Laserfiche WebLink
City of Everett 01 11 00 - 6 <br />Port Gardner Storage Facility – Facility Construction Package WO# UP-3525 <br /> <br />01 11 00 - 6 SUMMARY OF WORK <br />Category 2: Sensitive information <br />Category 2: For official use only / disclosure permissible by law. <br />c) Installation of 24 pedestal mounted pressurized water cannons <br />along the top deck of primary storage cells 7 through 15. These <br />water cannons will be connected to the plant water system (item <br />a) and used for wash down of this area following a combined <br />sewer storage event. <br />d) Installation of electrically actuated slide gates for storage cell <br />isolation and flushing water control. <br />3) Electrical <br />a) Routing power for instrumentation and controls and electrically <br />actuated slide gates. <br />4) Instrumentation and Controls <br />a) Installation and integration of the following Area 30 <br />instruments/equipment into the site control system. <br />1. Radar level <br />2. Slide gate actuators <br />b) Integration of vendor supplied instruments and controls for <br />flushing gates into the site control system. <br />c) Fabrication, programming, testing, and installation of custom <br />control panels, including Operator Interface Terminal (OIT) <br />panel. <br />7. Area 35 Stormwater Equalization <br />a. Work within Area 35 includes modifications needed for converting the <br />existing secondary clarifier structure into an equalization basin for <br />temporary storage of untreated stormwater. Flow is routed to the Area <br />35 equalization basin via a 48-inch diameter stormwater pipe that <br />passes through the Area 40 Stormwater Diversion Structure. <br />Conversion of the existing clarifier into an equalization basin includes <br />structural, process mechanical, electrical, and instrumentation and <br />controls related work. <br />1) Structural <br />a) Construction of a walkway around the northern perimeter of the <br />equalization basin. This walkway includes a bridge connecting <br />Areas 30 and 35. <br />b) Installation of an external stairway and platform along the <br />southwestern side of the basin. This stairway and platform will <br />provide access to a water cannon for basin washdown (see <br />process mechanical improvements). <br />c) Selective demolition at the existing clarifier scum box for <br />connection of two 36-inch diameter stormwater conveyance <br />lines. <br />d) Selective demolition of the eastern wall of the scum box/basin <br />wall to create an opening connecting the scum box to the <br />equalization tank.