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Working To Restore Nature <br /> s laboratory for TPHd and BTEX analysis. Analytical results of the soil pile sampling are <br /> presented in Table 4. <br /> A proposal for the treatment and disposal of the excavated soil was presented to and approved <br /> f <br /> by CRWQCB, PHSIEHD, the Stanislaus County Department of Environmental Resources and <br /> San Joaquin Valley Unified Air Pollution Control District. RESNA proposes to treat the soil <br /> Flby processing it through Western Stone Products' Hughson facility asphalt batch plant followed <br /> by utilization as roadbase. The asphalt batch plant at the Hughson facility currently operates <br /> r, <br /> under Permit to Operate No. N-2303-1-0. The soil has been transported to and is currently <br /> stockpiled at the Hughson facility. Two samples of the processed material will be analyzed to <br /> evaluate the effectiveness of the burner. The samples will be analyzed for leachable <br /> concentrations of TPHd and BTEX. If leachable concentrations of TPHd and BTEX are <br /> detectable, then the soil will be reprocessed and tested, again collecting two samples, until non- <br /> Lr detectable levels are reached. The results of testing will be presented to CRWQCB prior to soil <br /> disposal. The PHSIEHD will be notified of the final disposition of the soil. <br /> ifs 3.2.2 Groundwater <br /> Due to the minimal petroleum hydrocarbon impact to groundwater, groundwater remediation was <br /> limited to extraction during soil excavation in October 1992. As water recharged to the tank pit <br /> ,F during excavation it was pumped off and stored in a Baker tank for treatment. This activity was <br /> FF� <br /> F` designed to minimize groundwater impact as a result of soil disturbance during excavation. A <br /> F- total volume of 20,600 gallons of water was pumped from the excavation pit. The influence of <br /> pumping from the pit was observed in the site monitoring wells. Water levels dropped 0.76, <br /> 0.30, and 0.34 feet in wells MWi, MW2, and MW3, respectively from October 7, 1992 to <br /> October 9, 1992. Water samples were collected from the Baker tank, and from the excavation <br /> j <br /> after the pit was allowed to recharge. The water samples collected from the Baker tank and pit <br /> were analyzed for BTEX and TPHd. TPHd and xylenes, were present at 1900 µglf and 11 <br /> rr� OW01951REPORT51CLO12594.FNL 6 <br />