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1i17r lCt7IL t.7ihIL llLr I I o:)UViD JQH V1. VJ 11 10 ivu vu"' r UJ <br /> MY 2 7 1m <br /> CHRONOLOGY <br /> ABF FREIGHT <br /> 2427 W. YOSEMITE AVE <br /> MANTECA CA 95336 <br /> 03/18198 One 10,000-gallon diesel underground storage tank removed this date <br /> I Odor and discoloration noted Water in tank pit Soil samples and one <br /> grab groundwater sample collected and analyzed for total petroleum <br /> hydrocarbons as diesel (TPHd) and benzene, toluene, ethylbenzene and <br /> xylene (BTEX) <br /> I04/09/98 Soil analytical results evidenced up to 220 parts per million TPHd Water <br /> analytical results evidenced up to 53 ppm TPHd <br /> 04/09/98 Unauthorized Release Report and Prop 65 filed this date <br /> I04/24/98 Site entered into Local Oversight Program <br /> 06/02/98 NOR site letter sent to Chris Brown, ABF Freight <br /> 08/20/98 Sod and groundwater investigation began, three soil bonngs dulled and <br /> completed as shallow monitoring wells, Soil samples collected and <br /> analyzed for TPHd and BTEX <br /> i08/25/98 Monitoring wells were developed and sampled Samples analyzed for <br /> TPHd and BTEX <br />' 11/24/98 Site Characterization Report submitted, sail sample analysis from <br /> 08120/98 investigation all non-detect (ND) at approved detection limits, <br /> water samples from wells all ND <br />' 03/19/99 Confirmation groundwater sampling of the monitoring wells occurred this <br /> date Samples analyzed for TPHd, BTEX and MTBE <br />' 04/12/99 Report of groundwater analysis and request for closure submitted this <br /> date Sample analysis results ND for all constituents <br />' 05/14/99 PHSIEHD decision to recommend site closure Contamination appears to <br /> have been localized and to have not impacted groundwater <br /> I <br />