1305.7.2 Termination location.
MC § 1305.7.2
The location of the normal vent pipe terminations shall comply with the following: 1. Liquid fuel normal vent pipes shall terminate outside of buildings in a nonhazardous location at a point not less than 2 feet (609.6 mm) measured vertically or horizontally from any building opening and not less than 2 feet (609.6 mm) nor more than 12 feet (3657.6 mm) above the fill pipe terminal.
2.If the normal vent pipe terminal is not visible from the fill pipe terminal location, an electronic overfill alarm system or a 1-inch (25.4 mm) tell-tale line shall be connected to the tank and shall parallel the fill pipe and terminate at the fill pipe terminal with an unthreaded end. Such tell-tale lines shall be provided with a check valve set to prevent flow of surface water to the storage tank.
3.Normal vent pipes shall terminate sufficiently above the ground to avoid being obstructed with snow or ice.
4.Normal vent pipes from tanks containing heaters shall be extended to a location where oil vapors discharging from the normal vent will be readily diffused.
