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San Joaquin County
<br /> No. ' " Environmental Health Department DIRECTOR
<br /> Donna Heran, REHS
<br /> 600 East Main Street
<br /> '� - Stockton , California 955202-3029 PROGRAM COORDINATORS
<br /> Robert McClellon, REHS
<br /> Jeff Carruesco, REHS, RDI
<br /> C P Kasey Foley, REHS
<br /> Website: ww 09)468m3420 hd Linda Turkatte, REHS
<br /> Phone: (209) 468-3420
<br /> Fax: (209) 464-0138
<br /> October 18, 2011
<br /> Mr. David Atwater
<br /> Van De Pol Enterprises , Incorporated
<br /> Post Office Box 1107
<br /> Stockton , California 95201
<br /> Subject: Pacific Pride — South EI Dorado Street
<br /> 3147 South EI Dorado Street
<br /> Stockton, CA 95206
<br /> Dear Mr. Atwater:
<br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed
<br /> Remedial Action Work Plan — August 2011 (work plan), dated 16 August 2011 , prepared by
<br /> your consulting firm , Advanced GeoEnvironmental , Inc. (AGE), on your behalf for the above-
<br /> referenced site. In * the work plan , AGE proposes to install two additional dual phase
<br /> extraction (DPE) wells and install , operate and maintain a DPE remediation system that
<br /> incorporates existing soil vapor extraction wells VW-1 through VW-3, and monitoring well
<br /> MW-7. The EHD had directed the submittal of this work plan by letter dated 28 June 2011 .
<br /> During the advancement of the two pilot borings to approximately 40 feet below surface grade
<br /> (bsg ) during the installation of the DPE wells , AGE proposes to collect soil samples at five-foot
<br /> intervals, beginning at ten feet bsg , for lithologic evaluation and chemical analysis. AGE
<br /> proposes to analyze selected soil samples for total petroleum hydrocarbons as gasoline
<br /> (TPH-g); total petroleum hydrocarbons as diesel (TPH-d ) ; benzene, toluene, ethylbenzene
<br /> and total xylenes (BTEX); methyl tertiary-butyl ether (MTBE), ethyl tertiary-butyl ether (ETBE) ,
<br /> di-isopropyl ether (DIPE) , tertiary-amyl methyl ether (TAME), tertiary butyl alcohol (TBA), 1 ,2-
<br /> dibromoethane (EDB), 1 ,2-dichloroethane (1 ,2-DCA) and lead . AGE proposes to install the
<br /> DPE wells with screen intervals between approximately 10 and 40 feet bsg at locations
<br /> illustrated on Figures 2 and 3 of the work plan .
<br /> The EHD approves the installation of the two DPE wells as presented in the work plan.
<br /> Please submit a Well and Boring Permit Application , Master File Record Information form, and
<br /> permit/inspection fees to the EHD and complete the well installations by 06 December 2011 .
<br /> Prior to operating the remedial system , AGE proposes to establish baseline concentrations of
<br /> contaminants of concern by collecting groundwater samples from the two newly-installed DPE
<br /> wells , VW-1 through VW-3, and MW-7. AGE proposes to analyze the groundwater for TPH-g ,
<br /> TPH-d , BTEX , MTBE , ETBE, DIPE , TAME , TBA, EDB and 1 ,2-DCA.
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