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29 June 2009. <br /> Carl Navarra <br /> 475 Blewett Road <br /> Tracy, CA 95376 <br /> Subject: Navarra Property <br /> 7500 W. Eleventh Street <br /> Tracy, CA 95376 <br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed <br /> the copy of the access agreement between you and Mr. Russ Zelman, owner of the property at <br /> 7501 West Eleventh Street, Tracy, and has conducted a 30-day comment period to obtain input <br /> on the remediation system from the people most likely to be affected by it; no comments were <br /> received. The EHD therefore reapproves the corrective action plan presented in Corrective <br /> Action Plan for Former Fueling Station 7500 West Eleventh Street, Tracy, California (CAP), <br /> dated 25 July 2007 as augmented by Corrective Action Plan (Addendum) for Former Fueling <br /> Station 7500 West Eleventh Street, Tracy, California (CAP Addendum), dated October 2007 <br /> and memo dated 31 March 2008; all prepared by The San Joaquin Company, Inc. (TSJCI). <br /> The CAP and CAP Addendum are reapproved, as was previously approved by the EHD letter <br /> dated 15 February 2008. Provide the EHD a minimum 48-hour notification prior to the initiation <br /> of any field work. <br /> The EHD has also reviewed Work Plan for Evaluation of MTBE Migration and Soil Gas Survey <br /> (WP), dated April 2009, prepared by TSJCI in response to the EHD directive letter of <br /> 28 December 2009. TSJCI presented an evaluation of the potential for vapor intrusion issues <br /> related to the unauthorized release from your former underground storage tank (UST) system. <br /> TSJCI utilized the Environmental Screening Levels (ESLs) established by the San Francisco <br /> Bay Regional Water Quality Control Board to evaluate the potential for vapor intrusion issues <br /> and found the potential to be low. TSJCI also noted that, according to authoritative guidance <br /> documents, the soil conditions and high water table conditions at your site are not amenable to <br /> soil gas sampling for evaluating the vapor intrusion potential. TSJCI recommended not <br /> conducting a soil gas investigation and requested a written response from the EHD regarding <br /> this recommendation. The EHD accepts the conclusion of the vapor intrusion evaluation <br /> presented by TSJCI and does not require collection of soil gas samples. <br /> To comply with the recent State Water Resources Control Board Resolution 2009-0049,-yeti-the <br /> EHD approves sampling your monitoring wells on the following schedule: <br /> • Semi-annually — MW-3, MW-4, MW-7, MW-13, MWFP-1, MWFP-2, MWFP-3 and <br /> MWFP-4; <br /> Work Plan Approval Letter 0609 <br />