November 29, Federal Energy Regulatory Commission 888 First Street, N.E. Washington, D.C Attention: Ms. Kimberly D.

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1 November 29, 2018 Federal Energy Regulatory Commission 888 First Street, N.E. Washington, D.C Attention: Ms. Kimberly D. Bose, Secretary Commissioners: Re: Annual Recomputation of Fuel and Lost and Unaccounted-for Reimbursement Percentages, Including the Operational Purchases and Sales Report; El Paso Natural Gas Company, L.L.C.; Docket No. RP19- El Paso Natural Gas Company, L.L.C. ("EPNG") tenders for filing and acceptance by the Federal Energy Regulatory Commission ("Commission"), Version of Part II, Statement of Rates, Section 3 Fuel and L&U Rates of the Third Revised Volume No. 1A Tariff of its FERC Gas Tariff ( Tariff ). This tariff record revises the Fuel and Lost and Unaccounted-For ( L&U ) reimbursement percentages applicable to transportation service on EPNG s system and is proposed to become effective on January 1, Background Section 13 of the General Terms and Conditions ( GT&C ) of EPNG s Tariff provides that EPNG will annually restate its Fuel and L&U percentages to be effective January 1 st of each year. Pursuant to the Tariff and Subpart C of Part 154 of the Commission's Regulations, EPNG is hereby filing to revise its Fuel and L&U reimbursement percentages to become effective January 1, The filing uses a twelve-month data collection period ending September 30, 2018 and includes true-up computations as specified by the Tariff. Description of Filing The development of the Fuel and L&U reimbursement percentages involves two computations, in accordance with EPNG s Tariff provisions. First, the current period

2 Federal Energy Regulatory Commission 2 November 29, 2018 Fuel and L&U reimbursement percentages 1 are calculated based on Fuel consumption and L&U experienced during the twelve-month data collection period ending September 30, Second, a volumetric true-up is computed by comparing the Fuel and L&U reimbursement during the same data collection period against actual Fuel use and L&U experienced. EPNG computes and collects L&U through a system-wide L&U reimbursement percentage, while the Fuel charges are separated into defined categories such as Mainline Fuel, Production Area Fuel 2 (further defined as Anadarko Basin Fuel, Permian Basin Fuel, and San Juan Basin Fuel), Permian Basin-Anadarko Basin Fuel, Willcox Lateral Incremental Fuel, and Interruptible Storage Service ( ISS ) Fuel. Lost and Unaccounted-for Gas The total overall system-wide L&U reimbursement percentage decreases to 0.12%. 3 The current period collection percentage decreases from 0.14% to 0.13% and the volumetric true-up decreases from 0.03% to negative 0.01%. Mainline Fuel EPNG proposes a Total Mainline Fuel reimbursement percentage of 2.15%, which is a decrease from the existing Total Mainline Fuel reimbursement percentage of 2.24%. 4 The Total Mainline Fuel reimbursement percentage is composed of a current period reimbursement percentage of 2.24% and a prior period true-up reimbursement percentage of negative 0.09%. This represents a decrease in the current period reimbursement percentage from 2.29% to 2.24% and a decrease in the prior period true-up reimbursement percentage from negative 0.05% to negative 0.09% or a total decrease of 0.09%. Production Area Fuel Anadarko Basin Fuel The total fuel reimbursement percentage for the Anadarko Basin is proposed to be 0.25% which is composed of a current period Fuel reimbursement percentage of 0.30% and a prior period true-up percentage of negative 0.05%. 5 This is a decrease of 0.20% percent, as compared to the total existing fuel reimbursement percentage of 0.45%. The decrease is primarily due to the increase in throughput in the Anadarko The term current period percentage refers to the collection period. The term prior period true-up percentage refers to volumetric true-up percentage. The term Within Basin in the attached schedule is synonymous with the term Production Area. See Appendix A, Schedule 1, Line 9. See Appendix A, Schedule 1, Line 1. See Appendix A, Schedule 1, Line 3.

3 Federal Energy Regulatory Commission 3 November 29, 2018 Basin and more efficient use of compression. The current period and prior period trueup percentages in the Anadarko Basin were calculated using the throughput volumes and fuel burned during the 12-month data collection period ending September 30, Permian Basin Fuel The total fuel reimbursement percentage for the Permian Basin is proposed to be 0.13% which is composed of a current period fuel reimbursement percentage of 0.28%, and a prior period true-up rate of negative 0.15%. 6 This is a decrease of 0.24%, as compared to the existing fuel reimbursement rate of 0.37%. This decrease is primarily due to an increase in throughput in the Permian Basin which also contributed to an over-collection of fuel during most recent 12-month period. The current period fuel reimbursement and true-up percentages in the Permian Basin were calculated using the throughput volumes and fuel burned during the data collection period ending September 30, San Juan Basin Fuel The total fuel reimbursement percentage for the San Juan Basin is proposed to be 0.58% which is composed of a current period fuel reimbursement percentage of 0.48%, and a prior period true-up percentage of 0.10%. 7 This is an increase of 0.47%, from the total existing fuel reimbursement percentage of 0.11% and is due to the elimination of the large negative true-up percentage of negative 0.37% which returned over-collected fuel over the recent 12-month period compared to the proposed true-up percentage of 0.10%. The current period fuel reimbursement and true-up percentages in the San Juan Basin were calculated using the throughput volumes and fuel burned during the data collection period ending September 30, Permian-Anadarko Area Fuel The total fuel reimbursement percentage for the Permian-Anadarko Area Fuel zone is proposed to be 0.48% which is composed of a current period fuel reimbursement percentage of 0.35%, and a prior period true-up percentage of 0.13%. 8 This is an overall increase of 0.07% compared to the existing rate of 0.41%. The increase is attributable to a 0.10% higher current period reimbursement percentage which is slightly offset by a 0.03% decrease in the prior period true-up percentage. The current period fuel reimbursement and prior period true-percentages in the Permian- Anadarko Area Fuel zone were calculated using the throughput volumes and fuel burned in the data collection period ending September 30, See Appendix A, Schedule 1, Line 4. See Appendix A, Schedule 1, Line 5. See Appendix A, Schedule 1, Line 6.

