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68 <br /> Envirotactics <br /> An Earth Systems Company <br /> Time Drawdown Analysis <br /> Calculate transrnissivily and storage c gident using time <br /> and drawdown values frim an aquifer test Method can he <br /> used with transient flow conditions fCooper-Jacob straight <br /> line ti_drawdowal. <br /> Return to Modeling Menu <br /> a Time(minutes) Drawdown(feet) <br /> I <br /> a <br /> a <br /> 9 <br /> Olher Pararrreters <br /> Pumping Rate(gallons per minute) <br /> 6istance from Pumping Well(feet) <br /> uPioauloE nwr u,.,wdaw,.,ae denme euala�,m ne»e.r�n,m. <br /> Choose File I No file chosen <br /> 5.4 Reverse Time Drawdown Analysis <br /> This method calculates drawdown at a well over time using known transmissivity and storage coefficient <br /> values. This method can be used with transient flow conditions (Cooper-Jacob straight-line time- <br /> drawdown). <br /> I 1 ". I I ' I <br /> Reverse-Time Drawdown Analysis Reverse-Time Drawdown Analysis <br /> Cakulate drawdown M a well aver time using Calculate drawdown at a—1I aver time uvng <br /> known trarl5missWitY and storage caeK ianl Thos aher Pvmplag SI.—(minutes)-10=a�a,Ro6 W min— k—Lis it Mty and storage_He ient Time elver Pumping Swrwd fminue.al-tA'-557.568.06ainrrles <br /> valves.Method can Ge us ed with fr—wnt flow ,drum Method can be-d t—lent flow 3 <br /> conditions!Cooper-Iamb strayht-Ilnra time- conditions(Cooper-Jacob strai9htdine time <br /> drawdown) 150 drawdown), 3 <br /> SO <br /> Return to Modeling Menu Retum to Modeling Menu <br /> 300 \. <br /> Parameters Value 1. Parameters Values <br /> ira,rsmisaivi,y tsgeme 1-Udayl 30 \ TransmissirtYtsq.—fe dp 39 <br /> Storage Coerflrient ltlimerxunkss! 0.08 50 C-11-1 faimersionlessl <br /> P+uY(etg Rata 14m10nsper mie,aE! iV0 G a - -d P"Ply Raw(Palk-Par'mule) 90 W, a— a., 1)6 <br /> Lan==lmara a oat 14G0 Lrgt=df�Test llnlnulesl <br /> er o21 es cer a. 1449 <br /> Oistan-ffr Pumping Well 0e ) 600 ni.,anrry±•n m."Pin"Well lh:eal 669 <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 at 600 feet away (Rigsbee Well) or at 660 <br /> feet away (Griffin Well) but does produce drawdown in the Proposed Community Well as expected. <br /> Envirotactics, LLC Page 18 of 20 Groundwater Modeling Report <br /> (732) 449-0077 Project No.6704 <br />