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pipe. Annular space between Casing pipe and Carrier pipe shall be <br /> grouted. <br /> e) Hydraulically operated and controlled sluice gates shall be placed <br /> on both ends of interconnect to allow for water from either Cell and the <br /> interconnect pipe to be drained completely while the other Cell remains <br /> full. The gate shag be designed for the seating and unseating heads of <br /> the cells on either side of the gate. The gate shall conform toAWWA <br /> C501. The stem, all bolts, and hydraulic lines shall be stainless steel. An <br /> underground hydraulic control vault shall be placed at the top of the <br /> embankment. .A minimum of two (2) conduits shall be provided for <br /> hydraulic lines for each gate. The minimum size of conduits shall be two <br /> (2) inches in diameter and shall be Schedule 80 PVC. <br /> Energy dissipation shall be provided at both ends of the <br /> interconnect Energy dissipation shall be sufficient to handle maximum <br /> possible headwater at inlet with no tailwater at outlet. <br /> g) A removable hinged trashrack shall be provided at both ends of <br /> interconnect The trashrack and all embedded and connection elements <br /> shall be galvanized steel. <br /> h) A drain and inspection manhole shall be placed within the <br /> embankment crest. The manhole shall provide access to the interconnect <br /> pipe. An access tee shall be placed in-line on the interconnect pipe within <br /> the manhole. The tee shall be flanged, capped, and facing up. The <br /> flanged end shall be a minimum size of twenty-four(24) inches in diameter <br /> to allow for inspection of the interconnect. An eight (8) inch diameter PVC <br /> or HDPE drain pipe, valve, and tap shall be located within manhole. For <br /> manholes greater than fifteen (15) feet, alternating platforms shall be <br /> included. <br /> i) Clay plugs shall be installed to prevent water migration through <br /> pipe bedding and Cell embankment. <br /> j) Provide a connection detail at the interconnection between the clay <br /> liner and pipe to manage and control seepage along the conduit. <br /> k) Provide a stilling well for the north cell. The stilling well shall <br /> consist of a 24-inch vertical HDPE pipe located near the <br /> interconnect control vault and shall be connected to an 8-inch or <br /> larger HDPE pipe located at the invert of the interconnect that <br /> extends to the Reservoir near the inlet structure at the north Cell. <br /> The Owner will mount its equipment on the top of the 24-inch pipe <br /> and install a recorder to monitor Reservoir levels. The top of the 24- <br /> ConstrucUon Agreement—Zadel(v.4-24-08) <br /> 13 <br />