Biosolids Transportation and Management Services

The City of San Diego Public Utilities Department is seeking professional services for the transportation and management of approximately 175,000 wet tons of anaerobically digested, dewatered Class B biosolids generated annually at the Metropolitan Biosolids Center. This effort, conducted under solicitation 30000079-27-V, is currently a Request for Information intended to gather market research to diversify management options and improve long-term resilience. The City is exploring alternatives to its current land application practices in Arizona, including the use of bulk agricultural markets within and outside of California, as well as non-bulk markets such as nurseries, soil blending, fertilizer blending, and alternative fuels. Additionally, the City is interested in alternative processing methods like composting and thermal drying to convert Class B biosolids into Class A or Class A EQ material. Interested bidders must submit electronic signed proposals through the PlanetBids portal by the closing date, adhering to a 150MB file size limit per document. While the current phase is for planning and will not result in an immediate contract award, the City is collecting data on service delivery, coordination, regulatory risks, and the management of subcontractors. All submissions are subject to the California Public Records Act unless specifically marked as confidential or proprietary. Technical considerations for the project include compliance with federal, state, and local regulations, as well as environmental monitoring for PFAS compounds such as PFOA, PFOS, and PFHxS.