40 CFR 428.50: Applicability; description of the small-sized general molded, extruded, and fabricated rubber plants subcategory.

The following provisions of this subpart are applicable to process waste water discharges resulting from the production of molded, extruded, and fabricated rubber products, foam rubber backing, rubber cement-dipped goods, and retreaded tires by small-sized plants. Specifically excluded from the provisions of this subpart are the discharges resulting from the production of latex-based products, tires and inner tubes, and those discharges from textile plants subject to the provisions of part 410 of this chapter.