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1 <br />' 18 February 2003 <br /> AGE-NC Project No 96-0229 <br /> Page 2 of 9 <br />' augers All soil cuttings generated from drilling activities were containerized in properly labeled <br /> DOT-approved model 17H 55-gallon drums and stored on-site in an area Iacking public access, <br /> monitoring well locations are depicted in Figure 2 <br /> I <br /> 2 1 1 Soil Sampling and Analysis <br /> Discrete soil samples were collected at 5 foot intervals beginning at 5 feet bsg to total depth of each <br />' boring Soil samples were collected from MW-11 and MW-12 utilizing a California split-spoon <br /> sampler loaded with 2-inch by 6-inch brass sleeves,the sampler was driven by dropping a 140-pound <br /> weight from a height of 30 inches The number of blows required to drive each 6-inch length of the <br /> sampler (blow counts) was recorded on boring logs by an AGE staff geologist, boring logs are in <br /> Appendix B <br /> Soil samples were preserved by covering both ends of the second brass sleeve with Teflon sheets, <br /> then capping and scaling the ends with tape Each preserved sample sleeve was labeled with soil <br /> boring designation, depth, time, date and sampler's initials <br /> • Each preserved soil sample was logged on a chain-of-custody form,placed in a chilled container and <br /> transported to a California Department of Health Services (DHS)-certified laboratory, selected <br /> samples were analyzed for <br /> i <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) by EPA Method 8015M, <br />' • Benzene,toluene, ethylbenzene, xylene(BTEX) and methyl-tertiary butyl ether(MTBE)by <br /> EPA Method 8020, <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 /> confirmation of MTBE by EPA Method 8260 Modified, and <br /> • Total Lead by EPA Method 7420 <br /> 2 12 Sample Logging <br /> During drilling activities, soil sample duplicates were monitored for the presence of organic vapor <br /> using an organic vapor meter equipped with a photo-ionization detector (PID Thermo <br /> Environmental 580A, 10 0 eV,calibrated to isobutylene)and were visually described on boring logs <br /> . in accordance with the Unified Soil Classification System (USCS) Boring logs from MW-11 and <br /> MW-12 are included as Appendix B <br /> I <br /> Advanced GeoEnvtronmental,Inc <br />