HomeMy WebLinkAbout10A - Municipal Water Well #10
MEETING DATE:
AGENDA #:
PREPARED BY:
AGENDA ITEM:
DISCUSSION:
16200 Eagle Creek Avenue S.E,
Prior Lake, MN 55372-1714
CITY COUNCIL AGENDA REPORT
JANUARY 17, 2006
10A
STEVE ALBRECHT, DIRECTOR OF PUBLIC WORKS
CONSIDER APPROVAL OF A RESOLUTION AUTHORIZING THE MAYOR
AND CITY MANAGER TO EXECUTE THE CITY'S STANDARD
PROFESSIONAL SERVICES AGREEMENT WITH BARR ENGINEERING
FOR PUMP TESTING RELATED TO WELL NO. 10
I ntrod uction
The purpose of this agenda item is for the City Council to authorize a standard
professional services agreement with Barr Engineering for groundwater and
pump test analysis services related to Well No. 10.
Historv
The City of Prior lake currently operates five municipal wells to provide water
to the community. In the fall of 2005 the City began construction of Wells 8
and 9. Wells 1 and 2 have been abandoned and are no longer used by the
City. The City pumped approximately 705,000,000 gallons of water in 2005.
In order to continue to meet community demands, Well No.1 0 is needed to
provide adequate water supply for on-going development within the City. The
costs for this project are paid by the Trunk Reserve Funds and not through
taxes.
The City of Prior lake pumps the majority of our water from the Jordan
Aquifer. In northern Scott County the Jordan Aquifer is linked to the Savage
Fen. The Savage Fen is a Calcareous Fen or wetland that has very unique
plant species as it is fed by ground water from the Jordan Aquifer. For this
reason the Department of Natural Resources (DNR) has implemented strict
policies regarding withdrawal of water from this aquifer in northern Scott
County. The City of Prior lake is regulated by these rules and must complete
a detailed ground water modeling to demonstrate that proposed future wells
will not impact the fen negatively. In the fall of 2005 City Staff met with DNR
staff regarding future wells in Prior lake. It was determined that prior to
construction of Well No. 10 or any future wells by the City that the City will
need to provide detailed groundwater modeling and pumping test information
to the DNR.
Current Circumstances
The City included $735,000.00 in the 2006-2010 Capital Improvement
Program (CIP) for the construction of Well No. 10 and related studies.
Working with Barr Engineering the City has agreed upon the required
procedure to develop a long term well plan for the City. It is the City's goal to
work out a long term agreement for future well placement with the DNR similar
to the agreement Savage currently has.
The proposed work plan for Well No.1 0 includes the following phases:
www.cityofpriorlake.com
Phone 952.447.4230 / Fax 952,447.4245
A) Existing well fen impact and pumping test (January 2006 - April 2006):
$44,800.00
B) Installation of new test wells (May 2006 - June 2006): $50,000.00
C) Well Plan Agreement with DNR (July 2006 - August 2006):
$15,000.00
D) Construction of Municipal Well NO.1 0, well house, raw water lines
(September 2006 - June 2007): $625,200.00
ISSUES:
The City of Prior Lake has unique geology in that a bedrock valley cuts across
the City approximately along the lake. This bedrock valley limits the use of the
Jordan Aquifer. The exact effects of the lake as a barrier to impacts on the
Savage Fen are unknown at this time. Prior to construction of any additional
wells the City must determine the following:
1) What impacts do wells located on the west side of the lake have on the
Fen?
2) What is an acceptable method for modeling the impacts?
3) What is the maximum permissible level of impact for construction of
new wells?
4) Where will the wells required for the City of Prior Lakes ultimate growth
be built?
It should be noted that in the previous CIP Well No. 10 was preliminarily
located in the Cardinal Ridge area. The final location of the well will be
dependant on the preliminary studies and the capacities of Wells No.8 and
NO.9 currently under construction.
FINANCIAL
IMPACT:
The City of Prior Lake included $735,000 in the CIP in 2006 for Municipal Well
No. 10. This budget amount included money for investigative work required
prior to construction of the well and distribution system. The proposed budget
for Phase A of the Well No. 10 work plan is $44,800.00. Because this well and
the required studies are needed for future development this project is funded
from the Trunk Reserve Fund. The City currently collects $5,500.00Iacre from
developers for construction of water system improvements needed due to
development. The cost of Well NO.1 0 will be funded solely by the money
collected from new developments and will not receive and funding from the
general fund. The funding for Well NO.1 0 is currently available in the Trunk
Reserve Fund.
