{"data":{"id":"us/40-cfr-413.51","jurisdiction":"us","citation":"40 CFR 413.51","heading":"Specialized definitions.","body":"For the purpose of this subpart;\n(a) The term sq m (“sq ft”) shall mean the area processed expressed in square meters (square feet).\n(b) The term operation shall mean any step in the coating process in which a basis material surface is acted upon by a process solution and which is followed by a rinse; plus the related operations of alkaline cleaning, acid pickle, and sealing, when each operation is followed by a rinse.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 413—ELECTROPLATING POINT SOURCE CATEGORY","Subpart E—Coatings Subcategory"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"e9c90748319a2c87d06c60ba60f0bf669dcf0e22256c0b8d7fecae652410c788","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-413.50","next":"us/40-cfr-413.52-413.53"},"notice":"GroundRules: Original legal text. Not legal advice."}