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I <br />' 30 September 2005 <br /> AGE-NC Project No 97-0333 <br />' Page 3 of 6 <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d, <br />' respectively) by EPA Method 5030/8015M, <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) by EPA Method 8260, <br />' • Ethylene dibromide (EDB), 1,2-dichloroethane (1,2-DCA), tertiary butanol (TBA), di- <br /> isopropyl ether (DIPE), ethyl tert butyl ether (ETBE), tert amyl methyl ether (TAME) and <br />' methyl tertiary butyl ether(MTBE) by EPA Method 8260B, and <br /> • Total lead by EPA Method 6010B <br />' None of the above constituents of concern were detected from the laboratory analysts The laboratory <br /> report (Cal Tech Environmental Laboratory I D 0508-007-2) and chain-of-custody forms are <br />' included in Appendix B <br />' 2 2 EQUIPMENT DECONTAMINATION <br /> All core barrel drill assembly casings were steam cleaned prior to each bore hole advancement <br />' Rinseate generated from decontaminating the equipment was placed in properly labeled DOT- <br /> approved model 17H 55-gallon drums and was stored on-site in an area lacking public access <br />' <br /> 23 BORING LOGS <br />' As stated above, soil samples were not collected during drilling activities for MW-13 through <br /> MW-15 Boring logs for wells MW-13 through MW-15 are included with Appendix C and document <br />' the completion of each well <br />' 2 4 MONITORING WELL COMPLETION <br /> Prior to advancing the soil borings for wells MW-13 through MW-15, an 8-inch diameter steel <br />' conductor casing was installed at each of the above referenced well locations,each conductor casing <br /> was place inside a twelve-inch diameter borehole to eleven feet bsg, the annual space between the <br /> conductor casing and the walls of the soil boring were backfilled with a portland cement grout,and <br />' allowed to settle for a minimum of 24 hours before drilling/well installation activities commenced <br /> Soil borings MW-13 through MW-15 were completed as ground water monitoring wells utilizing <br />' 1 7-inch diameter continuous polyethylene multichannel tubing (CMT) The inside of the CMT <br /> • consisted of seven %a-inch diameter chambers (Figure 5), AGE utilized six of the seven CMT <br /> IAdvanced GeoEnvironmental,Inc <br /> I <br />