Montville — The Montville-based Kobyluck family of rock-processing, trucking and construction companies is expanding into a new location on Route 85 in Montville.

Under the name Double Down LLC, the company will process rock and stone into gravel and other construction materials at a property on Route 85 they purchased last year.

“It’s another branch of what we already do and what we’ve already done for many decades,” said Matt Kobyluck, Kobyluck Bros. president.

The town’s Planning and Zoning Commission granted a special permit on Wednesday to allow Double Down to operate the plant on the site, which abuts the recently opened indoor go-kart racing facility off Route 85.

The facility will serve as a site for crushing rocks to create various gravel and construction products that Kobyluck Bros. will use in their own construction work and sell to individual or business clients.

The company also provides gravel and construction materials to clients such as Mohegan Sun, Foxwoods Resort and Casino, Electric Boat and Pfizer.

Kobyluck said the town’s Inlands and Wetlands Commission already granted a permit for the Montville facility.

The town’s zoning rules allow for material processing in the area, which is zoned for light industrial use, as long as the Planning and Zoning Commission issues a special permit.

Kobyluck Bros. also is in the midst of a seven-year fight to open a similar facility in Waterford, after that town’s Planning and Zoning Commission denied the company a permit on the grounds that the company's proposal did not count as "manufacturing" and was therefore not allowed in the industrial zone.

After a multi-year legal battle over that decision, an appellate court ruled in the company's favor against the Planning and Zoning Commission, and Kobyluck Bros. is now in negotiations with various town boards to move ahead.

A Montville couple has raised concerns about dust, traffic and noise that the Route 85 project could cause, but the new application has not caused any legal troubles so far.

David Miner, who owns several properties across Route 85 from the approved Double Down processing facility, and his wife, Lynne Moss Miner, have opposed the Kobyluck plan in Montville. They said at a recent Planning and Zoning Commission meeting that a previous gravel operation on the site created dust that coated their cars and the inside of their house and occasionally affected their breathing.

Kobyluck assured the commission's members last week that his company has the technology to keep the dust on his site under control, and that he would shut down the facility's operations if he received a complaint.

"We want to ... be a good neighbor," Kobyluck said in an interview Thursday. "We want to be able to coexist and not be a detriment to (the neighbors') lifestyle."

The facility will be allowed to operate only during weekday business hours and will be subject to state environmental regulations as well as rules from the federal Mine Safety and Health Administration.

m.shanahan@theday.com