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s 5 1 r <br /> r <br /> S v <br />' 30 May 1997 <br /> . AGE-NC Project No 95-0142 <br /> Page 3 of 6, <br /> Soil samples were preserved by covering both ends of the brass sleeve with Teflon sheets, capping <br />' and sealing with tape Samples were stored to a chilled container and transported under chain-of- <br /> custody to MAI Selected samples were analyzed for total,petroleum hydrocarbons quantified as <br /> gasoline (TPH-g), volatile aromatics (benzene, toluene, ethyl benzene and xylenes BTE&X) and - <br />' methyl-tert-butyl ether (MTBE) in accordance with EPA methods noted above <br />' Auger returns were stored on-site in DOT H-17 storage drums pending laboratory analysis and <br /> proper disposal <br /> 24 s3 SOIL DESCRIPTION AND LOGGING <br />' During drilling, soil was extruded from the second brass sleeve and screened for the presence of <br /> organic vapor (OV) using a photo-ionization detector(PID Thermo Environmental 580A, 10 0 eV, <br /> calibrated to lsobutylene) PID readings were recorded on boring logs The soil was then described <br />' in accordance with the Unified Soil Classification System (see Appendix B) <br />�. 2 4 4 WELL COMPLETION <br /> Boring MW-5 was completed as ground water monitoring well MW-5 The well was completed <br /> using 2-inch diameter schedule 40 PVC casing with 0 02-inch slotted screen from approximately 25 <br /> feet to 45-feet bsg A filter pack was installed using 42 Lonestar sand from'23 to 45 feet bsg <br /> Benfonite chips were used to make a two-foot plug and the remaining annular space was backfilled' <br /> to the surface with Portland cement <br /> A traffic-rated well box (8-'inch diameter) was installed over each well, in accordance with county <br /> regulations An as-built monitoring well diagram is depicted in Appendix C <br /> r z <br /> 2 4 5 MONITORING WELL DEVELOPMENT AND PURGING PROCEDURES <br />' On 28 April 1997, the newly installed monitoring well MW-5 was developed using a submersible <br /> pump,to removed,silt and fine sediment from the well filter pack and casing Approximately fifty- <br /> five gallons of water were removed from monitoring well MW-5 Purged water was stored on-site i <br /> in labeled 55-gallon drums <br /> On 29 April 1997, a Solinst water level meter was used to measure the depth to ground water in <br /> . monitoring well MW-5 After measuring ground water depth, a minimum of three well volumes of <br /> water were removed from MW-5 using a submersible pump Approximately twenty gallons of water <br /> I <br />