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REPORT ADDITIONAL SOIL AND GROUNDWATER INVESTIGATION Ilerman & Ilclen's Marina Venice Island Ferry Stockton, CA Prepared by: ICondor Earth Technologies, Inc. December 11, 1997 1.0 INTRODUCTION Condor Earth Technologies, Inc. (Condor) conducted an additional soil and groundwater investigation on September 10, 15. and 18, 1997, at Herman &. Helen's Marina, located at Venice Island Ferry, near Stockton, California (Figures 1 and 2, Appendix A). Four monitor wells were Idrilled, installed, developed, surveyed, and sampled as part of the investigation. The purpose of the work was to further investigate the lateral extent of gasoline and diesel contamination at the site. The �%ork \vas co[ldueted at the request of i'Ir. David Smith of Herman & Hclen's Marina. This report includes a site background, a description of the field and analytical methods used to conduct the »ork. a description of the field and analytical results of the investigation, and conclusioiis.lrecommendations. The investigation was conducted in accordance with the Work Ilan for Monitor lf•rll Installation, dated May 30, 1997 (prepared by Condor). The ,\ork plan was approved by Mr. Ronald Rowe of the San Joaquin County Public Heaith Services/Environmental health Division (PHS/THD) Oil July 8, 1997. 1n subsequent telephone conversations with Condor, Mr. Rowe requested that the soil and ground\vater samples collected during the investigation be analyzed for gasoline oxygenates by EPA Method 8260 in addition to the analyses described by the approved Work Plan. The Work Plan was also approved by Reclamation District No. 2029, with conditions. in a letter dated July 17, 1997. ' Reclamation District No. 2029 indicated that Herman & Helen's Marina would be required to maintain viable well seals in the event of artesian flow and to properly abandon the wells following the ' groundwater monitoring program. ;i� CONDOR