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I <br /> z t <br /> 15 September 2005 <br /> �. AGE-NC Project No 98-0465 , <br /> Page 2 of 8 <br /> depicted on Figure 2 <br /> r <br /> I p <br />! 2 1 1 Soil Sample ColIectiori and Analysis <br /> Samples were collected from boring B1 at discreet 5-foot intervals from 5 feet bsg to 57 feet bsg, <br />' were refusal was encountered,using a 1 25-inch Geoprobe soil sampling assembly loaded with four <br /> 6-inch brass sleeves All sampling equipment was washed in an Alconox solution and rinsed twice <br /> with water prior to each sampling run For each soil sample collected,both ends of the second sleeve <br />' were covered with Teflon sheets, capped, and sealed with tape The samples were then labeled, <br /> stored on ice, and transported under chain of custody to Cal Tech Environmental Laboratories <br /> (CTEL),a State of California Department of Health Services(DHS)-certified analytical laboratory <br />' Selected 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 /> a Volatile aromatic compounds benzene, toluene, ethylbenzene, and xylenes (BTEX) in <br />' • accordance with EPA Method 8260B, <br /> a Fuel oxygenates MTBE, dl-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), <br /> tertiary-amyl methyl ether (TAME), and tertiary butanol (TBA) in accordance with EPA <br /> Method 8260B, and <br /> • Fuel scavengers ethylene dibromide(EDB)and 1,2-dichloroethane(1,2-DCA)in accordance <br /> with EPA Method 8260B <br /> r <br /> s , <br /> f <br />' 2"12 Soil Logging <br />' After sample preservation,soil was extruded from the remaining sleeves and field-screened utilizing <br /> an organic vapor analyzer,(OVA) equipped with a photo-ionization detector (PID Thermo <br /> Environmental 580B, 10 0 eV, calibrated to isobutylene) The soil was also described visually in <br />' accordance with the Unified Soil Classification System A soil boring log exhibiting the soil profile <br /> is included in Appendix B <br /> 1 <br /> 2 1 3 Grab Ground Water Collection and Analysis <br />' Discrete ground water samples were collected at first encountered ground water(22 to 26 feet bsg) <br /> • and second encountered ground water(33 to 40 feet bsg) The ground water samples were collected <br /> Advanced GeoEnveronmental,Inc <br /> r <br />