192. The water in the diked area of an aboveground tank must be drained by a drainage system such as a sump or channel located at its lowest point having a valve kept closed that allows drainage of water.
The valve control for the drainage system must be accessible at all times.
The water must be channelled into an oil interceptor with a separator before disposal.
Water drained from an aboveground tank must be channelled directly into an oil interceptor with a separator before disposal.