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8525-001 - Amendment 1 Executed DocuSign Transmittal Coversheet File Name Purchasing Contact Docusign Envelope ID: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 8525-001 - 2024 GOP Renewal - Amendment 1 Christina Dormady 8525-001 PSA – Amendment #1 Page 1 of 2 FIRST AMENDMENT TO CONTRACT BY AND BETWEEN THE CITY OF DENTON, TEXAS AND WEAVER CONSULTANTS GROUP, LLC PSA 8525-001 THE STATE OF TEXAS § COUNTY OF DENTON § THIS FIRST AMENDMENT TO CONTRACT 8525-001 (“Amendment”) by and between the City of Denton, Texas (“City”) and Weaver Consultants, LLC (“Engineer”); to that certain contract executed on September 19, 2024, in the original not-to-exceed amount of $5,000 (the “Agreement”); for services related to 2024 GOP Renewal. 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 $11,200 with this Amendment for an aggregate not-to-exceed amount of $16,200; 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 the 2024 GOP Renewal, 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” to this Amendment, attached hereto and incorporated herein for all purposes, a total fee, including reimbursement for non-labor expenses an amount not to exceed $11,200. 2. This Amendment modifies the Agreement amount to provide an additional $11,200 for the additional services with a revised aggregate not to exceed total of $16,200. 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. Docusign Envelope ID: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 8525-001 PSA – Amendment #1 Page 2 of 2 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” Weaver Consultants Group, LLC 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: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 Principal Director of Environmental Services & Sustainability Environmental Services & Sustainability Michael Gange 12/23/2024 12/23/2024 420 SOUTHWEST BLVD., STE. 206 FORT WORTH, TEXAS 76109 PHONE: (817) 735-9770 FAX: (817) 735-9775 P:\LFG\PROPOSAL\CITY OF DENTON\2025 AIR\MEMO 2025 AIR PROJECTS.DOCX Weaver Consultants Group Page 1 of 1 M E M O R A N D U M TO: Ami Reeder City of Denton DATE: December 13, 2024 FROM: Archana Nagaraj Angie Vandergriff Weaver Consultants Group, LLC PROJECT: LLCP-011-02-11-05 RE: 2024 Emissions Inventory, 2024 GHG Report, 2025 Tier 2 NMOC Report City of Denton Landfill Weaver Consultants Group, LLC (WCG) is pleased to provide the City of Denton with the following scope of work and estimate for professional engineering services for the City of Denton Landfill. The services to be provided under this scope of work include the preparation and submittal of the 2024 Emissions Inventory to the TCEQ, the 2024 GHG Report to the EPA, and the 2025 Tier 2 NMOC Report to the EPA. WCG appreciates the opportunity to assist the City with this project. If you have any questions or comments, please call. Exhibit A Docusign Envelope ID: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 SCOPE OF WORK 2024 EMISSIONS INVENTORY 2024 GHG REPORT 2025 TIER 2 NMOC REPORT CITY OF DENTON LANDFILL Prepared for City of Denton December 2024 Prepared by Weaver Consultants Group, LLC 6420 Southwest Blvd., Suite 206 Fort Worth, Texas 76109 817-735-9770 Docusign Envelope ID: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 Weaver Consultants Group, LLC P:\LFG\PROPOSAL\CITY OF DENTON\2025 AIR\CITY OF DENTON 2025 AIR PROJECTS PROPOSAL.DOCX 12/13/24 1 2024 EMISSIONS INVENTORY, 2024 GHG, AND 2025 TIER 2 REPORTS CITY OF DENTON LANDFILL Project Understanding In an effort to maintain compliance with all state air quality regulations, the City of Denton has requested that Weaver Consultants Group, LLC (WCG) submit a proposal for preparing the 2024 Emissions Inventory (EI), 2024 Greenhouse Gas (GHG) Emissions Report required under the MGGR, and the 2025 Tier 2 NMOC Reporting for the City of Denton Landfill. Task 1 – Prepare Emissions Inventory Response WCG will prepare the 2024 EI calculations for the site using the information provided by the site. The landfill emission calculations will be prepared utilizing the available site-specific information and the U.S. EPA’s Landfill Gas Emissions Model (Model). The Model will be used to estimate the landfill’s actual emissions of volatile organic compounds (VOCs) and