STRATEGIC PRIORITY: Environmental & Sustainability
AGENDA DATE: September 28, 2022
COUNCIL DISTRICT(S):|910|DEPARTMENT: Office of Environmental Quality & Sustainability
EXECUTIVE: M. Elizabeth Cedillo-Pereira
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SUBJECT
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A public hearing to receive comments on a proposed municipal setting designation (MSD) to prohibit the use of groundwater as potable water beneath property owned by SCP/OI Good Latimer OZ Owner, LLC located near the intersection of South Good Latimer Expressway and Dawson Street and adjacent street rights-of-way; and an ordinance authorizing support of the issuance of an MSD to SCP/OI Good Latimer OZ Owner, LLC by the Texas Commission on Environmental Quality and prohibiting the use of groundwater beneath the designated property as potable water - Financing: No cost consideration to the City
Recommendation of Staff: Approval
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BACKGROUND
Based on information provided by the Applicant, the designated property is underlain by shallow groundwater that is encountered at approximately 27 to 42 feet below ground surface (bgs) and extends down to a clay/claystone confining layer, which is located at depths of approximately 33 to 50 feet bgs at the top of the underlying Austin Chalk Limestone formation which is up to 600 feet thick. The direction of groundwater flow beneath the designated property is relatively flat and is generally towards the west/southwest; however, the direction may vary seasonally and be dependent on precipitation. A portion of the designated groundwater has been affected by chlorinated volatile organic compounds (VOCs) including tetrachloroethene, trichloroethene, cis-1,2-dichloroethene, and vinyl chloride at concentrations above groundwater ingestion standards. The source or sources of the chlorinated VOCs appears to primarily be releases from offsite historical industrial operations in the vicinity, including historical auto repair, chrome plating ...
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