ALTERNATIVES:
The alternatives are as follows:
1. Approve a resolution authorizing the Mayor and City Manager to
execute the City of Prior Lake's Standard Professional Services
Agreement for Phase A of the Well NO.1 0 work plan in the amount of
$44,800.00 with Barr Engineering Company.
2. Table this agenda item for a speCific reason.
3. Deny this agenda item for a speCific reason and provide staff with
direction.
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RECOMMENDED
MOTION:
Staff recommends alternative number 1.
L
Boyles, City Manager
16200 Eagle Creek Avenue S.E.
Prior Lake, MN 55372-1714
RESOLUTION 06-xx
A RESOLUTION AUTHORIZING THE MAYOR AND CITY MANAGER TO EXECUTE THE CITY'S
STANDARD PROFESSIONAL SERVICES AGREEMENT WITH BARR ENGINEERING FOR PUMP
TESTING RELATED TO WELL NO. 10
Motion By:
Second By:
WHEREAS, Well No. 10 is needed to provide water for new development; and
WHEREAS, The City collects trunk water acreage charges from developments as part of the
subdivision platting process. Because Well NO.1 0 is necessitated by new
development it will be funded from the Trunk Water Acreage Charges.
WHEREAS, Prior to construction of Well No. 10 the DNR will require that the City provide evidence
that Well NO.1 0 will not negatively impact the Savage Fen; and
WHEREAS, It is in the City's best interest to work with the DNR to reach a long term water supply
agreement thereby providing a viable water source into the future; and
WHEREAS, Barr Engineering is the City's groundwater supply consultant; and
WHEREAS, Barr Engineering has provided a proposal to provide the necessary services to
complete Phase A of the Well No.1 0 project on a time and materials basis for a price
of $44,800.00.
NOW THEREFORE, BE IT HEREBY RESOLVED BY THE CITY COUNCIL OF PRIOR LAKE,
MINNESOTA as follows:
1. The recitals set forth above are incorporated herein.
2. The Mayor and City Manager are authorized to execute the Standard Professional Services
Agreement with Barr Engineering for Phase A of the Well No. 10 project.
3. The costs associated with phase A shall be paid for from the Trunk Reserve Fund.
PASSED AND ADOPTED THIS 1ih DAY OF JANUARY, 2006.
YES
NO
Haugen Haugen
Dornbush Dornbush
Erickson Erickson
LeMair LeMair
Millar Millar
Frank Boyles, City Manager
'WJiW:HWbfpriorlake.com
Phone 952.447.4230 / Fax 952,447.4245
STANDARD AGREEMENT FOR PROFESSIONAL SERVICES
THIS AGREEMENT is made on the 17th day of January, 2006, between the City of Prior Lake,
Minnesota (hereinafter "City"), whose business address is 16200 Eagle Creek Avenue S.E., Prior Lake,
MN 55372-1714, and Barr Engineering Company, a Minnesota corporation (hereinafter "Consultant")
whose business address is 4700 West 77th Street, Minneapolis, MN 55435.
PRELIMINARY STATEMENT
The City has adopted a policy regarding the selection and hiring of consultants to provide a variety of
professional services for City projects. That policy requires that persons, firms or corporations providing
such services enter into written agreements with the City. The purpose of this agreement is to set forth
the terms and conditions for the provision of groundwater testing and modeling professional services by
Consultant for preparation of the City's Comprehensive Sanitary Sewer Plan hereinafter referred to as the
"Work",
The City and Consultant agree as follows:
1. Scope of Work. The Consultant agrees to provide the professional services shown in Exhibit "A"
in connection with the Work.
2. Time for Performance of Services. The Consultant shall perform the services described in
Exhibit A within the following timeframe unless otherwise agreed upon in writing:
3. Compensation for Services. City agrees to pay the Consultant $44,800.00 for the services as
described in Paragraph 1 (and Exhibit A).
A. Any changes in the scope of the work which may result in the compensation due the
Consultant shall require prior written approval by an authorized representative of the City
or by the City Council. The City will not pay additional compensation for services that do
not have prior written authorization.
