ARCHIVED REPORTS_XR0006846 - Laserfiche WebLink

Home Browse Search

' 22 June 2001 AGE-NC Protect No 97-0333 Page 9 of 10 extraction flow between 5 and 7 GPM The process pump, located behind the holding tank (Figure 5), will be controlled by electrode switches placed at various levels in the holding tank An emergency shut-off switch will be located immediately below the top of the holding tank An intermediate pump-on switch will be placed approximately 8-inches below the emergency shut-off switch and activate the process pump Intermediate pump-off switches will be utilized near the bottom of the holding tank to turn the t process pump off Electricity is readily available to the site A dedicated electrical meter will be installed by representatives of P G &E that will connect directly to the pump and treat system ' 43 INSTALLATION OF REMEDIATION SYSTEM PIPING NETWORK ' ' Two-inch diameter, schedule 80 PVC piping (process piping) will be Installed in a single trench approximately 1 Y2-foot bsg deep and 1-foot wide and routed from ground water extraction well lieEW-1 to the ground water treatment system, one-inch diameter, schedule 80 PVC electrical conduit 3 will be installed in the same trench and routed from the well-head at FW-1 to an electrical fuse box An indivcdual sample port with check valve to prevent back-flow cross contamination will be ' installed at the monitoring well process piping riser This port will allwN sampling of EW-1 independently without having to remove the well head assembly Following piping placement, the trench will be backfilled with imported road-base sand,compacted and covered with resurfaced with asphalt A cut view drawing of the process piping layout is included in Figurc 6, a plan vieN% drawing of the piping network is depicted in Figure 2 44 GROUND WATF'R PUMP AND TREAT SYS l EM ' From well hW-1, extracted ground v ater will be routed thiough a 1,000-gallon holding tank, From vvhtcli it will pass through a process pump and a 1-micron sediment bag filter One 1,000-gallon poly tank wall be used to tcn-iporardy store extracted water prior to processing As indicated above:, this ' tank is equipped with various level control switches which serve to control the rate at which oxtracted water is introduced into the treatment vessels, to provide safety shutoff capabilities and to allm� coarser sediment to settle out prior to treatment I he process pump is located directly behind ' the holding tank [lie first tkNo stages 01-trLatilietit media are contained in two 2 000-pound GAC ahsoiption %c,,C'els the final [%v0 stages t)l tieatmenl media are contained in ivw l 500-pound SunSol%c absofplioi, 0 � e�se15 1-hc first (��o ee55els v,)11 be designed io ad,,orh I1H-g, IPH-d, BTFX and clorinatec_, 4diamtd( ioFn,ironjmnldl rn