Northrop Grumman expects to begin work in two weeks on a renovation of the old Naval Station Pascagoula on Singing River Island.

Northrop spokesman Bill Glenn said there are 100 employees now at the old military site. He said Northrop expects to have 360 people working there after the renovation is completed.

The Jackson County Port Authority leases the 437-acre, man-made island from the state.

On Wednesday, the Port Authority awarded a $571,471 contract to Pascagoula-based Fletcher Construction Co. for mechanical and electrical work on four buildings and complete interior renovations of two others — a former dental and medical facility and a large, two-story former administration building.

Hurricane Katrina caused extensive damage to the area in August 2005, and the Navy officially closed the station as part of the Department of Defense’s base realignment and closure plan in November 2006. It sat vacant for more than a year.

The site had about 60 buildings, many of which suffered damage from wind and flooding during the hurricane.

While some buildings remain vacant, other tenants include the U.S. Coast Guard, the FBI and Keesler Federal Credit Union.

According to the Port Authority, Northrop Grumman leases 17 buildings totaling more than 207,000 square feet.