B. Special Consultants may be utilized by the Consultant when required by the complex or
specialized nature of the Project and when authorized in writing by the City.
C. City agrees to pay Consultant for extra services by the Consultant or Special Consultants
when authorized in writing by the City.
4. The City agrees to provide the Consultant with the complete information concerning the Scope of
the Work and to perform the following services:
A. Access to the Area. Depending on the nature of the Work, Consultant may from time to
time require access to public and private lands or property. As may be necessary the City
shall obtain access to and make all provisions for the Consultant to enter upon public and
private lands or property as required for the Consultant to perform such services
necessary to complete the Work.
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B. Consideration of the Consultant's Work. The City shall give thorough consideration to all
reports, sketches, estimates, drawings, and other documents presented by the Consultant,
and shall inform the Consultant of all decisions required of City within a reasonable time so
as not to delay the work of the Consultant.
C. Standards. The City shall furnish the Consultant with a copy of any standard of criteria,
including but not limited to, design and construction standards they may require in the
preparation of the report for the Project.
D. Owner's Representative. A person shall be appointed to act as the City's representative
with respect to the work to be performed under this Agreement. He or she shall have
complete authority to transmit instructions, receive information, interpret, and define the
City's policy and decisions with respect to the services provided or materials, equipment,
elements and systems pertinent to the work covered by this Agreement.
5. Method of Payment. The Consultant shall submit to the City, on a monthly basis, itemized bills
for professional services performed under Section 4 of this Agreement. Bills submitted shall be
paid in the same manner as other claims made to the City.
A. Proaress Pavment. For work reimbursed on an hourly basis, the Consultant shall indicate
for each employee, his or her name, job title, the number of hours worked, rate of pay for
each employee, a computation of amounts due for each employee, and the total amount
due for each project task. Consultant shall verify all statement submitted for payment in
compliance with Minnesota Statutes Sections 471.38 and 471.391. For reimbursable
expenses, if permitted in Exhibit A, the Consultant shall provide such documentation as
reasonably required by the City.
B. Abandoned or Suspended Work. If any work performed by the Consultant is abandoned
or suspended in whole or in part by the City, the Consultant shall be paid for any services
performed on account of it prior to receipt of written notice from the City of such
abandonment or suspension, all as shown on Exhibit A attached hereto and incorporated
herein by reference.
C. Pavments for the Consultant's Reimbursable Costs. The Consultant shall be reimbursed
for the work of special consultants, as described in Section 3B, and for other items when
authorized in writing by the City. Such items shall include: transportation of principals and
employees on special trips to the Project or to other locations, materials and supplies, and
AutoCAD as required to expedite the work, and reproduction of reports.
7. Project Manager and Staffing. The Consultant has designated Brian leMon to serve on the
Project. He or she shall be assisted by other staff members as necessary to facilitate the
completion of the Project in accordance with the terms established herein. Consultant may not
remove or replace Brian leMon from the Project without the approval of the City.
8. Standard of Care. All Work performed pursuant to this Agreement shall be in accordance with
the standard of care in Scott County, Minnesota for professional services of the like kind..
9.
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the Consultant under this Agreement which the City requests to be kept confidential shall not be
made available to any individual or organization without the City's prior written approval. All
finished or unfinished documents, data, studies, surveys, drawings, maps, models, photographs,
and reports prepared by the Consultant shall become the property of the City upon termination of
this Agreement, but Consultant may retain copies of such documents as records of the services
provided.
10. Term. The term of this Agreement shall be from January 17, 2006 through July 31 , 2006 the date
of signature by the parties notwithstanding. This Agreement may be extended upon the written
mutual consent of the parties for such additional period as they deem appropriate, and upon the
terms and conditions as herein stated.
11. Termination. This Agreement may be terminated by either party by seven (7) days' written notice
delivered to the other party at the address written above. Upon termination under this provision if
there is no fault of the Consultant, the Consultant shall be paid for services rendered and
reimbursable expenses until the effective date of termination. If however, the City terminates the
Agreement because of the Consultant has failed to perform in accordance with this Agreement,
no further payment shall be made to the Consultant, and the City may retain another contractor to
undertake or complete the work identified in Paragraph 1. If as a result, the City incurs total costs
for the work (including payments to both the present contractor and a future contractor) which
exceed a maximum Agreement amount, if any, specified under Paragraph 3, then the Consultant
shall be responsible for the difference between the cost actually incurred and the Agreement
amount.
