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sampler containing one clean 6 inch long by 2 inch diameter brass sleeve will be driven into the undisturbed soil to obtain the sample. One soil sample will be obtained from each end of each UST, for a total of six soil samples, see site map - Figure 3. The sample sleeve will be field screened using a photo-ionizing detector (PID) with a 10.6 ev bulb. Then the soil sample sleeve will be preserved for laboratory analysis as described below. DECON PROCEDURES The augers, samplers or any other devices that will enter the borings will be cleaned prior to being used, between sample points and at the end of the drilling/sampling activities. The sampling equipment will be washed in water containing Tri Sodium Phosphate (TSP) and then rinsed in clean water prior and after being used. All rinseate will be stored on site in the 1000 gallon ConVault for later disposal. PIPING/DISPENSER REMOVAL DOCUMENTATION SAMPLING One soil sample will be obtained from native soil beneath the removed product dispensing piping for every 20 linear feet of piping trench and one soil sample from beneath each dispenser. The samples will be collected in a 2-inch by 6-inch clean brass sleeve. Immediately after being obtained the sample will be field screened for the presence of volatile organic compounds, gasoline's range , using a PID (photo-ionizing detector) containing a 10.6 ev bulb. EXCAVATED SOIL STOCKPILE DOCUMENTATION SAMPLING As the soil is excavated from the UST area and the dispenser and piping areas it will be field screened with the above-described PID. Soil that field screens less than 10 ppmv with the PID and has no odor will be placed into the clean stockpile. Soil that field screens greater than 10 ppmv or has odor will be placed into a separate stockpile. Both stockpiles will be sampled at a frequency of two samples per 50 cubic yards. Samples will be obtained from approximately 12 inches below the surface of the stockpile in random order per 50 cubic yards to fully represent the stockpile. These samples will be preserved as described below and Chain of Custody delivered to a State of California Certified Laboratory for analysis as described in the Sample Analysis section of this workplan. SAMPLE PRESERVATION The sample sleeve containing the soil sample will be sealed with teflon sheets and plastic end caps to prevent the loss of VOC's (volatile organic compounds). The plastic end caps will be sealed to the brass sleeve with duct tape and the sleeve labeled with site ID, sample ID, date and time 2 R-603 UST WP 2/23/99