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• Ms Margaret Logono <br /> August 30, 2001 <br /> Page 3 <br /> Table 1. Former Diesel UST Excavation Analytical Results <br /> Total TPH <br /> Date Benzene Toluene Ethylbenzene Xylenes as diesel <br /> Sample ID Collected (mg/K (mg/K (mg/K m /Kg) (nig/K <br /> SP1,SP2,SP3,SP4a 5/06/99 <0050 <0050 <0050 0 050 3800 <br /> 1 SP5,SP6,SP7,SP8a 5/06/99 <0050 <0050 <0050 014 5000 <br /> a+ w5 + ,►" SP9;SP10,SPlla 5/06/99 <050 <0050 018 032 7900 <br /> OX-1,OX-2b 5/21/99 <a050 0 050 <0050 <0050 5700 <br /> OX-3,OX-4b 5/21/99 <050 <0050 <0050 <0050 4800 <br /> OX-5,OX-6b 5/21/99 1 <0050 <Q050 <0050 <0050 1700 <br /> Notes mg/Kg=magram per Kdogram <br /> From BC s May 25, 1999 Workplan <br /> b From BC's June 24, 1999 Workplan <br /> The excavated soil was stored on site, placed on and covered with plastic The soil <br /> was moved into wind rows several tunes over the past two years in an effort to <br /> enhance natural bio-degradation of the petroleum hydrocarbons In March and <br /> April 2001,the soli was properly characterized by and disposed of at Forward <br /> Landfill in Manteca, Cahfornia T&T transported the soli to Forward Landfill <br /> under non-hazardous waste manifests <br /> 2.0 SCOPE OF WORK <br /> This section outlines the site activities under the approved scope of work <br /> 2.1 Workplan Approval <br /> On May 25, 1999, BC submitted the Workplan for Soil SxVhngofFrnmerDa el UST <br /> Ocer Excac-am for soil sampling in the UST over-excavatlbn However, because <br /> the open excavation was an impairment to the truck thoroughfare, T&T and the <br /> PHD/EHD agreed that the excavation could be backfilled without any additional <br /> over-excavation and soil sampling T&T and the PHD/EHD further agreed the <br /> vertical and lateral extent of impacted soil would be delineated by borehole soli <br /> sampling On June 1, 1999, T&T faxed a letter to the PHD/EHD memorializing <br /> the PHD/EHD's verbal approval to backfill the UST excavation The <br /> May 25, 1999 Workplan was never implemented <br /> On June 24, 1999 BC submitted the Workplan for the Fon rer Diesel UST Sorb <br /> i nr-stagatwn and Sxvnary of Stockpde Sample Analyses (Workplan} to the PHD/EHD <br /> for a soil investigation that would determine the lateral and vertical extent of the <br /> soil contamination T&T received approval from the PHD/EHD of the <br /> �} workplan on August 16, 1999 <br /> P 116000116271\Diesel Tank\Final Diesel UST Rpt doe <br />