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CHRONOLOGY <br /> CORRAL HOLLOW LANDFILL/I-580 <br /> SITE CODE: 1713 <br /> 02/20/96 2 USTs removed under permit and inspection; <br /> soil contamination found under tanks and <br /> dispenser. <br /> 04/15/96 UAR completed by EHD due to diesel <br /> contamination evidenced at time of tank <br /> removals . <br /> 05/15/96 Site placed in LOP for further assessment . <br /> 06/03/96 EHD approved Work Plan to remove <br /> contaminated soil for on site bioremediation. <br /> 06/26/96 First phase overexcavation performed on this <br /> date . Soil removed and soil samples taken. <br /> Diesel concentrations of 9000 ppm was found <br /> at 17 feet . <br /> 09/10/96 A second phase overexcavation was performed <br /> and soil samples taken. All samples taken in <br /> the final excavation were below detection <br /> limits . <br /> 06/11/97 The soil stockpile bioremediated on site was <br /> sampled and 120ppm TPH-Diesel was detected <br /> with BTEX below detection limits . The <br /> stockpile was returned and used as backfill <br /> in the upper portion of the excavation. <br /> 11/14/97 Site chronology updated, Case Closure Summary <br /> completed, and file referred to the CVRWQCB <br /> for closure concurrence . <br /> chroni58 <br />