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ASSOCIATES I N C . Using an excavator, soil was removed from the pit to a depth of approximate) 17 feet b ss Excavated soil was visually inspected and monitored with a Photoionization Detection (PID) meter by a geologist from ATC for the presence of petroleum hydrocarbons. Field observations indicated that soil contamination attenuated rapidly with depth. Two confirmation soil samples were collected from the excavation bottom. Samples were collected in brass tubes. Sample tubes were sealed at each end using Teflon tape and plastic end caps, labeled, and placed on ice. Due to the instability of the sidewalls, no sidewall samples were collected. A total of approximately 200 cubic yards of excavated soil was stockpiled on site at the location shown on Figure 2 pending ' characterization, Stockpiled soil was placed on and covered with visquene plastic. ' As groundwater seeped back into the excavation, a sheen was observed on the water surface. Evergreen Environmental extracted an additional 7,204 gallons of groundwater from the excavation. The groundwater was manifested and transported off site as nonhazardous materials ' for disposal at an appropriate recycling facility. A grab groundwater sample was collected from the open pit as it began to recharge. A second grab groundwater sample was collected from the pit on April 3, 1998 after the pit was fully recharged with groundwater. The samples were immediately placed in a cooler with ice. ' On April 9, 1998, ATC supervised Evergreen Environmental as they extracted 1,814 gallons of groundwater from the excavation using a vacuum truck. The groundwater was manifested and transported offsite as nonhazardous materials for disposal at an appropriate recycling facility. Copies of field notes are contained in Appendix B and copies of the manifests are contained in ' Appendix D. The samples were submitted with chain-of-custody record to Sequoia Analytical (ELAP #1210) ' for analysis of TPHd and total petroleum hydrocarbons as gasoline (TPHg) using EPA Method 8015 modified, for benzene, toluene, ethyl benzene, and xylenes (BTEX) using EPA Method 8020, and for oxygenate fuel additives using EPA Method 8260. 3_2 DrillinLy Activities On April 3, 1998, a geologist from ATC Associates supervised the advancement of four soil borings to 10 feet bgs. A site plan showing soil boring locations is included as Figure 2. Fisch Environmental (C57 #683865) advanced the borings using a truck mounted Geoprobe® narrow diameter rig employing direct push technology. Soil samples were collected at five-foot intervals + in acetate sampling tubes beginning at five feet below the ground surface and were described w:1822541sumrptdoc 3