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San Joaquin County <br /> RECTOR <br /> DI <br /> Q N.. c Environmental Health Department Donna Heran,RENS <br /> — 'Oc 600 East Main Street <br /> PROGRAM COORDINATORS <br /> Q, Stockton, California 95202-3029 Robert McClellon,REHS <br /> Jeff Carruesco,REHS,RDI <br /> Kasey Foley,REHS <br /> Website:www•sjgov.org/ehd Unda Turkatte,REHS <br /> Phone: (209)468-3420 <br /> Fax: (209)464-0138 <br /> April 15, 2011 <br /> CHARLES MILLER <br /> USA GASOLINE <br /> 905 RANCHO CONEJO BLVD <br /> NEWBURY PARK CA 91320 <br /> JOCK STREIDL <br /> TESORO SIERRA PROPERTIES LLC <br /> 3450 SOUTH 344T" WAY, STE 201 <br /> AUBURN WA 98001-5931 <br /> Subject: 2132 Mariposa Road <br /> SITE CODE: 1669 <br /> Stockton, CA 95206 <br /> The San Joaquin County Environmental Health Department's (EHD) Local Oversight Program <br /> (LOP) staff has the soil and ground water <br /> referenced c ntam natedeunderg underground storage tank (UST) site activities at the above <br /> te since 1991 <br /> This site is currently out of compliance with regulatory directives. You have been directed to <br /> conduct ground water monitoring and sampling, to complete the site ground water investigation, <br /> and to submit a corrective action feasibility study. In the EHD letter dated August 7, 2008, a <br /> work plan was approved for the destruction of selected monitoring wells (MWs) and installation <br /> of more discretely screened replacement MWs. New MWs were installed, but only sampled <br /> once on November 11, 2008. The EHD has not received any ground water sample analytical <br /> results or reports for this site since April 4, 2009. <br /> The ground water monitoring and sampling is required to assess the full extent of ground water <br /> contamination and to evaluate contaminant concentration trends over time. The EHD directive <br /> letter dated June 22, 2009, set a schedule for the additional work to be performed. MWs were <br /> to be monitored and sampled. Monitoring, sampling., and reporting <br /> mustagenbey. The required <br /> Theli <br /> directed until site closure is granted by the appropriated regulatory <br /> monitoring, sampling, and reporting has not been met nor has the EHD been contacted with <br /> any request for extensions. <br /> EHD hereby directs you to resume the required monitoring, sampling, and reporting <br /> t be sampled, and based upon sample results (and with <br /> immediately. All monitoring wells mus <br /> terval/schedule should be established. When new <br /> EHD approval) a new sampling in <br />