TRANSCANADA PIPELINES LIMITED

BUSINESS AND SERVICES RESTRUCTURING AND MAINLINE 2012 – 2013 TOLLS APPLICATION

PART B: BACKGROUND

Appendix B1: Maps of the TransCanada Pipeline Systems

SEPTEMBER 1, 2011 A A K Y E E W V I I N R TransGas Centra Gas CentraN Gas Holding Inc. Union Gas Nipigon Union Gas I P E Saskatoon E C SSDA SSDA G MDA WDA WDA NDA N EmpressSuffield E R Liebenthal Centra W Shackleton A RichmondBayhurst MDA Tunis Power L Western T BURSTALL Success S 2 Herbert Northern CABRI NDA 5 Zone HERBERT SteelmanGrand Coulee 9 CARON Zone 13 Welwyn TransCanada Canadian Mainline Mainline Current Map 391 REGINA Power Plant 17 GRENFELL Swift Current 21 MOOSOMIN Moose Welwyn 25 RAPID CITY Calstock NEW 392 Regina HEARST CALSTOCK Gros Cacouna Jaw KLOTZLAKE MATTICE 30 GERALDTON 86 88 KAPUSKASING PORTAGE 84 92 LA PRAIRIE VERMILION BAY JELLICOE80 GazMetro BRUN 34 KENORA 95 WILLISTON Moosomin 52 DRYDEN 77 393 ILE DES CHENES FALCON LAKE 49 Hearst Cochrane Northern BASIN SPRUCE 55 NDA 41 45 IGNACE Kapuskasing Tunis Power Plant Eastern Brandon 43 394 58 NIPIGON Zone MARTIN Kapuskasing 99 Kenora Dryden EAGLEHEAD Iroquois 60 75 Power Plant 102 Zone Monchy UPSALA 69 Nipigon Power Plant Falls GMi 1 Spruce 62 Larslan Nipigon 105 Union Québec City EDA 2 U.S.A. POTTER Saskatchewan 1 Emerson #1 Emerson #2 68 107 EDA NORTHERN 3 TransQuebec & Maritimes Pipeline Zone RAMORE GREAT PLAINS (Viking) (GLGT) SMOOTH ROCK FALLS EDA LACHENAIE 110 MAINE Manitoba ST. VINCENT 2 Union Gas 4 THUNDERBAY SWASTIKA Eastern Trois-Rivières Saskatchewan Watford City LES CEDRES Zone Manitoba Great Lakes Gas Transmission SSMDA 112 St. Genevieve Zone Maritimes and Northeast Pipeline Zone O R STITTSVILLE S U P E R I CORNWALL Montréal 3 L A K E Temiscaming 5 Zone HAILEYBURY North Bay Western 116 DEUX RIVIERES 148 East Hereford 4 1206 CANDIAC802 Sudbury Junction North Bay 147 Augusta MONTANA THIEF RIVER FALLS North North Bay 6 Zone MARTEN RIVER Power Plant 1217Ottawa Bismarck SHEVLIN Bay Philipsburg NORTH PNGTS 5 Sault Ste. Marie Napierville Pipeline 7 DAKOTA MINNESOTA NORTH BAY PEMBROKE 1211 6 Cornwall N 7 10 SUNDRIDGE Gas iagara 119 Waddington Transm DEER RIVER 10A G IROQUOIS1401 Westbrook E Iroquois ission Company Viking Gas Transmission 8 9 O Huntsville 8 Carlton R BROCKVILLE 144 L UnionB G Williston Basin Interstate Pipeline Co. CLOQUET A A I Bracebridge Brockville K Y A BRACEBRIDGE N.H. N 123 KINGSTON POWDER RIVER E 142 M&NE/PNGTS Joint Proposed Crystal Falls St. Vermont IRON RIVER NCDA Lawrence Facilities BREVORT H BELLEVILLE North Gas BASIN WAKEFIELD NAUBINWAY 139 Gas Concord Bison Pipeline GOODMAN U Country Systems 9 Orillia Pipeline Neptun Northern Natural Pipeline 11 Bison Pipeline Deward R CROGHAN WISCONSIN O BARRIE 127 Kingston MOUNTAIN BLUE LAKE CENTRAL CHARLTONN 1 Evere RAPID RIVER Curtis Palmer CRYSTAL FALLS COLD SPRINGS S.CHESTER 15 Hydro Facilities 10 Enbridge 134 136 COBOURG KPUC VT. St. Paul RAPID RIVER BOWMANVILLE Dracut NE G BIG HORN BASIN Empire State Castleton EXCELSIOR Toronto Boston BOYNE FALLS MAPLE 130 Power Plant CDA Toronto A R I O Little Falls MASS. 11 O N T K E MARSHFIELD ANR A AT HENS Pierre Green Bay L N Parkway Union LINCOLN Union WRIGHT WEYAUWEGA A FARWELL 12 Farwell Hamilton Niagara Tennessee Gas G 12 SOUTH I REED CITY ORIENT Kirkwall Chippawa EDA Providence H CDA NEW YORK W.G.WOOLFOLK Niagara Spur Loop Hartford R.I. WYOMING C GOODWELL CNG Transmission WIND RIVER BASIN 13 I 13 National Fuel Gas Millennium

