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29 <br /> 233 <br /> 28 <br /> 30 <br /> 27 25.6 77.3 <br /> 5 <br /> 31 EXPLANATION <br /> 26 11.3 100 µg/m3 TCE soil vapor <br /> iso-concentration contour <br /> 24 032 <br /> 22500 µg/m3 PCE soil vapor <br /> 344.5 iso-concentration contour <br /> 106.17 4.67 16.7 <br /> Cityof Lodi Industrial Waste <br /> 2016 19 181 7 33 Line33,5 0.31 '$.5 3 11.2 39S9 257 City of Lodi Sewer Discharge <br /> 21 B56 Line <br /> <1.32 12 ( 13 15 871 7 4 LSPSV2378 34 C E_ 25-foot grid <br /> 77 309 499 YL <br /> -Sv 3 6 3 2.38 T, <br /> 19.7 Proposed Soil Vapor <br /> - Sampling Probe Locations <br /> 10 - $.23 <br /> 15.6 49.9 286 OS <1.3 35 <br /> 3 41 Commercial Soil Vapor ESL <br /> 3.9 2,540 4520 for TCEIS 100 gg/m3 <br /> _r 366 <br /> Southern Plume Monitoring Well <br /> PSG Sampling Locations(July 2020) Passive Soil Gas(PSG)Sampling Location ID <br /> 0 50' <br /> PSG Sampling Locations(December 2020) Soil Vapor TCE Concentration inµg/m3(micrograms per cubic meter) <br /> PSG Sampling Locations(February 2021) Approximate scale <br /> PROJECT TITLE <br /> PROPOSED SOIL VAPOR SAMPLING PROBE LOCATIONS FIGURE 4 <br /> SOIL VAPOR SAMPLING WORK PLAN & DATE <br /> LODI SOUTHERN PLUME (LSP) PSG SAMPLING TCE CONCENTRATIONS 10/13/2021 <br /> C.t"L LI''Dm TLCF CLIENT <br /> cciE R� iP � CITY OF LODI, PUBLIC WORKS DEPARTMENT <br /> iw <br />