Sketches for the new design for the boathouse, a New England-style structure with a cupola, were unveiled to more than 70 people during a presentation that began at 4 p.m. in the Stonington High School commons. The new boathouse design hasn’t been priced yet but it is expected to be in the $2.4 million range, O’Neill said. The Friends group is fundraising for the boathouse project. According to the presentation, preliminary construction costs for the park are estimated around $3,230,000, with $2,790,000 eligible for remediation grants. That would leave $440,000 for Stonington to cover, and Frost said the town has $435,000 in available town funds and $85,000 in escrow remediation funds.