The Mississippi Department of Environmental Quality proposes to amend Part 280, a regulation governing technical standards and corrective action requirements for owners and operators of USTs. The amendments would address industry codes and recommended practices and operation and maintenance of secondary containment. The changes would also include the addition of appendices providing guidelines on the operation of petroleum UST systems and the evaluation of UST cathodic protection systems. http://www.deq.state.ms.us/newweb/MDEQRegulations.nsf?OpenDatabase.