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I07 June 2000 <br /> AGE-NC Project No 99-0657 <br /> Page 2 of 7 <br /> custody to Alpha Analytical laboratories, Inc (AAL), a State of California Department of Health <br /> Services (DHS)-certified analytical laboratory <br />' <br /> 22 LOGGING <br /> Soil was extruded from a second brass sleeve or from the unpreserved portions of the soil in the core <br /> barrel samples and were screened for the presence of organic vapor using an organic vapor meter <br /> (OVM) equipped with a photo-ionization detector (PID Thermo Environmental 580A, 10 0 eV, <br />' calibrated to Xsobutylene), and the OVM readings were recorded on the boring log The soil was then <br /> visually described in accordance with the Unified Soil Classification System (see Appendix A) <br /> 1 <br /> 2 3 WELL AND BORING COMPLETION <br /> Borings MW l through MW3 were completed as ground water monitoring wells using two-inch <br /> diameter PVC casing with 0 020-inch slotted screen installed from approximately 50 feet to 30 feet <br /> bsg and with blank casing extended to the surface The filter pack (No 3112 Lonestar sand) was <br /> installed from 50 feet to approximately 28 feet bsg A nominal 3-foot bentonite pellet plug was then <br /> installed above the filter pack and hydrated Boring MW4 was also completed as a ground water <br />' monitoring well using two-Inch diameter PVC casing with 0 020-inch slotted screen installed from <br /> approximately 50 feet to 25 feet bsg with blank casing extended to the surface The filter pack (No <br /> 3112 Lonestar sand) was installed from 50 feet to approximately 23 feet bsg A nominal 2-foot <br /> Ibentonite pellet plug was then installed above the filter pack and hydrated The wells were then <br /> grouted to near the surface with portland cement Water-tight, traffic-rated well boxes were then <br /> installed over the wells As built well diagrams are depicted on the boring logs in Appendix A <br />' 24 LABORATORY ANALYSES OF SOIL SAMPLES <br /> Selected soil samples were analyzed for <br /> I - Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> accordance with EPA Method 8015 Modified, <br />' - Volatile aromatic hydrocarbons benzene, toluene, ethylbenzene and total xylenes (BTEX) <br /> in accordance with EPA Method 8020, and <br />' - Oxygenated compounds di-Isopropyl ether(DIPE), ethyl tertiary-butyl ether(ETBE),methyl <br /> tertiary-butyl ether(MTBE), tertiary-amyl methyl ether(TAME) and tertiary butanol (TBA) <br /> In accordance with 8260-Modified, respectively <br /> Advanced GeoBnvironmental,Inc <br /> 1 <br />