STRATEGIC PRIORITY: Quality of Life
AGENDA DATE: December 8, 2021
COUNCIL DISTRICT(S): 14
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 to prohibit the use of groundwater as potable water beneath property owned by Pan Coastal Limited Partnership located near the intersection of Lemmon Avenue and McKinney Avenue and adjacent street rights-of-way; and an ordinance authorizing support of the issuance of a municipal setting designation to KDC McLemmon Investments One LP 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 18 to 21 feet below ground surface (bgs) and extends down to approximately 35 feet bgs to the top of the underlying Austin Chalk Formation. The Austin Chalk is competent limestone bedrock with an estimated thickness of approximately 300-500 feet and is considered a regional aquitard that prevents vertical migration to underlying aquifers. The direction of groundwater flow beneath the designated property is generally towards the southwest. A portion of the designated groundwater has been affected by tetrachloroethene, trichloroethene, cis-1,2-dichloroethene, and vinyl chloride at concentrations above groundwater ingestion standards. The potential sources of these chemicals are unknown, but appear to be associated with historical onsite and offsite operations. The potential onsite sources are from operations of former dry cleaners and auto repair. The potential off-site sources are from operations of multip...
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