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} <br />' MW 14AW Mw 14 i <br /> FOR IJ f <br /> I <br /> MW 150' O OFFICc MW 1 BUILOIr1G <br /> FORMER MW 1 MW 25S MW 13 <br /> iSPENSER FORMER <br />' ISLANDS MW 25D UNOCAL <br /> Union BUILDING i <br /> Ba —FORMER WASTE <br /> OIL TANK <br /> AS- ' <br /> MW 11 <br /> MW 12 MW 18D I <br /> utvkn <br /> MW 23SM L MW 19S <br /> MW 160 ROBINHGOD DRIVE / ` <br /> 1 <br /> MW 17 <br /> cP�O MW 1 M <br /> � ntw-n <br /> I 1 <br /> MW 215 <br /> MW t$ MW 34 <br /> o FORM R R AL1 A PPROXIMATE LOCATION OF FORMER BULK OIL , <br />' DISPEN E 2 Fanner Mortyar'n Ward MW 32 USTs REMOVED ON JUNE 22 1W <br /> ISLAND Auto Service Cen <br /> Firestone AND PIP I G / f MW 26 <br /> Tire <br /> 0�� v <br />' LEGEND MW 22S �NIW APPROXIMATE LOCATION OF FORMER BULK OIL y <br /> 1 USTs REMOVED ON AUGUST 28 1986 <br /> ® MW 1 GROUNDWATER MONITORING WELL LOCATION <br /> MW 451D ' MW BR Q) y� <br /> 0 DESTROYED WELL 0 MW 1 MW-8 0 MW B <br /> DESTROYED J <br /> SEQUENCE-REDOX DIAGRAM EXPLANATION IRRIGATIONWELL FORMER FUEL J , <br /> Uj <br /> TANK BASIN i <br /> LU <br /> NITRATE MANGANESE(Mn(11)) Q <br /> 1D 001 (} <br /> 0 MW 5 <br /> (� <br /> 7 <br />' y � < Yoodtrtg darJc <br /> s s <br /> 1 Ttttah <br />' 25 MW 29 <br /> OXYGEN 02 i <br /> •r i�ON(Fe(ll)) <br /> larttsr <br /> MW 7 ate <br /> 1111111 <br /> 1 75 1 1111 5 1 01 <br />' 10 I <br /> 1 D r aEB sw <br /> i <br /> 001 0 } <br /> D 001 <br /> MW 7 <br /> I <br /> METRA E((CHH ) aD 50 SULFATE(SO4) 0 N 100 <br /> Approximate Scale <br /> Average background concentrations taken from wells In Feet <br /> ii MW-14, MW-27, MW-31,and MW-32 <br /> € <br /> Monitoring event concentrations December 17,2004 RADIAL REDOX DIAGRAM MAP FIGURE <br /> Sequential influence during biodegradation 0 Mw3o <br /> ® I <br /> T Increasing concentrations <br /> Former UNOCAL Station 5098 Quarterly Monitoring Report 14 <br /> MV4L7 Monitoring well designation 10411 Old Placerville Road Ste 219 56W Pacific Avenue <br />' 4th Quarter 2004 <br /> Sacramento California 85Stockton,California ; <br /> 627 <br /> 001 Concentation In micrograms per liter(ug/L) Phone (916)362 7100 <br /> Fax (816)382 6100 R BY I PROJ N <br /> Web WWW ENSR COM D PARTIDA 01/11/05 06840-283 <br />' 20050126 14475396 J\Projects\06940\5098-293\CAD\4004\REDOX\509$_SITEMAP_REDOX 2 4004 dwg <br /> l <br />