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Council authorizes design for I‑94 lift station force main replacement after repeated breaks
Summary
After repeated failures of a force main that serves a large portion of Lake Elmo, the City Council on April 1 authorized staff to develop plans and specifications and approved design and geotechnical contracts to replace the I‑94 lift station force main.
After repeated failures of a force main that serves a large portion of Lake Elmo, the City Council on April 1 authorized staff to develop plans and specifications and approved design and geotechnical contracts to replace the I‑94 lift station force main.
City engineering staff said the existing force main has suffered seven breaks since October 2023. Presenters described visible fatigue in an 8‑inch SDR‑26 PVC pipe and said investigations by multiple specialists and the manufacturer suggested material fatigue possibly worsened by the depth and repeated pressure transients. Staff said they have adjusted pump-start sequencing, added automated pressure gauges, and installed relays and delay timers to prevent pumps starting…
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