1) RIO TINTO SERVICES, INC.

1) AGGREPLEX AND ITS AFFILIATED ENTITIES

2) AMERICAN CONCRETE PIPE ASSOCIATION OF CALIFORNIA (ACPA-CA)

3) AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS

4) ASSOCIATION OF POSTCONSUMER PLASTIC RECYCLERS (APR)

5) BIODEGRADABLE PRODUCTS INSTITUTE (BPI)

6) CALAVERAS CEMENT COMPANY

7) CALIFORNIA LARGE ENERGY CONSUMERS ASSOCIATION

8) CALIFORNIA MOUNTAIN BIKING COALITION (CAMTB)

9) CALIFORNIA NEVADA CEMENT ASSOCIATION (CNCA)

10) CALIFORNIA OUTDOOR RECREATION PARTNERSHIP, INC. (CORP)

11) CALIFORNIA PARK & RECREATION SOCIETY

12) CALIFORNIA PRECAST CONCRETE ASSOCIATION

13) CALIFORNIA TRAILS FOUNDATION

14) CALPORTLAND COMPANY

15) CEMEX INC.

16) CJ BIOMATERIALS, INC.

17) EVEZ CHARGING FOUNDATIONS

18) HANSON PERMANENTE CEMENT, INC.

19) LOS ANGELES, COUNTY OF

20) MITSUBISHI CEMENT COMPANY (MCC)

21) NATIONAL CEMENT COMPANY OF CALIFORNIA

22) NATUREWORKS LLC

23) NORTH LAKE TAHOE RESORT ASSOCIATION

24) NORTH TAHOE FIRE PROTECTION DISTRICT

25) NORTH TAHOE PUBLIC UTILITY DISTRICT

26) NOVAMONT NORTH AMERICA, INC.

27) PACIFIC STEEL GROUP (PSG)

28) PCI WEST

29) POTENTIAL INDUSTRIES, INC.

30) PRE-CON PRODUCTS

31) PROTECT AMERICAN RIVER CANYONS (PARC)

32) RECYCLING PARTNERSHIP, THE

33) RIO TINTO SERVICES, INC.

34) SAVE MOUNT DIABLO

35) SIERRA BUSINESS COUNCIL

36) SIERRA CONSORTIUM

37) SONOMA COUNTY REGIONAL PARKS

38) SOUTH TAHOE PUBLIC UTILITY DISTRICT

39) TAHOE CITY PUBLIC UTILITY DISTRICT

40) U.S. BORAX INC.

41) UNACEM NORTH AMERICA

42) VLS ENVIRONMENTAL SOLUTIONS

43) WESTERN PLASTICS ASSOCIATION

1) RIO TINTO SERVICES, INC.