Denmark considers canvas or steel salt-and-sand storage; full site and foundation costs could double vendor quote

Denmark — Select Board and Budget Committee members on Feb. 10 discussed options and costs for a new salt-and-sand storage building intended to replace the town’s temporary facility. Staff presented vendor estimates that separate the building envelope from foundation/site work, and members pressed for full project costing.

According to the presentation, the vendor estimate for a steel-frame canvas building with an included block foundation was about $457,000; the building-only price (no foundation) was roughly $305,500. Staff and members highlighted that foundation costs, grading, concrete floors and any retaining or 8–10‑foot concrete walls were not included in the building-only estimate and could materially increase the sum.

Engineers from Sebago Tech and staff advised the committee that a block foundation can be vulnerable to heaving in local soils and that a permanent concrete foundation and higher walls to contain salt and sand would add to cost. Members discussed worst‑case budgeting scenarios and mentioned that a permanent installation — foundation, site work and higher side walls — could approach substantially higher figures; one member suggested planning numbers, in the worst case, around $600,000 to account for full foundations and site preparation.

Why it matters: the location, foundation type and permanence of the structure affect both upfront capital costs and long‑term maintenance. The town also noted certain grant programs routinely exclude salt‑shed projects, increasing the burden on local funds if grants are unavailable.

What’s next: staff said they will produce site plans that include the full lot so the committee can evaluate specific foundation options and the effect on overall project cost before deciding whether to include the project in the final budget.