267. The portion of the loading and unloading zones of a bulk plant laid out for the parking of a cargo tank during loading or unloading must,(1) in the case of Class 1 or Class 2 petroleum products, have a collection system for collecting those products; the system must consist of a concrete apron, an oil separator and a drain connecting the apron and the separator; or
(2) in the case of Class 3 petroleum products or Class 1, Class 2 or Class 3 petroleum products in bulk plants located north of the 53rd parallel and bulk plants located in a designated location, be liquid-tight and laid out in such manner that a spilled product remains confined.