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{ near the groundwater level. Sampling depths and analytical results for these samples are discussed in the section "Analytical Results". All brass liners were steam cleaned prior to use. P;1 augers, bits, and split spoon samplers were steam cleaned p-.,ior to beginning; work and between all borings. Soil samples were collected by inserting the sainplee into the augers and hammering it into the soil to the desired depth. The sampler was then removed from the augers and the brass liner containing the sample was removed from the sampler. The soil sample was examined for evidence of contamination. Since no evidence of contamination was encountered, a clean confirmation sample was collected near the groundwater level in each borehole. Tile brass tubes containing samples were covered with Teflon tape and capped with plastic caps to make airtight seals. The brass tubes were labeled with the boring number, sample interval depth, sampler's initials, date, time, location, and analysis required. The samples were logged on a chain-of-custody form and noted on the boring log. The samples were then delivered immediately to an on-site mobile laboratory along with the accompanying chain-of-custody forms. I)RlT,T,CUTTING$ Drill cuttings were stock piled on the ground and later spread out over the ground following laboratory confirmation of the absence of any contamination. MONITQRRM M,.LL CONSTR 1JC 1 ON Following the completion of each borehole, lb feet of 2-inch PVC well screen were flush threaded to well casing and inserted into the well bore. The screen was fitted with a threaded end cap. The screen slot size used was 0.010" due to the fineness of the sand in the water bearing formation. Lonestar # 3 filter pack sand was poured into the annular space around the screen as the augers were removed from the borehole. The filter pack was extended two feet above the top of the screen in each well. Prior to placement of the well seal, the wells were surged in order to promote settling of the filter pack. Following surging, additional sand was added to bring the sand level up to 2 feet above the well screen. Two feetof bentonite pellets were placed on top of the filter pack, and the remaining= annular space was grouted to the surface. SFW-1 and SFW-2 were completed using a stove pipe riser with a locking lid which was set directly into the grout. SI was completed with a traffic box set into the grout flush with the surrounding concrete slab. All well casings were fitted with locking 2.6 Y 111 011�1QN1111