The exit terminal of an engine generator exhaust system shall be located as follows:
1. Not less than 15 feet above any forced air inlet or operable window located within 20 feet horizontally on the same or adjacent buildings.
2. Not less than 10 feet from an adjacent building and not less than 8 feet above grade where located adjacent to a public walkway.
3. The exit terminal shall be so arranged that flue gases are not directed to buildings within 20 feet and are directed so as not to jeopardize people.
4. Through-the-wall engine exhaust systems shall not terminate in an area where condensate, vapor, or odor could create a nuisance or hazard.
5. Where necessary, exhaust systems shall be shielded to prevent personnel burns.