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[ Y r 3 , r 1 28 April 1998 r AGE-NC-95-0103 I t Page 3 of 9 ' At the end of the quarter the SVE extraction system was reduced to a limited well network Wells VW-1 and VE-I were used selectively for extraction A sample was'collected fiom'the vapor stream to determine the maximum extraction possible from the site Vapor samples were collected in Tedlar bags from the Influent and effluent streams for the sample collected on 16 January 1998, subsequently, vapor samples were only collected from the Influent vapor stream for analysis The samples were labeled,placed in a cool Ice chest and transported under chain-of-custody to MAI The extracted soil gas samples were analyzed for TPH-g and BTE&X ' 2 4 ' MONITORING WELL INSTALLATION F e ' 2 4 1 DRILLING AND SAMPLING r ' On 01 April 1998, soil boring MW-7 was advanced on the property directly east of the site The boring location is Illustrated on Figure 2 The soil boring was advanced to a depth of 25 feet'bsg' Drilling was performed using a tractor-mounted limited access drill rig equipped with continuous flight, eight-inch, hollow-stem augers The drill rig and two-man crew were supplied by Soils Exploration Services of Sacramento California k 1 1 I { rF R ' Samples were collected at five-foot intervals in all borings, using a split tube sampler loaded with three clean, 2- by 6-Inch brass sleeves A 140-pound hammer was used to advance the sampler 18 inches, the number of blows required to advance thesampler in 6-inch increments was recorded on ' the'bohng logs All sampling equipment was washed in an Alconox solution and rinsed twice with E water prior,to each sampling run Soils amples were preserved by covering both ends of the brass sleeve with Teflon sheets,'capping ' and sealing with tae Sam'les les were stored in a chilled container and transported under chain-of- p P p custody to MAI Selected soil samples were analyzed for TPH-g, BTE&X, MTBE, TBA, DIPE, ETBE and TAME in accordance with EPA methods 8015m , 8020 and 8260m y 1 y 1 1_ 1 ' During drilling, auger returns were monitored for the presence of organic vapor (OV) using the, OVA 'Auger returns,were,stored in drums on-site pending laboratory analysis 1 1 2 4'3 SOIL DESCRIPTION AND I1LOGGING ' 1 ' Soil was extruded from the second brass sleeve and screened for the presence of OV, PID beadings I were 'recorded„on boring logs The soil wasr then described in accordance with the Unified Soil Classification S stem see Boring Logs, Appendix B ^ r Y � g' g PP ) , r 1 Advanced GeoEnviroamental Inc ,