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M The Transmission Former Arco Gas <br /> oNn <br /> ImZw <br /> O <br /> Station <br /> M <br /> Shop (Currently o Car <50 <br /> Wash Facility) <0.50 <br /> <0.50 <br /> 00 <0.50 <br /> <0.50 <br /> ZM .,ter Way <br /> West Active <br /> Service Station <br /> Active <br /> m Service Station <br /> MW-2R <br /> DRAPERY <br /> SHOP <br /> II <br /> .I w <br /> p VW-4 <br /> 0Of. I E<50 ItogSITE VICINITY Me,000s z <br /> Not To Scale 5,500 -- <br /> 1,200 i Ag O <br /> U <br /> m 410 _ z <br /> o I 1.420 W9_ J <br /> co <br /> w I / A MAWS 9I I ` MW-4RD <br /> 950 <br /> = VW-3S/D W-_4RD 150 <br /> v TRANSMISSION SHOP 2,300 IVW-3S/D SP-1 14 <br /> 190 <br /> 43 I VW-2S/D 53 <br /> 39 I - --+ 1--- VW-2S/D <br /> qMW-12D IMW-11D' 97,000 <br /> I M 50 R L eMW-101 1 51900 <br /> MW-3R I I MW-7S 1,900 <br /> <0.50 1 VW-1S D A' MW-81' 1,000 <br /> 3 <50 14,000 <br /> o ." <0.50 <0.50 HL4 <br /> 40 I 5,530 <br /> <0.50 I 0'9 ` 0<0.50 2.3 1R 95VW-1S D <br /> <0.50 96 / <br /> L> MW-3R ANTICIPATED TREATMENT BOUNDARY \ /, <br /> O U / <br /> li <br /> w I <br /> X ' LEGEND WEST CHARTER WAY <br /> 0 PROPOSED SHALLOW WELL SCREENED 35-45 FT. BGS @ BIOSPARGE WELL/POINT (SP-1) <br /> 0 PROPOSED INTERMEDIATE WELL SCREENED 55-65 FT. BGS <br /> 0 PROPOSED DEEP WELL SCREENED 75-85 FT. BGS <br /> 2,300 TOTAL PETROLEUM HYDROCARBONS AS GASOLINE (1,900 µg/L) <br /> MW-1R 0 MONITORING WELL, TOTAL DEPTH 50 ft. OR LESS 190' BENZENE (310 /L) <br /> 43 ETHYL BENZENE (78 µg/L) <br /> VW-1S/D' - CO-LOCATED VAPOR EXTRACTION WELL 12 TOLUENE (12 ug/L) G7 <br /> (WHERE SHOWN) 39 TOTAL XYLENES (26 µg/L) Siii ` slix r :'--Onirril i'tc. <br /> MW-41RD MONITORING WELL, TOTAL DEPTH 80 ft. DON RODGERS <br /> AA' NOTES: TRANSMISSION SHOP <br /> 515 WEST CHARTER WAY <br /> 1 I REFER TO FIGURE 5 FOR SCHEMATIC CROSS SECTION DETAILS 1. ANALYTICAL CONCENTRATION SHOWN ARE BASED ON THE FIRST QUARTER STOCKTON, CALIFORNIA <br /> L—� 2008 GROUNDWATER SAMPLING RESULTS. APPROXIMATE <br /> — — — PROPERTY BOUNDARY 2. AT THE CO-LOCATED VAPOR EXTRACTION WELLS, GROUNDWATER <br /> S C A L E FIGURE 4 <br /> �\ INFERRED LOCAL DIRECTION OF GROUNDWATER GRADIENT SAMPLES WERE TAKEN FROM THE DEEP WELLS ONLY BIOSPARGE PILOT TEST AREA <br /> (DENOTED BY "D-) AS SHOWN. 0 20 40 r[E1 <br />