On March 12, 2012, the U.S. Small Business Administration’s Office of Advocacy (Advocacy) submits the following comments on the Environmental Protection Agency’s (EPA) supplemental notice of proposed rulemaking, National Emission Standards for Hazardous Air Pollutant Emissions: Hard and Decorative Chromium Electroplating and Chromium Anodizing Tanks; and Steel Pickling-HCl Process Facilities and Hydrochloric Acid Regeneration Plans. A copy of Advocacy's letter can be found at http://www.sba.gov/advocacy/816/127001