SYSTEM UTILIZATION AND RELIABILITY MONTHLY REPORT · 2. IT includes all receipt and delivery Interruptible Services: ITR, FRO, ITD1, ITD2, 3. Utilization data is based on billed monthly

Highlights This Month:

• The commercial integration of ATCO Pipelines (AP) into the Alberta System occurred on October 1, 2011. The throughput data reported for the Alberta system includes ATCO Pipeline System flows as of October 1, 2011. The Summer 2011 seasonal design capabilities were maintained pre- integration levels and applied for the majority of the Summer 2011 season.

The average actual flow for the dominant flow condition in each of the Alberta design areas is compared against the corresponding design capability to obtain a measure of pipeline utilization. Consequently, design capability utilization is measured as Average Actual Flow / Seasonal Design Capability.

FT Receipt Availability over a 3 month average from May 1, 2012 – July 31, 2012 was deemed to be 100% available in all pipe segments.

Border Availability at Empress/McNeill, Gordondale and Alberta/BC, over a 3 month average from May 1, 2012 – July 31, 2012 were all deemed 100% available.

The Firm Transportation service contract utilization table (page 3 of this report) illustrates the FT and TF + IT utilization for receipts and deliveries.

SYSTEM UTILIZATION AND RELIABILITYMONTHLY REPORT

for the month endingJuly , 2012

)( NOVA Gas Transmission Ltd.

Published date:September 10, 2012

2

TABLE OF CONTENTS

If you have any questions on the content of this report, contact Chiu Chow at (403) 920-5313 or via fax at (403) 920-2379.

MONTHLY FEATURES PAGE Firm Transportation Service Contract Utilization ..................................................................... . 3 Design Capability Utilization Ft. McMurray Area – Flow Within………………………………………………………………. 4 Kirby Area – Flow Within……………………………………………………………………….. 5 North of Bens Lake – Flow Within ............................................................................................. .. 6 North & South of Bens Lake – Flow Within…………………………………………………….. 7 Upper Peace River ...................................................................................................................... .. 8 Upper & Central Peace River ..................................................................................................... . 9 Peace River Design ..................................................................................................................... .10 Marten Hills ................................................................................................................................ .11 Upstream James River ................................................................................................................ .12 South & Alderson ....................................................................................................................... .13 Rimbey Nevis – Flow Within ................................................................................................... .14 Eastern Alberta Mainline (James River to Princess) .................................................................. .15 Medicine Hat - Flow Within ....................................................................................................... .16 Eastern Alberta Mainline (Princess to Empress/McNeill) .......................................................... .17 Western Alberta Mainline (AB/BC & AB/Montana Borders) ................................................... .18 Historical Transportation Service Availability (3 Month Average) ........................................ .19 Future Firm Transportation Service Availability....................................................................... .20 How to Use This Report ................................................................................................................ .21 REFERENCES NGTL Design Areas Map ............................................................................................................. 23 NGTL Pipeline Segments Map ..................................................................................................... 24 Definition of Terms ........................................................................................................................ 25

3

FIRM TRANSPORTATION SERVICE1 CONTRACT UTILIZATION3

By NGTL Pipeline Segments

Jul CD Jul CDSegment Contract Utilization (TJ/d) Utilization (MMcf/d) UPRM FT 9% 25.4 86% 88

