On March 11, 2021, Region 1 filed a Consent Agreement and Final Order (CAFO) to resolve alleged violations of the Clean Air Act (CAA) Section 112(r) General Duty Clause and Risk Management Program by Quick Plug N.A., Inc. at its former South Portland, Maine facility. Issues at the facility were identified during an EPA inspection and included failure to file a risk management plan. EPA also identified concerns regarding the handling and storage of toluene diisocyanate, an extremely hazardous substance, used during the production of growth media for plants.