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' 02 October 2000 <br /> AGE-NC Project No 98-0465 <br /> Page 4 of 9 <br /> ' installed from 25 feet to approximately 3 feet bsg A nominal 2-foot bentonite chip plug was then <br /> installed above the filter pack and hydrated Boring MW3 was completed as a ground water <br /> monitoring well using two-inch diameter PVC casing with 0 020-inch slotted screen installed from <br /> ' approximately 24 feet to 4 feet bsg with blank casing extended to the surface The filter pack (No <br /> 3/12 Lonestar sand) was installed from 24 feet to approximately 3 feet bsg A nominal 2-foot <br /> bentonite chip plug was then installed above the filter pack and hydrated Water-tight, traffic-rated <br /> ' well boxes were then installed over the wells As-built well diagrams are depicted on the boring logs <br /> in Appendix A <br /> 34 LABORATORY ANALYSES OF SOIL SAMPLES <br /> ' Selected soil samples were analyzed for <br /> 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 /> and MTBE in accordance with EPA Method 8020, and <br /> • Oxygenated compound-di-isopropyl ether(DIPE),ethyl tertiary-butyl ether(ETBE),MTBE, <br /> terhary-amyl methyl ether (TAME) and tertiary butanol (TBA) in accordance with 8260- <br /> Modified, respectively <br /> 35 MONITORING WELL DEVELOPMENT ACTIVITIES <br /> ' On 17 July 2000, monitoring wells MW 1 through MW-4 were developed utilizing a stainless steel <br /> hand bailer and a two-stage submersible pump <br /> Ground water was purged from each monitoring well until ground water was visually sediment free, <br /> approximately 30 gallons of water were removed from each well Purged ground water was <br /> ' containerized in properly labeled D O T -approved model 17H 55-gallon drums and was stored on- <br /> site in an area lacking public access Field sheets and data are included in Appendix B <br /> ' 3 6 MONITORING WELL PURGE PROCEDURES <br /> ' Ground water sampling of the on site wells was conducted on 18 July 2000 For the sampling event, <br /> a Solinst water level meter was used to measure the depth to ground water in the four momtonng <br /> Advanced GeoEnvironmental,Inc <br />