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R Lionudakis Firewood, Inc. Page 4 of 6 collected in acetate tubes for lithologic identification, subjective analysis with a PID, and selected laboratory analysis. Up to four selected soil samples will be submitted for laboratory analysis to confirm the diesel contamination and to profile the soil for disposal. The acetate tubes will be cut to length, sealed with Teflon® tape, capped, uniquely labeled, and stored in an ice chest refrigerated to a temperature of approximately 4°C for shipment under chain of custody protocol to a California Certified Laboratory. Soil samples will be collected at 4 -foot intervals beginning at 8 feet bgs, measured using a PID, and classified in accordance with both the North American Commission on Stratigraphic Nomenclature, and ASTM Designation D2488-90, which is equivalent to the Unified Soil Classification System. Soil samples will be submitted to a State -certified laboratory and analyzed for DRO, KRO, MORO, and benzene, toluene, ethylbenzene, and total xylenes (BTEX) using EPA Method 8015M. One soil sample will be analyzed for CAM -17 metals for soil profile purposes. All non -disposable drilling and sampling equipment will be washed thoroughly with laboratory - grade detergent and water between uses to minimize the potential for cross contamination. All decontamination water will be stored in poly drums until disposal can be arranged. 2.4 Soil Profile The analytical data collected during the Geoprobe® investigation will be sent to Allied Waste (Forward) Landfill for disposal profiling. Once the soil is profiled by the landfill, Ground Zero will prepare a hauling plan and arrangements will be made with Forward to accommodate the estimated volume of soil. 2.5 Excavation of Contaminated Soil The San Joaquin Valley Air Pollution Control District will be notified prior to excavation and Rule 4651 — Soil Decontamination Operations will be followed. After the lateral and vertical extent of soil contamination is delineated via Geoprobe® investigation the upper ten to twelve feet of clean backfill will be removed and stockpiled on the yard. A State -licensed hazardous materials contractor will excavate the contaminated soil and load the soil into waiting trucks. If necessary dust will be controlled by wetting the soil surface of stockpiled soil. Once filled, the trucks will haul the soil to Forward for disposal. Manifests provided by Forward will be kept and submitted in the final report. Confirmation soil samples will be taken at the bottom of the excavation along each sidewall. The soil samples will be submitted to a State -certified laboratory and analyzed for DRO, KRO, MORO, and benzene, toluene, ethylbenzene, and total xylenes (BTEX) using EPA Method 8015M. The excavation will be backfilled using clean sand and gravel from a local supplier and the stockpiled overburden removed prior to contamination excavation. An experienced geologist under the supervision of a professional geologist will be on-site documenting excavation, sampling and backfilling activities. Field notes will be included in the final report. G:IGROUNDZEWONUDAKISIWorkPlanlWP Site Assessment and Remediation.doc