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CHRONOLOGY <br /> CORRAL HOLLOW LANDFILL/I-580 <br /> SITE CODE: 1713 <br /> APN: <br /> 02/16/96 One 1500 gal . diesel UST removed under EHD <br /> permit and inspection. Soil samples were <br /> collected and positive for diesel (54000 ppm <br /> diesel, 660ppb xylene) at one foot below <br /> dispenser. Further excavation was proposed <br /> for remediation. <br /> 04/15/96 EHD completed and filed UAR for contamination <br /> discovered at time of TR. <br /> 05/01/96 San Joaquin Co. Public Works Dept. prepared a <br /> work plan to excavated and treat contaminated <br /> soil on site with additional sampling. <br /> 05/15/96 Entered LOP as simple soil case with <br /> remediation proposed. <br /> 06/26/96 Overexcavation was performed under dispenser <br /> and former UST bottom; 100 cubic yards of <br /> soil removed and stockpiled on site. Soil <br /> samples were taken. Two samples were <br /> positive at 8 . 5 and 17 feet BGS. <br /> 09/10/96 An additional 100 cubic yards of soil <br /> removed from the NW wall and tank bottom and <br /> 3 soil samples collected which were all ND. <br /> Stockpiled soil samples positive for TPH <br /> diesel . <br /> 06/11/97 Additional confirmation stockpile samples <br /> were collected after exsitu bioremediation <br /> was performed. One sample contained 60 ppm <br /> diesel, BTEX ND. Soil reused for backfill <br /> material . <br /> 10/27/97 Site is low risk soil only. File prepared <br /> for CVRWQCB closure concurrence. <br />