You must provide grating with openings to match the size of the material being discharged into silos or bunkers. Make sure openings are:
Wash. Admin. Code § 296-806-42044
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. 04-14-028, § 296-806-42044, filed 6/29/04, effective 1/1/05.