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el-H.u.l Greud'vat rr Manl for lig Rpforr -, 1Hn NlpfiurY 4E'f or a Cel t torn 1p troJ«r vo.to-w-ru 8ummary of Previous.Work Previous work performed by Applied Goosystems (AGB( at this Gita include the installation of four ground-wetsn monitoring wells in - June, 1987, issuance or a report evaluating the tent of petroleum hydrocarbons in soil and ground Water at the 'it to in July, 1987; and preparation of ground-water monitoring reports Sn .ctoter, 1987, April, 1908; July, 1968; and August, 1989, MGA prepared a pravious bi-annual ground-water monitoring report Por thio nit- In nctaber, 1990, { W89trLTO Watsr Te le 8lavatio� Water table elevations were measured by a representative of WGA f.r thio report in April, 1991. The depth to the ground-water surface was measured from.the north aide of the casing of each well With an electric tape. Water table elevations are reported in Table 1.. Water table -levatioga range from a low of 15.81 feet above mean Sea level (mol) at monitoring well MW-z to a high of 27.54 feet mol at monitoring w 11 i4W-4. A Water table ca Mtemr map (Figure 2), j�depieting the elevation er the ground-water eurraee at the site, has been prepared in order to determine the direction or ground- water flow, Examination of Figure'2 shows the direction of ground- Waterflow at the 81(e to be in a southwesterly direction. The hydrau1 Se gradient of the water table at al the Bite ie calculated to be about ..007 foot/foot, ! II X81 Ground-water Elevations r Hell Data Depth to Hater a0osing Elevation Water Table mlevatlan !feet be},owmorfa cel finean sea ]oval! (mean 601 level! KW-1 4/16191 72.20 99,62 17.42 3 MW-2 4/16/91 71.45 99.26 25.81 'MH-34/16/91 -1 190.00 27.39 - MW-4 4/16/91 71.30 98.04 27.54 021 elevation are referenced relative to an arbitrary elevation of 100.00 feet mea sea level(mol) ..signed to...it-ring all IN-3. ®)t al�Ikdlrfal�IWlnnsw. �..