Northern Natural Gas

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Design

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At a Glance

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Informational Postings

Date Requested: Jul 23 2008 11:29PM

Critical Notices

Subject	Type	Begin Date	End Date
NO NOMINATION TIMELINE EXTENSIONS UNTIL FURTHER NOTICE	Other	May 27 2008 10:58AM	Until further notice
OPERATIONAL CHANGES - WEST LEG UPDATE 5/2/08	Other	May 2 2008 1:49PM	Until further notice
NOTIFICATION OF ALLOCATED AND CONFIRMED QUANTITIES	Other	Jan 28 2008 2:52PM	Until further notice
CRITICAL BUSINESS SYSTEM UPDATES - TMS UPGRADES BEGINNING 9/6/07	Other	Sep 5 2007 10:59AM	Until further notice
FORCE MAJEURE - ROGER MILLS HEMPHILL SYSTEM	Force Majeure	Nov 4 2005 4:16PM	Until further notice

Status

Northern Daily Highlights

No SOL is in effect

SOL History

No SUL is in effect

SUL History

No Critical Day is in effect

CD History

Weekend On-call

			Weekend On Call Schedule 07-26-08 thru 07-27-08

Temp. Forecast

Normal system weighted temperature: 73°

07/23/2008	07/24/2008
72	73
07/25/2008	07/26/2008
75	73

Allocations by Cycle

Gas Day:	Cycle:	Type:

Location	Cycle	Posted	Begin Date	End Date
PEPL/NNG MULLINVILLE	Evening	Non-Critical	Jul 24 2008 9:00AM	Jul 25 2008 8:59AM
OAKLAND NOMINATION GROUP	Evening	Non-Critical	Jul 24 2008 9:00AM	Jul 25 2008 8:59AM
CIG GARDEN CITY INTERCONNECT	Evening	Non-Critical	Jul 24 2008 9:00AM	Jul 25 2008 8:59AM
BELLEVILLE NOMINATION ZONE D	Evening	Non-Critical	Jul 24 2008 9:00AM	Jul 25 2008 8:59AM

Service Outage

Location	Posted	Begin Date	End Date
MATAGORDA OFFSHORE PIPELINE SYSTEM	Non-Critical	Jan 18 2008 3:14PM	Dec 31 2008 4:00PM
SUNRAY LOW	Non-Critical	Jun 18 2008 9:00AM	Aug 1 2008 8:59AM
BERRYMAN/BLAU CENTRAL DELIVERY	Planned Service Outage	Jul 2 2008 9:00AM	Aug 1 2008 8:59AM
OAKLAND ALLOCATION GROUP	Planned Service Outage	Jul 29 2008 9:00AM	Aug 1 2008 8:59AM
VIKING/NNG PIERZ INTER	Planned Service Outage	Jul 29 2008 9:00AM	Aug 1 2008 8:59AM
CONNECT/NNG B LINE	Planned Service Outage	Jul 31 2008 9:00AM	Aug 18 2008 8:59AM
PLAINVIEW	Planned Service Outage	Aug 1 2008 8:00AM	Aug 4 2008 8:59AM
REVISION 2 - PALMYRA NORTH & OAKLAND NOMINATION GROUPS AND NNG/TBPL I/C	Planned Service Outage	Aug 2 2008 9:00AM	Aug 3 2008 8:59AM
WATERLOO EAST ALLOCATION GROUP	Planned Service Outage	Aug 6 2008 9:00AM	Aug 8 2008 8:59AM
REVISION 1 - PALMYRA NORTH NOMINATION GROUP	Planned Service Outage	Aug 9 2008 9:00AM	Aug 11 2008 8:59AM
OAKLAND ALLOCATION GROUP	Planned Service Outage	Aug 11 2008 9:00AM	Aug 15 2008 8:59AM
SPEARMAN CARGRAY SYSTEM	Planned Service Outage	Aug 11 2008 9:00AM	Aug 13 2008 8:59AM
WTG SUBLETTE INLET	Planned Service Outage	Aug 12 2008 8:00AM	Aug 15 2008 8:59AM
BEAVER ESD & ELECTRICAL TESTING	Planned Service Outage	Aug 12 2008 9:00AM	Aug 13 2008 8:59AM
MULLINVILLE A-LINE WET SYSTEM	Planned Service Outage	Aug 13 2008 9:00AM	Aug 14 2008 8:59AM
OAKLAND NOMINATION GROUP	Planned Service Outage	Aug 16 2008 9:00AM	Aug 17 2008 8:59AM
OAKLAND ALLOCATION GROUP	Planned Service Outage	Aug 19 2008 9:00AM	Aug 22 2008 8:59AM
MATAGORDA OFFSHORE PIPELINE SYSTEM	Planned Service Outage	Aug 21 2008 8:00AM	Aug 24 2008 8:59AM
PALMYRA NORTH & OAKLAND NOMINATION GROUPS	Planned Service Outage	Aug 23 2008 9:00AM	Aug 24 2008 8:59AM
PLAINVIEW ALLOCATION GROUP	Planned Service Outage	Aug 25 2008 9:00AM	Nov 7 2008 8:59AM
OAKLAND NOMINATION GROUP	Planned Service Outage	Aug 27 2008 9:00AM	Aug 29 2008 8:59AM
ST CLOUD BRANCHLINE	Planned Service Outage	Sep 3 2008 8:00AM	Sep 6 2008 8:59AM

Disclaimer
The information contained in 'at-a-glance' is intended to provide general information only, and can change at any time, without notice. All requests for transportation services are subject to the nomination and confirmation procedures set forth in Northern's FERC Gas Tariff. Readers should not exclusively rely on this information, but rather should contact their NNG Gas Marketing Representative for further information.

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