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Council approves Geosyntech PSA for Canyon Springs slope stabilization after monitoring shows rapid movement
Summary
After years of monitoring, staff reported a five‑foot scarp movement this winter reduced the distance to the water main to about 11 feet; council approved a professional services agreement with Geosyntech to produce 30% design work (≈$117,000) toward slope stabilization and trail repairs, with construction targeted for summer 2027.
Council approved a professional services agreement with Geosyntech to address slope instability below Canyon Springs that threatens the main water transmission line.
Engineer Patrick Fry walked council through historical imagery and monitoring data showing progressive creep toward the water main: “In 2019 the distance was 22 feet; after the December flooding events in 2026 we saw a 5 foot drop — so now we're at 11 feet, and so it's time to start preparing for the slow prepares,” he said. Fry recommended advancing design to a 30% level and then deciding whether to pursue a design‑build approach or 100% design with Geosyntech; the 30% design phase was presented as a $117,000 contract within a total project estimate of approximately $1.548 million.
Council approved the agenda bill to sign the PSA and asked staff to proceed with design work with the aim of beginning construction in summer 2027. Members had earlier stressed that contract terms and the scope of work are attached and referenced in the agenda materials; the contract for this specific PSA was included with the agenda and passed.
What’s next: staff will use the 30% design work to refine construction scope and schedule and will return with procurement or design‑build options as appropriate.
