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09 August 1999 u AGE-NC Project No. 98-0466 Page 7of10 sampled soil. Upon irecovery of the sampler, the secorid leading brass sleeve was-preserved,by r covering both open ends with Teflon sheets, capping vrith plastic end-caps and sealing with duct`_ tape. The sealed samples were labeled with the boring designation, sampling depth, date, time and sampler's initials. The preserved samples were then Cored in an ice-chilled container pending shipment under chain-of-custody to McCampbell Analytical, Inc. (MAI), a California Department of Health Services (DHS)-certified analytical laborator7: .� Soil visually were v sample duplicates described in accoidance with the Unified Soil Classification P p y System(USCS,.as per Visual Classification of Soils, 1986, Bureau.of Reclamation Engineering and Research Center) and were screened for the presence of organic.vapor utilizing an organic vapor _meter(OVM) equipped with_a photo-ionization dete'eto '(PID: Thermo Environmental 580A, 10.0 eV, calibrated to 100 ppm isobutylene). Boring logs are included as Appendix A. Selected soil samples were analyzed for: , r =• . Total petroleum hydrocarbons quantified as die el (TPH-d) by EPA Method 8015.-M, • Benzene, toluene, ethylbenzene and total xylen.s (BTEX)by EPA Method 8020; and Methyl.tert butyl ether.(MTBE)by EPA Metho 8260.' r-. At the direction of the PHS-EHD,a soil sample was c llected from a soil stockpile of uncertain origin located near the former UST No:. 1 facility on 2 June 1999: The sample was collected by 'digging approximately 1:5-feet into'the stockpile and.dri ing a 2-inch by-6-inch brass sleeve into the R exposed soil utilizing a metric sampler and drive hamme The,soil-filled brass sleeve was preserved' and labeled as:described above; entered onto achain-a custody form, and stored in an ice-chilled container pending shipment to MAI:under chain-of-cust dy. The PHS-EHD directed that the sample be analyzed only for BTEX: 3.2. GROUND WATER SAMPLING AND ANAL SIS Grab ground water samples were collected though a Geo robe ground water sampling device. Water samples..were collected from P2, P3 and P4 at 50 feet b 3g..After collecting the Enol soil sample at 50 feet bsg, the water sampling device was driven a foot or so into the soil-at total depth, the assembly was then raised to'expose 3 feet of a 1-inch iameter, 0.002-inch slotted.screened.PVC . casing: Ground water was then collected utilizing polyethylene tubing with a check valve to pump water.to the surface. The ground water samples retric ved from.probe'borings P2 and P3.were . collected into 40-m1 EPA-approved VOA vials containin 0.5 mi 18%hydrochloric acid.as a sample preservative. Sufficient.water sample for analysis for , iesel fuel was inadvertently'not collected- during the initial sampling.event; with PHS-EHD concurrence, soil probe boring•P4 was advanced adjacent to soil.probe boring P3 in the kirmer excavation-area to collect a water sample specifically, . Aihanced GeoEnvieonmental,Inc.