hazardous air pollutants (HAPs). Emission calculations will be prepared for the particulate matter (PM2.5, PM10, and PM30) emissions generated from vehicles traveling on unpaved roads and earthmoving operations at the site by utilizing the EPA’s Compilation of Air Pollutant Emission Factors (AP-42). The flare emissions will be calculated using the site-specific information and manufacturer emission factors. Emission calculations will also be prepared for the storage tanks, solidification operations, emergency generator, and surface coating operations. In addition, WCG will prepare the EI forms with the calculated emission totals and other site information to be submitted to the TCEQ. Upon completion of emission calculations, WCG will submit electronically in STEERS the calculated emission totals and other site information as required by the TCEQ regulations. Task 2 – 2024 GHG Emissions Report Under this task, WCG will prepare the GHG generation and emission calculations for the site using the information provided by the site and the procedures of 40 CFR Part 98 including Subpart A, Subpart HH, and Subpart C, if necessary. The City will provide the raw monitoring data and additional information requested by WCG. WCG will then perform all necessary data consolidations and missing data calculations according to Subpart HH and Subpart C, as necessary. Docusign Envelope ID: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 Weaver Consultants Group, LLC P:\LFG\PROPOSAL\CITY OF DENTON\2025 AIR\CITY OF DENTON 2025 AIR PROJECTS PROPOSAL.DOCX 12/13/24 2 The methane generation and emissions from the landfill and landfill gas destruction devices will be calculated with each applicable method required under Subpart HH. The emissions calculations will be based on monitored parameters including: • Waste acceptance, • Rule-provided default values, • Continuous landfill gas flow and methane readings, and • Varying site-specific parameters. In addition to compiling the report, WCG will also complete the electronic submittal with the calculated values and other site information using the e-GGRT reporting system. The information will be submitted to the City in a draft format before being submitted through the e-GGRT system. WCG will provide a finalized copy to keep on-site for reference. Task 3 – 2025 Tier 2 NMOC Report The Denton Landfill is an existing municipal solid waste (MSW) landfill as defined in the Federal Plan Regulations Part 62 Subpart OOO for MSW Landfills located in Title 40 Code of Federal Regulations (CFR). The Landfill has a design capacity above 2.5 million megagrams (Mg). Previous Tier 2 testing was completed at the site between June and July, 2023. The 2023 and 2024 NMOC Emission Rate Report were submitted on August 2, 2023 and July 2024 that resulted in emissions below 34 Mg/yr. As required under § 62.16714(e), the site must recalculate the NMOC mass emission rate annually. This proposal is for the 2025 NMOC emissions rate calculation based on 2024 waste acceptance. WCG will use the site-specific NMOC concentration from 2023 and the 2024 waste acceptance rate to estimate the landfill’s 2025 NMOC emission rate using the EPA Landfill Gas Emissions Model. If the Tier 2 NMOC emission rate is below 34 Mg/yr, then the Landfill would avoid being further subject to the Federal Plan OOO regulations. If the results show emissions to be at or above 34 Mg/yr, the site will need to submit a gas collection and control system (GCCS) design plan within 1 year and install and operate a GCCS within 30 months. WCG will send the draft Tier 2 report to the City of Denton for review. After receiving comments, WCG will incorporate the review comments and complete the Tier 2 report. The finalized Tier 2 report will be submitted to the EPA via CEDRI, and a copy will be provided to TCEQ. Project Budget The estimated cost for this project is shown below with all services being provided on a lump sum basis. Docusign Envelope ID: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 Weaver Consultants Group, LLC P:\LFG\PROPOSAL\CITY OF DENTON\2025 AIR\CITY OF DENTON 2025 AIR PROJECTS PROPOSAL.DOCX 12/13/24 3 Cost Estimate Task & Description Labor Cost Direct Expenses Total Cost 2024 Emissions Inventory $3,000 $200 $3,200 2024 GHG Emissions