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I30 March 2004 <br /> . AGE-NC Project No 02-0962 <br />' Page 3 of 7 <br />' 32 SOIL SAMPLE COLLECTION AND ANALYSIS M <br /> Samples were collected from the bonngs at discreet five-foot Intervals using a 1 125" Geoprobe soil <br /> sampling assembly loaded with four six-inch brass sleeves For each soil sample collected,both ends w <br /> of the second or other selected sleeve were covered with Teflon sheets,capped and sealed with tape <br /> The samples were labeled, stored on Ice and transported under chain-of-custody to Cal Tech <br />' Environmental Laboratories (CTEL) a State of California Department of Health Services (DHS)- <br /> certified analytical laboratory Selected samples were analyzed for <br /> • Total petroleum hydrocarbons as gasoline(TPH-g)and as diesel(TPH-d)in accordance with <br /> EPA Method 8015 Modified, and <br /> • Benzene,toluene,ethylbenzene and total xylenes(BTEX)and the fuel additives methyl-tert- <br /> Ibutyl ether (MTBE), tertiary butyl alcohol (TBA), di-isopropyl ether(DIPE), ethyl tertiary ' <br /> butyl ether (ETBE), tertiary amyl methyl ether (TAME),1,2-dibromoethane (EDB) and <br /> 1,2-dichloroethane (1,2-DCA) in accordance with EPA Method 8260B <br /> All sampling equipment was washed in an Alconox solution and rinsed twice with water prior to <br /> each sampling run <br /> 33 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 ry <br /> Environmental 580B, 10 0 eV, calibrated to isobutylene) The soil was also described visually In <br /> accordance with the Unified Soil Classification System Soil boring logs exhibiting soil profiles are <br /> Idepicted in Appendix A <br /> 3 4 _ GRAB GROUND WATER COLLECTION AND ANALYSIS r <br /> I <br /> After probing to a depth of 30 feet bsg, groundwater was found to beat approximately 20 to 25 feet <br /> bsg A `grab' ground water sample was collected from each boring except B3 The ground water <br /> sample was extracted by lowering an Inertia pump down a temporarily installed, one-inch diameter <br /> PVC casing with a 5-foot long,0 01-slotted well screen at the lower end, or a hydro punch sampling <br /> tool equipped with a 15 foot length of 0'01-slotted well screen Each ground water sample was <br /> transferred into three laboratory-supplied, 40-m1 volatile organic analysis (VOA)'vials containing <br /> 0 5 ml hydrochloric acid (18%) as sample preservative, and one laboratory-supplied 1-liter amber <br /> bottle without sample preservative After collection, the samples were properly labeled, placed in <br /> a chilled container and transported under chain-of-custody to CTEL The samples were analyzed for <br /> the same petroleum hydrocarbon products listed in Section 3 2 <br /> Advanced GeoEnvironmental,Inc <br /> I , <br />