The California ISO has revised the operating procedure referenced below.

2720 Market Disruption – EIM, version 4.0, effective Jan. 6, 2021

• Periodic Review - Major Update: Updated with items developed in coordination with Energy Imbalance Market (EIM) Entities in the Market Disruption Workshop.
• Major rewrite to entire Section 3: Added detailed Scenarios to each Tier with the actions of the Real-Time Market Operator (RTMO) and options of the EIM Operator. Added Tariff/BPM, Pricing, RTMO/EIM Tools and Communication Types details (Highlighted only Section headings). Updated ISO References to CAISO. Minor format and grammar updates.

ISO Operating Procedures - http://www.caiso.com/rules/Pages/OperatingProcedures/Default.aspx