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City seeks alternatives analysis for Business Park lift station after hospital expansion would exceed capacity
Summary
Patrick Fry, project engineer with City of Snoqualmie Parks and Public Works, told the council the Business Park lift station has a firm capacity of 750 gallons per minute and that Snoqualmie Valley Health’s planned expansion would add about 49 gpm, exceeding that firm capacity under current estimates.
Patrick Fry, project engineer with City of Snoqualmie Parks and Public Works, told the council that the Business Park (BP) lift station is approaching its firm capacity and that an alternatives analysis is needed because a planned Snoqualmie Valley Health expansion would add flow beyond the station’s firm rating.
"it has a firm capacity of... 750 gallons per minute. As it stands, it's receiving estimated 711 gallons per minute," Fry said. He added that the hospital’s planned additional flow is 49 gallons per minute, which would put the pump station roughly 10 gpm over the firm capacity as estimated in the analysis.
Why it matters: Fry said the BP pump station collects upstream gravity flows from a large portion of town and that exceeding its firm capacity risks higher cycling and potential performance issues. Fry presented monitoring data showing the station’s pumps cycle between about seven and 12…
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