If the past is any indication, a new cement plant in northern New Hanover County could harm the area’s environment. Cape Fear River Keeper Doug Springer took NewsChannel 3 on a boat ride to the old Roanoke cement plant near Castle Hayne today. The old plant closed more than 20 years ago, but most of the vegetation has still has not grown back. There is also evidence of erosion. Springer said a new plant could cause irreparable damage. "There’s about five hundred acres of wetlands bordering the northeast Cape Fear and Island Creek that is in jeopardy. The intention is to strip mine that area," said Springer. New Hanover County has offered Titan more than $4 million in tax incentives to build. Commission chair Bobby Greer said nobody knows how harmful the new plant will be until the proper studies are done. We tried to reach Titan America, but company representatives did not return our call.