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�Claytori <br /> r V'er, <br /> Ms. Margaret Lagorio Page 4 <br /> San Joaquin County EHD Clayton Project No. 70-05669.00 <br /> April 27, 2005 <br /> placed into a chilled ice chest for transportation to the analytical laboratory. Chain of <br /> custody documentation will also accompany the groundwater samples to the laboratory. <br /> Soil borings will be backfilled with a bentonite slurry. Wastes generated during the field <br /> activities will consist of soil cuttings that will be stored on-site pending disposal. <br /> Drilling equipment will be cleaned prior to and after drilling each boring. Drilling and <br /> soil sampling equipment will also be cleaned between coring intervals using a triple rinse <br /> method. The initial rinse will consist of an Alconox and water solution, followed by a tap <br /> water rinse and deionized water rinse. Deionized water will be used during the final <br /> (third) rinse. Decontamination wastewater will be pumped from the driller's self- <br /> contained decontamination unit, if utilized, and placed into 5-gallon buckets or 55-gallon <br /> waste drums. <br /> LABORATORY ANALYSIS <br /> Laboratory analyses will be performed by a California-state certified analytical <br /> laboratory. The soil samples will be analyzed for the following compounds: <br /> • Volatile organic compounds (VOCs) and fuel oxygenates by USEPA Method <br /> 8260B <br /> • California Assessment Metals (Cam 17 metals) <br /> • Total petroleum hydrocarbons (TPH) as gasoline (TPHg), TPH as diesel(TPHd), <br /> and TPH as motor oil(TPHo)using EPA Method 8015M. <br /> • Organochlorine pesticides and polychlorinated biphenyls (PCBs) using USEPA <br /> Method 8080A. Note that only the shallowest soil sample from each boring will <br /> be submitted for organochlorine pesticides and PCBs. , <br /> If groundwater is encountered, a grab groundwater sample will be collected and analyzed <br /> for VOCs and TPH. <br /> REPORT PREPARATION <br /> Upon project completion of the field activities and receipt of the laboratory analyses, <br /> Clayton will prepare a written report summarizing the findings of work performed at the <br /> subject property. The report will include a description of the subject property, summary <br /> of investigative methodologies, analytical results, findings, conclusions, and <br /> recommendations. In addition, tables will be provided showing the analytical results, as <br /> 5�TROMCTSVerimn Wirela000S05669 Asile Phae 114orkpin.doe <br />