Market Participants:

Please assure that this Notification is forwarded to your respective
Operating Departments ---

Notification of Operating Procedure Update

*	The following new or revised ISO Operating Procedures have been
implemented and are posted for reference on the ISO Website.

ISO Operating Procedure posted:  M-426 Ancillary Service Availability
Validation
Version: 1.1
Effective Date: 1/8/02
Procedure Purpose: This procedure ensures Ancillary Services are not
procured from resources that are out-of-service due to planned Outage or
Forced Outage.
Summary of changes: Modified procedure to reflect automatic update for
outage Scheduler.

*	Please find them at
http://www1.caiso.com/thegrid/operations/opsdoc/index.html under the
appropriate Operating Procedure section heading.

Please e-mail any comments or questions to the 'Procedure Control Desk'
mailbox [mailto:procctrldesk@caiso.com] and we will respond as soon as
possible.

Thank you!

California ISO Procedure Control Desk



Client Relations Communications.0921
CRCommunications@caiso.com