12. Subcontractor. The Consultant shall not enter into subcontracts for services provided under this
Agreement except as noted in the Scope of Work, without the express written consent of the City.
The Consultant shall pay any subcontractor involved in the performance of this Agreement within
the ten (10) days of the Consultant's receipt of payment by the City for undisputed services
provided by the subcontractor. If the Consultant fails within that time to pay the subcontractor any
undisputed amount for which the Consultant has received payment by the City, the Consultant
shall pay interest to the subcontractor on the unpaid amount at the rate of 1.5 percent per month
or any part of a month. The minimum monthly interest penalty payment for an unpaid balance of
$100 or more is $10. For an unpaid balance of less than $100, the Consultant shall pay the actual
interest penalty due to the subcontractor. A subcontractor who prevails in a civil action to collect
interest penalties from the Consultant shall be awarded its costs and disbursements, including
attorney's fees, incurred in bringing the action.
13. Independent Consultant. At all times and for all purposes herein, the Consultant is an
independent contractor and not an employee of the City. No statement herein shall be construed
so as to find the Consultant an employee of the City.
14. Non-Discrimination. During the performance of this Agreement, the Consultant shall not
discriminate against any employee or applicants for employment because of race, color, creed,
religion, national origin, sex, marital status, status with regard to public assistance, disability, or
age. The Consultant shall post in places available to employees and applicants for employment,
notices setting forth the provision of this non-discrimination clause and stating that all qualified
applicants will receive consideration for employment. The Consultant shall incorporate the
foregoing requirements of this paragraph in all of its subcontracts for program work, and will
require all of its subcontractors for such work to incorporate such requirements in all subcontracts
for program work.
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15. Assignment. Neither party shall assign this Agreement, nor any interest arising herein, without
the written consent of the other party.
16. Services Not Provided For. No claim for services furnished by the Consultant not specifically
provided for herein shall be honored by the City.
17. Severability. The provisions of this Agreement are severable. If any portion hereof is, for any
reason, held by a court of competent jurisdiction to be contrary to law, such decision shall not
affect the remaining provisions of this Agreement.
18. Entire Agreement. The entire agreement of the parties is contained herein. This Agreement
supersedes all oral agreements and negotiations between the parties relating to the subject
matter hereof as well as any previous agreements presently in effect between the parties relating
to the subject matter hereof. Any alterations, amendments, deletions, or waivers of the provisions
of this Agreement shall be valid only when expressed in writing and duly signed by the parties,
unless otherwise provided herein.
19. Compliance with Laws and Regulations. In providing services hereunder, the Consultant shall
abide by all statutes, ordinances, rules and regulations pertaining to the provisions of services to
be provided. The Consultant and City, together with their respective agents and employees, agree
to abide by the provisions of the Minnesota Data Practices Act, Minnesota Statutes Section 13, as
amended, and Minnesota Rules promulgated pursuant to Chapter 13. Any violation of statutes,
ordinances, rules and regulations pertaining to the services to be provided shall constitute a
material breach of this Agreement and entitle the City to immediately terminate this Agreement.
20. Waiver. Any waiver by either party of a breach of any provisions of this Agreement shall not
affect, in any respect, the validity of the remainder of this Agreement.
21. Indemnification. Consultant agrees to defend, indemnify and hold the City, its officers, and
employees harmless from any liability, claims, damages, costs, judgments, or expenses, including
reasonable attorney's fees, resulting directly or indirectly from a negligent act or omission
(including without limitation professional errors or omissions) of the Consultant, its agents,
employees, or subcontractors in the performance of the services provided by this Agreement and
against all losses by reason of the failure of said Consultant fully to perform, in any respect, all
obligations under this Agreement.
22. Insurance.
A. General Liabilitv. During the term of this Agreement, Consultant shall maintain a general
liability insurance policy with limits of at least $600,000 for each person, and each
occurrence, for both personal injury and property damage. This policy shall name the City
as an additional insured for the services provided under this Agreement and shall provide
that the Consultant's coverage shall be the primary coverage in the event of a loss. The
policy shall also insure the indemnification obligation contained in Paragraph No. 21. A
certificate of insurance on the City's approved form which verifies the existence of this
insurance coverage must be provided to the City before work under this Agreement is
begun.