FT + IT2 11% 92%

LPRM FT 0% 0.0 0% 0FT + IT 0% 0%

PRLL FT 29% 48.1 89% 149FT + IT 29% 96%

NWML FT 0% 0.0 64% 373FT + IT 0% 67%

GRDL FT 9% 4.7 75% 1,213FT + IT 10% 77%

WRSY FT 0% 0.0 77% 25FT + IT 0% 94%

WAEX FT 22% 42.4 69% 388FT + IT 38% 91%

JUDY FT 27% 16.6 93% 71FT + IT 27% 106%

GPML FT 21% 167.6 79% 3,083FT + IT 34% 84%

CENT FT 65% 9.8 90% 849FT + IT 65% 108%

LPOL FT 20% 82.6 95% 551FT + IT 26% 120%

WGAT FT 65% 3,462.5 75% 497FT + IT 66% 81%

ALEG FT 29% 315.3 95% 911FT + IT 40% 118%

SLAT FT 12% 178.3 94% 257FT + IT 12% 108%

MLAT FT 60% 262.1 84% 231FT + IT 65% 95%

BLEG FT 49% 142.6 95% 618FT + IT 49% 107%

EGAT FT 97% 3,686.9 97% 45FT + IT 116% 112%

MRTN FT 13% 28.1 88% 85FT + IT 15% 99%

LIEG FT 81% 803.1 67% 52FT + IT 101% 97%

KIRB FT 81% 781.8 79% 48FT + IT 89% 121%

SMHI FT 49% 12.1 84% 49FT + IT 49% 123%

REDL FT 42% 13.1 91% 51FT + IT 45% 117%

COLD FT 54% 56.8 93% 31FT + IT 100% 120%

EDM FT 34% 1,709.4 81% 82FT + IT 36% 114%

NLAT FT 18% 16.0 94% 183FT + IT 18% 113%

WAIN FT 3% 0.5 83% 12FT + IT 3% 108%

ELAT FT 61% 256.5 85% 168FT + IT 61% 110%

TOTAL SYSTEM FT 69% 12,122.6 83% 10,110FT + IT 78% 95%

*NOTE:

billed volumes divided by applicable receipt or delivery Contract level.

Delivery Receipt

July 2012

1. FT includes all receipt and delivery Firm Transportation Services: FTR, FTRN, 2. IT includes all receipt and delivery Interruptible Services: ITR, FRO, ITD1, ITD2, 3. Utilization data is based on billed monthly volumes. Percent utilization calculated

DESIGN CAPABILITY UTILIZATION FT. McMURRAY AREA – FLOW WITHIN

% Design Capability Utilization Monthly Average Area Deliveries as a Percentage of Design Capability

Average Flow/ Design Capability

Feb

60

Mar

62

Apr

64

May

54

Jun

55

Jul

57

4

Throughput vs. Design CapabilityFt. McMurray Area - Delivery Capability

0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

45,000

50,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

200

400

600

800

1000

1200

1400

1600

MMcf/d

Throughput Capability

41% 58% 58%Ave LF : 61 %

DESIGN CAPABILITY UTILIZATION KIRBY AREA – FLOW WITHIN



Feb

84

Mar

89

Apr

82

May

79

Jun

87

Jul

86

Throughput vs. Design CapabilityKirby Area - Delivery Capability

0

5,000

10,000

15,000

20,000

25,000

30,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

200

400

600

800

1000

MMcf/d


83%Ave LF : 81 %

83% 82%

5

6

DESIGN CAPABILITY UTILIZATION NORTH OF BENS LAKE – FLOW WITHIN



Feb

75

Mar

73

Apr

73

May

63

Jun

63

Jul

64

Throughput vs. Design CapabilityNorth of Bens Lake - Delivery Capability

0

20,000

40,000

60,000

80,000

100,000

120,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

500

1000

1500

2000

2500

3000

3500

4000

MMcf/d


60%73%Ave LF :

68 %66%

7

DESIGN CAPABILITY UTILIZATION NORTH & SOUTH OF BENS LAKE – FLOW WITHIN

% Design Capability Utilization Monthly Average Actual Area Deliveries as a Percentage of Design Capability


Feb

74

Mar

72

Apr

76

May

67

Jun

67

Jul

67

Throughput vs. Design CapabilityNorth and East - Delivery Capability

0

20,000

40,000

60,000

80,000

100,000

120,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

500

1000

1500

2000

2500

3000

3500

4000

MMcf/d


Ave LF : 70 % 61%

72% 69%

8

DESIGN CAPABILITY UTILIZATION UPPER PEACE RIVER

% Design Capability Utilization Monthly Average Actual Flow as a Percentage of Design Capability


Feb

63

Mar

57

Apr

50

May

50

Jun

48

Jul

45

Throughput vs. Design CapabilityUpper Peace River

0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

200

400

600

800

1000

1200

MMcf/d


Ave LF : 67 % 74% 62% 48%

9

DESIGN CAPABILITY UTILIZATION UPPER and CENTRAL PEACE RIVER

% Design Capability Utilization Monthly Average Actual Flow as a Percentage of Capability


