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ork AMhis s also been routinely modltonng = <br />facility since 1990 <br />- <br />ndtions;groundwater levels in five of'the = <br />J <br />vIW 3, MW=4, MW =S, and MW n have dropped toa <br />e of their Screened: interval Currently;. <br />emainmg three wells have been measured ata depth = <br />ir <br />- - <br />1,boreholes-and instill five _groundwatei monitoring.= <br />I <br />- <br />ince - <br />13) at the aocations:shown on=Figure I. Since-- <br />kis reported to be.towazd --the-, monitoring <br />be <br />- - <br />1-in a hydraulically_-upgradient=position =relativib 46 <br />MK 10 and MW 11-will be _located in cross gradient <br />= - <br />2_and MW43 wilYbe situated downgradient -None <br />11-be abandoned 4n Icaie4tilturi`groundwater levels = - <br />them relevant monitonng points <br />a depth 605 feet with hollow stem auger drilling <br />vill be. collected .from- the boreholes at'S-foot _ <br />- <br />geologist,sc_'reened for hydrocarbons with a <br />,sled, and scored on:ice for`"subsequent-testing <br />steam &leaped pnor'io each boreholeSampling <br />prior to each sampling event Dnll .cuttings„will be - <br />y plash& h-gat at the site pending_proper <br />onstructed in each boiehole tMonitoring wells <br />- -= <br />12'will be constructed with 4=incfi diameter, . <br />D"PVC 'screen and=casmg _Wells MW=O and. <br />i with 2 inch diameter, flush=threaded; Schedule- <br />Well screens will consist of_0 010-inch, <br />- <br />r� <br />isof-15--ib <br />is=extendmg"fro'a:depth of35 to 75-feet'to allow _ y <br />l <br />tuahon. Number;2/°12 <br />sand-will be placed as, an <br />he=bottom=of the:well <br />to"at least 2 to3 feet -above <br />irozimately 2 to 3-feet of bentonite pellets wilLte <br />t;and hydrated to- provide a seal A <br />I<be placed over theseal to-adepth of about- 1.5;'feet -_ <br />-_ <br />-The well will be'finished it-the, ground surface' <br />traffic rated' cover. = - <br />