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I <br /> LEGEND: <br /> Sp 1 <br /> SHALLOW GROUNDWATER MONITORING WELL LOCATION <br /> A SOIL VAPOR EXTRACTION WELL LOCATION <br /> MW"111 SOIL BORING LOCATION <br /> O DEEP GROUNDWATER MONITORING WELL <br /> t <br /> GROUNDWATER EXTRACTION WELL <br /> r�Frrc�aurDrNc ' 1 f <br /> � Cl AREA OF OVER-EXCAVATION DURING 1999 <br /> 1,125 EL DORADO S��-1- <br /> �0 I UPGRADE ACTIVITIES <br /> 0 0POWER POLE <br /> 33 <br /> s � D0— --a+ OVERHEAD POWER LINES <br /> s <br /> p <br /> MW 10 A[.I.. Y �--- TA — 11000 MtBE ISOCONCENTRATION CONTOUR <br /> (1.0) MtBE CONCENTRATION BY EPA METHOD 8260 <br /> {:o�ti1��Tosco [moo) <br /> c2 , 9 5EPVI D.RADO$r �p METHYL TERTIARY BUTYL ETHER <br /> 2 E mw-8 <br /> f FgFoh (N51 NOT SURVEYED <br /> s <br /> O ,s,A+'t::4 1 <br /> 10 0 �. <br /> Mw-Zvi°,K NOTE TOSCO WELLS SAMPLED ON NOVEMBER 14,2002. <br /> SELL mw U ARCO WELLS SAMPLED ON NOVEMBER 20,2002. <br /> MW-7 <br /> MWS <br /> Y <br /> t <br /> (2.7)+ <br /> 1K p,Y <br /> KIW 2 EW-2 <br /> Q <br /> r5.,u�� DMW � <br /> MW-7 <br /> 93) <br /> ARpING WAY <br /> EW-1 <br /> (sw) ,�o• I <br /> 0� Df1I ,�• <br /> Mws <br /> a Mw-3 2• '� ��� <br /> [[ump MW-4 <br /> Y V <br /> p SVE-1 r doom <br /> Lu MW-1 <br /> 41 !r r�1 <br /> AG <br /> PAVING <br /> PUMP <br /> ISLAND <br /> o Y PAYING <br /> _ rn <br /> (SOWING <br /> o <br /> Cjmw <br /> -9 0 60 120 <br /> feaw PA R <br /> FORMERAND S&1 APPROXIMATE SCALE FEET <br /> w ` ,X"STlNG usr'il Vrs MW <br /> 2 1 <br /> i; i i � ry,aionl <br /> DRAWN PR FIGURE 4 <br /> SEC�R APS ARCO SERVICE STATION#4932 <br /> S A REFERENCE: TOSCO SITE IS BASED ON ON A'SITE CH 16 EAST HARDING WAY <br /> PLAN'PROVIDED BY IT OORPORATION, STOCKTON,CALIFORMA <br /> AND IS INTENDED FOR ILLUSTRATION International DATE04gPR2002 MtBE ISOCONCENTRATION CONTOUR MAP <br /> MORRARCORVE SITE SURVSUREYING. <br /> Ea BY roe No SHALLOW WATER BEARING ZONE <br /> MORROW suRVEnn1G. Incorporated � <br /> 77BP.54932.02.0136 NOVEMBER 14 &20, 2002 <br />