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Y ' 10 May 2004 • AGE-NC Project No. 98-0520 Page 2 of 6 Soil samples were preserved by covering both ends of the leading, soil-filled brass sleeve with, ' Teflon sheets,capping, and sealing with tape. Then each sample sleeve was labeled with soil probe boring location, depth, time, date and sampler's initials. The samples were logged on a chain=of- ' custody form,placed in a chilled container and subsequently transported to Cal Tech Environmental' Laboratories (CTEL), a State of California Department of Health Services (DHS)-certficd laboratory. The remaining soil was removed from the brass sleeves and was screened for the presence of organic. vapor using an organic vapor meter(OVM)equipped with a photo-ionization detector(PID:Thermo Environmental 580B, 10.0 eV, calibrated to isobutylene); the OVM readings were recorded on the boring log.The soil was then visually described by an AGE geologist in accordance with the Unified Soil Classification System(see Appendix B). 3.1.2 Grab Ground Water Sampling Grab round water samples were collected at water-table and at total depth of each robe boring, g p p p g utilizing a Geoprobe water sampling assembly fitted with a pre-cleaned one-inch diameter 0.01-inch slotted temporary well screen. The groundwater sample was extracted by lowering a Teflon hose equipped with a ball-valve through the hollow center of the push rods Into the screen section. Each ground water sample was transferred into three laboratory-supplied,40-m1 volatile organic analysis ' (VOA)vials containing 0.5 ml hydrochloric acid(18%) as sample preservative and one laboratory- supplied 1 liter amber bottle without sample preservative. After collection, the samples were properly labeled, placed in a chilled container and transported under chain-of-custody to CTEL. 3.1.3. Equipment Decontamination and Borehole Abandonment All probing rods used were cleaned prior to'advancement in each probe boring location. The ' sampling equipment was washed in an Alconox solution and rinsed with water prior to each sampling run to avoid cross-contamination. At the conclusion of soil boring activities, the borings were permanently sealed to prevent vertical migration of contaminants. Under EHD oversight, the ' borehole was backfilled with cement slurry from the total depth to surface grade.Resinate water was containerized in properly labeled Department of Transportation (DOT)-approved model ' i 17H 55-gallon drums and was stored on-site. Advanced CeoEnvironmental,Inc.