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Readwell&Rollo Mr. Jeff Wong 12 December 2000 Page 2 SCOPE OF WORK The proposed soil and groundwater investigation is designed to assess whether hazardous materials are present in site soil or groundwater resulting from current and past activities at the site and adjacent properties. Figure 2 illustrates 11 potential soil boring locations for the site. The sampling locations have been selected to target historic operations that may have used hazardous materials, and to provide alternative drilling sites. Sampling and Analyses Treadwell& Rollo proposes to advance up to 8 soil borings with a direct push rig. Up to six borings will be 8-feet deep and two will be 20 to 25 feet deep. Soil samples will be collected continuously for logging purposes, and selected samples (approximately 4 per boring)will be submitted to an analytical laboratory for chemical analyses. Grab groundwater samples will be collected from the two deepest borings to help evaluate potential groundwater contamination. Soil samples will be retained in stainless steel or acetate sleeves, covered with Teflon tape and plastic end caps. Groundwater samples will be collected in a pre-cleaned stainless, Teflon, or disposable polyethylene bailer, and decanted into the appropriate laboratory supplied containers. All samples will be retained in a cooler on ice and sent to a state-certified laboratory using chain- of-custody procedures. The borings will be backfilled with a neat cement bentonite slurry after the samples have been collected. All drilling and sampling equipment will be steam-cleaned prior to each use. The soil cuttings and decontamination rinsate will be contained in drums on site and disposed of once the analytical results are known. The exact number of samples to be analyzed for each particular analysis will depend on conditions encountered during drilling. Following is a proposed analytical program for the site. • Soil samples collected from each boring will be analyzed for total lead, and selected samples will also be analyzed for total arsenic, cadmium, chromium,nickel and zinc. Depending upon the initial results, soluble analyses for metals may be recommended. • Selected samples will be analyzed for total petroleum hydrocarbons (TPH) as gasoline, diesel,mineral spirits, and motor oil by EPA Method 8015M, and benzene,toluene, ethyl benzene, and xylenes(BTEX)by EPA Method 8020. • Selected samples will be analyzed for volatile organic compounds by EPA Method 8010.