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17 June 2003 AGE-NC Project No. 03-1043 Page 3 of 6 3.1. PERMITTING AND PRE-FIELD WORK ACTIVITY Applicable site assessment permits will be submitted to the EHD and a health and safety plan will be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities (National Institute for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, 1985). Prior to mobilization, the area of excavation will be clearly marked and a utility clearance obtained through Underground Service Alert. 3.2. SOIL SAMPLE COLLECTION AND ANALYSIS AGE proposes to advance EjEht arobe borings using direct push technology to assess for petroleum hydrocarbon and hazardous waste impacted soil beneath the site.Borings will be advanced to a depth of 10 feet below surface grade(bsg)in the areas of the former hazardous materials storage location, the north boundary of the asphalt-paved yard,the pad mounted transformer and the"low lying area" east ofthe warehouse,and advanced to ground water along the western and southwestern boundaries of the property,the proposed probe boring locations may be modified due to field observations.As the borings are advanced, soil samples will be collected at 5-foot intervals beginning at 5 feet bsg and extending to the total depth of the probe boring. The proposed probe boring locations are illustrated in Figure 2. Field procedures for advancement of probe borings and collection of soil samples are presented in Sections 4.1 and 4.2. Selected soil samples from the probe borings will be analyzed by a State of California Department ofHealth Services(DHS)-certified laboratory.Selected soil samples from the western, southwestern and northern boundaries, the hazardous materials storage area and the "low lying area" will be analyzed for: • Total petroleum hydrocarbons (TPH-all) in accordance with EPA Method 8015M, and • Volatile organic compounds,including benzene,toluene,ethylbenzene andxylenes(BTEJ), and the fuel additives tertiarybutanol(TBA),di-isopropyl ether(RIPE),ethyl tert-butyl ether (ETBE), tert-amyl methyl ether (TAME), methyl tertiary- butyl ether (MTBE), 1,2-dichloroethane (1,2-DCA) and 1,2-dibromoethane (EDB) in accordance with EPA Method 8260B. Soil samples from the pad mounted transformer area will be analyzed for polychlorinated biphenyls (PCBs) in accordance with EPA Method 8080. In addition, selected soil samples from soil borings in the northern boundary and the "low lying" areas will be analyzed for CAM 17 metals in accordance with EPA Method 6010.