Northern Natural Gas Company                                             Fourth Revised Sheet No. 203
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Third Revised Sheet No. 203

                                      GENERAL TERMS AND CONDITIONS

              Contract Year.  "Contract Year" shall mean a one year period commencing on
              the November 1 "gas day" and extending twelve months through October 31.

              Cricondentherm Hydrocarbon Dew Point (CHDP) - The term "cricondentherm hydrocarbon
              dew point," or "cricondentherm temperature"  shall mean the highest dew point
              temperature seen on a liquid-vapor curve for gas over a range of pressure, i.e.,
              200-1400 pounds per square inch absolute (psia).

              Cubic Foot.  The term "cubic foot" shall mean the volume of gas which
              occupies one cubic foot when such gas is at a temperature of sixty degrees
              Fahrenheit (60 F), and at a pressure of fourteen and seventy-three
              hundredths pounds per square inch absolute (14.73 psia) and corrected for
              deviation from ideal gas behavior.

              CST.  The term "CST" shall mean Central Standard Time or Central Daylight
              Time, whichever is applicable.

              Commission.  The term "Commission" or "FERC" shall mean the Federal Energy
              Regulatory Commission or any successor federal governmental body or agency
              which is given the authority to regulate, review and/or oversee, in total
              or in part, the activities of interstate natural gas pipeline companies.

              Day.  The term "day" shall mean a period of twenty-four (24)
              consecutive hours, beginning at 12:00 Midnight CST, and ending at 12:00
              Midnight CST, the following twenty-four (24) hour period.

              Dekatherm.  The term "dekatherm" (also spelled decatherm) or "Dth," which is equal
              to 10 therms, shall be the standard unit of measure for energy content.  A
              dekatherm is one million (1,000,000) British thermal units, which is equivalent to
              1 MMBtu.  The Btu is measured on a total heating value (also known as gross
              heating value and higher heating value) basis.  A dekatherm shall be the standard
              unit of quantity.  However, any document containing "MMBtu" as the unit of
              quantity shall be deemed to be "Dth."

              Delivery Point.  The term "Delivery Point" or "Point of Delivery" shall
              mean the point, which may or may not be a physical point, at which
              Northern delivers gas to the Shipper.

              Delivery Point Operator.  The term "Delivery Point Operator" shall include
              any person interconnected to Northern or acting as agent for the
              interconnected party who is authorized to confirm Shipper delivery point
              nominations and ensure, in cooperation with the Shipper and other parties
              in the confirmation path, that physical flows conform to the delivery
              point nominations.  The Delivery Point Operator must have the ability to
              control or cause the control of the physical operation of the facilities
              interconnected to Northern.

              Electronic Transmission.  The term "Electronic Transmission" shall mean a mutually
              agreeable means of data communication whereby data is input by the Shipper
              directly into Northern's internal system applications either by keypunch or by
              means of electronic data file processing.

              Excess Royalty.  The term "Excess Royalty" shall mean any payment for
              royalty in excess of the normal 1/8 royalty, based on a unit price other
              than that actually paid for gas at the time of purchase, or an amount paid
              on a settlement payment.

              Field Area.  The term "Field Area" will mean the geographical area located south
              of the inlet to Northern's Clifton Compressor Station in Clay County, Kansas.

              F/M Demarcation.  The F/M Demarcation is a point of interest (POI) located
              at the inlet to the Clifton Compressor Station, which is the boundary
              between the Market and Field Area.  The F/M Demarcation POI may be used as
              a delivery point in the Market or Field Area or a receipt point in the
              Market Area or Field Area.
Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: May 1, 2007                                                   Effective: November 1, 2007