Wash. Admin. Code § 296-99-055 - 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).
Notes
Statutory Authority: Chapter 49.17 RCW. 97-22-065, § 296-99-055, filed 11/3/97, effective 1/1/98; 88-23-054 (Order 88-25), § 296-99-055, filed 11/14/88.
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