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_ <br /> ig <br /> MAR 86 188 22:20 EXCELTECH/SF P.6 <br /> Fast-Gas Station EXCfIiIbTICN March 6, 1988 <br /> Page 3 Project No. 1813G <br /> } <br /> a aquifer, all of which are described below. The aquifer characteristics of <br /> hydraulic conductivity, transmissivity and storage coefficient were graphed <br /> E ; <br /> to visually display the data, and the appropriate values were calculated. <br /> Data was collected from pressure transducers placed at optimum, depths In <br /> each observation well. The pressure transducers sent data instaneously to <br /> an In-Situ SE 200 datalogger which stores information on cassette tapes. <br /> si <br /> The data collected on the cassette tapes was subsequently down-loaded, <br /> manipulated, and displayed on Apple Macintosh computer graphics. <br /> i <br /> i <br /> i� Pump test discharge water was directed into a 21,000 gallon Baker storage � <br /> tank and then treated utilizing an on-site. air stripper following aquifer I <br /> Li <br /> testing operations. <br /> YY��y�ii} Discharge flow was controlled and measured during each test by utilizing -a <br /> ra ;. <br /> flow meter and piping array. The system was designed to mimimize air k <br /> , cavitation and turbulent flow in the discharge during pumping. See-through <br /> King Instrument K72 series flow meters were used to observe and accurately <br /> t meter (+/a0.1 gpm) flow throughout the tests. <br /> Testing and mathematical analysis of aquifers relies on formulas and <br /> assumptions developed by .G.V. Theis (1935) and later commonly recognized <br /> methods. The implied assumptions inherent for analysis, in .these parcu -- ---- <br /> E , i <br /> tests, were as follows: <br /> TIC) <br /> 1. The aquifer Is homogeneous, Isotropic, of uniform thickness, and of <br /> A ht q <br /> i <br />