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10 July 2007 <br /> AGE-NC Project No. 06-1524 <br /> Page 3 of 5 <br /> 3.1. PRE-FIELD WORK "TASKS <br /> A health and safety plan will be prepared in accordance with Occuj?alional Safely coat/ Ilealth <br /> Guidance ,Vanutd,for Hazardous Waste Site Activilies (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 a single soil probe boring using direct push technology near the former <br /> UST excavation. The boring will be advanced to approximately 20 feet bsg. Soil samples will be <br /> collected at 5-foot intervals beginning at 5 feet bsg and extending to the total depth of the probe <br /> boring. The proposed probe boring location is illustrated on Figure 1. Field procedures for <br /> advancement of the probe boring and collection of soil samples are presented in Sections 4.1 and 4.2. <br /> Selected soil samples boring may be submitted for laboratory analysis. Samples selected for analysis <br /> will be analyzed by a State of California Department of Health Services (DHS)-certified laboratory <br /> for some or all of the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g)in accordance with EPA <br /> Method 8015M; and <br /> • Volatile organic compounds,including benzene,toluene,ethylbenzene and xylenes(BTEX), <br /> methyl tertiary-butyl ether (MTBE) and 1,2-DCA, 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 /> 3.3. GRAB GROUND WATER SAMPLE COLLECTION AND ANALYSIS <br /> If ground water is encountered in the boring, a grab sample will be collected during the boring <br /> process using a Geoprobe water sampling assembly. Samples will be collected into 40-m1 volatile <br /> organic analysis(VOA)vials and 1-liter amber bottles as appropriate for the required analyses,both <br /> without preservative; ground water sample collection procedures are presented in Section 4.1. <br /> Ground water samples maybe analyzed by a DHS-certified laboratory for the constituents listed in <br /> section 3.2. <br /> Advanced GeoEnvironmental,inc. <br />