Consultant from Stantec proposes tie‑in to town's 6‑inch force main for Phase 2 development

Kevin Klein, a civil engineer with Stantec, told the sewer commission the developer's team is exploring tying a new 4‑inch force main into the town's existing 6‑inch force main near the junction manhole and offered preliminary pumping rates and velocities to evaluate flushing.

"I'm Kevin Klein from Stantec. Actually, in our Hyannis office," Klein said when introducing himself and the firm's experience. He told the board the pump could be sized to deliver anywhere from roughly 120 to 220 gallons per minute and that higher pumping rates would improve flushing and reduce reliance on coincident operation of other pump stations.

Board members and Klein discussed where to locate the tie‑in (at the junction manhole or 50 feet downstream), whether valves are present for isolation, and how seasonal flows (for example, from a nearby golf course) affect velocities and sediment buildup. Klein recommended producing a conceptual design and hydraulic calculations so the town's consulting engineer can review the proposal before permitting.

The commission asked staff to provide as‑built drawings or the junction design and to require a deposit for town review time; staff offered an example estimate of $15,000 to cover roughly 60 hours of peer review and inspection time. The commission did not take a final vote; members agreed the developer could proceed with preliminary design subject to town review and verification of available capacity.