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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 EnvelopeId Stamping: Enabled 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 Signer Events Signature Timestamp Christina Dormady christina.dormady@cityofdenton.com Buyer City of Denton Security Level: Email, Account Authentication (None) Completed Using IP Address: 198.49.140.10 Sent: 9/18/2025 9:35:52 AM Viewed: 9/18/2025 9:36:02 AM Signed: 9/18/2025 9:36:26 AM Electronic Record and Signature Disclosure: Not Offered via Docusign Christa Christian Christa.christian@cityofdenton.com Purchasing Supervisor City of Denton Security Level: Email, Account Authentication (None) Signature Adoption: Pre-selected Style Using IP Address: 198.49.140.10 Sent: 9/18/2025 9:36:28 AM Viewed: 9/18/2025 10:35:35 AM Signed: 9/18/2025 10:35:46 AM Electronic Record and Signature Disclosure: Not Offered via Docusign Marcella Lunn marcella.lunn@cityofdenton.com Senior Deputy City Attorney City of Denton Security Level: Email, Account Authentication (None) Signature Adoption: Pre-selected Style Using IP Address: 198.49.140.10 Sent: 9/18/2025 10:35:48 AM Viewed: 9/18/2025 10:50:49 AM Signed: 9/18/2025 10:52:21 AM Electronic Record and Signature Disclosure: Not Offered via Docusign Leslie A. Jeske ljeske@solutientgeosciences.com President Security Level: Email, Account Authentication (None)Signature Adoption: Pre-selected Style Using IP Address: 75.108.184.216 Sent: 9/18/2025 10:52:23 AM Viewed: 9/18/2025 11:08:45 AM Signed: 9/18/2025 11:09:22 AM Electronic Record and Signature Disclosure: Accepted: 9/18/2025 11:08:45 AM ID: 3d182daf-dd1a-41e4-8384-3e2e52daeb94 Signer Events Signature Timestamp Michael Gange michael.gange@cityofdenton.com Director of Environmental Services & Sustainability Security Level: Email, Account Authentication (None)Signature Adoption: Pre-selected Style Using IP Address: 198.49.140.10 Sent: 9/18/2025 11:09:24 AM Resent: 9/19/2025 1:14:09 PM Viewed: 9/19/2025 2:48:48 PM Signed: 9/19/2025 2:49:19 PM Electronic Record and Signature Disclosure: Accepted: 9/19/2025 2:48:48 PM ID: 5d72252c-1edb-4fd5-96ed-c215862a26ef Christina Dormady christina.dormady@cityofdenton.com Buyer City of Denton Security Level: Email, Account Authentication (None) Signature Adoption: Pre-selected Style Using IP Address: 198.49.140.104 Sent: 9/19/2025 2:49:22 PM Viewed: 9/19/2025 4:54:20 PM Signed: 9/19/2025 4:54:44 PM Electronic Record and Signature Disclosure: Not Offered via Docusign In Person Signer Events Signature Timestamp Editor Delivery Events Status Timestamp Agent Delivery Events Status Timestamp Intermediary Delivery Events Status Timestamp Certified Delivery Events Status Timestamp Carbon Copy Events Status Timestamp Cheyenne Defee cheyenne.defee@cityofdenton.com Procurement Administration Supervisor City of Denton Security Level: Email, Account Authentication (None) Sent: 9/19/2025 4:54:46 PM Electronic Record and Signature Disclosure: Not Offered via Docusign Ami Reeder ami.reeder@cityofdenton.com Security Level: Email, Account Authentication (None) Sent: 9/19/2025 4:54:46 PM Electronic Record and Signature Disclosure: Accepted: 12/20/2024 8:33:33 PM ID: 64fa5b3d-5681-4060-bfcd-88d5640b9191 Witness Events Signature Timestamp Notary Events Signature Timestamp Envelope Summary Events Status Timestamps Envelope Sent Hashed/Encrypted 9/18/2025 9:35:52 AM Certified Delivered Security Checked 9/19/2025 4:54:20 PM Signing Complete Security Checked 9/19/2025 4:54:44 PM Completed Security Checked 9/19/2025 4:54:46 PM Payment Events Status Timestamps Electronic Record and Signature Disclosure ELECTRONIC RECORD AND SIGNATURE DISCLOSURE From time to time, City of Denton (we, us or Company) may be required by law to provide to you certain written notices or disclosures. 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