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ATCAssociates SITE SAFETY PLAN <br /> FACILITY BACKGROUND <br /> An estimated 1,100-gallons of diesel fuel reportedly leaked from a 5,000-gallon fiberglass tank as <br /> a result of an inadvertent puncture. The tank was repaired and returned to active service until <br /> it was removed in February 1992. When the tank was removed, free product was noted floating <br /> on the groundwater within the excavation. <br /> { <br /> Subsurface investigations were performed at the site in May 1988 by Ensco Environmental, in <br /> October 1989 by WaterWork Corp., and in August 1993 by RESNA Industries Inc. A total of <br /> eleven borings (B-1 and SB-1 through SB-10) were advanced at the site and six monitoring <br /> wells (MW-1 through MW-6) were installed at the site to evaluate the extent of impacted soil <br /> and groundwater. Soil was found to be impacted between 7 feet and 18 feet below ground <br /> surface(bgs)(RESNA,March 1994). <br /> WORK PLAN <br /> I <br /> Task 1 Perform a 24-hour pumping test on well MW-4. A generator will supply power to the <br /> pump and the pump will extract 3 gallons'of water per minute from the well. Extracted <br /> groundwater will be discharged to the City of Stockton sewer system under permit. <br /> Task 2 Supervise the advancement of three soil borings to 15 feet bgs using a direct push <br /> rig. At least one soil sample will be collected from each soil boring will be collected <br /> from each boring. Samples will be analyzed for TPHd (EPA Method 8015 <br /> Modified). <br /> I <br /> PAGE 4 <br />