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. 02 May 2001 <br /> AGE-NC Project No 97-0301 <br /> Page 5 of 7 <br /> 3 1 PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable site assessment permits will be obtained from the PHS-EHD In addition, an update to <br /> the health and safety plan presently on-file will be prepared in accordance with Occupational Safety <br /> and Health Guidance Manual for Hazardous Waste Site Activities (National Institute for <br /> Occupational Safety and Health Administration, U S Coast Guard and U S Environmental <br /> Protection Agency, 1985) Prior to mobilization,the monitoring well location will be clearly marked <br /> and a utility clearance obtained through Underground Service Alert <br /> 3 2 CPT DRILLING AND GRAB GROUND WATER SAMPLE COLLECTION <br /> AGE proposes to drill six CPT soil borings at the site to define the vertical extent of hydrocarbon- <br /> impacted ground water Proposed CPT soil boring locations are illustrated in Figure 2 <br /> Based on petroleum-impacted soil and ground water encountered during previous investigations, <br /> AGE proposes CPT soil borings in the following locations <br /> • Between 5 and 10 feet north of groundwater monitoring well MW-5 (P-5), <br /> • Between 15 to 25 feet east of ground water monitoring well MW-6 (P-6), <br /> • Between 10 to 20 feet north of ground water monitoring well MW-7 (P-7), <br /> • Between 40 to 60 feet south of ground water monitoring well MW-7 (P-8), <br /> • Between 60 to 80 feet north of ground water monitoring well MW-7 (P-9), and <br /> • Between 50 to 60 feet east of ground water monitoring well MW-7 (P-10) <br /> The CPT borings shall be advanced to approximately 125 feet bsg utilizing a 25-ton truck-mounted <br /> CPT drill ng equipped with 2-inch diameter hollow-stem rods, however, total depths of the borings <br /> may vary in response to hydrogeologic conditions encountered and the results of field screening <br /> during drilling activities <br /> Grab ground water samples will be collected in intervals of porous and permeable material Selected <br /> ground water samples will be analyzed by a State of California Department of Health Services <br /> (DHS)-certified laboratory for the following constituents <br /> • TPH-g, TPH-d, TPH-k and TPH-mo by EPA Methods 3550/5030/8015M, <br /> • BTEX compounds with MTBE by EPA Method 8020, and <br /> i <br /> Advanced GeoEnvsronmental,Inc <br />