Title
Resolution to Approve Increased Purchasing Authority for Odor Control Chemical from D3W Industries, Inc. ($130,900.00 to $238,700.00 Annually, Estimated) and Polymer from Solenis LLC, ITB 4714 ($297,000.00 to $ 450,000.00 Annually, Estimated) for Water Resource Recovery Facility Operations
Memorandum
Your approval is requested to increase the purchasing authority for chemicals used by the Water Resource Recovery Facility (WRRF) that were previously approved by City Council.
At the end of the land application season November 2022, staff evaluated whether continued land application was a viable method for solids disposal. This evaluation was deemed necessary due to several factors. Weather has become unreliable, as we have experienced bigger storms during the summer months. The bigger storms have made it extremely difficult during June and July to find suitable land for solids application. The land application contractor struggled to find truck drivers and expressed concerns regarding fuel costs. City staff is concerned with the ever- changing PFAS regulations. The biosolids we generate meet the current PFAS regulations, but these regulations are ever changing and there is a risk that our biosolids may not meet future PFAS regulations for land application. Insurance companies are increasingly less willing to cover the application of biosolids to agricultural or other land. Based on these reasons it was decided to run the centrifuges and dewater the solids into centrifuge cake that goes to the landfill year round. We presented this approach to the City Environmental Commission in February 2023, and they agreed. This process change requires us to use more Planet Breeze (D3W Industries) and Polymer (Solenis LLC). These increased costs are offset by the elimination of the contract for land application and a reduction in pebble lime use.
Due to this operational change we request the following purchasing authority approvals be increased for FY25 and future fisc...
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