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• 25 August 1995 AGE-NC Project No 95-0143 Page 3 of 6 3 3 1 GEOPROBE SOIL SAMPLING Probings GP18, GP20 and GP 21 were advanced to 25 feet Discrete soil samples were collected at 5 foot intervals beginning at 5 feet in GP18 and GP20 and beginning at 10 feet in GP21 Samples were collected at depths of 15 feet and 18 feet in GP22 and at depths of 10 feet and 15 feet in GP24 Due to stiff soil conditions, probing GP22 was only advanced to 18 feet and probing GP24 was advanced to 15 feet All soil samples were collected using a 1 375-inch diameter, two-foot long, piston type sampler loaded with four 6-inch long precleaned brass sleeves To avoid cross contamination, the sampling equipment was washed in an Alconox solution and rinsed with water prior to each sampling run For each sample, both ends of the second sleeve were covered with alununum sheets, capped and sealed with tape The samples were placed in a chilled container and transported to McCampbell Analytical Inc (MAI) for analysis The samples were analyzed for TPH-g and BTE&X in accordance with EPA methods 8015-modified for fuels and 8020, respectively • 3 3 2 LOGGING Soil was extruded from the remaining brass sleeves and screened for the presence of organic vapors using a photo-ionization detector (PID Thermo Environmental 580A, 10 0 eV, calibrated to isobutylene) and the readings were recorded on the Boring Logs The soil was descnbed in accordance with the Unified Soil Classification System (see Boring Logs, Appendix C) 3 3 3 GEOPROBE GROUND WATER SAMPLING Probings GP19 to GP21 and GP25 to GP30 were advanced to a depth of 31 5 feet using a Geoprobe water sampler Probings GP23, GP31, GP32 and GP34 were advanced to a depth of 34 5 feet The push rods were then pulled back 2 feet to expose the water sampler screen interval Ground water was allowed to enter the sampler, and samples were retrieved using a modified PVC tubing bailer The sampler was disassembled and cleaned between each sampling New PVC tubing was used for each sample Samples were collected in 40-m1 EPA vials preserved with hydrochloric acid Due to stiff soil conditions, water samples were not retrievable from probings GP22, GP23 or GP24 The samples placed in a chilled container and transported MAI for analysis The samples were analyzed for TPH-g and BTE&X in accordance with EPA methods 5030 and 602, respectively