Report $5,700 $200 $5,900 2025 Tier 2 NMOC Report $1,900 $200 $2,100 Total Cost $11,200 Project Schedule The projects will begin upon receipt of proposal acceptance. The EI and GHG reports are both due to the TCEQ and EPA, respectively, by March 31, 2025. The City of Denton will be sent a draft for review, comment, and signature (as needed), and WCG will submit the final version of each report by the required due date. The draft Tier 2 test report will be submitted to the City during the first few weeks of July 2025. The final report will be submitted to the EPA within two weeks of receiving comments on the draft report. This schedule is preliminary and alterations can be made to meet the requirements of the City. Assumptions The proposed budget is based upon the following assumptions. If the scope of work is modified, the total cost of services may be adjusted to reflect that change. To prepare the scope of work and budget for the proposed scope of work, WCG has made the following assumptions: • The City will provide all necessary information (hard copy and electronic copy) relevant to this project. Background materials requested will be available to WCG at no cost. • A landfill representative will answer and provide as much information as possible to WCG’s questions regarding the emission sources. • This proposal does not include any testing, laboratory, or field work. Docusign Envelope ID: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 Certificate Of Completion Envelope Id: 02B73F73-4722-4D8C-9391-37CE94D8BCC0 Status: Completed Subject: ***Purchasing Approval***8525-001 - 2024 GOP Renewal - Amendment Source Envelope: Document Pages: 8 Signatures: 4 Envelope Originator: Certificate Pages: 5 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: 198.49.140.104 Record Tracking Status: Original 12/20/2024 9:39:19 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: 198.49.140.104 Sent: 12/20/2024 9:45:48 AM Viewed: 12/20/2024 9:45:56 AM Signed: 12/20/2024 9:46:19 AM Electronic Record and Signature Disclosure: Not Offered via DocuSign Lori Hewell lori.hewell@cityofdenton.com Purchasing Manager City of Denton Security Level: Email, Account Authentication (None) Signature Adoption: Pre-selected Style Using IP Address: 198.49.140.104 Sent: 12/20/2024 9:46:21 AM Viewed: 12/20/2024 3:53:11 PM Signed: 12/20/2024 3:56:58 PM 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: 35.135.179.188 Signed using mobile Sent: 12/20/2024 3:57:00 PM Viewed: 12/20/2024 3:57:09 PM Signed: 12/20/2024 3:59:58 PM Electronic Record and Signature Disclosure: Not Offered via DocuSign MATT STUTZ Mstutz@wcgrp.com Principal N/A Security Level: Email, Account Authentication (None) Signature Adoption: Pre-selected Style Using IP Address: 104.28.50.135 Signed using mobile Sent: 12/23/2024 9:12:12 AM Viewed: 12/23/2024 10:03:31 AM Signed: 12/23/2024 10:03:46 AM Electronic Record and Signature Disclosure: Accepted: 3/31/2021 1:28:50 PM ID: 3ec4431a-7132-4149-9c90-a1d0e8ad6711 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: 12/23/2024 10:03:48 AM Viewed: 12/23/2024 10:30:25 AM Signed: 12/23/2024 10:32:36 AM Electronic Record and Signature Disclosure: Accepted: 12/23/2024 10:30:25 AM ID: 91e8b5a0-db4e-4527-8877-78a23492d59d Christina Dormady christina.dormady@cityofdenton.com Buyer City of Denton Security Level: Email, Account Authentication (None) Signature Adoption: Pre-selected Style Using IP Address: 47.4.82.151 Sent: 12/23/2024 10:32:38 AM Viewed: 12/23/2024 10:47:38 AM Signed: 12/23/2024 10:47:47 AM 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: 12/23/2024 10:47:49 AM Electronic Record and Signature Disclosure: Not Offered via DocuSign Witness Events Signature Timestamp Notary Events Signature Timestamp Envelope Summary Events Status Timestamps Envelope Sent Hashed/Encrypted 12/20/2024 9:45:48 AM Envelope Updated Security Checked 12/23/2024 9:12:11 AM Envelope Updated Security Checked 12/23/2024 9:12:11 AM Envelope Updated Security Checked 12/23/2024 9:12:11 AM Certified Delivered Security Checked 12/23/2024 10:47:38 AM Signing Complete Security Checked 12/23/2024 10:47:47 AM Completed Security Checked 12/23/2024 10:47:49 AM 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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