Welcome to the California Environmental Reporting System (CERS)
Effective December 28, 2017, CalEPA will be replacing the existing five (5) federal hazard categories available in CERS used for the completion of chemical inventories as part of the annual hazardous materials business plan submittal with twenty-four (24) new federal hazard categories adopted by the United States Environmental Protection Agency (U.S. EPA) as a result of changes to the Occupational Safety and Health Administration (OSHA) Hazard Communication Standard (HCS).
Supporting documentation:
Background (PDF, 3 pp, 599 KB)
Business Guidance (PDF, 3 pp, 967 KB)
| Day | Window (Pacific Time Zones) | Service |
|---|---|---|
| Monday - Sunday | 1:00 a.m. to 3:00 a.m. | Data Maintenance |
| Monday (per month), week will vary from month to month. | 7:00 p.m. to 11:00 p.m. | System Maintenance |
| Friday * | 12:00 p.m. to 1:30 p.m. | Application Releases |
| Friday | 6:00 p.m. to 9:00 p.m. | System Maintenance |
| Saturday thru Sunday | 6:00 p.m. to 1:00 a.m. | Server Maintenance |
For assistance with technical issues accessing CERS, or if errors are received while using CERS, please contact CERS Technical Support at: cers@calepa.ca.gov