Feb

72

Mar

65

Apr

67

May

63

Jun

63

Jul

62

Throughput vs. Design CapabilityUpper and Central Peace River

0

10,000

20,000

30,000

40,000

50,000

60,000

70,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

500

1000

1500

2000

MMcf/d


Ave LF : 59 %

80% 68% 64%

10

DESIGN CAPABILITY UTILIZATION PEACE RIVER DESIGN(Upper, Central and Lower Peace River)



Feb

81

Mar

75

Apr

76

May

73

Jun

71

Jul

72

Throughput vs. Design CapabilityPeace River Design

0

20,000

40,000

60,000

80,000

100,000

120,000

140,000

160,000

180,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

1000

2000

3000

4000

5000

6000

MMcf/d


Ave LF : 80 %

84% 79% 73%

11

DESIGN CAPABILITY UTILIZATION MARTEN HILLS



Feb

32

Mar

31

Apr

30

May

30

Jun

29

Jul

28

Throughput vs. Design CapabilityMarten Hills

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

10,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

50

100

150

200

250

300

350

MMcf/d


Ave LF : 28 % 34% 32% 29%

12

DESIGN CAPABILITY UTILIZATIONUPSTREAM JAMES RIVER (Edson Mainline, Peace River Design and Marten Hills)



Feb

89

Mar

83

Apr

82

May

79

Jun

78

Jul

79

Throughput vs. Design CapabilityUpstream James River

0

50,000

100,000

150,000

200,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

1000

2000

3000

4000

5000

6000

7000

MMcf/d


Ave LF : 89 % 90%

86% 80%

13

DESIGN CAPABILITY UTILIZATION SOUTH and ALDERSON



Feb

40

Mar

42

Apr

44

May

45

Jun

46

Jul

46

Throughput vs. Design CapabilitySouth and Alderson

0

5,000

10,000

15,000

20,000

25,000

30,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

200

400

600

800

1000

MMcf/d


Ave LF : 49 % 61% 41% 45%

14

DESIGN CAPABILITY UTILIZATION RIMBEY-NEVIS – FLOW WITHIN



Feb

67

Mar

56

Apr

59

May

43

Jun

34

Jul

36

Throughput vs. Design CapabilityRimbey Nevis - Delivery Capability

0

5,000

10,000

15,000

20,000

25,000

30,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

200

400

600

800

1000

MMcf/d

Area Deliveries Capability

Ave LF : 72 % 38% 65% 43%

15

DESIGN CAPABILITY UTILIZATION EASTERN ALBERTA MAINLINE (James River to Princess)



Feb

79

Mar

69

Apr

72

May

68

Jun

64

Jul

66

Throughput vs. Design CapabilityEastern Alberta Mainline - James River to Princess

0

50,000

100,000

150,000

200,000

250,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

1000

2000

3000

4000

5000

6000

7000

8000

MMcf/d


Ave LF : 79 % 75% 75% 68%

16

DESIGN CAPABILITY UTILIZATION MEDICINE HAT – FLOW WITHIN

Throughput vs. Design CapabilityMedicine Hat - Delivery Capability

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

10,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

50

100

150

200

250

300

350

MMcf/d

Area Deliveries Capability

Ave LF : 80 % 90% 82% 71%



Feb

87

Mar

82

Apr

80

May

79

Jun

59

Jul

68

17

DESIGN CAPABILITY UTILIZATION EASTERN ALBERTA MAINLINE (Princess to Empress / McNeill)

% Design Capability Utilization Average Actual Flow as a Percentage of Design Capability

Average Flow /

Design Capability

Feb

63

Mar

55

Apr

58

May

56

Jun

55

Jul

55

Throughput vs. Design CapabilityEastern Gate - Empress & McNeill Borders

0

50,000

100,000

150,000

200,000

250,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

1000

2000

3000

4000

5000

6000

7000

8000

MMcf/d


Ave LF : 78 % 65% 60% 56%

% Design Capability Utilization Average Actual Flow as a Percentage of Design Capability

Average Flow /

Design Capability

Feb

78

Mar

73

Apr

65

May

63

Jun

73

Jul

74

18

DESIGN CAPABILITY UTILIZATIONWESTERN ALBERTA MAINLINE (Alberta/B.C. and Alberta/Montana Borders)

Throughput vs. Design CapabilityWestern Gate - Alberta / BC & Alberta / Montana Borders

