33 C.F.R. § 157.166 Hydrocarbon emissions.
Title 33 - Navigation and Navigable Waters
If the tank vessel having a COW system under §157.10a(a)(2) or §157.10c(b)(2) transfers cargo at a port in the United States that is in an area designated in 40 CFR Part 81 as an area that does not meet the national primary ambient air quality ozone standard under 40 CFR Part 50, issued under the Clean Air Act, as amended (42 U.S.C. 1857), the master of the vessel shall ensure that when cargo tanks are ballasted in that port the hydrocarbon vapors in each tank are contained by a means under §157.132. Note: Questions relating to whether or not a particular port is located in an area designated in 40 CFR Part 81 as an area that does not meet the national primary ambient air quality standard under 40 CFR Part 50 should be directed to the Plans Analysis Section of the Environmental Protection Agency at (919) 541–5665. [CGD 82–28, 50 FR 11628, Mar. 22, 1985]
Title 33: Navigation and Navigable Waters
PART 157—RULES FOR THE PROTECTION OF THE MARINE ENVIRONMENT RELATING TO TANK VESSELS CARRYING OIL IN BULK
Subpart D—Crude Oil Washing (COW) System on Tank Vessels
COW Operations
§ 157.166 Hydrocarbon emissions.
