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TERRA PACIFIC GROUP 13900 Alton Parkway,Suite 122,Irvine,California 92618 <br /> Environmental Engineering.Consulting,and Constructor Phone(949)2974444•Fax(949)297-3625 <br /> December 17,2015 Project No. PGE-1066 <br /> Mr.Jeff Gymer <br /> Department of Toxic Substances Control <br /> 1515 Tollhouse Road <br /> Clovis, California 93611-0522 <br /> RE: Draft Post-Remediation Soil Gas Probe Destruction Workplan <br /> Former Lodi Manufactured Gas Plant Site <br /> 712 South Sacramento Street <br /> Lodi, California <br /> Dear Mr. Gymer: <br /> This Draft Workplan outlines the proposed destruction of soil gas probes PRSG-1 through PRSG-8 <br /> at the former Lodi Manufactured Gas Plant Site (Site) located at 712 South Sacramento street in <br /> Lodi, California (Figures 1 and 2). The locations of the soil gas probes are shown in Figure 2 <br /> (attached) and the boring logs and well construction details are presented as Attachment A. <br /> The destruction of the soil gas probes is proposed as part of Site closure activities and in accordance <br /> with the California Environmental Protection Agency (CAL EPA) Department of Toxics <br /> Substances Control (DTSC) approval of the post-remediation soil gas results presented in the Final <br /> Removal Action Completion report dated October 12, 2015, which show residual levels of COPCs <br /> in soil gas at the Site are safe and protective of future residential land-use (TPG, 2015). <br /> SCOPE OF WORK <br /> The scope of this proposed field program is presented in detail below. The scope of work includes: <br /> • Field preparation activities; <br /> • Destruction of soil gas probes PRSG-1 through PRSG-8; <br /> • Containerizing and sampling soil and water generated during soil gas probe <br /> destructions; <br /> • Characterization and appropriate disposal of generated soil and liquid wastes;and <br /> • Reporting on the completion of the soil gas probe destruction activities. <br />