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1 <br />' 22 February 1999 <br /> AGE-NC Project No 96-0263 <br />' Page 2 of 8 <br />' For each sample, both ends of the leading or chosen sleeve were covered with Teflon sheets, capped <br /> and sealed with tape The samples were labeled, stored on Ice and transported under chain-of-custody <br /> to McCampbell Analytical, Inc (MAI), a State of California Department of Health Services (DHS)- <br /> certified analytical laboratory <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 isobutylene), and the OVM readings were recorded on the boring log The soil was then <br /> Ivisually described in accordance with the Unified Soil Classification System (see Appendix A) <br />' 2 3 WELL AND BORING COMPLETION <br />' Borings MW I through MW8, with the exception of MW6, were completed as ground water <br /> monitoring wells using two-inch diameter PVC casing with 0 020-inch slotted screen installed from <br /> approximately 20 feet to 5 feet bsg and with blank casing extended to the surface The filter pack <br />' (No 2112 Lonestar sand) was installed from 20 feet to approximately 3 feet bsg A 2-foot bentonite <br /> pellet plug was then Installed above the filter pack and hydrated Boring MW6 was also completed <br /> as a ground water monitoring well using two-inch diameter PVC casing with 0 020-Inch slotted <br /> I screen installed from approximately 32 feet to 27 feet bsg with blank casing extended to the surface <br /> The filter pack(No 2/12 Lonestar sand) was installed from 32 feet to approximately 25 feet bsg A <br /> 2-foot bentonite pellet plug was then installed above the filter pack and hydrated The wells were <br />' then 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 in Appendix B <br /> 24 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 /> • Volatile aromatic hydrocarbons benzene, toluene, ethylbenzene and total xylenes (BTEX) <br /> with methyl tertiary-butyl ether (MTBE) in accordance with EPA Method 8020, and <br /> iOxygenated compounds di-isopropyl ether(DIPS),ethyl tertiary-butyl ether(ETBE),methyl <br /> Advanced GeoEnvironmental,Inc <br />