Washington Administrative Code
Title - Northwest Clean Air Agency
500 - REGULATED ACTIVITIES AND PROHIBITIONS
Sec2 580.4 - Gasoline Loading Terminals

580.421 The loading terminal shall employ submerged loading or bottom loading and be equipped with a vapor control system.

580.422 All loading lines and vapor lines shall be equipped with vapor-tight fittings which close automatically upon disconnect. The point of closure shall be on the tank side of any hose or immediate connecting line.

580.423 All vapor return lines shall be connected between the transport tank and the vapor control system such that all displaced volatile organic compounds are vented to the vapor control system.

580.424 The vapor control system shall prevent the emission of at least 90 percent by weight of the volatile organic compounds and shall limit the emission of volatile organic compounds to no more than 10 milligrams per liter of gasoline transferred. Compliance shall be demonstrated biennially by conducting emission testing according to EPA Method 25 or another method approved by the Control Officer. Thirty days advance notification is required.

580.425 The vapor control system shall be equipped with an appropriate alarm system to alert personnel when the system is not in compliance with 580.424. Prior approval by the Control Officer is required.

580.426 All loading arms shall be designed, maintained and operated to prevent overfill, prevent fugitive liquid or vapor leaks, and prevent excess gasoline drainage during disconnect in accordance with the requirements of 580.10.