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Category 2: For official use only / disclosure permissible by law. <br />EXHIBIT A <br />SCOPE OF SERVICES <br />City of Everett <br />WPCF Gate Replacement and Clarifier Launder Repair <br />Statement of Understanding <br />The City of Everett (City) owns and operates the Water Pollution Control Facility (WPCF). Diversion <br />Structure No. 1 (DS-1) at the WPCF is used to control how much of the influent wastewater is sent to the <br />aeration ponds versus the primary clarifiers, after passing through the headworks. An 8-foot wide by 6-foot <br />high downward opening weir gate is positioned based on level to divert the desired amount of flow to the <br />aeration ponds. Due to the width of the gate, it has two stems, one near each end. A single actuator rotates <br />a shaft that actuates connects to a gearbox at each end to drive the two stems simultaneously. Recently, <br />the gate got out of alignment while being positioned and caused the frame and several anchors to become <br />bent. The City replaced the actuator, shaft, and gear boxes and repaired the gate as best they could, <br />though there is still some leakage around the gate due to the inability to restore the tolerances and grout <br />seal around the frame due to the damage. Additionally, the gate is nearly 20 years old. For these reasons, <br />the City wants to replace the existing gate. The City has purchased a replacement gate that will be <br />provided as owner-furnished equipment. The existing actuator and gearboxes and associated shaft and <br />pedestals are to be reused. The City has asked BHC to prepare project bid documents for installation of the <br />new gate by a contractor. Installation of the new gate will require the following elements of work by the <br />contractor: <br />•Removal and replacement of the existing diamond plate. <br />•Removal and replacement of the associated level sensors. <br />•Removal and replacement of the existing gearboxes and associated shaft and pedestals. The City <br />will remove and replace the existing actuator. <br />•Demolition of abandoned conduit and supports (as required). <br />•Demolition of the existing bracket supports for the gearbox and actuator pedestals. <br />•Demolition of the existing gate and associated grout seal. <br />•Inspection of the existing anchors. <br />•Cutting existing anchors that are bent, scored, corroded, or have significant cracks emanating from <br />the anchor holes. <br />•Drilling and installing new anchors to replace damaged anchors. <br />•Drilling new holes in the gate frame to align with new anchor placement. <br />•Installing the new gate and frame. <br />•Installing the new bracket supports for the gearbox and actuator pedestals. <br />•Grouting around the frame to seal between the gate and existing concrete wall. <br />•Testing operation of the gate and adjusting the gate to prevent leakage. The City will set the limit <br />switches controlling travel of the gate.