B. Worker's Compensation. The Consultant shall secure and maintain such insurance as will
protect Consultant from claims under the Worker's Compensation Acts and from claims for
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bodily injury, death, or property damage which may arise from the performance of
Consultant's services under this Agreement.
C. Professional Liability Insurance. The Consultant agrees to provide to the City a certificate
evidencing that they have in effect, with an insurance company in good standing and
authorized to do business in Minnesota, a professional liability insurance policy. Said
policy shall insure payment of damage for legal liability arising out of the performance of
professional services for the City, in the insured's capacity as the Consultant, if such legal
liability is caused by an error, omission, or negligent act of the insured or any person or
organization for whom the insured is legally liable. Said policy shall provide an aggregate
limit of $1,000,000.
23. Records Access. The Consultant shall provide the City access to any books, documents,
papers, and records which are directly pertinent to the specific contract, for the purpose of making
audit, examination, excerpts, and transcriptions, for three years after final payments and all other
pending matters related to this contract are closed.
24. Ownership of Documents. All plans, diagrams, analyses, reports and information generated in
connection with the performance of the Agreement ("Information") shall become the property of
the City. The City may use the Information for its purposes and the Contractor also may use the
Information for its purposes. Reuse of the Information for the purposes of the project
contemplated by this Agreement ("Project") does not relieve any liability on the part of the
Contractor, but any reuse of the Information by the City or the Contractor beyond the scope of the
Project is without liability to the other, and the party reusing the Information agrees to defend and
indemnify the other from any claims or liability resulting therefrom.
25. Governing Law. This Agreement shall be controlled by the laws of the State of Minnesota.
Executed as of the day and year first written above.
Reviewed for form:
CITY OF PRIOR LAKE
City Engineer
Mayor
City Manager
FIRM
By:
Its:
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Barr Engineering Company
4700 West 77th Street . Minneapolis, MN 55435-4803
Phone: 952-832-2600 . Fax: 952-832-2601 . www.barr.com
An EEO Employer
BARR
Minneapolis, MN . Hibbing, MN . Duluth, MN . Ann Arbor, MI . Jefferson City, MO
November 30, 2005
Mr. Steve Albrecht
City Engineer
16200 Eagle Creek Ave. S.E.
Prior Lake, Mn 55372-1714
Re: Proposal for engineering services to perform a buried bedrock valley pump test
Dear Mr. Albrecht,
Barr Engineering Company is pleased to provide you with a proposal to provide engineering services
to help plan, monitor, and analyze an aquifer test designed to estimate the transmissivity of the
material filling the buried bedrock valley (valley) that separates the west and east sides of the City of
Prior Lake. The data gathered from this test is intended to assist the City in its water resource
planning effort by determining, to the extent that is reasonable, if the City can use the Jordan aquifer
on the west side of the valley as a significant source of water for the City as it continues to grow.
The information in this proposal is based on meetings held with you, Makenzie McCormick, Jay
Frischman and Pat Lynch earlier this fall and on a meeting held with Jay Frischman in our office in
mid-November. The project understanding, scope, schedule, and budget for this project are outlined
below.
Proiect Understandin2
The City of Prior Lake is currently planning the future of its water system and is exploring the
construction of new wells in the Jordan Sandstone aquifer in the western part of the City to feed a
proposed water treatment plant that would be constructed there. From previous and ongoing work
that Barr has done with the City and in this region, we know that the Minnesota Department of
Natural Resources (DNR) will be concerned about the potential impact additional groundwater
appropriations may have on natural resources in the area. Natural resources of concern in the area
include the Savage Fen Wetland Complex, Boiling Springs, and Eagle Creek (a designated trout
stream). The DNR will also be concerned about the potential for interference with existing wells in
the area.
To satisfy the need for additional wells without negatively impacting the natural resources or
interfering with nearby wells, we understand the City wants to locate wells in the Jordan Sandstone
aquifer to the west of the buried bedrock valley that is present beneath the City as shown on Figure 1.
There is limited information on the transmissivity of the materials filling the buried valley as well as
on what, if any, impact pumping west of the buried valley might have on areas east of the valley. For
these reasons, previous attempts to use groundwater flow models to evaluate the potential impact that
additional pumping from the Jordan Sandstone aquifer west of the buried valley might have on
features of interest east of the buried valley has been based on significant assumptions regarding the
materials filling the buried valley.
