TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 008084 Notice Type: Other Subject: NNG-PIPELINE GAS QUALITY REQUIREMENTS Critical: N Post Date/Time: 03/29/2002 06:58 AM Notice Status: Initiate For Gas Day(s): 03/28/2002 - 12/30/2999 Notice Effective Date/Time: 03/29/2002 06:56 AM Notice End Date/Time: 12/31/2999 12:00 AM Required Response Indicator Description: 5-No response required Notice Text: Please be advised that, pursuant to Northern Natural Gas Company's tariff, all gas received into Northern's pipeline from Shippers must conform to specific gas quality specifications, including the Heating Value of greater than or equal to 950 Btu/cubic foot. If any gas received by Northern fails at any time to conform to the tariff specification, Northern may, on a basis that is not unduly discriminatory, refuse to receive such gas into its system pending correction by the appropriate party.All of the specifications for gas quality are set forth on Sheet No. 281 of Northern's tariff. Northern encourages you to review your gas stream components and, if necessary, bring your gas up to pipeline specification.