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67 <br /> Envirotactics <br /> An Earth Systems Company <br /> Reverse-Distance Drawdown Analysis <br /> Calculate drawdown using known transmissivity and Distance from Pumping Center(feet)—rO=34 feet <br /> storage coefficient values.Method can be used with l0^0 l0^1 to-2 <br /> transient flow conditions(Jacob straight-line distance- -0 <br /> drawdown). / <br /> 50 <br /> Return to Modeling Menu loo <br /> 150 <br /> 3 200 <br /> l <br /> a j <br /> Parameters Values a 250 <br /> Transmissivity(square feet/day) 30 a <br /> 300 <br /> Storage Coefficient(dimensionless) 0.06 <br /> Pumping Rate(gallons per minute) 90 350 <br /> Length of Test(minutes) 1440 400 <br /> There are 1440 minutes per day <br /> Radius of Well(feet) 0.6 Slope of Line= -211.41 <br /> Using this tool with the previously determined aquifer characteristics and a 90 gallon per minute pumping <br /> rate, the Proposed Community Well does not produce drawdown approximately 40 feet away from the well. <br /> 5.3 Time Drawdown Analysis <br /> This method calculates transmissivity and storage coefficient using time and drawdown values from an <br /> aquifer test. This method can be used with transient flow conditions (Cooper-Jacob straight-line time- <br /> drawdown). <br /> This method is not applicable to this study since: <br /> • The pumping rate was not constant, and <br /> • No drawdown was measured away, in a monitoring well, situated at a certain distance from the <br /> Proposed Community Well. <br /> Envirotactics, LLC Page 17 of 20 Groundwater Modeling Report <br /> (732) 449-0077 Project No.6704 <br />