American Process Group Inc 7/9/2019

City of Everett 00 7300 - 4 2019 Biosolids Removal UT3705-2 DEWATERING CHEMICALS AND EQUIPMENT 1. Net weight of dewatering agents to be used for this project shall be submitted to the City's Project Manager upon delivery to the work site. Costs for dewatering agents shall be incidental to the unit cost per Dry Ton of biosolids treated. J. COMPATIBILITY WITH AGRICULTURAL USES I 1. City intends to apply the biosolids on farmland specifically selected and permitted for land application of biosolids. Biosolids quality must not be altered to be potentially toxic to plants, or by any means rendered unsuitable for agricultural utilization. 2. City will reject any and all applications for payment for biosolids rendered unsuitable for agricultural utilization. 3. Contractor agrees to dispose of biosolids rendered unsuitable for agricultural utilization at no expense to City. K. CENTRATE RETURN AND EFFECTS ON WASTEWATER TREATMENT 1. Contractor shall return Centrate to the wastewater treatment process stream using the 10-inch centrate return line. This line runs from the biosolids processing pad to the north end of Aeration Cell 1. 2. Contractor shall monitor and minimize any scum mat, foaming or other effects from dewatering chemical side-streams. Scum mats that form at the Recirculation Pump Station or the Aeration Cells in excess of 100 square feet in surface area shall be the responsibility of Contractor to collect and dispose of in dumpster(s) provided by the City for this purpose. Any costs of controlling, adjusting, or remediating , effects of dewatering side-streams shall be incidental to the costs of dredging and dewatering. I L. BIOSOLIDS DREDGING 1. Dredging Equipment a. The Contractor will provide the dredge and all necessary equipment to dredge the biosolids from the aeration ponds. The Contractor will also provide all fuel and other equipment and appurtenances necessary to perform and support the dredging operations. Contractor is responsible to maintain and repair any damage incurred to the dredge during dredging operations. 2. Spills a. Any spillage of polymer, fuel or any debris or materials associated with the Contractor's activities or operations must be reported to the City's Project Manager as soon as possible. b. The Contractor shall clean up any spills immediately per the Contractor's approved Spill Prevention Plan or in a manner approved of by the City's Project Manager. Spill response and cleanup shall be at the Contractor's expense. 3. Dredge Operations 1 I 00 7300 - 4 SPECIAL CONDITIONS