California Department of Resources Recycling and Recovery (CalRecycle) 

Compostable Materials


Below is an alphabetical listing of resources of use to local enforcement agencies (LEA) related to compostables.

Alternative Daily Cover

Air Emissions and Air Districts

Anaerobic Digestion (AD)

Biosolids: Biosolids are the nutrient-rich by-product of wastewater treatment, generated by channeling human waste through treatment plants and collection systems.

Food Scrap Composting: Information and resources to help reduce food waste and save money on disposal costs.

Glossary of Terms: Definitions of commonly used compost-related terms.


Links: A list of links to external web sites related to compostable materials.

  • California Counties: A list of links to California county web sites.
  • Cornell Composting: This website is maintained by the Cornell Waste Management Institute and provides access to a variety of composting educational materials and programs developed at Cornell University.
  • San Francisco Government Composting: Includes links to pages on basic composting, home composting, worm composting, curbside organics collection, collection for businesses, and principles for resource efficient landscape management.
  • State Government links: Links to state government health and environmental agencies web sites.
  • University of Washington Compost Images: A collection of digitized photos of various aspects of composting and compost use.
  • US Composting Council: A trade and professional organization promoting compost.
  • US Environmental Protection Region 9: Region 9 (Pacific Southwest) is the regional office that includes California. This link describes their organics: compost initiatives.  

News Releases: Use the search mechanism at the bottom of this page to find CalRecycle news releases related to compostable materials.


  • Permit Forms: Forms used by LEAs and operators during the solid waste facility permit process.
  • Permitting Resources: Information to assist in obtaining approval to operate a compostable material handling operation or facility.
  • Permit Tier Placement Chart: A matrix summary of facilities and operations for which CalRecycle adopted tiered regulations.

Publications and Videos:

Regulations and Statutes:


  • Compost Training: Information on upcoming training and summaries and notes from past training sessions.
  • State Minimum Standards at Composting Facilities: Several videos of presentations from a training offered by the CIWMB (now CalRecycle) to local enforcement agencies, solid waste facility operators and CIWMB staff during the Summer of 2007.

Water Quality

Compostable Materials Home

Last updated: July 14, 2015
Compostable Materials,
Martin Perez: (916) 323-0834