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� f� z x � N ��,�... �€ � z c�•y ,�' � ----�� �_ _��' �� -��,�x��� -ry -;:3� � ., �ay Yom;- ��r <br /> t <br /> Appendix C <br /> AQUIFER CALCULATIONS <br /> This appendix includes a description of the calculations performed to <br /> determine tra.ismissivity and graphs of the data. <br /> T <br /> Transmissivity pis defined as the ease with which water moves through a <br /> unit width of an aquifer. It varies by several orders in magnitude <br /> depending on the aquifer. A typical transmissivity for a producing <br /> aquifer is 100,000 to 1,000,000 gallons per foot per day (gpf/day). In <br /> this investigation three trans¢nissivities were calculated; two were <br /> calculated using drawdown data from the recovery well (Plate C-1) and <br /> the nearest well . E-3 (Plate C-2), and one from well E-3 (Plate C-3), <br /> during the reactivation of the system. For the recovery calculations it <br /> was assumed drawdown from pumping had reached a steady state at a con- <br /> stant discharge rate of 15.5 gpm. The transmissivity values range from <br /> 5.000 to 8,000 gpf/day. This type calculation is based on assumptions <br /> such as the aquifer is homogeneous, 'isotropic and infinite in areal <br /> extent. Because of these assumptions these values should only be <br /> considered best estimates. <br /> r. <br />