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• <br /> GETTLER - RYAN INC. <br /> CLOSURE REPORT <br /> at <br /> Chevron Seivice Station #9-1848 <br /> 1257 Yosemite Avenue <br /> Manteca, California <br /> Report No 346392 02 <br /> INTRODUCTION <br /> At the request o1 Chevi on Pi oducts Company(Chevron), Gettler-Ryan Inc (GR) has prepai ed <br /> this report requesting i egulatory closure for Chevron Station#9-1848 located at 1257 Yosemite <br /> Avenue in Manteca, California This Closure Report presents the data requested in the <br /> Tic-Regional Board Staff Recommendations For Preliminary Investigation And Evaluation of <br /> Underground Tank Site%, Appendix B, Request For Closure, dated Mai ch 1, 1994 <br /> • Site Description <br /> The site is an active scivice station located north of State Route 120 (Yosemite Avenue) in <br /> Manteca, California The current facilities consist of a station building, two dispenser <br /> islands, and thice underground storage tanks (USTs) that shaic a common pit near the east <br /> boundary of the subject site The topography in the vicinity is flat lying at an elevation of <br /> approximately 27 feet above mean sea level (MSL) Locations of pertinent trite Icatures are <br /> shown on Figure 2 <br /> SUMMARY OF ENVIRONMENTAL WORK <br /> Locations of the former UST excavations, groundwater monitoring wells, and soil boring <br /> locations are shown on Figure 2 Soil chemical analytical data are summai 17ed in Appendix <br /> A Histo tial gioundwatei monitoring and chemical analytical data me summai ized in <br /> Appendix B A cluonological synopsis of environmental investigations and remedial activities <br /> performed at the site is presented below <br /> ® In June 1991, GeoStrategies Inc (GSI) advanced four exploratory soil borings in the <br /> vicinity of the present gasoline underground storage tank (UST) excavation Soil <br /> samples collected indicated the presence of petroleum hydrocarbons <br /> 346392 02 d <br /> 6747 Sierra Court , Suite J Dublin , California 94568 • ( 925 ) 551 - 7555 <br /> f <br />