that time, we
will discuss the results with you.After review, the remaining borings will be drilled and sampled
and could be extended by coring methods if bedrock is encountered. We will review the number of
cores and length of coring with you prior to proceeding.
550 Cleveland Avenue NorthSt. Paul, MN 55114
home651-659-9001Toll Free 800-972-6364Fax 651-659-1379www.amengtest.comAA/EEO
This document shall not be reproduced, except in full, without written approval from American Engineering Testing, Inc.
Bolton & Menk
AET Proposal No 28-20380
November 19, 2020
Page 2of 5
Before we drill, we will contact Gopher State One Callto locate public underground utilities.
Gopher State One Call does not currently charge for this service, but they will not locate private
underground utilities or structures. Examples of private utilities include, but are not limited to,
propane lines, sewer laterals, sprinkler systems, site lighting, and electric and data lines between
buildings. Gopher State One Call states that the property owner is responsible for locating
all private underground utilities and structures.We request that you please coordinate this
activity with the owner and AET prior to AET beginning any subsurface exploration. Also,
please provide us with any maps, plans and records showing the location of all private utilities
and structures.
We can provide you with names and contact information for private utility locators. These
companies usually charge a fee for their services. Also, please note that private locators cannot
guarantee that all private utilities will be located. For the private locator to be accurate and
effective, the property owner must provide maps, plans and records showing the location of all
private utilities and structures. The property owner must also provide a knowledgeable site
representative to meet with the private locator and AET personnel.
AET shall be entitled to rely upon the accuracy of all location information supplied by any
source. We will not be responsible for any damages to underground utilities or structures not
located or incorrectly identified by the property owner, any maps, plans or records, or public or
private utility locator providers.
We will drill the borings using hollow stem augersor by rotary mud drilling,and sampling by the
split-barrel method (ASTM D1586). Our crew will keep field logs noting the methods of drilling
and sampling, the Standard Penetration Values (N-values, “blows per foot”), preliminary soil
classification, and observed groundwater levels. We will collect samples at 2½-foot intervals to
15 feet and5-foot intervals thereafter.Representativeportions of recovered samples will be
sealed in jars to prevent moisture loss and submitted to our laboratory for review, testing and
final classification.
We will backfill the boreholesto comply with State requirements.Even after backfilling, some
sloughing of the backfill may occur, resulting in a potential tripping hazard to pedestrians. We
assumethe ownerwill backfill and repair any boreholes that may slough after our exploration is
complete. AET cannot accept any liability associated with pedestrianinjury.We assume that the site
is readily accessible for our ATVdrill rig. Snow plowing to access the site will be billed as an extra
charge.
Laboratory Testing
We will initiate routine laboratory testing by reviewing each recovered soil sample to assess the
major and minor soil components, while also noting the color, degree of saturation, and lenses or
seams in the samples.We will perform moisture content tests on select samples. We also propose
to perform additional laboratory testing including Atterberg limits and/or sieve analyses, based
on the soil types encountered.
American Engineering Testing, Inc.
Bolton & Menk
AET Proposal No 28-20380
November 19, 2020
Page 3of 5
On completion of testing, we will visually/manually classify each sample on the basis of texture
and plasticity in accordance with the Unified Soil Classification System and AASHTO system
and prepare the boring logs.
Report
We will prepare a report in which we will presentlogs of the test borings, laboratory test results,
a review of engineering properties of the on-site soils, and our preliminary geotechnical
engineering opinions and recommendations regarding the following:
Grading procedures to prepare for the site for potential building areas,including
comments on the suitability of the on-site soils for reuse as fill.
Foundation types and depths, including estimated allowable soil bearing capacity and
estimates of foundation settlement.
Backfilling procedures, including material types and compaction requirements.
Estimated R-value for bituminous pavement design.
Hydrologic soil group and estimated soil infiltration rates based on the soil types
encountered throughout the site, the laboratory index testing performed, and the
Minnesota Stormwater Manual.
Comments on other items which may affect final performance or constructability, such as
frost heave and drainage considerations.
It should be understood that these recommendations are preliminary and should be reviewed for
each specific structure as they are planned at the site. Additional geotechnical exploration should
be considered at that time.
MINNESOTA DEPARTMENTOF HEALTH FEES
Effective July 1, 2019, the Minnesota Department of Health (MDH) has changed the borehole
sealing and notification requirements. For sites where borings are drilled to a depth of 15 feet or
deeper, all licensed drilling companies are required by law to grout the boreholes upon
completion. For borings 25 feet in depth or deeper all licensed drilling companies must submit
written notification to the MDH prior to drilling along with a fee of $75. Projects that span
multiple properties will require multiple notifications. The MDH also requires that a Sealing
Record be submitted to the MDH, with a copy to you, after the borings are completed. The above
fee estimate for our geotechnical services includes the MDH fee for the proposed scope of
drilling; however, because final boring depths can change, for example, due to possible
unanticipated poor soil conditions, the final MDH fee (including an administrative charge of $65
per notification) will be added, if necessary, to our final invoice to you.
