DuPont plans to sell off a huge chunk of its land at its chemical plant in Berkeley County.

The life sciences giant and maker of materials used in bullet-resistant vests and other products will soon market 305 undeveloped acres with deepwater access on the Cooper River, plant manager Jerry Good said.

The wooded acreage sits between DuPont's 400 acres of developed property and South Carolina Electric & Gas Co.'s Williams coal-fired power plant on Bushy Park Road. It's zoned heavy industrial, includes dock accessibility and has access to a CSX rail line.

DuPont officials are in the permitting process for wetlands regulatory approval before listing the site. "It's a ways to go before it's ready to sell," spokeswoman Tara Stewart said. She added that the company it no longer needs the extra land.

"We know we are not going to develop it," she said. "We have so much land, if we are going to expand, we could do it in a different way. If we can't use it, someone can."

A sale would leave DuPont will about 380 acres of developable land, Stewart said.

DuPont bought 2,100 acres at the former Dean Hall rice plantation in 1972. It now employs 182 people at its different operations on the tract. About 800 acres are wetlands. About 100 acres of the site is leased to DAK Americas, which makes resins and polyester staple fibers.

The prime industrial site is not expected to stay on the market long, once it is cleared to be put up for sale as early as next year, Stewart said.

Good added there is no current suitor for the site, but whoever purchases the land will bring new industry and jobs to the Bushy Park industrial area on the Cooper River.

"One of the things I have tried to help champion for our site and also for Berkeley County is bringing in new industry which helps create jobs and helps Berkeley County grow," Good said.

Any new industry on the site would enter the property through the DuPont Way Road entrance off of Bushy Park Road.

DuPont started making Dacron polyester in 1976 at the site, but divested itself of Dacron in 2001 to DAK Americas. Construction on expansion at the site for the $460 million Kevlar plant started in 2009. Production began two years later.

Reach Warren L. Wise at 937-5524 or twitter.com/warrenlancewise.