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x <br /> The hydrauli: conductivities enlculated in each well are: <br /> L1 "IFALLIEG HEAQ <br /> MW-3 3.3E-5 FT/S (lE-3 CM/S) 3.9E-5 FT/fe (1.2L-3 CH/S) r <br /> MW-4 2.1E-5 FT/S (6.3Er4 CH/3) 6E-6 IT/S (1.8E-5 CM/S) <br /> MW-5 1.2E-5 F•T/S (3.6E-4 CM/5) 1E-5 FT/S (3E-4 CM/S) <br /> _1W-G 6.2E-5 FT/S (1.9E-3 CM/S) 4.6E-5 FT/S (1.49-3 CM/S; <br /> The values for rising head versus falling head data for each well are quite <br /> close, The one-half order of magnitude C:_}berence in the rising and falling head <br /> -- condnctiv{ties is within a reasonable approximation. The hydraulic <br /> conductivicies for wells MW-3 and MW-G indicate the aqu2rer material in those <br /> 17e'ls to be silty sand or fiu.a-grained sand (Freeze and Cherry, 1979). The <br /> values for MW-4 and MW-5 are Indicative of hilts and silty sands. <br /> �~ 5.2 PRODUCT BAILDOWN TEST IN WELL MW-1 <br /> A baildawn test was conducted in well MW-1 to estimate the rate at which <br /> free product will flow in::o the well. The floating hydrocarbon present in the <br /> -• well was bailed every 30 seconds for half an hour using a 26 inch long, 1.5 inch <br /> ` diameter disposable bailer. "The height of the hydrocarbon in the bailer was <br /> measured after each bail. Initially, the hailer came up full of product but in <br /> subsequent bails the thiclmess decreased, stabilizing at about one inch, after <br /> 20 minutes (Appendix C), Between 20 and 30 minutes, the well could be bailed <br /> st this stabilized rate, which is equivalent to 0.003 GPM, Using the hydraulic <br /> ,t t_ conducLtvities determined from the slug tests (Section 5.1) and the Theis <br /> equation for, drawdown in a well (Freeze and Cherry, 1579), it is estimated that <br /> product could be p'xoduced from this well most efficiently by cycling the pump. <br /> The theoretical optimum pump cycle is to pump at 1 GPM for 30 seconds and then <br /> sheat down the pump for five minutes. However, as product. in removed from the <br /> well, it will dispiace less Nater. This will-esult in a slight rise in the <br /> ,water surface irmad ately around the well which will make it more difficult tG <br /> dray.the. hydrocarbon toward the well bore. Ther fore, it is rino recommended <br /> the-t• stater be pumped from the base of the wall at a sustained rct:e ,tf no greater <br /> MSACG3.0U1 7 November 1989 <br />