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Aspects of the development and/or use of the above referenced equations is also presented in Keely (1984), Keely and Tsang (1983), and McElwee (1991), as well as Javandel and Tsang (1986) and Grubb (1993) 5 2 CAPTURE ZONE PARAMETERS FOR WELL EW-1 The pumping rate from well EW-i is assumed to be 1 8 gallons per minute, resulting in a Q in the ' above equations of 346 5 Ft'/day This is the maximum pumping rate for well EW-1 as determined by the step drawdown test Lower pumping rates would result in proportionally ' narrower capture zones The aquifer thickness, parameter B, will be assumed to be equivalent to the saturated screened interval in the extraction well, 5 95 feet The thickness will vary with the seasonal fluctuations in ' water level and with dewatering effects The groundwater flow velocity, parameter U, is equal to the hydraulic conductivity multiplied by the potentiometric surface gradient and then divided by the porosity The hydraulic conductivity is derived from Figure 4 in the direction of the potentiometric surface gradient The potentiometric surface gradient direction used is that for the triangle with the ' outlying wells MW-4, MW-6, and MW-14 at the apices Before the test on August 19, 2000 the gradient direction is N 2 841W and the hydraulic conductivity is 83 9 Ft/Day, and for the March 16, 2000 groundwater monitoring event the direction is N 62 87°W and the hydraulic conductivity is 124 Ft/Day The potentiometric surface gradient for August 19, 2000 was 0 001635 and for March 16, 2000 the potentiometric surface gradient was 0 000746 The porosity will be assumed to be 0 20, a reasonable assumption from the storage coefficient determined from the 1000- minute test H 2 0 G E O L A GROUND MATER CONS00ANCY