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.,� `��*� y_.`z-; y :. �y � -,• �;� 'ter '�r �:�' �=: 1 a�' �.,(��a3�+`� �� ,�•� ,�.s �. aa =u =tai P� f ii MA i4' - .`+ :._ ssr k• , v s . r a. 4- 1,.l 20 3.4.2 Cone of Depression And Capture Zona After well development, an aquifer test will be conoucted on the pumping well. Water table onitorod using ill be M elevation changes In the recovery well and three adjacent monitoring whlndevics. Upon completion pressure transducers attached to a microprocessor-controlled data colla hydraulic of the aquifer test the data will be downloaded to a personal computer ll al o used ed calculate on a number conductivity and storativity of the water-bearing zone• fiend gauging l$ ent the data. In addition, all the of additional monitoring wails during the aquifer test to supe --• uged before the start of the pump test(static gradient),and before monitoring wefts at the site will 4e ga its completion(24-hour cone of depression induced by pumping the recovery ) tt is considered representative of this As stated in the Section 2.2, a transn:lssivity of 500 gpd! pture zone of the water-bearing zone. Because the groundwater gradient is slight,the downgradient ca well pumping at 10 gpm will be approximately that of the cone of depression. Based on a logarithmic the cone of depression is expected to approximation to the Theis equation (f=reeze and Cherry, 1979)�determinedill be ng tura zone of the ba approximately 13t1 feet in radius. Figaro 10illustrates the expected extentthfet�tpfe liable results of pumping well. The true extent of the capture zone wthe system' the aquifer test under the sustained pump rate proposed for 3.4.3 pump Size aquifer to=t,groundwater extraction will probably be accomplished Contingent on the results of the At i O gpm,this using a 1I2 horsepower QRS Environmental Equipment Water Table Depression Pump. ainst a calculated total dynamic head of 92 feet(Appendix ill)- The pump supplies 990 feet of head ag hich pump system includes an intrinsically safe water sensor ox that houses fusessstarti g capacitor andta of water in the recovery well, The system utilizes a start b when the water level drops surge protector, and a control panel that automatically shuts on the pump be level, The pump and panel are explosion proof for installation in a Class fthis I, Duipment - below the probe 1]rawings of this eq 'p environment.as defined by the tae�alve,nal `re flowrmeter�ands sample ports will be installed in the water line are included in Appendix Il. A gat in the treatment compound area. 3.5 Groundwater Treatment 3.5.1 Air Stripping A schematic drawing of the groundwater treatment system is cted groundwater. T e towern air will stripping tower will be utilized to remove volatile hydrocarbons from the extracted g TvCHNOLOG1•,INC.