(1) By July 1, 2005, the department of ecology and the department of agriculture, in consultation with the department of health, shall make available to livestock producers clearly written guidelines for the composting of bovine and equine carcasses for routine animal disposal.

(2) Composters of bovine and equine carcasses are exempt from the metals testing and permit requirements under the solid waste handling rules for compost that is distributed off-site if the following conditions are met:

(a) The carcasses to be composted are not known or suspected to be affected with a prion-protein disease such as bovine spongiform encephalopathy, a spore-forming disease such as anthrax or other diseases designated by the state veterinarian;

(b) The composter follows the written guidelines provided for in subsection (1) of this section;

(c) The composter does not accept for composting animal mortalities from other sources not directly affiliated with the composter's operation;

(d) The composter provides information to the end user that includes the source of the material; the quality of the compost as to its nutrient content, pathogens, and stability; and the restrictions on use of the compost as stated in (f) of this subsection;

(e) The composter reports annually to the department the number of bovines and equines and the amounts of other material composted, including the composter's best estimate of the tonnage or yardage involved; and

(f) The end user applies the compost only to agricultural lands that are not used for the production of root crops except as prescribed in the guidelines and ensures no compost comes into contact with the crops harvested from the lands where the compost is applied.

(3) If a compost production facility does not operate in compliance with the terms and conditions established for an exemption in this section, the facility shall be subject to the permitting requirements for solid waste handling under this chapter.