Mr. Steve Albrecht
November 30, 2005
Page 2
In order to more accurately estimate the impact of additional pumping from the Jordan Sandstone
west of the buried valley, the City has directed Barr to work with the DNR to plan and perform a
significant aquifer test that will better define the interaction between Jordan Sandstone aquifer west
of the buried valley and the materials filling the buried bedrock valley. We met with Jay Frischman
of the DNR on November 9 and laid out the framework for an aquifer test that will attempt to answer
the questions that the DNR has regarding the location of wells west of the buried valley. The test
described in this proposal is only a starting point since additional work will need to be done to
identify all of the wells to be pumped and monitored. The preliminary plan is to pump existing high
capacity wells finished in the Jordan Sandstone aquifer west of the valley for an extended period of
time while monitoring numerous existing wells in the area including wells west of the buried valley,
wells in the buried valley and wells east of the buried valley. To the extent possible we will also
attempt to monitor wells located in the Jordan Sandstone, the Prairie du Chien Group, and the
unconsolidated sediments above the Prairie du Chien. The objective of monitoring water levels in
multiple aquifers during the aquifer test is to determine how well connected the Prairie du Chien
Group and Jordan Sandstone aquifers are and if the pumping from the Jordan Sandstone aquifer
produces any interaction with nearby surface water features. Finally, we will also attempt to monitor
the test in at least one well to the south to see if any useful information can be gathered regarding the
eroded southern edge of the Jordan Sandstone in that area.
Once the desired pumping and monitoring wells have been identified the well owners will be
contacted and permission obtained to either pump or monitor the wells in question. This will result
in a network of existing pumping and monitoring wells that will be used in the test. This network
will be evaluated to see if there are any gaps significant enough to warrant the construction of new
monitoring wells. If appropriate, new piezometers will be constructed to augment the data gathering
network. For the purposes of this proposal, we have assumed that no new monitoring wells need to be
designed or installed. If a monitoring well is needed Barr will work with the City to prepare technical
documents needed to procure a quote to have a new monitoring well in stalled.
It is assumed that the aquifer test will include City Well 6 and possibly other Jordan Sandstone wells
west of the buried bedrock valley. Other wells considered candidates for pumping wells include the
well at the golf course and the one run by the Mdewakanton Sioux. Preliminary indications are that
the other wells under consideration may be open to the Prairie du Chien and the Jordan and if so may
not be usable in the test depending on the final test plan. Numerous potential monitoring wells have
been identified and one of the first tasks will be to narrow the list down to those most beneficial to
the test.
After the network of pumping and monitoring wells has been identified, data gathering protocols will
be set up. Some wells will have automated water level monitoring equipment installed in them while
others may only be monitored manually. The number of wells with automated monitoring equipment
will be limited by project costs and availability of monitoring equipment. Based on preliminary
contacts, the DNR and the Minnesota Department of Health (MDH) have agreed to provide some
pressure transducers and data loggers for use during this test. The exact number of data loggers and
transducers has not yet been determined but those offered by the DNR and MDH are believed to be
available to the City free of charge. At a minimum the DNR has offered to be responsible for
providing equipment for and monitoring the two Prior Lake observation wells and the nest of
observation wells in Savage near the Savage Post Office. These wells are identified as DNR
ObWells on Figure #1. For the purposes of this proposal, we have assumed that the MDH will
Mr. Steve Albrecht
November 30, 2005
Page 3
provide two data loggers and two transducers (free of charge) and that Barr will provide two more
data loggers and transducers (provided at our normal rental rate). We have also assumed that the
pumping wells already have some form of transducers in them that can be logged with existing
SCADA system equipment.
Once the pumping and monitoring well network is set up and all data loggers are in place we will
begin the background monitoring phase of the test by monitoring water levels in all network wells for
one week. If feasible, none of the pumping wells to be used in the test should be pumped during the
background monitoring period. Alternatively, detailed run time and pumping rate/volume data for
each pumping well will be required. The pumping phase of the test will start as a step test from one
well. Once this well has been stepped up to the desired rate additional wells will be turned on to
make the pumping signature as strong as is reasonable. The pumping portion of the test will be run
for approximately two weeks, though data gathered during the test will be evaluated to see if a longer
or shorter test may be warranted. After two weeks of pumping the pumping wells will be turned off
and the aquifer recovery phase of the test will begin. This phase should last for one to two weeks
depending on how quickly the recovery takes place.
