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06,f 2512001. 14 46 2094671* AGE STOCKTON � PAGE 05 <br /> 22 June 2001 <br /> AGE-NC Project No 97-0333 <br /> Page 7 of 10 <br /> areas will be clearly marked and a utility clearance obtained through Underground Service Alert <br /> 3 2 DEDICATED GROUND WATER PUMP INSTALLATION <br /> Based on the fuel component-impact encountered nen Rainwater Car Wash ground water momtonng <br /> wells and grab water samples collected dunmg the ground water aquifer pumping test, well ESV-1 <br /> appears to be located in the area of highest known ground water MTBE contamination at the site <br /> Therefore, AGE proposes to install a four-inch diameter dedicated Grundfos submersible pump <br /> (model 5E5) inside the six-inch diameter extraction well The Gnmdfos pump will be designed to <br /> operate continuously at a low flow rate ranging between five and sever,gallons per minute(GPM) <br /> - 3 3 DEDICATED PRESSURE TRANSDUCERS <br /> AGE proposes to install dedicated Levelogger pressure transducers (model L) in the six-srich <br /> diameter ground water extraction well and ua selected ground water monitoring wells during the first <br /> month of interim remediation to Monitor the influence of the draw-down at the site Data obtained <br /> from the transducers will be useful for monitoring and maxnnnizing the capture zone of the extraction <br /> well <br /> 3 d GROUND WELTER PUMP A��,-D TREAT SXSTEvI <br /> Utilizing the above referenced Gzumdfos submersible pump, ground water will be extracted from the <br /> sic-inch diameter extraction well, routed through usndergiourid PVC piping to an ori-site 1,000-gallon <br /> above ground storage holy tank �holdimg tank) From the holding tank, ground water will be <br /> processed through a four-stage treatment system The first two stages of the pump and treat system <br /> will utilize two 2,000-pound canisters of granular activated carbon(GAC)to address TPH-g, TPH-d, <br /> BTEX aad claloTanated solvents in extracted ground water, the final two stages will address MTBE <br /> utilizing two 1,500-pound canisters of SunSolve, a patented material that has an affinity to absorb <br /> MTBE A schematic- diagram of the GAC/SunSolve ground water treatment system is depicted in <br /> Figure 5, additional uiformabon is in Appendix B Treated water will be discharged into the city of <br /> Manteca sanitary se o er s)-stern located approximately 10 feet west of the site on Jessie Street AGE <br /> proposes to operate a pump-and-treat mternm remediation system-,vithrn the First Zone Aquifer until <br /> directed otherwise by the PHS-FID or the RWQCB <br /> al,ao eJiLcoEn„tu, tittut­ 0 <br />