| 1. | American Institute of Architects - Houston |
| 2. | American Institute of Chemical Engineers - South Texas Section |
| 3. | American Lung Association - Houston and Southeast Texas |
| 4. | American Society of Landscape Architects - Houston/Gulf Coast Chapter |
| 5. | Armand Bayou Nature Center, Inc. |
| 6. | Audubon Society — Houston |
| 7. | Bayou Bend Collections and Gardens |
| 8. | Bayou Preservation Association, Inc. |
| 9. | Buffalo Bayou Coalition |
| 10. | Citizens Advocating Responsible Transportation |
| 11. | Citizens’ Environmental Coalition |
| 12. | Citizens League for Environmental Action Now (CLEAN) |
| 13. | Citizens Who Care |
| 14. | City of Houston - Department of Health and Human Services — Environmental Health Division |
| 15. | City of Houston - Housing and Community Development |
| 16. | City of Houston - Parks and Recreation |
| 17. | City of Houston - Planning and Development |
| 18. | City of Houston - Public Works and Engineering |
| 19. | City of Houston - Solid Waste Management |
| 20. | CLEAN (Citizens League for Environmental Action Now) |
| 21. | Clean Water Action |
| 22. | Coastal Conservation Association, Inc. |
| 23. | Common Cause |
| 24. | Earthworks |
| 25. | Endangered Species Media Project |
| 26. | Galveston/Houston Association for Smog Prevention |
| 27. | Greater Houston Preservation Alliance |
| 28. | Houston Arboretum and Nature Center |
| 29. | Houston Area Bicyclist Alliance |
| 30. | Houston Area Road Runners Association, Inc. |
| 31. | Houston Baptist University - Department of Biology |
| 32. | Houston Canoe Club |
| 33. | Houston Corporate Recycling Council |
| 34. | Houston Geological Society |
| 35. | Houston Homeowners Association |
| 36. | Houston Museum of Natural Science |
| 37. | Houston Outdoor Learning Academy |
| 38. | Houston Parks and Recreation Department - Houston Zoological Gardens |
| 39. | Houston/Galveston Area Council |
| 40. | International Center for the Solution of Environmental Problems |
| 41. | Keep Houston Beautiful, Inc. |
| 42. | League of Women Voters - Houston |
| 43. | Metropolitan Transit Authority - Environmental Planning |
| 44. | Mothers For Clean Air |
| 45. | National Association for the Advancement of Colored People |
| 46. | Natural Resources Conservation District |
| 47. | North Harris Community College - Earth Alliance |
| 48. | Outdoor Nature Club, Inc. |
| 49. | Park People, The |
| 50. | Planned Parenthood of Houston and Southeast Texas, Inc. |
| 51. | Rice Design Alliance |
| 52. | Rice University - Civil & Environmental Engineering |
| 53. | Rice University - Ecology and Evolutionary Biology Department |
| 54. | Rice University - Institute of Biosciences and Bioengineering |
| 55. | Rice University - Professional Master's Program in Natural Sciences |
| 56. | Rice University - Weiss School of Natural Sciences |
| 57. | River Oaks Garden Club |
| 58. | Safe Water Foundation of Texas |
| 59. | School Park Program |
| 60. | Sierra Club - Houston Regional Group |
| 61. | South Texas College of Law - Environmental Law |
| 62. | St. Thomas University - Chemistry Department |
| 63. | Texans United |
| 64. | Texas Network for Environmental and Economic Justice, Houston |
| 65. | Texas Rainforest Action Group / Earth Foundation |
| 66. | Texas Senate Health and Human Services Committee |
| 67. | Texas Southern University - Biology Department |
| 68. | Texas Southern University - Chemistry and Environmental Sciences |
| 69. | Texas Southern University - Environmental Technology |
| 70. | Trees for Houston |
| 71. | U.S. Environmental Protection Agency — Houston Branch |
| 72. | United Conservation Alliance |
| 73. | University of Houston, Central Campus - Department of Biochemistry and Biophysical Sciences |
| 74. | University of Houston, Central Campus - Department of Chemical Engineering |
| 75. | University of Houston, Central Campus - Department of Environmental Engineering |
| 76. | University of Houston, Central Campus - Environmental Law Program |
| 77. | University of Houston, Central Campus - Environmental Law Society |
| 78. | University of Houston, Clear Lake - Department of Biological and Applied Health Sciences |
| 79. | University of Houston, Clear Lake - School of Business and Public Administration - Environmental Management Program |
| 80. | University of Houston, Clear Lake - School of Natural and Applied Sciences |
| 81. | University of Houston, Downtown - Department of Science and Technology |
| 82. | University of St. Thomas - Biology Department |
| 83. | University of St. Thomas — Environmental Studies Department |
| 84. | University of Texas - School of Public Health - Environmental Science Department |
| 85. | Urban Harvest Community Gardens and Orchards |
| 86. | Vegetarian Society of Houston |
| 87. | West University Recycling |
| 88. | White Oak Bayou Association |
| 89. | Wildlife Rehab and Education |
| 90. | Zoological Society of Houston, Inc. |
