Emergency Rulemaking to Prohibit the Fabrication of Engineered Stone Countertops Containing More than One Percent Crystalline SilicaWritten Comments Received as of September 30, 2026

Title 8 Industrial Relations
General Industry Safety Orders
Section 5204 Occupational Exposures to Respirable Crystalline Silica.

  1. Napa County Board of Supervisors
  2. Anita Cecil, Hawk Nest Tunnel Disaster descendant
  3. Brayton Purcell, LLP
  4. Environmental Health & Engineering
  5. Measure Stoneworks
  6. Fox Marble & Fireclay Tile, Inc.
  7. United Steelworkers, Local 675
  8. Debbie Berkowitz
  9. Beacon Hill Medical Consulting, LLC
  10. Tops Countertops
  11. American Thoracic Society, California Thoracic Society Chapter
  12. University of California, San Francisco Division of Occupational, Environmental, and Climate Medicine
  13. Tile Council of North America
  14. Natural Stone Institute
  15. State of Wisconsin, Department of Health Services
  16. University of Illinois Chicago, School of Public Health, Environmental and Occupational Health
  17. International Surface Fabricators Association
  18. California Industrial Hygiene Council
  19. Block Tops Countertop Surfaces
  20. Oliver Jakubiec
  21. GMD Surfaces
  22. Contra Costa County, Contra Costa Health, Community Health and Safety Branch
  23. Occupational Knowledge International
  24. University of California, San Francisco, Division of Pulmonary and Critical Care Medicine
  25. Metzger Law Group
  26. Public Citizen, Health Research Group
  27. California Building Industry Association
  28. University of California, Berkeley, Labor Occupational Health Program
  29. Western Occupational and Environmental Medical Association
  30. Health Officers Association of California
  31. Dr. Dennis Paustenbach, Dr. Aryatara Shakya, Mr. Michael Stevens, Et al.
  32. BlueGreen Alliance, Occupational and Environmental Health
  33. California Immigrant Policy Center
  34. Worksafe
  35. Caesarstone USA, Inc.
  36. California Department of Public Health, Occupational Health Branch
  37. California Medical Association
  38. Instituto de Educacion Popular del Sur de California
  39. California Surfaces
  40. Bay Area Air District
  41. LX Hausys America, Inc.
  42. Bricklayers and Allied Craftworkers Locals 3 and 4 of California
  43. State Fund Industrial Hygiene Team
  44. State Building and Construction Trades Council of California

October 2026