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16 June 2003 <br /> AGE-NC Project No. 03-1042 <br /> Page 3 of 5 <br /> • Permitting and pre-field work activities; <br /> • The advancement of seven probe borings to approximately 25 feet bsg. <br /> • Soil sample collection and analysis; <br /> • Report preparation <br /> 3.1. PERMITTING AND PRE-FIELD WORK ACTIVITY <br /> Applicable site assessment permits will be submitted to the EHD and a health and safety plan will <br /> be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous <br /> Waste Site Activities (National Institute for Occupational Safety and Health Administration, U.S. <br /> Coast Guard and U.S. Environmental Protection Agency, 1985). Prior to mobilization, the area of <br /> excavation will be clearly marked and a utility clearance obtained through Underground Service <br /> Alert. <br /> 3.2. SOIL SAMPLE COLLECTION AND ANALYSIS <br /> AGE proposes to advance seven probe borings using direct push technology in the areas of the <br /> former AST and piping location, the in-ground scale pit, and the former boiler room location, to <br /> assess for petroleum hydrocarbon impacted soil beneath the site. The borings will be advanced to <br /> a depth of 25 feet below surface grade(bsg); the proposed probe boring locations may be modified <br /> due to field observations. As the borings are advanced, soil samples will be collected at 5-foot <br /> intervals beginning at 5 feet bsg and extending to the total depth of the probe boring. The proposed <br /> probe boring locations are illustrated in Figure 2.Field procedures for advancement of probe borings <br /> and collection of soil samples are presented in Sections 4.1 and 4.2. <br /> Selected soil samples from the probe borings will be analyzed by a State of California Department <br /> ofHealth Services(DHS)-certified laboratory.Selected soil samples from the AST and former boiler <br /> room locations will be analyzed for: <br /> • Total petroleum hydrocarbons (TPH-all)in accordance with EPA Method 8015M and <br /> • Volatile organic compounds,including benzene,toluene,ethylbenzene and xylenes(BTEX), <br /> and the fuel additives tertiarybutanol(TBA),di-isopropyl ether(DIPE),ethyl tert-butyl ether <br /> (ETBE), tert-amyl methyl ether (TAME), methyl tertiary- butyl ether (MTBE), <br /> 1,2-dichloroethane (1,2-DCA) and 1,2-dibromoethane (EDB) in accordance with EPA <br /> Method 8260B. <br />