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Y <br /> 18 August 2000 <br /> AGE-NC Project No . 00 - 0753 <br /> Page 2 of 5 <br /> The preliminary site assessment tasks are discussed below. <br /> 3 . 1 . PRE-FIELD WORK ACTIVITIES <br /> A health and safety plan will be prepared in accordance with Occupational Safety and Health <br /> Guidance Manual for Hazardous Waste Site Activities (National Institute for Occupational Safety <br /> and Health Administration, U. S . Coast Guard and U. S . Environmental Protection Agency, 1985) . <br /> Prior to mobilization, the area of excavation will be clearly marked and an utility clearance obtained <br /> through Underground Service Alert, <br /> 3 . 2 . SOIL SAMPLE COLLECTION AND ANALYSIS <br /> Initially, AGE proposes to advance five soil probe borings using direct push technology (DPT) to <br /> determine if petroleum hydrocarbon-impacted soil and/or ground water is present beneath the site. <br /> Proposed probe boring locations are -illustrated in Figure 2 . <br /> The proposed probe boring locations may be modified due to field observations or additional borings <br /> may be advanced with approval by the PHS -EHD . Each proposed probe borings will be advanced <br /> to 30 feet bsg or until the field observations and field screening using an organic vapor monitor <br /> (OVM) indicate that detectable petroleum vapors are not present in the soil samples screened from <br /> two consecutive five-foot intervals . <br /> Soil samples will be collected at 5400t intervals beginning at 5 feet bsg extending to the total probe <br /> boring depths . <br /> Field procedures for advancement of probe borings and collection of soil samples are presented in <br /> Sections 4 . 1 and 4 .2 . Selected soil samples from each probe boring will be submitted for laboratory <br /> analysis with concurrence of the PHS -EHD . The selected soil samples will be analyzed by a State <br /> of California Department of Health Services (DHS) -certified laboratory for the following <br /> constituents : <br /> • Total petroleum hydrocarbons as gasoline (TPH-g) , and total petroleum hydrocarbons as <br /> diesel (TPH-d) by EPA Method 8015odified/3550 ; <br /> • Volatile aromatic compounds (benzene, toluene, ethyl-benzene and total xylene : BTEX) , and <br /> methyl tertiary butyl ether (MTBE) by Method 8020 and; <br /> Advanced GeoEnvironmental, Inc. <br />