On December 10, 2013, the United States Environmental Protection Agency emailed a letter of regulatory compliance regarding the filing of Toxic Chemical Release Inventory Form A or Form R reports under Section 313 of the Emergency Planning and Community Right-to-Know Act. These reports are due July 1 of each year for each listed TRI chemical that exceeds the manufactured, processed or otherwise used threshold. In response to the inquiry, the company provided information indicating that a Form R report should have been filed for nitric acid for calendar year 2012 and for
nitrate compounds for calendar years 2011 and 2010. The final penalty is $4,529.