Section 14 of the solid waste regulations provides information on the design, operating, monitoring, closure and post closure requirements for most commercial composting facilities. These regulations don't apply to backyard, agricultural or biosolids composting.

Annual reporting
By March 1 of each year, registered composters must submit an annual form reporting on their results of the previous calendar year.

Map of registered and permitted composters in Colorado

Composting forms and applications
Registration, annual reporting