CC MEETING: May 19, 2015
DATE: May 12, 2015
TO: Leonard Martin, City Manager
FROM: Scott Hudson, Environmental Services Director
Title
Consider A Resolution Authorizing The City Manager To Execute A Contract With Cirrus Associates, LLC For The Background Study And Application To The Texas Commission On Environmental Quality For A Municipal Setting Designation Associated With The Downtown Carrollton Area Including 1309 South Broadway In An Amount Not To Exceed $114,425.00.
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BACKGROUND:
A recently completed supplement to Phase II Environmental Site Assessments conducted at 1309 South Broadway, a property currently owned by the City, confirmed the presence of benzene in groundwater above the protective concentration level under the Texas Risk Reduction Program. This most recent analysis also indicates that groundwater containing benzene may have migrated beyond the boundaries of this tract.
Confirming these benzene concentrations triggered a requirement to report to the Texas Commission on Environmental Quality (TCEQ). That initial report has been filed. Under TCEQ rules several options exist for the City to address soil and groundwater concerns. Of these, establishing a Municipal Setting Designation (MSD) for the property or area appears to offer the shortest and least costly path, especially considering that other options require a commitment to multi-year processes of treatment and/or monitoring.
An MSD is an official designation given by TCEQ certifying that the groundwater underneath a property is not used as potable water and is prohibited from future use as potable water because of contamination above potable-water protective concentration levels. The purpose of the MSD is to limit or eliminate the need for investigation or remediation of groundwater contamination in cases where the groundwater is not being used as a drinking water supply and where there is no other exposure pathway.
This project would pro...
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