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C <br /> T <br /> CONDOR EARTH TECHNOLOGIES INC. <br /> July 24,2000 1125 N.Golden State Blvd. 188 Frank West Circle <br /> Suite G Suite I <br /> Turlock, CA 95381 Stockton, CA 95206 <br /> (209) 668-9234 (209) 234-0518 <br /> FAX(209) 668-9248 FAX(209) 234-0538 <br /> Mr.Ron Rowe <br /> San Joaquin County <br /> Public Health Services <br /> Environmental Health Department <br /> P.O. Box 388 <br /> Stockton, CA 95201-0388 <br /> RE: Status Report and Amendment to Work Plan (dated May 27, 1998)and Work Plan Addendum (dated <br /> July 9, 1998),Herman & Helen's Marina,Venice Island Ferry,Stockton,CA <br /> Dear Mr. Rowe: <br /> This Status Report and Amendment to the above referenced Work Plan and Work Plan Addendum was prepared in <br /> response to your letter dated June 30,2000,titled"Compliance and Characterization". The Work Plan and Work <br /> Plan Addendum were prepared by Condor Earth Technologies,Inc. (Condor)at your request and were,with <br /> modifications, subsequently approved by you. The approved scope of work for the site consisted generally of a <br /> groundwater receptor survey, sampling and analyses of pre-and post-treatment facility drinking water samples,and <br /> additional groundwater investigation in the easter portion of the site. The additional groundwater investigation <br /> included soil and groundwater sample collection at nine shallow,direct-push borings. Your letter dated June 30, <br /> 2000, indicated that vertical groundwater investigation was required in addition to the original scope of work. This <br /> letter is intended to provide a summary of the work completed,to date,and to describe the additional, out-of-scope <br /> vertical groundwater characterization that you requested. <br /> Status Report <br /> Condor conducted a groundwater receptor survey within a 1,000-foot radius of the site in the winter of 1998. The <br /> driving Tcconi:-.issance portion of:hc-sui-vey indicated no readily id'.+nt't+able water wells-itbin the study area. in <br /> response to Condor's request for water well information,the Department of Water Resources(DWR)identified one <br /> water well. The water well,however, is at least 2,000 feet southwest of the site. A detailed description of the <br /> groundwater receptor survey results will be provided in a report of findings to be submitted for the MTBE plume <br /> investigation. <br /> On October 1, 1998,Condor collected facility pre-and post-drinking water samples. Laboratory analyses indicated <br /> that a low concentration of MTBE was detected in the pre-treatment water sample and low concentrations of <br /> chloroform, bromodichloromethane,and dibromochloromethane were detected in the post-treatment drinking water <br /> sample. A description of the sampling procedures,the sampling locations,and the laboratory analytical results of <br /> the drinking water samples were included in the Report—Quarterly Groundwater Monitoring, Third Quarter, 1998, <br /> dated November 23, 1998 and prepared by Condor. <br /> Amendment to Work Plan and Work Plan Addendum <br /> The original scope of work for MTBE plume definition as proposed in the Work Plan,as modified by the Work <br /> Plan Addendum,and subsequently approved by you included the advancement of nine shallow direct push borings. <br /> ENVIRONMENTAL GEOLOGICAL ENGINEERING GEOTECHNICAL <br /> http://www.condorearth.com <br />