Compost standards and applications.

(1) In order to protect the state’s land and water resources, compost produced, utilized, or disposed of by the composting process at solid waste management facilities in the state must meet criteria established by the department.

(2) The department shall establish and maintain rules addressing standards for the production of compost, including rules establishing:

(a) Requirements necessary to produce hygienically safe compost products for varying applications.

(b) A classification scheme for compost based on the types of waste composted, the maturity of the compost, and the levels of organic and inorganic constituents in the compost. This scheme shall address:

1. Methods for measurement of the compost maturity.

2. Particle sizes.

3. Moisture content.

4. Average levels of organic and inorganic constituents, including heavy metals, for such classes of compost as the department establishes, and the analytical methods to determine those levels.