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' k 1 i' I 08 December 1998 ie AGE-NC Project No 95-0144 l Page 2 of 7 ' analytical laboratory Selected samples were analyzed for • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d), in accordance with EPA Methods 5030 and 8015m • Volatile aromatic hydrocarbons (benzene, toluene, ethylbenzene and total xylenes, BTEX) with methyl tertiary butyl ether (MTBE) in accordance with EPA Method 8020 •I ' Volatile organic compounds and oxygenated compounds ( di-isopropyl ether [DIPS], ethyl tertiary-butyl ether [ETBE], MTBE,tertiary-amyl methyl ether [TAME] and tertiary butanol ' [TBA]) in accordance with EPA Method 8260B 1 22 LOGGING k ' Soil was extruded from the second brass sleeve and screened for the presence of organic vapor using 'an organic vapor meter equipped with a photo-ionization detector (PID Thermo Environmental . 580A, 10 0 eV, calibrated to isobutylene), and the readings were recorded on the boring log The soil was then visually described in accordance with the Unified Soil Classification System(see Appendix A- Boring Logs) 2 3 WELL COMPLETION Each boring was overdrilled using 10-inch diameter hollow-stern augers to a total depth of SS,feet' bsg and was dual-completed as ground water monitoring wells Boring MW-19 was completed using ' two-inch diameter PVC casing with 0 020-inch slotted screen installed from 53 5 feet to 48 5 feet _ with blank casing e%tended to the surface The filter pack (No 3 Lonestar sand) was installed from 53 5 feet to 46 5 feet Bentonite"Pel Plug"was installed from 46 5 feet to 33 feet A second screened ' PVC casing was installed from 31 feet to 1 I feet with blank casing extending to the surface The filter pack was installed from 33 feet to 8 5 feet and bentonite pellets were installed from 8 5 feet to 7 5 feet and hydrated A stainless steel bailer was used to surge the well and set the,sand pack prior ' to the installation of each bentonite plug The well was then grouted from 7 5 feet to the surface with portland cement A water tight, traffic-rated well box was then installed over the well v ' Boring MW-20 was dual-completed with screened intervals installed from 55 to 50 feet bsg and from 32 to 12 feet bsg using the above-described completion details Boring MW-21 was dual-completed with screened intervals installed from 53 to 48 feet bsg and from 32 to 12 feet bsg using the above- described completion details For surveying, monitoring and sampling purposes,the upper screened . interval for each dual-completed well was labeled"A",while the lower screened interval was labeled 1 ' Advanced GeAn%iron mental Inc k