Laserfiche WebLink
Work Plan <br /> Stewarts Beacon <br /> Project No.01-17.1.2 <br /> March 12„1940 <br /> Page: B <br /> calculations using the equations in Section 3.2 are subject to lnsuffiden2y known <br /> Parameters. This is true Particularly for sediment properties, expressed as <br /> highly variable grain size distribution or sorting, cn?ating stratification <br /> patterns that influence ground water flow. <br /> i-F <br /> The testing will include yield and drawdown measurements in the extraction <br /> wells amt draw-dawn in adjacent monitoring wells. 'These pump tests will be <br /> perform-d for 10 to 12 hours. The resulting draw-down can be plugged into <br /> equation'3.1 to determine the hydraulic conductivity of the sediments more <br /> prec?seI,-: However, the draw-down in the surrounding sediments can be <br /> detetnuned graphically directly from the draw downs in the monitoring wells <br /> if they are strategically placed. This information will better enable <br /> Geological Technics to evaluate the proper pumping rate during the interim <br /> remediation. <br /> During the well testing,the water will be pumped into holding tanks for future <br /> treatment. <br /> w� 3.4.4 Installation and Adjustment of Complete System <br /> ° r The treatment system will be installed and adjusted for maximum efficiency. <br /> This will include the sampling for laboratory analysis of the water from the <br /> ". sampling Forts,the emissions air with hydrocarbon vapors emanating from the <br /> aeration tank Pumping rate will be adjusted so that Optimum drawdown is <br /> created. <br /> 3.4.5 Monitoring the System <br /> Monitoring wil! include laboratory analysis of the expelled air containing <br /> �. hydrocarbon vapors,and water from the well,from after the aeration tank,and <br /> between and after the carbon canisters: It will also include water level <br /> measurements in the adjacent monitoring wells. <br /> Water samples will be drawn from the sampling ports at the well, after the <br /> aeration tank, and after the carbon canister and analyzed for BTEX and <br /> gasoline. The sampling schedule will be as follows: <br /> I. After starting system. <br /> 2. Every week for the duration of the project. <br /> When the levels of BTEX and gasoline have all been below State_drinkin <br /> -water-standards-for two-consecutive-weeks,the interim remediation will be J <br /> halted and the results presented to the regulatory agents for evaluation. <br />