Laserfiche WebLink
f !i� <br /> The well specifications are: <br /> VEWs ASWs <br /> Total Depth 14 in (46 ft) 28.4 in (93 ft) <br /> Screen Interval 4.6 to 14 m (15 to 46 ft) !1_ 26.8 to 28.4m (88 to 93 ft) <br /> Casing Diameter 4-inch Schedule 40 PVC !� �� 2-inch Schedule 40 PVC <br /> Screen Slot Size 0.040-inch 0.020-inch <br /> Sand Pack very coarse sand medium sand <br /> Wells will be constructed inside the hollow stem augers. Sand pack will beemplaced from the <br /> base to 2-ft above the screen zone. A 2-foot bentonite seal will bef installed above the sand pack. <br /> The well's annulus space will then be filled to the surface with a cement grout. t <br /> s <br /> Followingwell installation, a California licensed contractor: install the piping to the wells. I <br /> 1 <br /> Concurrently, the SVE treatment systems and the air spargi 1.g co pressor will be installed <br /> behind the warehouse (Figure 7) and enclosed with chain-link fencing to limit unauthorized i <br /> Laccess. Wellheads will be finished with flush-mounted, traffic-rated enclosures pressure or <br /> 11 vacuum gauge, flow meter and isolation and throttling valve will be installed with the treatment <br /> equipment, due to traffic concerns and site constraints. All trenching, wellhead enclosures and <br /> paving replacement in will meet Caltrans standards. <br /> p p g <br /> The SVE piping will consist of 4-inch Schedule 40 polyvinyl chloride (PVC) below ground and <br /> it y <br /> Schedule 80 PVC above ground. Piping to the air sparge wells will be galvanized steel or <br /> acrylonitrile-butodiene-styrene plastic suitable for compressed air:66service. Soils generated <br /> during construction will be used as backfill, if suitable, or contained on-site in roll-off soil bins <br /> or Department of Transportation 17H drums and will be properly disposed. <br /> 4.4 Schedule '� <br /> I <br /> After approval is received from the agencies, the following is an outline of a proposed schedule: � <br /> f • Produce detail design—six weeks <br /> • Permitting--six weeks <br /> • Procurement and mobilization—eight weeks I, <br /> Installation of system—four weeks <br /> .r <br /> 0 System start up—one weekIc- <br /> �{y <br /> I� <br /> SacOPN.t�acva�aoz�Ana �aazasaa�.a� 4-3 3 F <br /> (0102M) i <br /> d <br />