8525-006 - Formal Amendment 1 Executed
DocuSign Transmittal Coversheet
File Name
Purchasing Contact
Docusign Envelope ID: AA43F252-2F9D-4B75-AD99-E2B4FDB4493F
Christina Dormady
8525-006 Groundwater Analytical Services - Amendment 1
8525-006 PSA – Amendment #1 Page 1 of 2
FIRST AMENDMENT TO CONTRACT
BY AND BETWEEN THE CITY OF DENTON, TEXAS
AND SOLUTIENT GEOSCIENCES, INC.
PSA 8525-006
THE STATE OF TEXAS §
COUNTY OF DENTON §
THIS FIRST AMENDMENT TO CONTRACT 8525-006 (“Amendment”) by and
between the City of Denton, Texas (“City”) and Solutient GeoSciences, Inc. (“Engineer”);
to that certain contract executed on January 15, 2025, in the original not-to-exceed amount
of $490,010.00 (the “Agreement”); for services related to the 2025 Groundwater Analytical
Services.
WHEREAS, the City deems it necessary to further expand the services provided by
Engineer to the City pursuant to the terms of the Agreement, and to provide an additional
not-to-exceed amount $5,975.00 with this Amendment for an aggregate not-to-exceed
amount of $495,985.00; and
FURTHERMORE, the City deems it necessary to further expand the goods/services
provided by Engineer to the City;
NOW THEREFORE, the City and Engineer (hereafter collectively referred to as the
“Parties”), in consideration of their mutual promises and covenants, as well as for other
good and valuable considerations, do hereby AGREE to the following Amendment, which
amends the following terms and conditions of the said Agreement, to wit:
1. The additional services described in Exhibit “A” of this Amendment, attached
hereto and incorporated herein for all purposes, for professional services related to
repair the surface completion at piezometer EB16-W2 at the City of Denton
Landfill at 1527 S. Mayhill Road, Denton, TX, are hereby authorized to be
performed by Engineer. For and in consideration of the additional services to be
performed by Engineer, the City agrees to pay, based on the cost estimate detail
attached as Exhibit “A”, a total fee, including reimbursement for non-labor
expenses an amount not to exceed $5,975.00.
2. This Amendment modifies the Agreement amount to provide an additional
$5,975.00 for the additional services with a revised aggregate not to exceed total of
$495,985.00.
Docusign Envelope ID: AA43F252-2F9D-4B75-AD99-E2B4FDB4493F
8525-006 PSA – Amendment #1 Page 2 of 2
The Parties hereto agree, that except as specifically provided for by this Amendment, that
all of the terms, covenants, conditions, agreements, rights, responsibilities, and obligations
of the Parties, set forth in the Agreement remain in full force and effect.
IN WITNESS WHEREOF, the City and the Engineer, have each executed this
Amendment electronically, by and through their respective duly authorized representatives
and officers on this date _________________________.
“City”
CITY OF DENTON, TEXAS
A Texas Municipal Corporation
By:
_________________________________
AUTHORIZED SIGNOR, TITLE
“Engineer”
Solutient GeoSciences, Inc.
By:
_________________________________
AUTHORIZED SIGNOR, TITLE
THIS AGREEMENT HAS BEEN
BOTH REVIEWED AND APPROVED
as to financial and operational
obligations and business terms.
_______________ ________________
SIGNATURE PRINTED NAME
__________________________________
TITLE
__________________________________
DEPARTMENT
APPROVED AS TO FORM:
MACK REINWAND, CITY ATTORNEY
BY:
_______________________________
Docusign Envelope ID: AA43F252-2F9D-4B75-AD99-E2B4FDB4493F
President
Environmental Services & Sustainability
Michael Gange
Director of Environmental Services & Sustainability
9/19/2025
Buyer
Solutient GeoSciences, Inc.
3800 Paluxy Drive, Suite 260
Tyler, Texas 75703
www.solutientgeosciences.com
September 17, 2025
Ami Reeder
Regulatory Compliance Manager
City of Denton
1527 S. Mayhill Road
Denton, Tx. 76208
Re:Proposal - Piezometer EB16-W2 Repair
City of Denton Landfill (MSW Permit No. 1590B)
1527 S. Mayhill Road
Denton (Denton County), Texas
Dear Ms. Reeder:
In accordance with your recent request, Solutient GeoSciences, Inc. (Solutient) is pleased to submit
the following proposal for providing professional services to repair the surface completion at
piezometer EB16-W2 at the above referenced landfill facility.
Scope of Services
As we understand it, the casing, surface completion, and two bumper poles at piezometer EB16-W2
were recently damaged by heavy equipment. The incident resulted in dislocation of the entire
stickup wellhead protector, concrete pad, and two bumper poles, and severing of the existing 2-inch
diameter PVC riser above the ground surface. The repair scope of work will include demolition of
the dislocated wellhead protector and concrete pad, and installation of a 2-inch PVC riser extension
using a slip-on collar, new stickup wellhead protector within a 5-foot by 5-foot by 6-inch thick
reinforced concrete pad, and two new 3-inch diameter steel bumper poles filled with concrete and
painted traffic yellow. Once the field work has been completed, the City will be responsible for
contracting a licensed surveyor to measure the new x,y coordinates, and top of casing and top of
concrete pavement elevations for the piezometer.
