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1 <br /> RESNA <br /> SITE SAFETY PLAN <br /> FACHdTY BACKGROUND <br /> ' In April 1991, six underground storage tanks were removed from the property. Tank <br /> removal sample analysis indicated that both diesel and gasoline had impacted the soil <br /> ' beneath the tank. Based upon this information San Joaquin County Public Health Services <br /> required further soil and groundwater investigation. <br /> On October 16 and 17, 1991 five vertical and one angle soil borings were advanced to <br /> maximum depths of46 and 12.5 feet, respectively to assess subsurface conditions at the site. <br /> In March of 1992, one soil was advanced to 85 feet deep and completed as a monitoring <br /> well. <br /> Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX) and total petroleum hydrocarbons <br /> as gasoline (TPHg) consitituents are present in the former gasoline tank pit and beneath the <br /> {� former pump island. Total petroleum hydrocarbons as diesel (TPHd), polychlorinated <br /> biphenols (PCB's), cadmium, chromium, lead and zinc are present in the soil in the former <br /> waste oil tank. TPHd is present in the soils of the former diesel tank. <br /> ' WORK PLAN <br /> Task One: Prepare a Workplan for Field Work outlined below. <br /> Task Two: Prepare for field work, obtain permits, modify Site Safety Plan. <br /> Task Three: Backfill and compact former Gasoline Tank Pit. <br /> ' Task Four: Drill/Install 3 Vapor Extraction Wells and 3 Monitoring Wells <br /> Task Five: Survey, Develop and Sample new and existing wells. <br /> Task Sig: Conduct a one day Vapor Extraction Test <br /> ' Task Seven: Prepare a Summary Report <br /> PAGE 2 <br />