ATTACHMENT I
CREATION OF NEW CONGESTION ZONE

7.2.7.1	 Active Zones.  The  Active Zones are as set forth in Appendix I to this ISO Tariff.

ISO TARIFF APPENDIX A
Master Definition Supplement
Active Zone	The Zones so identified in Appendix I to the ISO Tariff.
	
	* * * * *	
Inactive Zone	All Zones which the ISO Governing Board has determined do not have a workably competitive Generation market and as set out in Appendix I to the ISO Tariff.	

ISO TARIFF APPENDIX I
 ISO Congestion Management Zones 
* * * * *
 ISO Congestion Management Zones

1.	Active Zones
	A.	Northern Zone (NP15)
	B.	Central Zone (ZP26)
C.	Southern Zone (SP15)

2.	Inactive Zones
	A.	Humboldt Zone
	B.	San Francisco Zone

Note:	TheISO's initial Congestion Management Zones were described in the Joint Application of the IOUs for Authorization to Convey Operational Control of Designated Jurisdictional Facilities to an ISO filed April 29, 1996, Docket No. EC96-19-000.