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0 • 08 November 2004 AGE-NC Project No. 04-1215 Page 3 of 4 After soil sample preservation, soil was extruded from the remaining sleeves and field-screened utilizing an organic vapor analyzer(OVA)equipped with a photo-ionization detector(PID: Thermo Environmental 580B, 10.0 eV, calibrated to isobutylene). The soil was also described visually in accordance with the Unified Soil Classification System. GROUND WATER SAMPLE COLLECTION A ground water sample was collected from soil boring B-I following soil sample collection.Depth discrete ground water samples were collected using a five-foot section of prc-cleaned, one-inch diameter 0.010-inch slotted PVC well screen attached to blank PVC extended to surface grade.Once the 55 foot soil sample was collected,the PVC was inserted into the boring and in-situ ground water samples were extracted using 3/8-inch diameter polyethylene tubing fitted with a check valve which was lowered through the hollow center of the PVC piping into the screened section and manually pumped. Ground water samples were collected into a one-liter amber glass container and into three laboratory-supplied 40-m1 volatile organic analysis (VOA) vials without sample preservative. The samples were labeled and stored on ice for transport to a DHS-certified laboratory for analysis. LABORATORY ANALYSIS OF SOIL AND GROUND WATER SAMPLES The collected ground water and soil samples were transported under chain of custody to Cal Tech Environmental Laboratories (CTEL), a State of California Department of Health Services (DHS)- certified analytical laboratory. Selected samples were analyzed for: • Total petroleum hydrocarbons quantified as gasoline and diesel(TPH-g and TPH-d)by EPA Method 8015 Modified; and • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl-tert-butyl-ether (MTBE) by EPA Method 8021. FINDINGS In general, soil encountered at the site was dark brown or orange brown silt, clayey silt or clay. The soil was predominantly dry, with moderate to high consistency, low plasticity and low toughness. Static ground water was measured at 46.75 feet bsg in boring B-1, however, the first saturated sample was recovered from 55 feet bsg. No petroleum hydrocarbon odors were detected in any of the borings. Advanced GeoEnvironmental,Inc.