Jul 15, 2004· Comment referring to "Although ammonia may react with sulfuric acid or nitric acid in the air to form ammonium compounds, in and of itself it is a gas and is not a visibility impairing compounds" submitted by William C. Herz, The Fertilizer Institute· EPA-HQ-OAR-2002-0076-0243
Filed on regulations.gov — full text not in the inline record.