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� ti.rr <br /> WORKPLAN FOR REMOVAL OF ADDITIONAL CONTAMINATED SPOIL FROM SITE <br /> OF FORMER UST. <br /> Jim Thorpe Oil, Inc. equipment & personel will be used to perform <br /> the work as proposed below. Certificates of insurance & con- <br /> tractor' s licence information are on file with San Joaquin <br /> County. All work will be performed under the direction & <br /> supervision of a Registered Geologist from Wm. J. Hunter & <br /> Associates. A general health & safety plan is attached. <br /> 1 . The locations of all known underground utilities, water & <br /> sewer lines will be determined prior to beginning work. Extreme <br /> care will be exercised during excavation to avoid contact with <br /> known & unknown lines, etc. <br /> 2. Spoil will be removed using a backhoe bucket or excavator; it <br /> will be stored on site on plastic in the general area shown on <br /> PLATE III . Any removed asphalt, concrete, or other foreign <br /> materials will be separated from removed spoil, if possible. <br /> 3_ It is planned to enlarge the existing excavation approxi- <br /> mately 3 feet to the west & east, as close to the building as <br /> �. possible on the south, and 7 feet to the north, as shown on PLATE <br /> Ill . The final size and configuration will depend upon <br /> conditions encountered as work progresses, as directed by the <br /> Geologist in charge. It is estimated that about 140 cubic yards <br /> of material will be removed. <br /> 4. Groundwater was measured at 13. 5' below grade in September. <br /> It is planned to excavate to a depth of at .least 15 feet in order <br /> to remove as much spoil as possible. CLays & silty clays were <br /> logged down to and below 15 feet during placement of the three <br /> monitoring wells on the site; significant caving of the sides of <br /> the excavation is not anticipated. <br /> 5_ Upon completion of excavating operations, soil samples will <br /> be collected at the approximate locations shown on PLATE III, or <br /> as directed by the Geologist and County EHD representative_ <br /> Samples will be collected from the teeth of the backhoe bucket or <br /> excavator by pushing a clean metal tube into the material to <br /> obtain a representative sample. The tube will be promptly sealed <br /> with teflon tape & plastic end caps, & thoroughly wrapped with <br /> duct tape. The sample will be labeled & placed on ice in a <br /> closed container pending transport to the laboratory. <br /> 6. The preserved samples will be transported under chain of <br /> custody to FGL Environmental laboratory with instructions to <br /> 3 <br />