The MDH Notification and Sealing Record requires the Property Owner name and mailing
address (the Property Owner will also receive a copy of the Sealing Record). Please provide this
information on the following page.
American Engineering Testing, Inc.
Bolton & Menk
AET Proposal No 28-20380
November 19, 2020
Page 4of 5
Property Owner’s name/company nameand mailing address:
Eugene and Louise Smallidge
10992 Point Douglas Dr S
Hastings, MN 55033
SCHEDULE
Weather permitting and based on our current backlog, we anticipate the field work can begin
within twoto three weeks following authorization to proceed. The drilling field services will take
approximately7daysto perform. Laboratory testing and draft boring logs can be completed
about one week after completion of the field services. We anticipate the geotechnical report can
be prepared within about twoweeksaftercompletion of the lab work.
FEES
Our fees for services will be charged on a time and materials basis in accordance with the fee
estimateshow below.
Scope ItemQuantityUnitUnit RateTotal
Utility Meet1Each$350$350
Initial Mobilization1Lump$450$450
Additional Mobilization6Each$250$1,500
SPT Soil Boring Setup25Boring$75$1,875
SPT Soil Boring
Drilling (includes lab 696Foot$32$22,272
logging and boring log)
Rock Coring BoringBoring$750
Rock CoringFoot$90
Engineer II30Hour$154$4,620
Senior Engineer5Hour$176$880
MN DOH Permit1Each$140$140
Sieve Analysis2Each$112$224
Atterberg Limits2Each$120$240
Total$32,551
If bedrock coring is requested, we propose a fee of $750 perboring to switch to bedrock coring
plus a per-footage fee of $90. Additional mobilizations will be needed to complete the bedrock
coring. We propose an additional fee of $250 per mobilization beyond 7 days.
In the event the scope of our services needs tobe revised (for example, additional or deeper
borings, or additional field or laboratory testing), we will review such scope adjustments and the
associated fees with you and receive your approval before proceeding. Additional services will
be charged in accordance with the attached fee schedule. Our fees will be in effect until January
31, 2021, after which they will be subjected to review and possible escalation.
American Engineering Testing, Inc.
Bolton & Menk
AET Proposal No 28-20380
November 19, 2020
Page 5of 5
ENVIRONMENTAL CONCERNS
This proposal is presented for engineering services to evaluate the structural properties of the soil
at the specified site. This proposal does not cover an environmental assessment of the site or
environmental testing of the soil or groundwater. If you wish to have us provide these additional
services, please contact us.
TERMS AND CONDITIONS
The services will be provided per the Terms and Conditions between AET and Bolton & Menk
contained in the Amendment No. 3 Master Subconsultant Agreement for Professional Services,
effective January 1, 2019.
ACCEPTANCE
AET requests written acceptance of this proposal in the Proposal Acceptance box below, but the
following actions shall constitute your acceptance of this proposal together with the Terms and
Conditions and Amendments: 1) issuing an authorizing purchase order for any of the Services
described above, 2) authorizing AET’s presence on site, or 3) written or electronic notification
for AET to proceed with any of the Services described in this proposal. Please indicate your
acceptance of this proposal by signing below and returning a copy to us. When you accept this
proposal, you represent that you are authorized to accept on behalf of the Client.
AET appreciates the opportunity to provide this service for youand looks forward to working
with you on this project. If you have questions or need additional information, please contact us.
Sincerely,
American Engineering Testing, Inc.
Thomas Evans, PE Jacob O. Michalowski, PE
Engineer II Senior Engineer
Phone: (701) 690-9732 Phone: (651)-283-2481
tevans@amengtest.comjmichalowski@amengtest.com
Attachments: 2020 Geotechnical Fee Schedule
AET PROPOSAL No.: 28-20380ACCEPTANCE AND AUTHORIZATION
Signature:____________________________________Date:______________________
Typed/Printed Name:___________________________________________________________
Title: _______________________________________________________________________
Company:____________________________________________________________________
American Engineering Testing, Inc.
