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28 February 2006 <br /> AGE-NC Project No. 06-1390 <br /> Page 3 of 6 <br /> • Report preparation <br /> The 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 SAMPLE COLLECTION AND ANALYSIS <br /> AGE proposes to advance one probe boring using direct push technology to assess impacted soil <br /> within the former UST excavation. The boring will be advanced to depth of approximately 25 feet <br /> below surface grade (bsg) or until ground water is encountered. As the boring is advanced, soil <br /> samples will be collected at 5-foot intervals beginning at 5 feet bsg and extending to the total depth <br /> of the probe boring. <br /> The proposed probe boring location is illustrated in Figure 2. Field procedures for advancement of <br /> probe boring and collection of soil samples are presented in Sections 4.1 and 4.2. <br /> Selected soil samples may be submitted for laboratory analysis. Selected samples will be analyzed <br /> by a State of California Department of Health Services(DHS)-certified laboratory for the following <br /> constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015M; <br /> • Benzene,toluene, ethylbenzene,and total xylenes(BTEX)and volatile organic compounds <br /> methyl-tertiary-butyl ether(MTBE),tertiary butyl alcohol(TBA),di-isopropyl ether(DIPE), <br /> ethyl tertiary-butyl ether (ETBE), tertiary-amyl methyl ether (TAME), 1,2-dichloroethane <br /> (1,2-DCA) and 1,2-dibromoethane (EDB) in accordance with EPA Method 8260. <br /> Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control <br /> (QA/QC) reports, and sample chain of custody documentation will be presented in a report with <br /> findings and recommendations. <br /> Advanced GeoEnvironmental,Inc. <br />