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pU Y{P <br /> f <br /> J p <br /> Page 6 <br /> San Joaquin County <br /> November 6, 2008 Project Number 99008-008321.03 <br /> Decontamination and Waste Containerization <br /> Drilling equipment and down-hole sampling equipment will be either steam cleaned or washed in a <br /> solution of non-phosphate detergent, double rinsed with tap water after each use, and allowed to dry. <br /> Rinse water and soil cuttings will be containerized in 5-gallon buckets or Department of Transportation <br /> (DOT) approved 55-gallon waste drums. Upon containerization, the wastes will be labeled with the <br /> appropriate information and temporarily stored onsite for future disposal pending receipt of the analytical <br /> results. Upon completion of sample collection, each borehole will be grouted in accordance with the <br /> approved methods mandated by the local regulatory agency. <br /> TASK 3: LABORATORY ANALYSES <br /> Bureau Veritas proposes to collect a total of up to 2 soil, 6 grab-groundwater, and 6 soil vapor samples <br /> for chemical analysis during this investigation. The collected samples are proposed to be analyzed using <br /> one or more of the following USEPA Methods: <br /> Soil Samples <br /> • VOCs by Method 8260B—2 soil samples <br /> • TPH Multiscan quantified by gasoline (TPH-g), diesel (TPH-d) and motor oil (TPH-mo) by Method <br /> 8015M—2 soil samples <br /> Soil samples will be submitted for chemical analysis of based upon field PID headspace screening, soil <br /> recovery and physical observations. Should no field evidence of soil contamination be encountered <br /> during the collection of soil samples, Bureau Veritas proposes to submit the soil sample collected from <br /> approximately ten feet bgs or the likely depth of a potential release. Soil samples will be analyzed on <br /> standard laboratory turn around time. <br /> Groundwater Samples <br /> • VOCs by Method 8260B—6 grab-groundwater samples <br /> • TPH Multiscan by Method 8015M—6 grab-groundwater samples <br /> Soil Vapor Samples <br /> • VOCs by Method TO-15—6 soil vapor samples <br /> Collected soil vapor samples submitted for chemical analyses are proposed to be analyzed for the <br /> parameters specified in Task 2 using a fixed laboratory. <br /> TASK 4: REPORTING <br /> Bureau Veritas will submit boring logs and analytical results, as required. <br /> If you have any questions or concerns, please contact Donald Ashton at 925-426-2679. <br /> SAES\PROJECTS\3-Chicago[99](15-16)\Wa1green Reports\99008-008321.01 StocktonTMorkplan.doc <br />