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(<50) <br /> B-8/MW-7 <br /> t <br /> rd <br /> B-5/MW-5 *1700 1 <br /> - ( ) r <br /> •�.� 0 1 <br /> Former <br /> Tank � <br /> + , <br /> � Cavity G <br /> EXPLANATION, <br /> 4t B-8/MW-7 <br /> Soil Boring / Monitoring Well <br /> v1 Q o -11 (Applied GeoSyste ms, June 1988) <br /> `II b 160) v� <br /> PVE <br /> VW t VW-0 -2/MW �'�-4/MW-4 i 111 N B-11/VW-3 Soil Boring / Vapor Well <br /> B-3/MW-3 B- 9' � (Applied GeoSyst4ms, August 1989) <br /> 1 ` <br /> Former Former 'o$ <br /> o� Statigno ��T Diser nser o, (110,000) Concentration df TPHg In <br /> -�1 Build3ngr / <br /> � mer Islands �o Ground Water Measured In <br /> %.% <br /> ForQoo Parts Per Billion <br /> 110,000 %Waste-0�1 <br /> B-7/MW-6 %Cavity <br /> Line of Equal Concentration of <br /> TPHg In Ground{ Water Measured <br /> .oQo r4pO <br /> 00 In Parts Per Billion <br /> I <br /> 49 <br /> Water Samples Collected May 21, 1992 <br /> 1 <br /> 40 01 40 80 <br /> Source Modified from Unocal site <br /> plan, Monitoring wells surveyed i <br /> by Moldenhauer Engineering Company Approximate Scale (feet) <br /> I <br /> TPHg CONCENTRATION MAP PLATE <br /> MMM wA <br /> Former Unocal Service Station No. 2859 I 4 <br /> 9885 Pacific Avenue , <br /> PROJECT NO. 38012 80 2i2A Stockton, California <br /> • <br />