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Advanced <br /> GeoEnvironment 1, AIT� �I� o <br /> 25 April 2003 MAY 0 6 2003 <br /> AGE-NC Project No..02-0962 <br /> ENV RONMENT HEALTH <br /> PERMIT/SERVICES <br /> Ms. Dina Abate <br /> San Joaquin County Environmental Health-D epartmeni <br /> 304 East Weber Avenue, Third floor <br /> Stockton, California 95202 <br /> Subject: Disposal Options for Stockpiled Hyd carbon-Impacted Soil <br /> VANCO TRUCK& AUTO PLAZA <br /> ova West Charter Way, Stockton, California <br /> Dear Ms. Abate: i <br /> At the request of Mr. David Atwater of Van De Pol Enterprises Inc.,Advanced GeoEnvironmental, <br /> Inc. (AGE) has prepared the following feasibility analysis for disposal and/or treatment of <br /> approximately 300 cubic yards of hydrocarbon-impacted soil stockpiled at the Vanco Truck&Auto <br /> Plaza, 1001 West Charter Way in Stockton, California (Figure 1), The stockpiled hydrocarbon- <br /> impacted soil was generated as a result of underground storate tank (UST) upgrade activities and <br /> excavation(performed byFillner Construction)ofUST s amps,fuel dispensers and associated piping <br /> in February 2003. <br /> According to San Joaquin County Environmental Hea th Department (SJCEHD) and California <br /> Regional Water Quality Control Board - CentraI Valley Region policy, the hydrocarbon-impacted ' <br /> stockpiled soil could not be reused as backfill material for the excavation cavity or transported to <br /> another property owned by the generator for off-site treati nent.Therefore,the hydrocarbon-impacted <br /> soil could be addressed by the following methods: <br /> • On-site treatment; or ' <br /> i <br /> • Off site transportation to a regulated landfill facility. <br /> Following the above referenced excavation activities at the site, soil.sainples'were collected from <br /> beneath the former locations of dispensers, piping from stockpiled soil; all soil sampling <br /> locations .were performed'-at the direction of the SJC HD. Laboratory analysis of soil samples <br /> detected elevated concentrations of total petroleum hydr 3carbons quantified as diesel(TPH-d),and r <br /> low concentrations oftotal petroleum hydrocarbons quant fled as gasoline(TPH-g),volatile aromatic <br /> compounds:benzene,toluene,ethylbenzene and xylenes(BTEX constituents)and methyl-tert butyl <br /> ether(MTBE).- <br /> r <br /> 4 <br /> a <br /> i <br /> 837 Shaw Road,Stockton, California 95215 . <br /> Telephone(209) 467-1006 FAX (209) 467-1118 <br /> l <br />