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Item 6C and 6D - MemoItem 6C and 6D CITY OF SOUTHLAKI= MEMORANDUM December 3, 2024 To: Alison Ortowski, City Manager From: Rob Cohen, Director of Public Works Subject: Ordinance No. 836-A, 2nd Reading, an amendment to Chapter 9.5, Article 3 of the Southlake City Code, updating the Industrial Wastewater Pretreatment Program. Resolution No. 24-045, supporting the funding, implementation, and enforcement of the Wastewater Pretreatment Program that is interconnected to the Central Regional Wastewater System owned and operated by the Trinity River Authority. Action Requested: Ordinance No. 836-A, 2nd Reading, an amendment to Chapter 9.5, Article 3 of the Southlake City Code, updating the Industrial Wastewater Pretreatment Program. Resolution No. 24-045 supporting the funding, implementation, and enforcement of the Wastewater Pretreatment Program that is interconnected to the Central Regional Wastewater System owned and operated by the Trinity River Authority. Background Information: The City of Southlake is contracted with the Trinity River Authority (TRA) to treat received wastewater. All of Southlake's wastewater flows to either TRA's Denton Creek or Central Regional Wastewater facilities to be treated. Similarly to Southlake, TRA operates on a Texas Pollutant Discharge Elimination System Stormwater permit, requiring routine updates to control stormwater pollution. In 2021, the Trinity River Authority Central Regional facility submitted a revised pretreatment program to the Texas Commission on Environmental Quality (TCEQ), which included updates to the Page 1 of 3 Item 6C and 6D hazardous waste discharge notification process, the dental amalgam rule, and proposed technically based local limits (including allowance decrease in Chromium, Copper, Cyanide, Molybdenum, Nickel, and Zinc and allowance increase in Lead, Mercury, and Selenium). As of June 20, 2024, the TCEQ has reviewed TRA's pretreatment program and designated it as "technically complete." As a customer city, Southlake must enact equally or more stringent regulations pertaining to wastewater content and pretreatment. All customer cities of TRA must obtain a signed attorney statement, proceed with adequate public notice, and pass the program through the City Council. Financial Considerations: There is no cost associated with this program update at present. If an industrial site enters Southlake, there would be a cost to provide industrial sampling and analysis services through TRA. While the cost is dependent on the number of samples and contaminants analyzed, historically we have spent approximately $1,250 per quarter on industrial sampling. Strategic Link: The ordinance and funding resolution link to the City's strategy map relative to the focus area of Performance Management & Service Delivery. The specific corporate objectives that are met by this ordinance are 131 Achieving strong outcomes through continual evaluation and pursuit of better practices that improve core business operations. Citizen Input/ Board Review: Ordinance No. 836-A was approved on consent by City Council on 1st reading on November 19, 2024. Legal Review: The City Attorney reviewed Ordinance No. 836-A and Funding Resolution 24-045. Alternatives: The City Council may approve or deny Ordinance No. 836-A and Funding Resolution 24-045. Supporting Page 2 of 3 Item 6C and 6D Documents: • Attachment A: Ordinance No. 836-A • Attachment B: Attorney Statement (to be signed following approval) • Attachment C: Enforcement Response Plan • Attachment D: Resolution No. 24-045 Staff Recommendation: Approve Ordinance No. 836-A, 2nd Reading, an amendment to Chapter 9.5, Article 3 of the Southlake City Code, updating the Industrial Wastewater Pretreatment Program. Approve Resolution No. 24-045 supporting the funding, implementation, and enforcement of the Industrial Wastewater Pretreatment Program that is interconnected to the Central Regional Wastewater System owned and operated by the Trinity River Authority. Staff Contact: Rob Cohen, Director of Public Works Lauren LaNeave, Deputy Director of Public Works Madisson Dunn, Environmental and Regulatory Supervisor Page 3 of 3