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Committee forwards Gray & Osborne design contract for Prosper Road sewer extension to council
Summary
Staff recommended and the Public Works Committee unanimously forwarded a professional services agreement with Gray & Osborne to design the Prosper Road Sewer Extension, backed by a $5.25 million low‑interest loan from the Washington Department of Ecology that will fund design and future construction.
The Tumwater Public Works Committee on June 4 recommended that the City Council place a professional services agreement with Gray & Osborne on the June 16 consent calendar for the Prosper Road Sewer Extension project.
Kyle Zajewski, deputy director for the city’s Water Resources division, told the committee staff solicited statements of qualifications and selected Gray & Osborne as the most qualified firm. "We are seeking a recommendation from the committee to place the contract with Gray & Osborne for design services for the Prosper Road sewer extension on the city's consent calendar for the June 16 meeting," Zajewski said.
Zajewski said the project would extend the existing sewer line and provide sewer availability to about 32 parcels along Prosper Road and Joppa Street. Tasks in the contract include project management, data collection, utility coordination, a predesign report and 30/60/90 percent design submittals. The proposed contract includes a $50,000 management reserve and is structured as a not‑to‑exceed agreement.
Staff told the committee the project has secured a $5,250,000 low‑interest loan from the Washington Department of Ecology; fiscal notes provided to the committee state the loan has a 30‑year term with an effective interest rate of about 2.7 percent and will be funded from the sanitary sewer utility fund. Committee members noted utility debt is tracked separately from the general fund’s debt limit.
Members asked about where the new mains and hookups would run. Zajewski and other staff clarified that some sewer mains already exist in the area but that individual buildings may not be connected; the project will extend sewer along the corridor to allow connections. Zajewski said the design is intended to stay within the available loan budget and that staff will return to council later to request construction management services when project bidding and contracts are ready.
The committee voted unanimously to forward the design agreement to the June 16 council consent calendar with a recommendation to approve and authorize the mayor to sign. The item will next be considered by the full City Council on June 16.
