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ernM <br /> : an Appendix A. Responsiveness Summary <br /> Martin Metals Finishing Inc. (Former) <br /> Stockton, California <br /> Response to Department of Toxic Substances Control (DTSC) Comments for CDIM's Preliminary <br /> Endangerment Assessment (PEA) and Supplemental Site Investigation (SSI)Work Plan (Work Plan), <br /> Martin Metal Finishing Inc. Stockton California, dated July 25, 2022. <br /> Comment Response <br /> • The GSB recommends the addition of up to Three sub-slab soil vapor probes were added <br /> three additional sub-slab vapor probes. to the scope of work within the MMF building <br /> These probes should be placed in the (MMF-VP-02 in the vicinity of the sump, MMF- <br /> vicinity of the sump, the former sludge VP-03 in the former sludge drying and storage <br /> drying and storage area, and the drainage area, and MMF-SV-01 near the drainage <br /> system. These additional subslab vapor system). The five sub-slab soil vapor probes <br /> probes should be installed and sampled in were renamed using the "VP" prefix for Vapor <br /> the same manner as MMF-SV-01 and MMF- Pin TM in the PEA Work Plan (Figure 5). <br /> SV-02. Sampling and analysis will be the same as <br /> dual-nested soil gas well samples. <br /> Page A-5 <br />