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i <br /> I24 January 2003 <br /> AGE-NC Project No 99-0657 <br /> Page 2 of 7 <br />' chain-of-custodyto Cal Tech Environmental Laboratories(CTEL),a State of California Department <br /> of Health Services (DHS)-certified analytical laboratory <br /> I212 Logging <br /> Soil was extruded from the remaining brass sleeves and was screened for the presence of organic <br /> I vapor using an organic vapor meter(OVM)equipped with a photo-ionization detector(PH) Thermo <br /> Environmental 580A, 10 0 eV, calibrated to isobutylene), the OVM readings were recorded on a <br />' boring log The soil was then visually described on the boring log in accordance with the Unified <br /> Soil Classification System (see Appendix B) <br /> I2 13 Well Completions <br /> IPilot borings MW5 through MW 8 were completed as ground water monitoring wells using two-inch <br /> diameter PVC casing with 0 020-inch slotted screen installed from approximately 30 feet to 50 feet <br /> bsg in all four borings with blank casing extended to the surface The filter pack (No 3 Lonestar <br /> Isand)was installed from approximately 28 feet to 50 feet bsg A nominal 3-foot bentonite chip plug <br /> was then installed above the filter pack and hydrated The wells were then grouted to near the surface <br />' with portland cement Water-tight, traffic-rated well boxes were then installed over the wells <br /> As-built well diagrams are depicted on the boring logs in Appendix B <br />' 2 14 Laboratory Analyses of Soil Samples <br />' Selected soil samples were analyzed for <br /> Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br />' accordance with EPA Method 8015M, <br /> Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl tertiary-butyl ether <br />' (MTBE) in accordance with EPA Method 8021, and <br /> a The fuel additives di-isopropyl ether (D1PE), ethyl tertiary-butyl ether (ETBE), MTBE, <br /> tertiary-amyl methyl ether(TAME), tertiary butanol (TBA), 1,2-dichloroethane(1,2-DCA) <br />' and ethylene dibromide (EDB) in accordance with EPA Method 8260B <br /> • <br /> IAdvanced GcoEnvironmental,Inc <br /> I <br />