- ALESSANDRA FOUNDATION, THE
- AMERICAN CONCRETE PIPE ASSOCIATION (ACPA)
- AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS, THE (ASPCA)
- ASSOCIATION OF PLASTIC RECYCLERS (APR), THE
- BIODEGRADABLE PRODUCTS INSTITUTE (BPI)
- CALIFORNIA LARGE ENERGY CONSUMERS ASSOCIATION (CLECA)
- CALIFORNIA MOUNTAIN BIKING COALITION (CAMTB)
- CALIFORNIA NEVADA CEMENT ASSOCIATION (CNCA)
- CALIFORNIA OUTDOOR RECREATION PARTNERSHIP, INC. (CORP)
- CALIFORNIA PARK & RECREATION SOCIETY (CPRS)
- CALIFORNIA PRECAST CONCRETE ASSOCIATION
- CALIFORNIA TRAILS FOUNDATION
- CALPORTLAND COMPANY
- CEMEX INC.
- EAST BAY REGIONAL PARK DISTRICT
- LEHIGH SOUTHWEST CEMENT COMPANY
- LOS ANGELES, COUNTY OF
- MITSUBISHI CEMENT CORPORATION
- NATIONAL CEMENT COMPANY OF CALIFORNIA
- NATURE WORKS LLC
- NORTH TAHOE COMMUNITY ALLIANCE
- NORTH TAHOE FIRE PROTECTION DISTRICT
- NORTH TAHOE PUBLIC UTILITY DISTRICT
- NOVAMONT NORTH AMERICA, INC.
- PACTIV EVERGREEN INC.
- PCI WEST
- PETRA (PET RESIN ASSOCIATION)
- PLACER, COUNTY OF
- POTENTIAL INDUSTRIES, INC.
- SIERRA BUSINESS COUNCIL
- SONOMA COUNTY REGIONAL PARKS
- SOUTH TAHOE PUBLIC UTILITY DISTRICT
- TAHOE CITY PUBLIC UTILITY DISTRICT
- U.S. BORAX INC.
- WATERSHED CONSERVATION AUTHORITY (WCA)
- WESTERN PLASTICS ASSOCIATION (WPA)