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
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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
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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
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