Washington Revised Code Title 90. Water Rights--Environment § 90.48.310. Application of barley straw to waters of the state

(a) The barley straw is applied at a rate of up to two hundred twenty-five pounds per acre of surface water;

(b) Whole bales or tightly packed straw are not used. Straw must be loosely packed in nylon or mesh bags;

(c) Bags of straw are placed where control is desired, such as around docks and swim areas, and around inlets to aid in aeration or mixing;

(d) The bags must be staked or anchored in place;

(e) Straw is placed in early spring, prior to the growth of algae; and

(f) Bags are removed four to six months after placement and must not be left in the water over winter.