During and following the test water level data will be downloaded from the data loggers and analyzed
to see if any changes in the test are warranted. Once the test is completed the data will be analyzed
using software specifically designed for determining aquifer parameters. The data will be used for
the following: to estimate the main aquifer parameters for Jordan Sandstone aquifer and the material
filling the bedrock valley, to estimate the leakage between the Prairie du Chien Group and Jordan
Sandstone aquifers, to see if any hydraulic boundaries on the Jordan Sandstone are present to the east
or south of the pumping wells that might limit the ultimate capacity of a well field in the area, and
finally, to estimate the impact of the pumping on water levels to the east and north of the buried
bedrock valley where the sensitive natural features are located.
The main goals of this test are as follows:
1. To provide data needed to more conclusively determine if additional pumping from the
Jordan Sandstone (or Jordan Sandstone and Prairie du Chien Group) west of the buried valley
affects natural features of interest east of the buried valley.
2. To provide the DNR with data to facilitate their analysis of Prior Lake's request to
appropriate water from a well field constructed west of the buried valley.
3. To more accurately estimate the key aquifer parameters of the material filling the buried
valley and of the bedrock west of the buried valley.
4. To provide the data needed to more accurately estimate the potential yield of a well field
located west of the buried valley.
5. To estimate how far south a well field could be located west of the buried valley.
6. To provide data to more accurately estimate the potential impact of pumping on surface water
features west of the buried valley.
7. To provide data needed to more accurately estimate potential well interference in the area.
Note that this project does NOT include performing any new groundwater modeling, However, it is
likely that as a result of the test additional modeling may be warranted in order to properly layout a
proposed well field or estimate impacts to natural features based on a proposed well field. The
following specific tasks and deliverables are proposed to accomplish the goals of this project.
Mr. Steve Albrecht
November 30, 2005
Page 4
Scope of Work
Task One: Prepare Detailed Aquifer Test Plan
Objective: To obtain DNR acceptance of the proposed test
Tasks: Work with the DNR and agree to an aquifer test plan. Write up the plan so that it meets DNR
requirements and meets the goals of this project. The plan will include the number of pumping wells
and monitoring wells to be included in the test, the proposed length of the test, and proposed
pumping rates and schedules. It will also identify parameters which will be used to determine if the
test plan should be modified after the test has started. Note that this task will likely have one
iteration with Tasks Two and Three since the final plan cannot be written until the exact wells that
will be pumped and monitored are identified.
Deliverable: A technical memo describing the proposed aquifer test.
Level of Effort: 20 hours
Task Two: Set up pumping and monitoring well network
Objective: To identify the specific wells to be used in the aquifer test
Tasks: Barr will prepare a list of pumping and monitoring wells to be used in the aquifer test and
submit the list to DNR and City representatives for consideration and approval. Once agreed upon,
the list will be submitted to the City who will then obtain permission from all well owners to use the
wells in the proposed test.
Deliverable: A preliminary and final list of pumping and monitoring wells submitted to the DNR and
the City. The list will include a map of well locations. The final list will include well owners to
facilitate the City in contacting the owners to request permission to use the wells.
Level of Effort: 20 hours
Task Three: Obtain permission to use identified wells (by City with assistance from Barr)
Objective: To gain access to the wells needed in the test
Tasks: This task will be performed by City of Prior Lake personnel who will contact the owners of all
wells identified in Task Two and obtain permission to access them as needed to perform the test
defined in the test plan prepared under Task One.
Deliverable: Written notification from the City to Barr identifying all wells that can be used in the
test.
Level of Effort: 7 hours
Mr. Steve Albrecht
November 30, 2005
Page 5
Task Four: Prepare pumping and monitoring wells for test
Objective: To prepare the wells that will be used in the test for gathering water level data
Tasks: Work with the DNR and MDH to obtain and install all transducers and data loggers. It is
assumed that the DNR will install their own data loggers/transducers in the three wells that they will
be monitoring and that the MDH will provide their data loggers/transducers to Barr for installation by
Barr personnel. Barr will also provide two data loggers/transducers for the test. For the purposes of
this proposal it is assume that Barr will install four data loggers and transducers. More may be
needed depending on the final aquifer test plan. We will also work with the City and the
Mdewakanton Sioux to see if their SCADA systems are capable of collecting sufficient data during
the aquifer test to meet the test goals using existing equipment in the pumped wells. Depending on
the types of water level monitoring devices and SCADA systems this may be a difficult task.