DAKOTA M MICHIGAN CAPAC 1301 209 211 Tennessee Gas Dover CONN. ANR KEWASKUM WINFIELD Sarnia Texas Eastern Casper E BASIN Union Gas 1703 MICH. CONSOLIDATED Algonquin Gas

Pipeline K Sioux Falls GAS CO. MUTTONVILLE Dawn Transmission Brookfield A Grand Rapids

L LINCOLN Tennessee Gas St. Clair KIRKWALL ANCASTEREastern Madison Lansing OTISVILLE E Ellisburg Ventura Milwaukee HAMILTON I EATON RAPIDS R National Fuel Gas Ramapo JANESVILLE E Southwest E Zone New York Kinder Morgan Interstate Gas Transmission LLC K DOUGLASTOWN A IOWA L Leidy N 14 WOODSTOCK Zone PENNSYLVANIA A NEBRASKA E ChicagoBRIDGMAN Southwest NI Source C Columbia Gas O Trenton Wyoming Interstate NGPLSANDWICH LAGRANGE C 15 Joliet Zone CNG Transmission I DEFIANCE Philadelphia Cheyenne 17 Texas Eastern T Harper ST.JOHN Des Moines 16 APPALACHIAN N.J. N 18 JOLIET19 A EnbridgeBASIN SWDA L Omaha NGPL Trailblazer NEW WINDSOR T BIRMINGHAM Union SWDATransmission Dover A Trunkline Gas Company OHIO (Dawn) MD. Lincoln INDIANA PORTLAND Columbia Gas Transmission Annapolis ILLINOIS (Dawn)Columbus DENVER-JULESBURG BASIN ANR Pipeline Williams TransContinental Gas DEL. SULPHUR SPRINGS Southern Star Central Gas Pipelin LINEVILLE Panhandle Eastern Pipe Line Co. Washington D.C. McCook Rockies Express Pipeline MAITLAND Texas Eastern Denver Rockies Express Pipeline REX East Springfield Indianapolis Cove Point Colorado Interstate Gas W. VIRGINIA VIRGINIA REX West Midwestern Gas Tra SHELBYVILLE MAP IS REPRESENTATIVE NOT TO SCALE COLORADO REX KANSAS HAVENSVILLE Can_ML_Sales_Mkt_Tariff_Current.FH10 - Aug 23, 2011 - Willis - TC Mapping

ANR Pipeline Richmond n Natural Pipeline Topeka ILLINOIS Boundary Lake Gordondale

Alberta-BC Empress McNeill

ATCO Pipelines System SMB FT-D Group 1 Points Monchy Alberta System - Current Map sG as

ALBERTA

FOOTHILLS PIPE LINES LTD. Foothills System 2011

FOOTHILLS ALBERTA ZONE 6 SASKATCHEWAN FOOTHILLS ALBERTA ROCKY MOUNTAINZONE 7 BASIN BRITISH McNeill FOOTHILLS COLUMBIA SASKATCHEWAN ZONE 9 FOOTHILLS BRITISH COLUMBIA ZONE 8