0

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

90,000

100,000

Nov-10

Dec-10

Jan-11

Feb-11

Mar-11

Apr-11

May-11

Jun-11

Jul-11

Aug-11

Sep-11

Oct-11

Nov-11

Dec-11

Jan-12

Feb-12

Mar-12

Apr-12

May-12

Jun-12

Jul-12

Aug-12

Sep-12

Oct-12

Date

103m3/d

0

500

1000

1500

2000

2500

3000

3500

MMcf/d


Ave LF : 72 % 60% 74% 69%

19

Receipt Area IT-R Service Firm Service Firm Service Causes/Comments (3)

Available Available Restriction

Segment (% of time) (% of time) (% of time) Max Average

Peace River UPRM 1 100 100 0 0 0

PRLL 2 100 100 0 0 0

NWML 3 100 100 0 0 0

GRDL 4 100 100 0 0 0

WAEX 5 100 100 0 0 0

JUDY 24 100 100 0 0 0

WRSY 26 100 100 0 0 0

LPRM 27 100 100 0 0 0

GPML 7 100 100 0 0 0

Central CENT 8 100 100 0 0 0

LPOL 9 100 100 0 0 0

North & East Upstream LIEG 10 100 100 0 0 0

of Bens Lake KIRB 11 100 100 0 0 0

MRTN 6 100 100 0 0 0

SMHI 12 100 100 0 0 0

REDL 13 100 100 0 0 0

COLD 14 100 100 0 0 0

Downstream of NLAT 15 100 100 0 0 0

Bens Lake ELAT 16 100 100 0 0 0

WAIN 23 100 100 0 0 0

Rimbey/Nevis ALEG 17 100 100 0 0 0

Eastern Mainline BLEG 18 100 100 0 0 0

EGAT 19 100 100 0 0 0

MLAT 20 100 100 0 0 0

SLAT 22 100 100 0 0 0

Western Mainline WGAT 21 100 100 0 0 0

HISTORICAL TRANSPORTATION SERVICE AVAILABILITY May 1, 2012 to July 31, 2012 (3 Month Average)

% CD

Restricted(1)

FUTURE FIRM TRANSPORTATION SERVICE AVAILABILITY (MAINLINE RESTRICTIONS)

If your needs for firm transportation service arise after the above dates to “Authorize Firm Transportation Service By”, NGTL will evaluate your new receipt firm transportation service or firm service transfer requests on a date-stamped basis.

Receipt and Delivery Firm Transportation Guidelines

Estimated Firm Transportation Service Availability

Please refer to the following web site for

current FT-R Availability Map:

http://www.transcanada.com/customerexpress/ docs/ab_ftr_availability_map/external_map.pdf

Firm

Transportation Location

Authorize Firm Transportation

Service By

To Ensure Firm Transportation

Service By

Summer construction (generally south of Edmonton)

Winter construction (generally north of Edmonton)

November 2012

November 2012

November 2014

April 2015

Please consult with your Customer Sales Representative to discuss your Firm Transportation Service needs.

20

Please refer to the following web site for

current FT-D Availability Map:

http://www.transcanada.com/customerexpress/ docs/ab_ftd_availabilty_map/mapavailability.p df

HOW TO USE THIS REPORT

21

Overview

This report contains recent historical information on the level of utilization of firm transportation Service Agreements on the NGTL system, relative usage of interruptible service, level of utilization of design pipeline capacity, and the availability of transportation services as an indication of system reliability.

Data is reported either by Pipeline Segment (26 on the system) or Design Area (13 on the system). Maps of both are included in the reference section.

Firm Transportation Service Contract Utilization

The Firm Transportation Service Contract Utilization report shows the percent utilization for each of the 26NGTL pipeline segments and 3 major export delivery points comprising the total system. The utilization data is based on billed monthly volumes. Percent utilization is calculated as firm transportation service and firm transportation service + interruptible service divided by applicable receipt or delivery contract level. Historical Data involving billed volumes lags the current date by approximately two months.

Design Capability Utilization

The load factor/segment flow graphs show actual flow versus design capability values for various NGTL system areas. The graphs also show seasonal (winter/summer) design capability and average load factors for each season. Data used in these reports lags the current date by one month.

