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-1.�...la,ton <br /> Ms. Devra Lewis Page 7 <br /> RWQCB Clayton Project 70-03759.00 <br /> July 31,2004 <br /> 3.4.6 Equipment Decontamination and Waste Management <br /> All down-hole equipment(hollow stem auger drill stems and Geoprobe rods) and <br /> downhole sampling equipment will be either steam cleaned or washed in a solution of <br /> non-phosphate detergent and double rinsed with tap water after each use. <br /> The decontamination water will be containerized in 55-gallon drums meeting United <br /> States Department of Transport(DOT) approval for highway transportation. The drums <br /> will be sealed, labeled with content information and generation date, and stored onsite <br /> pending future disposal. The decontamination water will be composite sampled and <br /> analyzed by the laboratory for waste disposal profiling. Once the data is reviewed, an <br /> appropriate method of disposal will be selected. <br /> The soil cuttings generated during the subsurface investigation will be stockpiled on <br /> plastic sheeting and securely covered. Clayton will collect up to four discrete soil <br /> samples from the stockpiled soil cuttings. The soil samples will be composited by the <br /> laboratory and analyzed as one sample for waste disposal profiling. Once the data is <br /> reviewed, an appropriate method of disposal will be selected. <br /> 3.4.7 Laboratory Analytical Testing <br /> At least one soil sample from each shallow soil boring will be submitted for analysis. If <br /> petroleum hydrocarbon impacts in soil are identified,then additional soil and/or <br /> groundwater samples may be submitted for analysis. All samples selected for analysis <br /> will be submitted to a state-certified laboratory. All submitted samples will be analyzed <br /> according to the following methods: <br /> • TPH quantified as diesel and crude oil(TPH-d and TPH-cr)using USEPA <br /> Method 8015M; <br /> • Benzene, toluene,ethylbenzene, and xylenes(BTEX compounds)using USEPA <br /> Method 8021B. <br /> Selected samples from areas of petroleum hydrocarbon impact will also be analyzed <br /> according to the following method: <br /> • Polyaromatic hydrocarbons(PAHs) according to USEPA Method 8270. <br /> 3.5 SITE SAFETY AND HEALTH PLAN <br /> Clayton has prepared a Site Safety and Health Plan(SSHP)to reflect the work proposed <br /> at the subject property. The SSHP will be kept on-site and details the scope of work to be <br />