Alberta/BC

Monchy 1 Kingsgate Sa

MONTANA WASH. NORTHERN GREATFoothills PLAINS Pipe Lines Ltd. IDAHO Interconnect Point A A K Y E E W V I I N R TransGas Centra Gas CentraN Gas Holding Inc. Union Gas Nipigon Union Gas I P E Saskatoon E C SSDA SSDA G MDA WDA WDA NDA N EmpressSuffield E R Liebenthal SASKATCHEWAN Centra W Shackleton A RichmondBayhurst MDA Tunis Power L Western T BURSTALL Success ONTARIO S 2 Herbert Northern CABRI NDA 5 Zone HERBERT SteelmanGrand Coulee 9 CARON MANITOBA Zone Canadian Mainline 13 Welwyn TransCanada Canadian Mainline 391 REGINA Power Plant Saskatchewan/Manitoba Restructuring Proposal 17 GRENFELL Border SmB Swift Current 21 MOOSOMIN 2011 Moose Welwyn 25 RAPID CITY Calstock NEW 392 Regina HEARST CALSTOCK Gros Cacouna Jaw KLOTZLAKE MATTICE 30 GERALDTON 86 88 KAPUSKASING PORTAGE 84 92 LA PRAIRIE VERMILION BAY JELLICOE80 GazMetro BRUN 34 KENORA 95 WILLISTON Moosomin 52 DRYDEN 77 393 Winnipeg ILE DES CHENES FALCON LAKE 49 Hearst Cochrane BASIN SPRUCE45 55 Kapuskasing Tunis PowerNDA Plant 41 43 IGNACE 394 Brandon 58 NIPIGON MARTIN Kapuskasing 99 GMi Dryden EAGLEHEAD Iroquois Kenora 60 75 Power Plant Monchy CANADA UPSALA 69 Nipigon Power Plant 102 Falls 1 62 TQM Larslan Spruce Union Québec City Nipigon 105 EDA 2 U.S.A. POTTER Saskatchewan 1 Emerson #1 Emerson #2 68 107 EDA NORTHERN 3 Enbridge TransQuebec & Maritimes Pipeline Zone RAMORE GREAT PLAINS (Viking) (GLGT) Thunder Bay SMOOTH ROCK FALLS Union Gas 110 QUEBEC EDA LACHENAIE Manitoba ST. VINCENT 2 MAINE 4 THUNDERBAY SWASTIKA Eastern Trois-Rivières Watford City SSMDA LES CEDRES Zone Great Lakes Gas Transmission 112 St. Genevieve Zone Maritimes and Northeast Pipeline O R STITTSVILLE NORTH S U P E R I CORNWALL Montréal 3 L A K E Temiscaming 5 HAILEYBURY North Bay DAKOTA 116 DEUX RIVIERES 148 East Hereford 4 1206 CANDIAC802 Sudbury JunctionNorth Bay MONTANA North Bay 147 Augusta 6 THIEF RIVER FALLS MARTEN RIVER North 1217Ottawa SHEVLIN Power Plant Philipsburg Bismarck Bay PNGTS 5 Sault Ste. Marie Napierville Pipeline 7 MINNESOTA NORTH BAY PEMBROKE 1211 6 Cornwall N 7 10 SUNDRIDGE Gas iagara 119 Waddington Transm DEER RIVER 10A G IROQUOIS1401 Westbrook E Iroquois ission Northern Border Pipeline Company Viking Gas Transmission 8 9 O Huntsville 8 Carlton R BROCKVILLE 144 L UnionB G Williston Basin Interstate Pipeline Co. CLOQUET A A Bracebridge Brockville GMi Y I A BRACEBRIDGE N.H. K 123 KINGSTON POWDER RIVER E N 142 M&NE/PNGTS Joint Proposed Crystal Falls St. Vermont IRON RIVER NCDA Lawrence Facilities BREVORT H North Gas WAKEFIELD NAUBINWAY BELLEVILLE 139 EDA BASIN Gas Concord Bison Pipeline GOODMAN U Country Systems 9 Orillia Pipeline Neptun Northern Natural Pipeline 11 Bison Pipeline Deward R CROGHAN WISCONSIN O BARRIE 127 Kingston MOUNTAIN BLUE LAKE CENTRAL CHARLTONN 1 Evere RAPID RIVER Curtis Palmer CRYSTAL FALLS COLD SPRINGS S.CHESTER 15 Hydro Facilities 10 Enbridge 134 136 COBOURG KPUC VT. St. Paul RAPID RIVER BOWMANVILLE Dracut NE G BIG HORN BASIN Alliance Pipeline Empire State Castleton EXCELSIOR Toronto Boston BOYNE FALLS MAPLE 130 Power Plant CDA Toronto A R I O Little Falls MASS. 11 MICHIGAN O N T K E MARSHFIELD ANR A AT HENS Pierre Green Bay L N Parkway Union LINCOLN Union WRIGHT WEYAUWEGA A FARWELL 12 Farwell Hamilton Niagara Tennessee Gas G 12 SOUTH I REED CITY ORIENT Kirkwall Chippawa EDA Providence H CDA NEW YORK W.G.WOOLFOLK Niagara Spur Loop Hartford R.I. WYOMING C GOODWELL CNG Transmission WIND RIVER BASIN 13 I 13 National Fuel Gas Millennium