Design Flow Capability utilization is a function of several factors that include:

Total market demand for Alberta natural gas.Seasonal changes in market demand for Alberta natural gas.Receipt nominating practices of customers individually and in aggregate to meet that level of demand.Effect of scheduled maintenance on actual flow requirement in a design area at any given time.Design assumptions used in determining required segment flow requirement.

HOW TO USE THIS REPORT - continued

22

Historical Transportation Service Availability

Transportation Service Availability is a system utilization measure that identifies the degree to which firm and interruptible transportation services are available on the NGTL system. It includes the historical frequency of service restriction experienced by the gas transmission network by service type and by pipeline segment.

The data shows the percentage of a given time period that a service type was available for a given section of the system. Service availability less than 100 percent means that some level of transportation service has been restricted for a portion of the time period.

Priority of transportation service on the NGTL system is firm transportation service, and then interruptible (IT). If transportation is restricted within a segment, all service within that segment of a lower priority will be affected.

Service availability is affected by a number of factors including scheduled and unscheduled maintenance, construction or other outages.

As a monthly feature the Historical Transportation Service Availability is shown as a three-month rolling average of transportation availability.

Future Firm Transportation Service Availability

The Future Firm Transportation Service Availability report presents guidelines and timing for all future firm transportation service requests.

23

Calgary

Edmonton

Calgary

Edmonton

NGTL Design Areas

Upper Peace River

Central Peace River

Lower Peace River

Marten Hills

Edson Mainline

Rimbey-Nevis

Eastern Alberta Mainline (James River to Princess)

Western Alberta Mainline

North of Bens Lake

South of Bens Lake

Medicine Hat

South and Alderson

(Last updated Nov 2011)

Calgary

Edmonton

Calgary

Edmonton

NGTL Design Areas

Upper Peace River

Central Peace River

Lower Peace River

Marten Hills

Edson Mainline

Rimbey-Nevis

Eastern Alberta Mainline (James River to Princess)

Western Alberta Mainline

North of Bens Lake

South of Bens Lake

Medicine Hat

South and Alderson


Eastern Alberta Mainline (PrincessTo Empress/ McNeill)

24

NGTL Pipeline Segments

13. REDL14. COLD

15. NLAT

16. ELAT

17. ALEG

18. BLEG

20. MLAT

23. WAIN

24. JUDY

Calgary

Edmonton

Calgary

Edmonton

3. NWML

1. PRML

2. PRLL

4. GRDL

5. WAEX

26. WRSY

7. GPML

8. CENT

9. LPOL

10. LIEG

11. KIRB

12. SMHI

21. WGAT

22. SLAT

6. MRTN

28. EDM


Calgary

Edmonton

Calgary

Edmonton

3. NWML

1. PRML

2. PRLL

4. GRDL

5. WAEX

26. WRSY

7. GPML

8. CENT

9. LPOL

10. LIEG

11. KIRB

12. SMHI

21. WGAT

22. SLAT

6. MRTN

28. EDM


19. EGAT

Design Capability Utilization Actual Flow The amount of gas flowing within or out of our design area. Design Capability The volume of gas that can be transported at various points on the pipeline system considering design assumptions.

AVGLF (Average Load Factor) The ratio between average Actual Flow and Design Capability. It is calculated for every design season (summer/winter) as shown on the graphs.

Intra-Alberta Deliveries The amount of sales gas flowing off the system within an area. Receipt Flow Aggregate of actual receipts within an area and the Actual Flow of the upstream area.

Historical Transportation Service Availability Average % CD Restricted The average percentage of the entire segment receipt contract demand restricted during periods of restriction. Firm Service Available The percentage of time that all requested firm transportation service requests were transported within a segment.

Firm Service Restriction Percentage of time firm service is restricted. IT-2 Service Available The percentage of time that IT-2 service requests were transported.

Max % CD Restricted The maximum percentage to which the entire segment contract demand was restricted.

Other System Load Factor The volume weighted average of the Average Load Factor (AVGLF) of all design areas on the system

DEFINITION OF TERMS

25

Documents

SYSTEM UTILIZATION AND RELIABILITY MONTHLY REPORT · 2. IT includes all receipt and delivery Interruptible Services: ITR, FRO, ITD1, ITD2, 3. Utilization data is based on billed monthly