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Calculations for Radius of Influence <br /> Pump test at MW-3R , 10/ 13/2006 <br /> Distances from Pumping well to observation wells <br /> Well d north 3r d east 3r linear distance to MW-31R in feet in meters <br /> MW-3r 0.3048 m/ft <br /> MW-22 10.4 1 .3 = ( ( 10.4)^2 + (1 .3)A2 )^1 /2 10.48 3. 19 m <br /> MW-23 21 .5 0.9 = ( (21 .5)^2 + (0.9)A2 )^1 /2 21 .52 6.56 m <br /> MW-21 35.2 43.9 = ( (35.2)^2 + (43.9)^2 )^1 /2 56.27 17. 15 m <br /> Steady State / Final Drawdown in each well lin feet) <br /> Well Distance Drawdown <br /> MW-3R 0 3.99 <br /> MW-22 10.48 1 . 15 <br /> MW-23 21 .52 0.69 <br /> MW-21 56.27 0. 12 <br /> See Drawdown versus distance charts for estimate of distance for zero drawdown. <br /> A plot of the data shows that drawdown would become immeasurable (less than 0.01 feet) at approximately <br /> 95 to 100 feet from MW-3R. Radius of influence (R) is, therefore, estimated at 95 feet. <br /> The best fit line for the drawdown versus distance data has the formula y = 2.8435e^(-0.0583x). <br /> at 95 feet y = 2.8435*e^((-0.0583)*(95)) y = 0 .01118 <br /> at 100 feet y = 2.8435*e^((-0.0583)*(100)) y = 0.00835 (immeasurable) <br /> R = 95 feet <br /> R = 28.96 meters <br /> i <br />