Laserfiche WebLink
29 December 2000 <br /> AGFi -NC Project No. 95-0114 <br /> Page 8 of 8 <br /> 4.4, WE1.1, DF'VEL0PMkN'1_. <br /> Dcvelopnrom of tile proposed wells will consist oFa combination of'hailing) v.\-ill, it stainless steel <br /> hailer to remove the major portion of line-grained sediment From inside the well. to flush <br /> out or draw in sediment hom the Filter peck and ad&timml ground water evacuation (purging) "Ali <br /> a suhmersiblc pump to finish the ren oin! of fine-grained sediment. Developmental hur,-ing aCtiVities <br /> �tiill be comMued until field parameler(pi L electrical conductivij�� and te111peraturel ha%o <br /> stahilized and purged water is visually selmonsbec. <br /> 4.5. GRO tIND WATER F TRAC"1JC)N TFST <br /> A grotntd i%ater dratldwii pilot test &H he performed to CValuate feasihility ol' 111.OUnd eater <br /> extraction to remove Wrocarbon mass. A do"nhole water pump will he utilized to induce a decline <br /> in static water level in the extraction v-poll: pressure transdUC t:5 �,Nill he deplo�'Cd ill surmundin1 dells <br /> to measure Chf FCrenCt in ground water levels before W pumping; and at so time intorAak during <br /> "Al pumping. <br /> (around Nater %gill he extracted from the extraction well (F�W-1 )_ around eater level observations <br /> will he collected from knells MW-l. MW-2 and the newly installed `around \kater monitoring wells. <br /> hhe Lround vmater"HI be extracted utiliAng a subInnWhle. 4-inch diameter GrundIs Rcditlow sell'- <br /> priming, <br /> ell-priming downhole pump. 'I ground walcr pumping rate �,vill be regular over the test period to <br /> athiCvC the optimum pumping rate for the greatest drawdown influcncc. During the pumping, the <br /> estimated «round water extraction floe- rate will be iive gallons pet- minute. lF the decline of the <br /> pound eater level is not satisktctory witlhin the first eight horn's orthe pilot test. an additional eight <br /> hours of.0round water extrLrction will be performed to achieve sulticicnt <around water dra�tido�tin. <br /> Pugcd gmund water W be containerized in a 9,000-gallon Baker tank: fern' COu1posite "grah" <br /> around water samples will be collected from the inlet to the Baker tank for analysis for "l Pl 1-5s_ <br /> BTEX and VOCs in accordance %pith methods listed in Section 3.4. The purged ground water will <br /> he twSpol'ted to a suitably hazardOUs waSte AClhty. <br /> The dt.lmbon oF tic initial drawdo"w pilot test "A! be a minimum of eight horns. The purposed <br /> drnv%dovtrt pilot test will he designed to obtain gowl-A arl0hr chmnoeHAWs such as hQr Aic <br /> conductivAj. transmissiNrit\.. kNell ef'lectiveness (ifticiency) and drawdown at a constant pumping <br /> rate. <br /> -1dvurrcedCUI n%ironaly la I.Inc. <br />