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1 <br />' 12 August 2002 <br /> S AGE-NC Project No 01-0827 <br />' Page 2 of 5 <br />' 22 SOIL LOGGING <br /> After sample preservation, soil was extruded from the remaining sleeves and field-screened for the <br />' presence of volatile organic compounds using an organic vapor meter(OVM)equipped with a photo- <br /> ionization detector(PID Thermo Environmental 580A, 10 0 eV,calibrated to isobutylene) The soil <br /> was also described in accordance with the Unified Soil Classification System Soil boring logs <br />' exhibiting soil profiles are depicted in Appendix A <br /> 23 GRAB GROUND WATER SAMPLE COLLECTION <br /> A grab ground water sample was collected from each probe boring location A Geoprobe water <br /> sampling assembly was advanced to a depth of 30 feet in boring P2, and 50 feet bsg in the remaining <br /> borings Then a four-foot 0 01-inch slotted well screen was exposed to the ground water The ground <br /> water sample was extracted by lowering a Teflon hose equipped with a ball-valve through the hollow <br /> Ncenter of the push rods into the screen section The water sample was collected in three laboratory- <br /> supplied,40-m1 volatile organic analysis (VOA)vials containing 0 5 ml hydrochloric acid(18%) as <br /> sample preservative and in one 1-liter amber bottle without a sample preservative The collected <br /> ground water samples were then labeled with the boring designation, date, time, and sampler's <br /> initials and placed in a chilled container under ice <br /> I <br /> 2 4 ANALYSIS OF SOIL AND GROUND WATER SAMPLES <br /> The selected soil samples and each water sample were subsequently transported in a chilled container <br /> under chain-of-custody to CalTech Environmental Laboratories (CTEL), a California Department <br /> of Health Services(DHS)-certified analytical laboratory in Paramount,California Selected samples <br /> were analyzed for <br /> • Total petroleum hydrocarbons quantified as diesel and selectively TPH-oil (TPH-d and <br /> TPH-o) by EPA Method 8015 Modified, <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) by EPA Method 8021 and <br /> • Total or Dissolved lead in accordance with EPA methods 6010 Modified <br /> 24 BOREHOLE ABANDONMENT <br /> At the conclusion of soil boring activities, the boring was permanently sealed to prevent vertical <br /> migration of contaminants Under EHD oversight, the borehole was backfilled with cement slurry <br /> from the total depth to surface grade <br /> Advanced GcoEnvironmental,Inc <br />