The city of Camden is working on a plan that would keep the city from having to dig a trench on Historic Camden Revolutionary War Site property on the west side of Broad Street. Thursday, City Manager Mel Pearson said the city now hopes to install sections of a force main sewer line around Rhame Arena on the east side of Broad Street. That would follow part of a path already planned for a gravity sewer line being installed as part of the same project, he said.