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Spring Hill water staff flags potential lift‑station need in Shadow Ridge sewer revision
Summary
Spring Hill Water recommended caution on a requested sewer realignment in Shadow Ridge phases 3–5, warning the change could limit future gravity connections and possibly require a lift station; the developer disputed that assessment and the commission asked staff and the applicant to coordinate further.
Spring Hill — Spring Hill Water told the Planning Commission that a proposed site plan modification for Shadow Ridge could cause a future connectivity conflict and increase operational costs for the city if the revised sewer alignment prevents gravity ties for adjacent properties.
Staff briefed commissioners that the applicant proposes removing one sewer connection north of phases 3–4 and adding another connection near phases 7–8; Spring Hill Water’s Ryan Lemunyan said the original alignment would have allowed future gravity connections to adjacent low areas, whereas the proposed relocation could obligate a lift station for future development. “The UDC recommends and calls out the gravity sewer to adjacent properties as the recommended, and lift stations are only allowed in extreme conditions,” Lemunyan said, adding that the city would prefer to avoid lift stations for small subdivisions because of maintenance and long‑term cost.
Representing the applicant, Adam Crunk of Crunk Engineering explained design changes made since the 2018 approval: buildings that once sat below parking were raised to reduce soil waste, which moved the sanitary sewer from the stream side to the parking‑lot side. Crunk said the proposed sewer for phases 7–8 sits at a lower elevation and argued a pump likely would not be required. He summarized the rationale: “So what we did was we took the sewer line that was adjacent to the stream and moved it to the parking lot,” and later disputed the need for a pump, saying the lowest stream point on the site is “25 feet higher than the elevation of the sewer we’re proposing in phase 7 and 8.”
Commissioners characterized the request as largely technical and deferred to staff expertise while urging the applicant and Spring Hill Water to meet and reconcile the differing analyses prior to the voting session. One commissioner recommended additional coordination and expected staff and the applicant to present a unified recommendation at the next meeting.
What’s next: The commission left the item off the consent agenda for additional staff/applicant coordination; staff and the applicant will discuss elevations and connection options and return a recommendation for the voting meeting.
