CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 413—ELECTROPLATING POINT SOURCE CATEGORY > SUBPART E—Coatings Subcategory (§413.50 to §413.54) > 413.51—Specialized definitions.

413.51—Specialized definitions.

For the purpose of this subpart;
(a) The term sq m (“sq ft”) shall mean the area processed expressed in square meters (square feet).
(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.