Annual Self-Assessment
Annual Self-Assessment Reports
During the ongoing transition from old MS4 permits to new MS4 permits with permit-specific annual self-assessment templates, there are multiple annual reporting formats in place. Please determine the format for your MS4’s required Annual Self-Assessment Report based upon your audit status and the table below.
MS4 Audit Status | Required Annual Report Submittal Format |
---|---|
Not yet audited | BIMS SWMPA or narrative report* |
Audited during the annual reporting cycle | One-page letter summarizing audit date and status |
Audited in a past reporting cycle, but no new permit issued yet | BIMS SWMPA or narrative report* |
Received a new MS4 Permit and Annual Self-Assessment Template following the audit (permits issued since 2020) | Annual Self-Assessment sheet provided with the permit |
* The permittee has the option to either submit the Basinwide Information Management System (BIMS) Stormwater Management Program Assessment (SWMPA) to meet all annual reporting requirements [Ref. Part IV.3.b of the permit] or submit a narrative report that meets Part IV.3.a and c of the permit.
Submittal Deadline
Unless the current permit specifies a different deadline and/or reporting cycle, annual self-assessment reports are due by August 31 and shall cover the July 1 -June 30 reporting period.