The California ISO has revised the operating procedure referenced below.
4110A DOE(Department of Energy), NERC (North American Electric Reliability Corporation) and WECC (Western Electricity Coordinating Council) Significant Event Reporting Requirements, version 7.0, effective August 1, 2019
Periodic Review: Removed a section on NERC reporting due to the EOP-004-4 Attachment 1 changes. Removed approvals sections. Added Operationally Affected Parties section and document controlled statement in footer. Minor format and grammar updates.
ISO Operating Procedures - http://www.caiso.com/rules/Pages/OperatingProcedures/Default.aspx