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ENGINEERING-SCIENCE, INC. <br /> 290 Elwood Davis Road,Suite 312•Liverpool, New York 13088•(315)451-9560•Fax:(315)451-9570 <br /> II <br /> 0C i- i 190 <br /> .,4 <br /> October 12, 1994 ENV!I1,01VN;ENTAE HEA j <br /> PERA41T/SERVICES <br /> Mr. Michael J. Infurna <br /> San Joaquin County <br /> Department of Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> 1601 East Hazelton Avenue <br /> Stockton, California 95201 <br /> Re: Greyhound Terminal <br /> Location #8969 <br /> Stockton, California <br /> Dear Mr. Infurna: <br /> On behalf of Greyhound Lines, Inc. (Greyhound), Engineering-Science, Inc. (ES) <br /> is pleased to present the August 1994 Quarterly Status Report for the Greyhound <br /> terminal in Stockton, California. <br /> The information contained in this report is presented in the format shown in <br /> Appendix A of "Tri-Regional Board Staff Recommendations for Preliminary Evaluation <br /> and Investigation of Underground Tank Sites (August 1990)". Greyhound has <br /> reviewed and approved this report, and has assigned ES to be their designated <br /> representative for preparation and submittal of the quarterly status reports. The <br /> enclosed report has been completed accurately, and in accordance with applicable <br /> LUFT and Tri-Regional requirements. Greyhound agrees with the conclusions and <br /> recommendations outlined in this cover letter and the attached semi-annual status <br /> report. <br /> Groundwater samples were collected at the Stockton facility on August 30, 1994, <br /> and analyzed for TPH-D (Modified EPA Method 8015) and benzene, toluene, <br /> ethylbenzene, and xylene (BTEX) (EPA Method 8020) in accordance with applicable <br /> requirements. Figure 1 provides a site map showing the monitoring well locations. <br /> BTEX parameters were not detected in any of the groundwater samples collected. <br /> TPH-D was detected at concentrations of 0.08 mg/l in MW-1, 0.13 mg/l in MW-2, and <br /> 0.08 mg/l in MW-3. Greyhound requests the analytical results obtained by the San <br /> Joaquin County Department of Public Health Service's independent analysis of the <br /> groundwater samples split on August 30, 1994. <br /> PARSONS PAMSYROI\VOLI:WP\725218\08969\08969LO4.DOC RO <br />