1. Categorizing Appropriate WECC Documents Page 1 of 2

2. Categorizing Appropriate WECC Documents Page2 of 2

3. WECC Document Categories • Regional Reliability Standards: A WECC Board approved document whose purpose is to establish mandatory rules which must be followed by all entities within the interconnection in order to maintain reliability. • Regional Criteria: A WECC Board approved document whose purpose is to establish consistency among WECC member entities with respect to business practices, technical procedures, documentation procedures and/or administrative procedures. • Policy: A WECC Board approved document whose purpose is to establish the general path, direction and objectives agreed to by the Board, and provide guidance for subsequent Regional Reliability Standards, Regional Criteria, and Guidelines. • Guideline: A WECC Committee approved document whose purpose is to educate, train, and/or promote consistency among members.