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--­-290 ELWOOD DAVIS ROADz <br /> SLI�TE <br /> 12 <br /> LIVERPOOL <br />, LIVERPOOL NY 13088 <br /> ENGINEERING-SCIENCE, INC. TEL (315)451 9560FAX (315)451-9570 <br /> January 12, 1993 <br /> Mr Michael J Infuma a ii i <br /> ' <br /> - - - ; _ San Joaquin-County <br /> Department of Public Health Services <br /> Environmental Health Division JAN 14 IZ <br /> P O Box 2009 ENVIRC/N�K€NFIAl_ t FAIL H <br /> 1601 East Hazelton AvenueI4�f�l�w <br /> Stockton, California 95201 <br /> Re Greyhound Terminal <br /> Location #8969 <br /> Stockton, California f s <br /> Dear Mr Infurna <br /> Engineenng-Science, Inc (ES) is pleased to present, on behalf of Greyhound <br /> Lines, Inc (GLI), the third quarterly groundwater monitoring report for the GLI <br /> terminal in Stockton, California <br /> The information contained in the December Quarterly Status Report is presented in <br /> the format shown in "Appendix A" of the "Tri-Regional Board Staff Recommendations <br /> for Preliminary Evaluation and Investigation of Underground Tank Sites (August <br /> 1990)" GLI has reviewed and approved this report and has assigned ES to be their <br /> designated representative for preparation and submittal of the quarterly status reports <br /> The enclosed quarterly status report has been completed accurately, and in accordance _ <br /> with all applicable LUFT and Tri-Regional requirements GLI agrees with the <br /> conclusions and recommendations outlined in this cover letter and the attached <br /> quarterly status report <br /> Groundwater samples were collected at the Stockton facility on December 10, and <br /> December 12, 1992, and analyzed for TPH-D (DHS/LUFT method modified EPA <br /> Method 80151 solution preparation method 3510), and BTEX (EPA method 602) <br /> Monitoring well MW-1 was inaccessible due to flooding of the surface area <br /> surrounding the well on December 10 A sample from MW-1 was subsequently <br /> collected on December 12 after water had receded from over the well Figure 1 <br /> provides a site map showing the monitoring well locations The detection limits <br /> specified in the 1989 LUFT Manual (Appendix D, Table 3-5) were met by the <br /> analytical laboratory None of the analytes were detected with the exception of toluene <br /> which was detected at a concentration of 0 5 ug/1 in the groundwater sample collected <br /> from MW-1 <br /> A PARSONS COMPANY <br /> LML/5Y139 31/378 <br />