Ongoing concerns about density were aired last week during a public hearing on a plan to replace the existing one-story Wave Lengths hair salon building on Upper Main street in Edgartown with a three-story mixed-use residential commercial building, and to build another three-story residential building in the parking lot behind it.

The plan, which originally came before the commission in April, was scaled down after the Edgartown planning board, the fire department and the commission expressed concerns about density. The footprints of both buildings have been reduced; the back building has been shortened by 14 feet and cut down by nearly 1,000 square feet and was moved five feet toward Upper Main street to make room for a turnaround at the back of the parking lot. Edgartown fire chief Peter Shemeth, in a letter delivered to the commission on Thursday, said he is satisfied with the changes, but concerns over tight parking conditions lingered at Thursday’s hearing. Commission transportation planner Michael Mauro said the turnaround remains insufficient for an ambulance to maneuver.

Project architect Chuck Sullivan questioned Mr. Mauro’s assessment.

“I can understand, say, a three-axle truck or an 18-wheeler not being able to turn around,” he said, “but there’s no way an ambulance can’t turn around in that parking lot.” Commission member Linda Sibley suggested the commission investigate the claim.

Members of the Edgartown planning board who attended the hearing contended they would be able to manage the parking and turnaround issues within their own planning body, but one member expressed reservations.

“I personally still have a problem with the parking,” said planning board member Mike McCourt. “The main reason is if someone goes in there and every space is taken and they can’t maneuver they would have to start backing out on Main street. That’s a big issue. Turnaround in back is a big improvement, but I think the parking space is still kind of cramped.”

“This is probably as good as we can do for this site,” said project engineer Doug Hoehn.

The hearing was closed and the proposal will go to the MVC land use planning committee on Nov. 15. Deliberations before the full commission are scheduled for Nov. 18.

In other business, the commission voted 7-2 to approve a 9,600-square-foot storage facility for Big Sky Tents in the West Tisbury light industrial district. During public review, the project drew heated opposition from abutters who claimed it was out of scale with the rural neighborhood.

“I think we did a good job on this,” said commission member Chris Murphy, “as best we could given that it was a difficult situation right from the beginning. And I think the applicant has done a good job of trying to satisfy the concerns of his neighbors.”

Conditions include restricting operating hours from 7 a.m. to 7 p.m. and incorporating architectural elements such as shingling, a cupola, windows, doors and details resembling a barn.

The roll call vote was as follows: Voting in favor were John Breckenridge, Christina Brown, Chris Murphy, James Joyce, Ned Orleans, Doug Sederholm and Brian Smith; voting against were Camille Rose and Leonard Jason.