WAC 173-308-060
Biosolids not classified as solid waste. (1) The state of Washington recognizes biosolids as a valuable
commodity.
(2) Biosolids are not solid waste and are not subject to
regulation under solid waste laws.
(3) Sewage sludge or septage that fails to meet standards
for classification as biosolids is a solid waste, and may not
be applied to the land.
(4) Sewage sludge or septage that will be disposed in a
landfill is a solid waste.
[Statutory Authority: Chapters 70.95J and 70.95 RCW. 07-12-010 (Order 06-06), § 173-308-060, filed 5/24/07,
effective 6/24/07. Statutory Authority: RCW 70.95J.020 and 70.95.255. 98-05-101 (Order 97-30), § 173-308-060, filed
2/18/98, effective 3/21/98.]