Greenville Sanitary Authority is preparing to begin a camera inspection of the borough’s sewer lines, a project that’s required by the state Department of Environmental Protection.

It will cost between $120,000 and $200,000 to inspect the 15 miles of sewer lines, David A. Coldren of KLH Engineers Inc., Pittsburgh, the authority’s engineer, told board members Thursday.

KLH received price quotes in that range from three companies interested in the project, but board members can expect more than three bids to be submitted, he said.

Board members authorized KLH to seek bids and they plan to award a contract at their Sept. 19 meeting. The inspection should take one to two months and can begin as soon as possible, Coldren said.

“We can push these guys to start,” he said.

A camera inspection of the entire sewer system is a requirement of DEP’s corrective action plan for the borough, said Dan Wallace, the authority board’s solicitor.

In 2005, DEP determined that Greenville’s sewage treatment plant was treating more sewage than the DEP permit allows. The plan calls for a thorough inventory of the plant and sewage lines to decide what repairs are needed.

The camera inspection will show what lines need repaired or replaced, the cost of which is a whole other issue board members will have to deal with when the time comes, said Henry Mueller, board chairman.

There is money set aside in the authority’s budget for the camera inspection, Mueller said.