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ANTICIPATED NEXT QUARTER ACTIVITIES <br /> a Submit Quarterly Summary Report <br /> • Conduct quarterly monitoring event <br /> • Submit Additional Assessment Report for installation of three additional deep groundwater <br /> monitoring wells <br /> CHARACTERIZATION/REMEDIAL STATUS <br /> Impacted soil delineated? Yes-lateral, Yes-vertical <br /> Impacted groundwater delmeated9 Unknown <br /> Current phase of project? Assessment and <br /> Monitories <br /> Frequency of samplings _ Quarterly <br /> Current Remediation Techniques? N/A <br /> Soil remediation in progress9 No <br /> Anticipated start? N/A <br /> Anticipated completion? N/A <br /> Groundwater gradient? East at 0 002 to 0 003 ft/ft <br /> Dissolved/free product remediation in progress? No <br /> Anticipated start? N/A <br /> Anticipated completion? N/A <br /> CONCLUSIONS: <br /> Soil impacts extend vertically from the base of the dispenser area over-excavation to <br /> approximately 70 feet bgs, petroleum hydrocarbon concentrations attenuate at 80 feet bgs <br /> Shallow groundwater impacts at the water table are limited to methyl tert-butyl ether(MTBE) at <br /> concentrations of 18 and 8 5 parts per billion (ppb) in MW-3 and MW-4, respectively <br /> Deep groundwater(80 feet bgs) is impacted by TPH as gasoline (TPHG) and benzene, toluene, <br /> ethylbenzene, and xylenes (BTEX) TPHG was reported in MW-5 and MW-6 at 4,000 ppb and <br /> 740 ppb, respectively Benzene was reported in MW-5, MW-6 and MW-7 at 27 ppb, 26 ppb, and <br /> 0 64 ppb, respectively MTBE was not reported in the deep groundwater wells The extent of <br /> the deep impacts is not defined The source of the deep groundwater impacts appears to be the <br /> soil impacts extending to approximately 70 feet bgs <br /> The owner of adjoining property to the east and north of the subject site is exploring a purchase <br /> of the subject site with probable use as parking <br /> 4409/822121 1 b doc 3 10/18/01 <br />