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17 February 2006 <br /> AGE-NC Project No. 05-1256 <br /> Page 4 of 10 <br /> • Pilot drilling and soil sample collection; <br /> • Monitoring well installation and development; <br /> • Laboratory analysis of soil samples; <br /> • Quarterly ground water sampling and analysis; and <br /> • Preparation of a report of findings. <br /> 3.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable site assessment permits will be obtained from the EHD.In addition,an update to the site <br /> health and safety plan presently on-file will be prepared in accordance with Occupational Safety and <br /> Health Guidance Manual for Hazardous Waste Site Activities (National Institute for Occupational <br /> Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, <br /> 1985). Prior to mobilization, the proposed well locations will be clearly marked and a utility <br /> clearance obtained through Underground Service Alert. <br /> 3.2. CPT DRILLING AND SAMPLE COLLECTION <br /> AGE proposes to advance one paired CPT soil boring (CPT-1) at the site as part of the site <br /> assessment activities. The proposed CPT soil boring location is illustrated on Figure 2. The CPT <br /> boring will be advanced to characterize lithology and model potential contaminant migration <br /> pathways to assess the vertical extent of hydrocarbon-impacted soil and ground water. Based on the <br /> distribution of hydrocarbons encountered to date during the ongoing investigation, AGE proposes <br /> to advance the CPT soil boring approximately 17 feet southwe9t'8f the current UST area. <br /> vm 313j0Z <br /> The first boring at the proposed location will be a CPT borehole;the CPT will acquire a continuous <br /> lithologic record to define the hydrologic units. A second boring,adjacent to the first borehole,will <br /> be subsequently advanced to acquire soil and grab ground water samples in targeted zones based on <br /> interpreted lithologic data and assessment needs. The boring will be advanced to approximately <br /> 100 feet bsg.Total depth of the boring may vary according to hydrogeologic conditions encountered <br /> during drilling activities. <br /> Ground water and selected soil samples will be analyzed by a California Department of Health <br /> Services (DHS)-certified laboratory for: <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d, <br /> respectively) in accordance with EPA Method 8015M; and <br /> Advanced GeoEnviron mental,Inc. <br />