The California ISO has revised the operating procedure referenced below.
2540 Interchange Schedule Curtailments, version 7.0, effective Oct. 22, 2020.
Periodic Review:
Minor format and grammar updates.
Removed references of 3510A WECC Unscheduled Flow Reduction Guideline (Retired Dec. 20, 2019).
Removed history prior to five-years.
ISO Operating Procedures - http://www.caiso.com/rules/Pages/OperatingProcedures/Default.aspx