DAKOTA M MICHIGAN CAPAC 1301 209 211 Tennessee Gas Dover CONN. ANR KEWASKUM WINFIELD Sarnia Texas Eastern Casper E BASIN Union Gas 1703 MICH. CONSOLIDATED Algonquin Gas

Pipeline K Sioux Falls GAS CO. MUTTONVILLE Dawn Transmission Brookfield A Grand Rapids

L LINCOLN Tennessee Gas St. Clair KIRKWALL ANCASTER Madison Lansing OTISVILLE E Ellisburg Ventura Milwaukee HAMILTON I EATON RAPIDS Detroit R National Fuel Gas Ramapo JANESVILLE E Southwest E New York Kinder Morgan Interstate Gas Transmission LLC K DOUGLASTOWN A IOWA L Leidy N 14 WOODSTOCK Zone PENNSYLVANIA A NEBRASKA Vector Pipeline E ChicagoBRIDGMAN NI Source C Enbridge SWDA Columbia Gas O Trenton Wyoming Interstate NGPLSANDWICH LAGRANGE C 15 Joliet (Dawn) CNG Transmission I DEFIANCE Philadelphia Cheyenne 17 Texas Eastern T Harper ST.JOHN Des Moines 16 Union SWDA APPALACHIAN N.J. N 18 JOLIET19 A BASIN L Omaha NGPL Trailblazer NEW WINDSOR (Dawn) T BIRMINGHAM Transmission Dover A Trunkline Gas Company OHIO MD. If you would like additional copies of this map or have questions or Lincoln INDIANA PORTLAND Columbia Gas Transmission Annapolis comments regarding customer service with TransCanada, please ILLINOIS Columbus DENVER-JULESBURG BASIN ANR Pipeline Williams TransContinental Gas DEL. contact your customer service representative or use one of the following: SULPHUR SPRINGS Southern Star Central Gas Pipelin LINEVILLE Panhandle Eastern Pipe Line Co. Washington D.C. Call Centre: (403) 920-PIPE (7473) McCook Rockies Express Pipeline MAITLAND Texas Eastern Website: www.transcanada.com/customerexpressDenver Rockies Express Pipeline REX East Springfield Indianapolis Cove Point Colorado Interstate Gas W. VIRGINIA VIRGINIA REX West Midwestern Gas Tra SHELBYVILLE Please note that this map shows a high level representation of the geographic locations of the distributor delivery areas and export points. For specific MAP IS REPRESENTATIVE NOT TO SCALE COLORADO REX details, please refer to TransCanada’s Receipt and Delivery points list that isKANSAS in the mainline tariff or contact your mainlineHAVENSVILLE sales representative. Can_ML_Sales_Mkt_Tariff_restructuring_prop.FH10 - July 27, 2011 - Willis - TC Mapping ANR Pipeline Richmond n Natural Pipeline Topeka ILLINOIS ATCO Pipelines Boundary Lake Alberta System Mainline Foothills Zone 8 Gordondale Foothills Zone 9 FT-D Group 1 Points

Empress Alberta-BC East Kootenay Kingsgate McNeill SMB

Monchy Alberta System - Restructuring Proposal Map