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Green Isle council orders improvement hearing for Church Street, Gloria Lane storm‑sewer plan
Summary
The council received a feasibility report for Church Street and Gloria Lane storm‑sewer and street reconstruction, accepted ISG’s estimate just under $4.6 million, and voted to call an improvement hearing under Minnesota Statute chapter 429 to present preliminary assessments to property owners.
The Green Isle City Council voted Dec. 9 to receive a feasibility report and call an improvement hearing for a proposed storm‑sewer and street reconstruction project that covers Church Street, Gloria Lane and part of North Lane.
The consultant told the council the project would replace roughly 4,750 feet of storm sewer and reconstruct about 5,400 feet of roadway, serving three drainage subareas and about 67.1 acres. ISG’s preliminary cost estimate, including design, contingencies and soft costs, is just under $4.6 million; a draft special‑assessment roll calculated a preliminary assessed share of about $1.145 million based on a 25% assessment assumption.
“Right now the mains and the outlets are significantly undersized by today’s standards,” the ISG presenter said, noting the existing system is generally sized for less than a one‑year, 24‑hour storm. ISG recommended designing the new storm system to a 10‑year event (roughly 4.22 inches in 24 hours) with pipe sizes potentially from 15 to 48 inches and, in places, splitting outlets to avoid cover constraints.
Why it matters: the work is framed as necessary to reduce repeated drainage problems and bring infrastructure closer to modern design standards. But it is large enough to require bonding and potential special assessments on adjacent properties — an issue the council flagged for careful public outreach and policy work.
Council members pressed the consultant on assessment methodology and next steps. ISG recommended gathering geotechnical borings during design, preparing a final plan and specifications, and presenting preliminary assessment amounts at an improvement hearing. The firm also noted that statutory rules require at least 20% of project cost be assessed if the city uses bond financing; anything lower could force a public election.
Councilmember discussion focused on timing and public notice: staff and ISG said the improvement hearing could be scheduled as early as the Jan. 13 council meeting so property owners receive preliminary assessments and have an opportunity to comment. ISG outlined a conservative schedule with design from January through May, bidding thereafter, and potential construction starting mid‑season with an eye toward substantial completion in October, though the work could be phased depending on contractor availability.
The council approved a resolution (2025‑38) to receive the feasibility report and order the improvement hearing under Minnesota Statute chapter 429. The resolution passed by roll call.
Next steps: staff will publish mailed and newspaper notices for the improvement hearing, pursue design and geotechnical work if the council continues to the design phase, and draft or adopt a formal assessment policy before final assessments are set.
