Item 4J - Memo Item 4J
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M E M O R A N D U M
(November 19, 2024)
To: Alison Ortowski, City Manager
From: Rob Cohen, Director of Public Works
Subject: Ordinance No. 836-A, 1st Reading, an amendment to
Chapter 9.5, Article 3 of the Southlake City Code,
updating the Pretreatment Program.
Action
Requested: Ordinance No. 836-A, 1st Reading, an amendment to Chapter
9.5, Article 3 of the Southlake City Code, updating the
Industrial Wastewater Pretreatment Program.
Background
Information: The City of Southlake is contracted with the Trinity River
Authority to treat received wastewater. All of Southlake’s
wastewater flows to either Denton Creek or Central Regional
Wastewater facilities to be treated.
Similarly to Southlake, the Trinity River Authority operates on
a Texas Pollutant Discharge Elimination System Stormwater
permit, that requires updates on a routine basis 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 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 20th, 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 the Trinity River Authority
must obtain a signed attorney statement, proceed with
adequate public notice, and pass the program through the
City Council.
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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 the Trinity River Authority. While the cost is
dependent on the number of samples and contaminants
analyzed, historically we have spent approximately $1,250.00
per quarter on industrial sampling.
.
Strategic Link: The ordinance links 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 B1 Achieving strong outcomes through
continual evaluation and pursuit of better practices that
improve core business operations.
Citizen Input/
Board Review: None
Legal Review: The City Attorney reviewed Ordinance No. 836-A.
Alternatives: The City Council may approve or deny Ordinance No. 836-A.
Supporting
Documents:
Attachment A: Southlake_FINAL_ORDINANCE
Attachment B: Southlake_FINAL_ATTORNEY_STATEMENT
Attachment C: Southlake_FINAL_ENFORCEMENT_RESPONSE_PLAN
Attachment D: Southlake_FINAL_FUNDING_RESOLUTION
Staff
Recommendation: Approve Ordinance No. 836-A, 1st Reading, an amendment
to Chapter 9.5, Article 3 of the Southlake City Code, updating
the Industrial Wastewater Pretreatment Program
Staff Contact: Rob Cohen, Director of Public Works
Madisson Dunn, Environmental and Regulatory Supervisor