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Only vay low levels of either metallic or organicwnM-Awnts 6ye been det=ed in some of <br />the wells downgradientof WMU A. Because these levels are vay low, there <br />is not sufficimt <br />reason to containctize the purge water. Should the analydcal mWts indimte a need to <br />cont:eu� the following procedure y�ill be used: <br />Sample -purge water gcn=W during well.purgin& aid excess water gmeiated during <br />I%MPU- - ng, will be pkced in a hafler mounted tank Wtached to - the sampling vehicle. <br />When the tank is full.,the <br />grouridwater will be pumped from the tank to an onsh'e leachate <br />evaporation pon(L After the groundwater sampling round is completed the tank will be <br />fffled with aMrmdmately 100 gallons of water from the water truck fill station_ <br />will then be recirculated in the tank and pump to zinse the sYstem- The . nnse water <br />will then be discharged to the pon(L <br />The. domestic well sampled (DW -9,690) contains -a.submcmibIc pump vyittL-an in-line <br />: :7 <br />tank wo switch -to activate the pump once- th�_-Fts�qrqps beJawn <br />-a certai•val, -f he <br />_Sampl <br />point for DW-9690spig<A dfi-&--dy attached �o the press= <br />tank- WatCr'Samples were <br />collea,ed directly from the -well b=ausc the aboveground plumbing and subinum-ble <br />no <br />wx)uld need- to bc removed. Frier to collecting the wat= S=q3ICS, thC pump Was. allowed to fI <br />f -Or Opproximat* 30 mkmes t<r purge the water systen:r and rw groundwater fmm-dje aquifer. <br />During sa=pling, the pumps cycled on-off because the pumping rate exceeded the spigot <br />discharge,, <br />23493949-FOIWIOR325 A-11 July 14,200 <br />