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events (for example, elevated TCE concentrations and the presence of cis-1,2-dichloroethene and vinyl <br /> chloride in the sample). A confirmation sample was collected in Q2 2021, and TCE was not detected <br /> above the residential SV-ESL.This was further confirmed with the Q3 2021 sampling event,where TCE <br /> again was not detected above the residential SV-ESL.The results for Q1 2021 are therefore not <br /> considered to be representative of subsurface conditions. SV-124 is located in the City Right-of-Way in a <br /> residential area near 4th Street and Elm Avenue (Figure 2). <br /> The results of soil vapor sampling conducted in 2021 support the conclusions identified in the Third <br /> Interim Report,which include the following: <br /> • Generally, if volatile organic compound (VOC)concentrations are below SV-ESLs in the <br /> shallowest soil vapor samples collected, the VI risk is low.TCE concentrations did not exceed the <br /> applicable SV-ESLs in the shallowest soil vapor samples collected in this investigation (from a <br /> depth of 5 feet bgs), indicating that the potential for TCE VI is low (Table 1). <br /> • TCE concentrations in soil vapor have exceeded applicable SV-ESLs in deeper soil vapor probes <br /> at seven locations (as discussed above), but none of these exceedances were from probes at the <br /> 5-feet depth. <br /> • To confirm that the VI pathway is incomplete,further evaluation of VI is recommended in <br /> residential areas near 4th Street and Walnut Avenue and the commercial area near Vt Street and <br /> South Stockton Avenue, as shown on Figure 3. <br /> 4 -MICH <br />