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Council approves time extension for Jacobs design of Quailwood Well PFAS treatment; no cost increase
Summary
The council approved an amendment extending Jacobs Engineering’s contract time for design and pilot work at Quailwood Well No. 3 for PAS/PFOA treatment without increasing the $1,895,844 contract fee; staff reported pilot testing results and noted anticipated annual media replacement and disposal costs.
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The Prescott Valley Town Council on June 25 approved Amendment No. 1 extending the schedule for Jacobs Engineering Group’s professional services agreement for design of PAS/PFOA treatment at Quailwood Well No. 3 while keeping the contract fee unchanged at $1,895,844.
Staff said the original Jacobs design contract, executed in 2024, covered piloting, permitting, design and grant/loan administration and totaled roughly $1.9 million. Pilot testing completed in February evaluated several media columns and helped staff select ion‑exchange media. Because the town narrowed the construction scope from three wells to a single well, some laboratory testing was eliminated and piloting time was lengthened to improve results; staff described the amendment as a time extension rather than a cost increase.
Councilmembers asked how the spent media from ion‑exchange vessels would be handled. Staff explained used media becomes hazardous waste and must be disposed of at a hazardous‑waste facility; the town plans to include media replacement and disposal in ongoing contract arrangements and estimated annual media replacement disposal costs on the order of $100,000.
Funding context: staff said the town received a WIFA loan (transcript reference) with substantial principal forgiveness and an EPA grant that together reduce the town’s share of construction costs; staff expects to pre‑order long‑lead pressure vessels and advertise construction bids within months. Council approved the amendment unanimously.
Next steps: staff will submit specifications to WHIFA and EPA for approvals, issue a construction bid package in the coming months, and return to council for an amendment to add construction administration services.