Deliverable: No specific deliverable is part of this Task
Level of Effort: 53 hours
Task Five: Perform aquifer test
Objective: Gather the data needed to fulfill the objectives of this project
Tasks: Work with owners of the pumped wells to shut down the wells during the background
monitoring phase of the test. Monitor background data collection phase. Check data loggers
periodically to make sure all data are being gathered. Direct when wells are to be turned on and when
changes in the pumping rate(s) are to occur. Oversee manual readings taken in other observation
wells by City of Prior Lake personnel. Determine when the test can be shut down. Monitor recovery
of the water levels. Determine when the test is over. Collect all final data and remove data loggers
and transducers. It is assumed that the pumped wells will be operated and maintained during the test
by the well owners and that the well owners will also be responsible for routing the discharge water
to appropriate locations. We will be on site to start the data loggers for the background monitoring
phase and check them every other day prior to the pumping phase. We will then be on site for the
first 24 hours of the pumping phase and then back to check the loggers on a daily basis during the
pumping phase and once every two days during the recovery phase.
Deliverable: Data files for use in analyzing the test results.
Level of Effort: 190 hours
Task Six: Analyze aquifer test data and prepare final report
Objective: Use the data gathered in the test to meet the seven stated objectives of this pump test.
Tasks: Barr will analyze the data and prepare an aquifer test report in compliance with MDH
requirements for Wellhead Protection Area Delineation. The report will also address each of the
Mr. Steve Albrecht
November 30, 2005
Page 6
seven project goals listed above. Data will be analyzed using various appropriate software packages
including but not limited to AQTESOL V.
Deliverable: Ten copies of a report that summarizes the aquifer test, documents the data gathered and
addresses each of the objectives listed above, and lays out the next step that the City needs to take to
finalize plans for constructing wells west of the buried bedrock valley.
Level of Effort: 104 hours
City Assistance
In order to complete the tasks listed above, it is assumed that the City, the Mdewakanton Sioux, the
DNR, and the MDH will cooperate with Barr and provide information as needed. The following tasks
have been identified as work that the City can provide in support of this test:
. Contact well owners to obtain permission to use their wells for pumping or monitoring during
the test
. Make manual water level measurements in specific identified monitoring wells during the test
. Make any necessary changes, possibly with the help of your system integrator, to your
SCADA system so that water levels can be recorded during the test period at a frequency
appropriate for the data needs of this project
. Provide Barr with SCADA system data collected during the test period
It is also assumed that the City will provide personnel as needed during the aquifer test to provide
Barr with access to the pumping and monitoring wells for the installation and operation of water level
measurement devices.
Schedule
Barr proposes the following schedule for this project:
. Project kickoff meeting
. Task 1 Prepare detailed aquifer test plan
. Task 2 Set up pumping and monitoring well network
. Task 3: Obtain permission to use identified wells
. Task 4: Perform Aquifer Test
. Task 5: Analyze aquifer test data and prepare final report
12/29/05
1/6/05
1/20/06
2/1/05
2/6/06 thru 3/6/06
3/24/06
Budget
The scope of work outlined in this proposal will be performed on a time and materials basis for an
estimated cost of $44,800. Please note that the aquifer test, including gathering background pumping
and recovery data will run for at least one month. The bulk of the costs are associated with the actual
field work to run the test and analyzing the data at the end of the test. There are some options to
reduce costs if the City can assist in setting up the test equipment or help check data loggers during
the test.
Mr. Steve Albrecht
November 30, 2005
Page 7
Please contact me at (612) 832-2774 once you have had a chance to review this proposal. It is
important to Barr that we meet your needs and if modifications to this proposal are needed in order to
address your concerns we will make those that we can. We value our relationship with the City of
Prior Lake and look forward to working with you on this project.
Sincerely,
/~lS
Brian LeMon, Vice President
C:\BKL\proposa1s marketing\Prior Lake pumping test.doc