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' � <br /> �...DOM <br /> r.�r`�.. <br /> Ms. Mary Meays � c <br /> September 29, 1995 (9347-3011) I <br /> Confirmation Soil Borings Workplan <br /> Fugro proposes to advance five confirmation soil borings using the GeoProbe® system <br /> in the areas of investigation shown on Figure 8. The GeoProbe® employs a mobile <br /> hydraulically-driven soil sample collection system'which advances 1-114-inch-diameter push rods <br /> to a desired depth. An undisturbed soil sample is then collected using a 1-1/16-inch-diameter <br /> split spoon. This process generates minor soil cuttings which will be temporarily stored onsite <br /> on and under plastic sheeting pending waste characterization. The following is a detailed scope <br /> of work: <br /> E <br /> 1) Advance one boring south of MW-1 and CB9. <br /> 2) Advance one boring south of the concrete,,!pad near the location of CB8. <br /> 3) Advance one boring northwest of MW-2. <br /> 4) Advance one boring west-southwest of RW-2. <br /> k' <br /> 5) Advance one boring southwest of RW-1. <br /> 6) Collect soil samples at a minimum`of five-foot intervals, at changes in lithology, at <br /> indications of petroleum hydrocarbons in the soil, or if water-bearing soils are <br /> encountered. Soil samples will be field screened with a photo-ionization detector. <br /> 7) Submit a maximum of two soil samples collected from each boring to a state-certified <br /> analytical laboratory and analyze for. TPH=G by modified EPA Method 8015 [practical <br /> quantitation limit (PQL) = 1.0 ppm] and benzene, toluene, ethyl-benzene, and total <br /> xylenes by EPA Method 8020 (PQL = 0.005 ppm). <br /> 8) Submit a technical report summarizing the` investigation findings and results. <br /> i <br /> The borings will be terminated at approxim tely 29 feet below grade or when the capillary <br /> fringe is encountered. The fieldwork will be performed after agency approval and appropriate <br /> permits have been obtained. A results report will!"be submitted within 60 days of receipt of the <br /> laboratory analytical results. <br /> { <br /> i{ <br /> u-. 93473611.ARP -7 <br />