Historic Key Program Dates
This page highlights the key program dates related to the implementation of the Acid Rain Program, Cross-State Air Pollution Rule, and TX SO2 Trading Program for the calendar year.
| Category | Date | Event |
|---|---|---|
| Key Date | January 30, 2024 | End of 4th quarter 2023 emissions reporting period |
| Key Date | November 1, 2023 | Deadline for 2022 CSAPR assurance provisions allowance surrender (if necessary) |
| Key Date | October 30, 2023 | End of 3rd quarter 2023 emissions reporting period |
| Key Date | September 30, 2023 | End of ozone season |
| Key Date | August 1, 2023 | Notice of preliminary 2022 CSAPR assurance provision calculations published in the event of assurance level exceedances |
| Key Date | July 31, 2023 | End of 2nd quarter 2023 emissions reporting period |
| Key Date | July 1, 2023 | Deadline for EPA to record annual allowance allocations for ARP |
| Key Date | June 9, 2023 | EPA runs final 2022 compliance for CSAPR and TX SO2 sources that have not already done so themselves |
| Key Date | June 2, 2023 | Sources can run 2022 CSAPR final compliance (Note: accounts remain frozen until final compliance is run) |
| Key Date | June 1, 2023 | Deadline for CSAPR states with approval State Implementation Plans (SIP) to submit annual allocations |
| Key Date | June 1, 2023 | Deadline to submit specified allowance deductions for 2022 CSAPR and TX SO2 compliance (optional) |
| Key Date | June 1, 2023 | Allowance transfer deadline for 2022 control periods under all CSAPR and TX SO2 programs |
| Key Date | May 1, 2023 | End of 1st quarter 2023 emissions reporting period |
| Key Date | May 1, 2023 | Final CSAPR NUSA allocations published and allowances recorded |
| Key Date | May 1, 2023 | TX SO2 Supplemental pool allocations recorded (if necessary) |
| Key Date | May 1, 2023 | Beginning of ozone season |
| Key Date | Early May 2023 | EPA runs final 2022 compliance for ARP sources that have not already done so themselves |
| Key Date | March 28, 2023 | ARP allowance auction |
| Key Date | March 2, 2023 | Sources can run 2022 ARP final compliance (Note: accounts remain frozen until final compliance is run) |
| Key Date | March 1, 2023 | Preliminary CSAPR New Unit Set-Aside (NUSA) allocations published |
| Key Date | March 1, 2023 | Deadline to submit specified allowance deductions for 2022 ARP compliance (optional) |
| Key Date | March 1, 2023 | Allowance transfer deadline for 2022 ARP compliance period |
| Key Date | January 30, 2023 | End of 2022 4th quarter emissions reporting period |
| Key Date | October 31, 2022 | End of 3rd quarter emissions reporting period |
| Key Date | October 1, 2022 | Final notice of 2021 CSAPR assurance level exceedances published (if necessary) |
| Key Date | August 1, 2022 | Notice of 2021 CSAPR assurance level exceedances published (if necessary) |
| Key Date | August 1, 2022 | End of 2nd quarter emissions reporting period |
| Key Date | July 1, 2022 | Annual allowance allocations for ARP recordation deadline |
| Key Date | June 9, 2022 | CAMD runs final 2021 compliance for CSAPR and TX SO2 sources that have not already done so themselves |
| Key Date | June 2, 2022 | Sources can run 2021 CSAPR final compliance (Note: accounts remain frozen until final compliance is run) |
| Key Date | June 1, 2022 | Deadline for CSAPR states with approval State Implementation Plans (SIP) to submit annual allocations |
| Key Date | June 1, 2022 | Deadline to submit specified allowance deductions for 2021 CSAPR and TX SO2 compliance (optional) |
| Key Date | June 1, 2022 | Allowance transfer deadline for 2021 CSAPR and TX SO2 compliance periods |
| Key Date | Early May 2022 | CAMD runs final 2021 compliance for ARP sources that have not already done so themselves |
| Key Date | May 1, 2022 | TX SO2 Supplemental pool allocations recorded (if necessary) |
| Key Date | May 1, 2022 | Final CSAPR NUSA allocations published and allowances recorded |
| Key Date | April 30, 2022 | End of 1st quarter emissions reporting period |
| Key Date | March 29, 2022 | ARP Allowance Auction |
| Key Date | March 2, 2022 | Sources can run 2021 ARP final compliance (Note: accounts remain frozen until final compliance is run) |
| Key Date | March 1, 2022 | Preliminary CSAPR New Unit Set-Aside (NUSA) allocations published |
| Key Date | March 1, 2022 | Deadline to submit specified allowance deductions for 2021 ARP compliance (optional) |
| Key Date | March 1, 2022 | Allowance transfer deadline for 2021 ARP compliance period |
| Key Date | January 31, 2022 | End of 2021 4th quarter emissions reporting period |