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t <br /> A groundwater sample will be collected from each soil boring using a hydropunch groundwater <br /> sampler. Following soil and groundwater sample collection, the borings will be backfilled with <br /> grout to the surface. All drill cuttings will be stored on site in 55-gallon drums, pending proper <br /> disposal. <br /> Sample Analysis <br /> All soil and groundwater samples from the soil borings will be immediately placed in a cooler <br /> with ice and delivered under chain-of-custody documentation to a State-certified analytical <br /> laboratory. Soil and groundwater samples will be analyzed for total petroleum hydrocarbons as <br /> gasoline (TPHg), benzene, toluene, ethylbenzene, and xylenes (BTEX) by EPA Methods <br /> 8015m/8020, and oxygenate fuel additives by EPA method 8260. <br /> Report Preparation <br /> Upon completion of the investigative activities, a summary report will be prepared for submittal <br /> to the EHD and Regional Water Quality Control Board. The report will include a description of <br /> all field activities, laboratory analytical results, and well/boring logs. <br /> All work described in this workplan will be performed under the direction.of,.a 'California;, <br /> Registered Professional:Engineer. All work will be performed in accordance;with zATC's:Site:;tI { <br /> Safety Plan (SSP) and Quality Control/Quality Assurance Plan already on file.with PHS/EHD for <br /> this site. <br /> Proiected Schedule <br /> Once approval of this workplan has been received, ATC will confirm a schedule for drilling <br /> activities. ATC will notify EHD at least 48 hours prior to beginning any field activities. The <br /> summary report will be submitted to EHD approximately four to five weeks after the completion <br /> of field activities. <br /> s:\22493\reports\Wkpl»_add_inv2005.doc 4 <br />