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County EHD by January 15, 1995; see EXHIBIT B for details. Wm_ <br /> J Hunter & Associates was retained by the owners on January S , <br /> 1995, and due to the short lead time, requested extensions in <br /> order to prepare the workplan, which is submitted here. <br /> WORKPLAN FOR SOIL/GROUNDWATER INVESTIGATION <br /> Because of serious space constraints, excavation of additional <br /> soil as not considered feasible, & mobilization of an auger rig <br /> will be extremely difficult. Utilizing the Leaching Potential <br /> Analysis worksheet for gasoline, (Table 2-1 from the LUFT <br /> Manual, ) the levels of contamination measured in the soil sample <br /> taken from beneath the tank site exceed those allowable to left <br /> in place. Therefore, we are proposing to place one ( 1 ) soil <br /> boring in the center of the site of the removed UST. The soil <br /> boring will be advanced to groundwater, estimated to be at about <br /> 50 ' bgl at this location; it will then be deepened to at least <br /> 10' below the water table an order to complete as a monitoring <br /> well The proposed location of that soil baring/monatorang well <br /> is shown on PLATE V, the actual location of the removed UST & <br /> numerous other features will be accurately determined prior to <br /> commencing operations. <br /> All field activities will be under the direction of a registered <br /> geologist from Wm J Hunter & Associates A general health & <br /> safety plan is attached as EXHIBIT I . <br /> WORKPLAN. <br /> 1 Mobilize a properly licensed auger rig equipped with <br /> sufficient clean auger flights to complete the soil boring/monT - <br /> toring well without the necessity of decontaminating equipment. <br /> The rag will be equipped with an approved core-sampling device <br /> designed to hold metal tubes for obtaining soil samples The <br /> coring equipment will be operated either by a conventional drive <br /> hammer, or a wireline operated system to allow continuous coring <br /> of desired PLATE V is a general site map showing the proposed <br /> location of the soil boring/monitoring well . <br /> 2. Cores will be taken at 5' intervals from 5' bgl to the <br /> capillary fringe; a portion of each core will be promptly covered <br /> with teflon tape & plastic end caps, sealed with duct tape, <br /> labeled & placed in a sealed ice chest for later transport to a <br /> State Certified laboratory for analysis. Unused core material <br /> and drill spoils will be stored in metal drums, clearly labeled, <br /> and stored on location pending results of laboratory analysers. <br /> 3 After obtaining a soil sample from the capillary fringe, the <br /> hole will be advanced at least 10 feet below the water table and <br /> completed as a monitoring well. It will be completed as shown on <br /> 4 <br />