A settling CAA defendant responsible for violations at one of its refineries in Lemont, Illinois, must pay a $1,955,000 civil penalty; install low nitrogen oxide burners on three heaters; comply with a stringent limit for particulate matter emissions from the fluid catalytic cracking unit; develop and implement operation and maintenance plans to improve operations and prevent violations at the sulfur recovery plant; implement a flare minimization and flare efficiency program; implement an enhanced leak detection and repair program; use carbon canisters to control benzene emissions from purged process fluids and samples; implement a $650,000 fence line monitoring supplemental environmental project and a $350,000 "green lighting" supplemental environmental project at the local school district; and perform a mitigation project for benzene waste at a cost of approximately $1.14 million.