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06/25/2001 14 46 20946710 AGE STOCKTON PAGE 07 <br /> 22 June 2001 <br /> AGE-NC Project No 97-0333 <br /> Page 9of10 <br /> extraction flow between 5 and 7 GPM <br /> The process pump, located behind the holding tank (Figure 5), will be controlled by electrode <br /> swatches placed at various levels in the holding tank An emergency shut-off switch will be, located <br /> immediately below the top of the holding tank An intermediate pump-on switch will be placed <br /> approximately 8-inches below the emergency shut-off switch and activate the process pump <br /> Intermediate pump-off switches will be utilized near the bottom of the holding tank to turn the <br /> process pump off <br /> Electricity is readily available to the site A dedicated electrical meter will be installed by <br /> - representatives of G & E that will connect directly to the pump and treat system <br /> 4 3 INSTALLATION OF REMEDIATION SYSTEM PIPUG NETWORK <br /> Two-inch diameter, schedule 80 PVC piping (process piping) will be installed in a single trench <br /> approximately 1%-foot bsg deep and 1-foot wide and routed from ground water extraction well <br /> . EW-1 to the grouz d vater­ffe_­atr�ent system, one-inch diameter, schedule 80 PVC electrical conduit <br /> will be installed in the same trench and routed from the well-head at EW-1 to an electrical fuse box <br /> An individual sample port with check valve to prevent back-flow cross contamination will be <br /> installed at the monitoring well process piping user This port will allow sampling of EW-1 <br /> independently without having to remove the well head assembly Following piping placement, the <br /> trench will he backfilled with imported road-base sand, compacted and covered with resurfaced with <br /> asphalt A cut view drawing of the process piping layout is included iu Figure 6, a plan view drawing <br /> of the piping network is depicted in Figure 2 <br /> 4 4 GROUND WATER P"[T'v1P AND TREAT SYSTEM <br /> Frons -,Nell EW-1, extracted ground water tivill be routed through a 1,000-gallon holding tank, from <br /> -which it wall pass through a process pump and a 1-micron sediment bag filter One 1,000-gallon poly <br /> tank will be used to temporarily store extracted water pnor to processing As inchcated above, this <br /> Lank is equipped with various level control switches which serve to control the rate at which <br /> extracted water is introduced into the treatment vessels, to provide safety shutoff capabilities and to <br /> allow coarser sediment to settle out pnor to treat-neut The pi ocess pump is located directly behind <br /> the holding tank <br /> The first Mo stages of treatment media are contained in t%yo 2_000,poLmd GAC absorption-\,ess®ts, <br /> tine fival to o stages Qf treatment media are contained in two 1,500-pound SunSolve absorption <br /> vessels !11L hiss t«o �essels v,, It tie clesigsiefl to fidsojb TPH-g TPII-d., BTEX and rlorinatuci <br /> i <br /> advanced(seo�'�L�ranm.nq� <br />