2020G EOTECHNICAL F EE S CHEDULE
I.Personnel Hourly RatesF.Bit Wear-Rock Coring
A.Administrative Assistant71.00/hr.1.Diamond Bit -Sedimentary Rock
B.Engr. or Env. Technician I 78.00/hr.a)B, NQ13.00/foot
C.Engr. or Env. Technician II 91.00/hr.b)HQ15.00/foot
D.Drill Technician/Geo Lab Technician104.00/hr.2.Diamond Bit -Metamorphic & Igneous
E.Engr. or Env. Technician III112.00/hr.a)B, NQ21.00/foot
F.Engineering Assistant121.00/hr.b)HQ24.00/foot
G.Engineer I/Geologist I134.00/hr.IV.Laboratory Tests of Soil
H.Engineer II/Geologist II/Sr. Engr. Assistant154.00/hr.A.Water Content hourly
I.Senior Engineer/Geologist176.00/hr.B.Dry Density (includes water content)60.00/test
J.Principal Engineer/Geologist215.00/hr.C.Atterberg Limits (ASTM:D4318)
K.Principal of Firm235.00/hr.1.Plasticity Index120.00/test
2.Liquid Limit or Plastic LimitSeparately105.00/test
II.Vehicle MileageD.Sieve Analysis (includes -#200)112.00/test
A.Personal Automobile/Truck0.75/mileE.Hydrometer Analysis (sieve included)210.00/test
B.Auxiliary TruckVehicle1.00/mileF.Thermal Resistivityw/Proctor (ASTM:D5334)
C. Truck with Coring, FWD, or GPREquipment 1.10/mile1.As Received and Oven Dried (2 pts)1000.00/test
D. Truck with Warning Sign/Crash Trailer 1.20/mile2.Dry Out Curve (4 pts) 1245.00/test
E.1-ton Truck with Drill Rig1.20/mileG.Electrical Resistivity(ASTM:G57-Soil Box)107.00/test
F.1½to 2½-ton Truck with Drill Rig1.35/mileH.Corrosion/Concrete Attack Series* price upon request
G.CPT Truck Rig (20-ton push capacity)1.60/mileI.Consolidation (up to 32 tsf)
H.Tractor/Lowboy Trailer1.80/mile1.With P-e curves only 500.00/test
2.With P-e curves,time curves 620.00/test
III.Equipment Rental
J.Unconfined Compression(incl. wc/density)105.00/test
A.Drill Rig RentalK.HandPenetrometer 15.00/test
1.RotaryDrill on 1-ton Truck80.00/hr.L.Organic Content of Soil 75.00/test
2.Rotary Drill on 1½ to 2½-ton Truck90.00/hr.M.Topsoil Borrow Test (Mn/DOT 3877)300.00/test
3.Rotary Drill on All-Terrain Vehicle123.00/hr.N.R-value (Hveem Stabilometer)400.00/test
4.Portable, Non-rotary Rig90.00/hr.O.California Bearing Ratio
B.Auxiliary/SpecialtyVehicle Rental1.Granular640.00/test
1. Auxiliary Truck Vehicle 20.00/hr.2.Cohesive730.00/test
2. Truck with Warning Sign/Crash Trailer44.00/hr.P.Proctor Tests(Methods A or B)
3. Truck with Coring Equipment 61.00/hr.1.Standard145.00/test
C.Cone (CPT) Rig/Equipment Rental2.Modified155.00/test
1.CPT Rig (Truck or ATV) 159.00/hr. *includes pH, chloride ion, soluble sulfates, sulfides,
2.Electronic Cone w/Computer49.00/hr. redox potential (resistivity not included).
3.Soil Sampler8.00/hr.
V.Expenses
4.Water Sampler22.00/hr.
A.Direct Project Expenses: includes out-of-Cost + 15%
D.Miscellaneous Equipment Rental
1.Field Vane Shear335.00/daytown per diem; plowing & towing; special
2.Field Electrical Resistivity 265.00/daymaterials & supplies; special travel,
3.Field Seismic Shear Wave(ReMi) 435.00/daytransportation & freight; subcontracted
4.Inclinometer Reading Equipment350.00/dayservices, and miscellaneous costs
5.ElectronicTransducer Reading180.00/dayB.Equipment Replacement (when abandonmentCost
6.Bore Hole Permeabilityis more feasible than recovery)
a.Open End Casing Method140.00/dayC.Equipment Recovery (when required byCost + 15%
b.HQ Wireline Packer350.00/dayregulatory agencies or project specifications)
7.Borehole Pressuremeter75.00/hr.
8.Iowa Borehole Shear Tester335.00/dayThe rates presented are portal-to-portal with vehicle mileage, expenses
9.Double Ring Infiltrometer275.00/dayand equipment rentals being additional.
10.GPS Mapping System 17.00/hr.
11.Pile Driving Analyzer (PDA)750.00/dayOvertime for personnel charged at above cost plus 25% for over 8 hours
12.Calibrated SPT Rod 230.00/dayper day or Saturday; and at above cost plus 50% for Sundays or Holidays.
13.Pile Integrity Test (PIT) 360.00/dayHazardous work charged at an additional 25%. Night time shift work will
E.Geotechnical Software Rentalinclude a premium charge of $30.00 per person per shift.
1.Geo Studio Finite Element85.00/hr.
2.CAPWAP50.00/hr.
3.AutoCAD or Microstation40.00/hr.
4.Wave Equation(WEAP)30.00/hr.
5.LPILE or GROUP30.00/hr.
6.Slope Stability(ReSSA)30.00/hr.
7.Stabilized Earth Slopes & Walls30.00/hr.
8.Settlement (FoSSA) 30.00/hr.
01DPM021.15(1/20)AMERICAN ENGINEERING TESTING, INC.