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City _of Everett 01 1100 5 <br /> ' 2023 Biosolids Removal UT 3752-30 <br /> D. Centrate Return and Effects on Wastewater Treatment <br /> ' 1. Contractor shall return Biosolids centrate to the wastewater treatment <br /> process stream using the 10-inch centrate return line. This line runs from <br /> ' the Biosolids Pad to the north end of Aeration Cell #1. <br /> 2. Contractor is responsible for providing equipment to connect with the <br /> 10-inch centrate return line. <br /> 3. Contractor shall monitor and minimize any scum mat, foaming or other <br /> effects from dewatering chemical side-streams. Scum mats that form at the <br /> Recirculation Pump Station or the Aeration Cells in excess of 100 square <br /> ' feet in surface area shall be the responsibility of Contractor to collect and <br /> dispose of in dumpster(s) provided by the City for this purpose. Any costs <br /> of controlling, adjusting, or remediating effects of dewatering side-streams <br /> shall be incidental to the costs of dredging and dewatering. <br /> 1.8 BIOSOLIDS WEIGHING AND TRANSPORTATION <br /> A. Transportation Equipment <br /> ' 1. The Contractor shall provide all labor, equipment, and appurtenances <br /> necessary to perform and support the loading, transportation, and <br /> placement of the biosolids to the dewatering operations staging area. <br /> 2. Trucks shall be thoroughly cleaned after dumping the material with minimal <br /> solids left in the truck from the previous load. It shall be the Contractor's <br /> responsibility to clean up any biosolids on a daily basis that are deposited <br /> on the Pad between the dewatering staging area, the storage area, and the <br /> ' scale. <br /> B. Safety & Spills <br /> ' 1. Drivers must have current licenses for the vehicles they operate and <br /> suitable for the material hauled. <br /> ' 2. Any spillage of biosolids, fuel, or any debris or materials associated with the <br /> Contractor's activities or operations must be reported to the City's Project <br /> Manager as soon as possible. <br /> ' 3. The Contractor shall clean up any spills immediately per the Contractor's <br /> Spill Prevention Plan in a manner approved of by the City's Project Manager. <br /> Spill response and cleanup shall be at the Contractor's expense. See <br /> Section 01 5000 Temporary and Environmental Controls, 1.10 Spill <br /> Prevention. <br /> 01 1100 - 5 SUMMARY OF WORK <br />