Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 11/01/2010, Docket: RP10-1070-001, Status: Effective

14 Revised Sheet No. 263H.1 14 Revised Sheet No. 263H.1

Superseding: 13 Revised Sheet No. 263H.1

SCHEDULE NO. 1A

NORTHERN NATURAL GAS COMPANY

MARKET AREA ENTITLEMENT - 1996

CARLTON VOLUMES SUBJECT TO FLOW OBLIGATIONS

FOR 2010/2011 HEATING SEASON

Market

Area "Sourcer" Total

Adjusted New Carlton Other Carlton

Peak Day Resolution Carlton Flow

Company Entitlement Obligation Obligation Obligation

1/

Madison Gas and Electric Company 56,219 4,487 4,487

Metropolitan Utilities District 179,500 14,328 14,328

MidAmerican Energy Co. 10,000 798 798

MidAmerican Energy Company 390,119 31,139 31,139

Midwest Natural Gas, Inc. 13,839 1,105 1,105

Minnesota Energy Resources Corporation 146,260 11,674 11,674

Minnesota Mining & Manufacturing Co 400 32 32

National Public Gas Agency 900 71 71

Nicor Gas Company 186,058 14,852 14,852

Northern States Power Company-MN 361,740 28,872 2,402 31,274

Northern States Power Company-WI 62,970 5,025 1,585 6,610

Northwest Natural Gas Company 2,675 214 214

Northwestern Corporation 49,283 3,934 3,934

Osage Municipal Utilities 1,500 120 120

Rock County Electric Cooperative Assoc. 2,480 198 198

Rock Rapids Municipal Utilities 900 72 72

Semco Energy Gas Company 45,917 3,666 3,666

Sheehan's Gas Company 1,584 126 126

SourceGas Distribution, LLC 292 23

Asgard Energy LLC 2/ 2

Seminole Energy Services L.L.C. 2/ 2

SourceGas Energy Services Company 2/ 16

Oneok Energy Marketing Company 2/ 3

St. Croix Valley Natural Gas 6,839 546 57 603

Superior Water, Light & Power 12,813 1,023 218 1,241

Terra Nitrogen Corporation 27,000 2,155 2,155

Town of Sabula 368 29 29

U.S. Energy Services 2,650 212 212

U.S. Gypsum 0 0 485 485

United States Steel Corporation 0 0 448 448

Viroqua Gas Company 2,389 191 191

Wisconsin Gas, LLC 109,050 8,704 1,138 9,842

Wisconsin Power and Light Company 67,576 5,395 5,395

Entitlement of Sourcers that left 22,473 995

Northern's System

TOTAL UNITS 3,132,061 246,979 12,123 258,107

1/ Reflects obligation after Appendix B customers' election to source or buyout.

2/ Shipper acquired capacity and sourcing obligation from SourceGas.