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MAR Eta 'BB 22:39 EXCEL ­tiH/SF P.5 <br />Econo Station EXCELTECH March 6, 1988 <br />Page Project No. 2419D <br />Pump test discharge water was directed into two, 21 thousand gallon <br />temporary storage tanks, treated utilizing activated carbon, and discharged <br />intc' a sanitary sewer under permit by the City of Stockton, Municipal <br />Utilities Department. Discharge flow was controlled and metered during <br />each test by utilizing a flow meter and piping array. The system was <br />designed to mimimize air cavitaiinn and turbulent flow in the discharge <br />during pumping. See-through King Instrument K72 series flow meters were <br />used to observe and accurately meter (+/- 0.1 gpm) flow throughout the <br />tests. <br />Tes!ing and mathematical analysis of aquifers relies on formulas and <br />assumptions developed by C.V. Theis (1935) and later commonly recognized <br />methods. The implied assumptions Liherent for analysis, in these particular <br />tests, were as follows: <br />1. The aquifer is homogeneous, isotropic, of uniform thickness, and of <br />infinite areal extent. <br />2. The initial piezometric surface is horizontal. <br />3. The well is pumped at a constant -discharge rate. <br />4. The pumped well penetrates and receives water from the full <br />thickness of the water -bearing formation. <br />5. Well storage can be neglected. <br />6. Water removed from storage is discharged instantaneously with a <br />decline of head. <br />7. The aquifer receives no recharge from any source. <br />