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I 16 October 2009 AGE-NC Project No. 09-1714 Page 4 of 5 I Unified Soil Classification System_Boring logs are provided in Appendix A.Soil samples were also field-screened for the presence of organic vapor using an organic vapor meter(OVM)equipped with a photo-ionization detector(PID: Thermo Environmental 580, 10.0 eV,calibrated to isobutylene). The vapor concentrations were recorded on the boring log. Soil samples were collected from borings B9 and BIO at a depth of approximately 5 feet bsg, utilizing a hand auger. Soil was then hand packed .into six-inch stainless steel sleeves. After collection,the ends of each sleeve was covered with Teflon sheets,capped and sealed with tape.The r sleeves were then labeled with boring location, depth, time, date and samplers' initials and then placed in a chilled container. Following soil sample collection,all boring locations were backfilled to surface grade with Portland cement. EQUIPMENT DECONTAMINATION Prior to sample collection, Geoprobe soil sampling equipment was thoroughly rinsed with clean water after being washed with a solution of Alconox.Geoprobe rods were thoroughly cleaned prior to soil probe boring advancement. ANALYTICAL METHODS t The collected soil samples were transported under chain-of-custody to Cal Tech Environmental Laboratories(CTEL), a California Department of Public Health-certified laboratory,and analyzed for the following: • Total petroleum hydrocarbons(carbon chain analysis),with specific identification of motor oil and hydraulic fluid,where appropriate,in accordance with EPA Method 8015 Modified. • Chlorinated pesticides in accordance with EPA Method 8080. FINDINGS Organic vapors were detected by the OVM in soil samples B4-5, B5-5 and B6-5 at concentrations of 1.0 parts per million volume(ppmv),0.6 ppmv and 1.4 ppmv,respectively.Very faint to light or slight hydrocarbon odor was noted in soil samples B7-5, .B17-2.5 and B17-5. j Advanced GeoEnvironmental,Inc.