This ACO addresses alleged violations of the Indiana SIP including failure to operate a flare to ensure 98 percent destruction efficiency, failure to comply with VOC and HAP emission limits, and failure to maintain records. Injunctive relief required by the ACO includes: installing a continuous monitoring system for net heating value to ensure the flare achieves no less than 98 percent destruction efficiency, revisions to existing permit conditions which clarify and simplify calculation methodology and procedures for determining VOC and HAP emissions from the pressurized railcar purging/degassing operation, developing a preventative maintenance plan for the flare, and various record-keeping and reporting requirements.