Solutient will provide an experienced, on-site Project Manager/Hydrogeologist to directly supervise
the piezometer repair activities, which will be performed by C&S Lease Service LC as an
independent subcontractor to Solutient. C&S Lease Service LC is a state of Texas licensed water
well driller and has performed work at the landfill facility previously. Solutient will also conduct
daily safety meetings to insure the work is performed in a safe manner. Permission to enter and
access the site with single-drive and tandem-drive axle, truck-mounted and trailer-mounted
equipment will be provided by the City.
Exhibit A
Docusign Envelope ID: AA43F252-2F9D-4B75-AD99-E2B4FDB4493F
Ami Reeder, City of Denton
September 17, 2025
Page 2
Probable Cost Estimate
Based upon the above scope of services and our understanding of the project, we have prepared the
attached Probable Cost Estimate which shows the estimated quantities of work and unit fees. It is
estimated that the total amount of this proposal should not exceed $ 5,975.00.
You will be notified if unforeseen conditions are encountered or there is a necessity to change the
scope of work. In the event additional services are required beyond those detailed in this proposal,
such will be performed on a time and materials basis. Additional work will not be performed
without first obtaining the City’s approval of any additional costs. Invoicing will be performed on
a monthly basis and will be based on the actual work performed and the unit prices shown in the
attached Probable Cost Estimate.
Commencement and Completion
It is estimated the work can be performed within one to two weeks upon receiving the City’s
authorization to proceed, and we estimate the field work can be completed in one working day. If
this proposal is agreeable, please sign and date it, and forward a copy to my attention. Issuance of
a purchase order will also serve as authorization to proceed.
Should you have any questions after reviewing this proposal, please do not hesitate to contact me
at (903) 574-0884. We look forward to working with you on this project.
Very truly yours,
Solutient GeoSciences, Inc.
Texas Geoscience Firm Registration No. 50004
Leslie A. Jeske, P.G.
Hydrogeologist, License No. 670
Attach: Probable Cost Estimate
ACCEPTED AND AUTHORIZED to proceed this ________ day of September, 2025
by ___________________________________________________________.
(Authorized Representative, City of Denton)
Payment due within 30 days net of invoice date.
Docusign Envelope ID: AA43F252-2F9D-4B75-AD99-E2B4FDB4493F
19
Item Quantity Unit Unit Rate Cost
Project Manager/Hydrogeologist 14 hour 225.00$ 3,150.00$
CAD Specialist 2 hour 100.00$ 200.00$
Field Vehicle 1 day 75.00$ 75.00$
Mileage 50 hour 0.70$ 35.00$
Per Diem 1 day 215.00$ 215.00$
Repair Piezometer Surface Completion - C&S Lease Service LC 1 ls 2,300.00$ 2,300.00$
Survey of New Top of Casing Elevation - To be Provided by Client NA
TOTAL:5,975.00$
Notes:
1. Piezometer repair services will be provided by C&S Lease Service LC, a state of Texas licensed water well driller,
as an independent contractor to Solutient GeoSciences, Inc.
2. Piezometer repair will include removal of damaged stickup wellhead protector, concrete pad, and 2 bumper poles, and
addition of new 2" PVC riser and stickup wellhead, and installation of new concrete pad and 2 bumper poles.
3. Survey services for measuring new top of casing elevation will be provided by the City of Denton.
MSW Permit No. 1590B
Denton (Denton County), Texas
PROBABLE COST ESTIMATE
Piezometer EB16-W2 Surface Completion Repair
1527 S. Mayhill Road
September 17, 2025
City of Denton Landfill
Docusign Envelope ID: AA43F252-2F9D-4B75-AD99-E2B4FDB4493F
Certificate Of Completion
Envelope Id: AA43F252-2F9D-4B75-AD99-E2B4FDB4493F Status: Completed
Subject: ***Purchasing Approval*** 8525-006 Groundwater Analytical Services - Amendment 1
Source Envelope:
Document Pages: 6 Signatures: 6 Envelope Originator:
Certificate Pages: 6 Initials: 1 Christina Dormady
AutoNav: Enabled
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Time Zone: (UTC-06:00) Central Time (US & Canada)
901B Texas Street
Denton, TX 76209
christina.dormady@cityofdenton.com
IP Address: 198.49.140.10
Record Tracking
Status: Original
9/18/2025 9:31:45 AM
Holder: Christina Dormady
christina.dormady@cityofdenton.com
Location: DocuSign
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Christina Dormady
christina.dormady@cityofdenton.com
Buyer
City of Denton
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Christa Christian
Christa.christian@cityofdenton.com
Purchasing Supervisor
City of Denton
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Marcella Lunn
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Leslie A. Jeske
ljeske@solutientgeosciences.com
President
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Michael Gange
michael.gange@cityofdenton.com
Director of Environmental Services & Sustainability
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Christina Dormady
christina.dormady@cityofdenton.com
Buyer
City of Denton
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Cheyenne Defee
cheyenne.defee@cityofdenton.com
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City of Denton
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Ami Reeder
ami.reeder@cityofdenton.com
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Electronic Record and Signature Disclosure created on: 7/21/2017 3:59:03 PM
Parties agreed to: Leslie A. Jeske, Michael Gange, Ami Reeder
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