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Atlantic Richfield Company 3 <br /> ARCO#5450,1617 West Print Street,Stockton,Califmia November 20,2001 <br /> California Occupational Health and Safety Administration <br /> (Cal-OSHA) "Hazardous Waste Operations and Emergency Response" <br /> guidelines (CCR Title 8, Section 5192), SECOR has prepared a Site- <br /> Specific Health and Safety Plan prior to the commencement of <br /> fieldwork. The Site-Specific Health and Safety Plan will be reviewed <br /> by the field staff and contractors before beginning field operations at <br /> the site and is included as Attachment C. <br /> • Permitting. Permits for the soil borings will be obtained from the <br /> SJCPHS. <br /> • Soil Borings. Three soil borings will be drilled at the locations shown <br /> on Figure 2 using 8-inch diameter hollow-stem augers. The soil <br /> borings will be drilled to a total depth of approximately 20 feet bgs. <br /> Soil samples will be collected at five-foot intervals. Groundwater <br /> samples will be collected from each boring at fust encountered <br /> groundwater using a hydrropunch or similar type of sampling device. <br /> Based upon historical data, groundwater is anticipated to be <br /> encountered at 10-12 feet bgs. Upon completion,the borings will be <br /> tremie grouted to one foot below grade with neat cement and finished <br /> to match the surrounding surface grade. <br /> • Soil Sample Analysis. Soil samples will be collected at 5-foot <br /> intervals and will be sent under chain-of-custody procedures to a <br /> California State-certified laboratory. Soil showing positive readings <br /> on a PID or at least one sample for every ten feet of drilling will be <br /> analyzed for TPHg using modified EPA Method 8015,benzene, <br /> toluene,ethylbenzene, and xylenes (BTEX)by EPA Method 8020, and <br /> for MtBE,DIPS,TAME,EtBE,TBA, 1,2 DCA, and EDB (fuel <br /> oxygenates)by EPA Method 8260. <br /> • Groundwater Sample Analysis. The groundwater samples collected <br /> from the soil borings will be analyzed for TPHg using modified EPA <br /> Method 8015,BTEX using EPA Method 8020, and fuel oxygenates <br /> MtBE,DIPE,TAME,EtBE,TBA, 1,2 DCA, and EDB by EPA <br /> Method 8260. <br /> • Soil and Water Disposal. Soil cuttings generated during drilling <br /> operations will be temporarily stored onsite and covered with plastic <br /> sheeting pending characterization and disposal. Soil cuttings will be <br /> removed by ARCO's disposal contractor to an appropriate disposal <br /> facility. Water generated during steam cleaning will be temporarily <br /> stored in DOT-approved 55-gallon drums pending transport by <br /> ARCO's disposal contractor to an appropriate disposal or treatment <br /> facility. Soil cuttings and purge water drums will be temporarily <br /> stored onsite for approximately 4 to 8 weeks. <br /> kARC'&54501workph=\ARC0 5450 WP <br />