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1 <br />' 15 May 2004 <br /> • AGE-NC Project No 01-0815 <br />' Page 2 of 8 <br /> required to advance the sampler over each 6-Inch increment of the 18-inch sampling Interval was <br />' recorded on the boring logs After sample recovery,both ends of the second or other selected sleeve <br /> were covered with Teflon sheets, capped and sealed with tape The sample sleeves were labeled, <br />' stored on Ice and transported under chain-of-custody to Cal Tech Environmental Laboratories <br /> (CTEL), a State of California Department of Health Services(DHS)-certified analytical laboratory <br /> The sampling equipment was washed in an Alconox solution and rinsed with water prior to each <br /> sampling run to minimize cross-contamination <br />' 212 Logging <br />' Soil was extruded from a second brass sleeve and screened for the presence of organic vapor using <br /> an organic vapor meter (OVM) equipped with a photo-Ionization detector (PID Thermo <br /> Environmental 580B, 10 0 eV, calibrated to isobutylene), the OVM readings were recorded on the <br /> boring log The soil was then visually described in accordance with the Unified Soil Classification <br /> System (see Appendix B) <br /> 2 13 Well Completions <br />' Pilot borings MW 1,MW2 and MW3 were completed as groundwater monitoring wells using 2-Inch <br /> diameter PVC casing,with 0 020-inch slotted screen installed from approximately 25 feet to 45 feet <br /> bsg The filterpack(No 2112 Lonestar sand)was installed from approximately 23 feet to 45 feet bsg, <br /> and a nominal 2-foot bentonite chip plug was then installed above the filter pack and hydrated The <br /> wells were then grouted to near the surface with portland cement, and water-tight, traffic-rated well <br />! boxes were installed over the wells As-built well diagrams are depicted on the boring logs in <br /> Appendix B <br />' 2 1 4 Laboratory Analyses of Soil Samples <br />' Selected soil samples were analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br />' Method 8015 Modified, <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl tertiary-butyl ether <br /> (MTBE) in accordance with EPA Method 8020, <br /> Advanced GeoEnvironrnental,Inc <br />