The consent decree addresses Aux Sable's liability for Nonattainment New Source Review (NNSR), Leak Detection and Repair (LDAR) and other violations of the CAA at its natural gas processing plant in Morris, Grundy County, Illinois (Morris Facility or Facility).
Aux Sable estimates that it will spend at least $1.5 to $ 2 million in capital cost and $250,000 to $500,000 per year in incremental operation and maintenance cost to complete required injunctive relief at the Morris Facility that will bring its operations into compliance with the CAA and/or mitigate the environmental harm caused by alleged noncompliance at the Morris Facility. In addition to these compliance costs, the Consent Decree also requires Aux Sable to pay a civil penalty of $2,700,000. The Consent Decree also includes requirements to implement mitigation projects to reduce Volatile Organic Compound (VOC) and Nitrogen Oxide (NOx) emissions at locomotive switch-yards located in the same airshed as the Morris Facility (the Chicago Ozone Nonattainment Area). Aux Sable and must spend at least $3,000,000 to complete the mitigation projects.