What is the maximum allowable grate opening size?
You must ensure that receiving-pit feed openings, such as truck or railcar receiving-pits, are covered by grates with maximum openings of two and one-half inches (6.35 cm).
[Statutory Authority: RCW
49.17.010,
49.17.040,
49.17.050, and
49.17.060. WSR 17-16-132, § 296-99-055, filed 8/1/17, effective 9/1/17. Statutory Authority: Chapter
49.17 RCW. WSR 97-22-065, § 296-99-055, filed 11/3/97, effective 1/1/98; WSR 88-23-054 (Order 88-25), § 296-99-055, filed 11/14/88.]
