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05 October 2004 <br /> AGE-NC Project No.04-1215 <br /> Page 3 of 5 <br /> • Permitting and pre-field work activities; <br /> • Soil and grab ground water sample collection and analysis; <br /> • Report preparation <br /> The preliminary site assessment tasks are discussed below. <br /> 3.1. PRE-FIELD WORK TASKS <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 a utility clearance obtained <br /> through Underground Service Alert. <br /> 3.2. SOIL AND GRAB GROUND WATER SAMPLE COLLECTION AND ANALYSIS <br /> AGE proposes to advance six probe borings using direct push technology in the areas of the former <br /> diesel UST, former service station USTs, and piping and fuel dispensers locations to assess for <br /> petroleum hydrocarbon-impacted soil and ground water beneath the site.Four of the borings will be <br /> advanced to a depth of 15 feet bsg, one boring will be advanced to 25 feet bsg and one boring will <br /> be advanced to ground water; the proposed probe boring locations and depths may be modified due <br /> to field observations. As each boring is advanced, soil samples will be collected at 5-foot intervals <br /> beginning at 5 feet bsg and extending to the total depth of the probe boring. <br /> The proposed probe boring locations are illustrated in Figure 2. Field procedures for advancement <br /> of probe borings and collection of soil and grab ground water samples are presented in Sections 4.1 <br /> and 4.2. <br /> Selected soil and grab ground water samples from each probe boring will be submitted for laboratory <br /> analysis. The selected soil samples will be analyzed by a State of California Department of Health <br /> Services (DHS)-certified laboratory for one or more the following constituents: <br /> • Total petroleum hydrocarbons (TPH-all) in accordance with EPA Method 8015M. <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl-tert-butyl-ether <br /> (MTBE) by EPA Method 8021. <br /> Advanced GeoEnvironmental,Inc. <br />