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WORK PLAN • <br /> ENVIRONMENTAL HEALTH DIVISI(MONITOR WELL INSTALLATION =a p <br /> 304 E.Weber Ave.Third Floor <br /> P. O. Box 388, Stoc n CA 95201-0388 Herman & Helen's Marina <br /> Approved � Venice Island Ferry <br /> Denied ❑ <br /> Conditions Stockton, CA 95219 o 0 a LL <br /> Date -l•g-el-1 by �7 aLe <br /> Prepared by: <br /> -06 Aw,a,J Condor Earth Technologies, Inc. <br /> c�¢DunpwPc;�Q �vatturJ <br /> wt vain, co�YTe+rLrta>J z <br /> �ESnil May 30, 1997 <br /> LL � <br /> m # <br /> r 0 C <br /> 1.0 INTRODUCTION a ~ a LL <br /> The proposed drilling and installation of four (4) monitor wells at Herman & Helen's Marina, located <br /> at Venice Island Ferry, near Stockton, California, are described in this work plan (Figures 1 and 2, <br /> Appendix A). The work plan was prepared in accordance with recommendations contained in the Soil <br /> and Groundwater Imestigation Report, prepared by Condor Earth Technologies, Inc. (Condor), dated <br /> September 30, 1996. The recommendations were approved by Mr. Ronald Rowe of the San Joaquin <br /> County Public Health Services/Environmental Health Division (PHS/EHD). This work plan was <br /> prepared by Condor at the request of Mr. David Smith, Herman & Helen's Marina. <br /> The purpose of the well installation is to investigate and monitor the lateral extent of gasoline and <br /> diesel contamination at the site (Figure 3, Appendix A). The monitor wells will be used to determine <br /> the groundwater gradient and to monitor groundwater contaminant concentrations (TPH-G, BTEX, <br /> MTBE, and TEPH). Based on the monitoring data the site may be evaluated in the future in <br /> accordance with the Standard Guide for Risk Based Corrective Action (RSCA) ASTM E1739-95 to <br /> determine if the site warrants closure or active remediation. <br /> The investigation will be conducted in accordance with the PHS/EHD, Reclamation District #2029, <br /> and the California Regional Water Quality Control Board (CRWQCB) guidelines and requirements. <br /> The work plan includes a site background, and a description of the proposed fieldwork and chemical <br /> analyses. A site specific Health and Safety Plan is located in the Appendix. <br /> 2.0 SITE BACKGROUND <br /> The subject site is located on Eight Mile Road, at Venice Island Ferry, approximately 5 miles <br /> northwest of Stockton, California, (Figures 1 and 2, Appendix A). On October 30, 1991, Warren E. <br /> Gomes Excavating, Inc., of Rio Vista, California, excavated and removed three (3) USTs (TKI, TK2, <br /> and TK3) from the site. The USTs contained gasoline and diesel fuel. A Condor representative was <br /> on site during the UST removal to collect soil samples. The field activities were observed by Carol <br /> Oz of the PHS/EHD. A small hole was found on the lower fill end of TK3 (diesel tank). Petroleum <br /> staining and odors were noted in the soil beneath the former locations of the USTs. Groundwater was <br /> not encountered during the UST removal. Six (6) soil samples were collected by Condor from the <br /> 4 <br /> • CONDOR <br />