4 Federal Energy Regulatory Commission 4 November 29, 2018 Willcox Lateral Incremental Fuel Based on the throughput and fuel burned during the data collection period, EPNG proposes a total fuel reimbursement percentage for the Willcox Lateral of 1.26%, which is composed of a current period fuel reimbursement percentage of 1.27%, and a prior period true-up percentage of negative 0.01%. 9 Overall, this is an increase of 0.23% from the existing total reimbursement percentage of 1.03% due to the elimination of a large over-collection in the previous period which results in a minimal negative true-up reimbursement percentage of negative 0.01% compared to negative 0.20%. The workpapers included in the Appendix A-E of this filing fully support and explain the proposed reimbursement percentages for each fuel reimbursement category and for the overall L&U. Tariff Record Section 3 Fuel and L&U of Part II Statement of Rates is tendered to revise the Fuel and Lost and Unaccounted Reimbursement Percentages, as follows: Reimbursement Category Currently Effective Total Percentage (Inclusive of True-ups) Collection Period Percentage Volumetric True-up Percentage Proposed Total Percentage (Inclusive of True-ups) Mainline Fuel (0.09) 2.15 Anadarko Within Basin (0.05) 0.25 Permian Within Basin (0.15) 0.13 San Juan Within Basin Permian-Anadarko Area Interruptible Storage Service (0.02) 1.55 Willcox Lateral Incremental (0.01) 1.26 Lost and Unaccounted For (0.01) 0.12 Operational Purchases and Sales Report As required by GT&C Section 13.3(b) of the Tariff, EPNG is including, as Appendix F, Schedules 1 through 7 of its Operational Purchases and Sales report for the time period of October 2017 through September See Appendix A, Schedule 1, Line 8.

5 Federal Energy Regulatory Commission 5 November 29, 2018 Procedural Matters Inasmuch as this filing is fully described herein, the statement of the nature, the reasons and the basis for the instant tariff filing required by 18 C.F.R (a)(6) (2018) of the Commission's regulations is omitted. In accordance with the applicable provisions of Part 154 of the Commission's regulations 10, EPNG is submitting an etariff filing XML package, which includes the following: 1) a transmittal letter; 2) clean and marked versions of the tariff record in PDF format; 3) workpapers under Appendices A-E in PDF format, and; 4) Operational Purchases and Sales Report pursuant to Section 13.3(b) of the GT&C under Appendix F. EPNG respectfully requests the Commission accept the tendered tariff record for filing and permit it to become effective January 1, 2019, which is not less than 30 days from the date of this filing. If the Commission allows any tariff provision to go into effect without change, EPNG hereby moves to place the tendered tariff provision into effect at the end of the suspension period, if any, specified by the Commission. Additionally, pursuant to 18 C.F.R (a)(7) (2018) of the Commission s regulations, EPNG respectfully requests that the Commission grant all necessary waivers in order to effectuate this filing. to: Correspondence and communications concerning this filing should be directed Ms. M. Catherine Rezendes Mr. David R. Cain Director, Rates Assistant General Counsel El Paso Natural Gas Company, L.L.C. El Paso Natural Gas Company, L.L.C. Post Office Box 1087 Post Office Box 1087 Colorado Springs, CO Colorado Springs, CO Telephone: (719) Telephone: (719) Facsimile: (719) Facsimile: (719) EPNGRegulatoryAffairs@kindermorgan. com David_Cain@kindermorgan. com These persons have been designated for service in accordance with Rule 203 of the Commission's Rules of Practice and Procedure (18 C.F.R (2018)) C.F.R (2018).

6 Federal Energy Regulatory Commission 6 November 29, 2018 The undersigned hereby certifies that she has read this filing and knows (i) the contents of such filing and the attachments; (ii) that the contents as stated in the filing and in the attachments are true to the best of her knowledge and belief; and (iii) that she possesses full power and authority to sign this filing. Respectfully submitted, EL PASO NATURAL GAS COMPANY, L.L.C. By: /s/ M. Catherine Rezendes Director, Rates Enclosures

7 Certificate of Service I hereby certify that I have this day caused a copy of the foregoing document to be served upon all shippers on EPNG s system and interested state regulatory commissions, in accordance with the requirements of Section and of the Federal Energy Regulatory Commission's Rules of Practice and Procedures. Dated at Colorado Springs, Colorado as of this 29 th day of November, /s/ M. Catherine Rezendes Post Office Box 1087 Colorado Springs, CO (719)

8 Clean Tariff Section

9 Part II: Stmt. of Rates FERC Gas Tariff Section 3 - Fuel and L&U Rates Third Revised Volume No. 1A Version STATEMENT OF RATES FOR TRANSPORTATION OF NATURAL GAS FUEL CHARGES 1/ Collection Volumetric Total Fuel and L&U Period True-up Retention Mainline Fuel: 2.24% -0.09% 2.15% Production Area Fuel: Anadarko Basin: 0.30% -0.05% 0.25% Permian Basin: 0.28% -0.15% 0.13% San Juan Basin: 0.48% 0.10% 0.58% Permian - Anadarko Fuel: 0.35% 0.13% 0.48% Rate Schedule ISS Fuel: 1.57% -0.02% 1.55% Willcox Lateral Incremental Fuel: 2/ 1.27% -0.01% 1.26% L&U: 3/ 0.13% -0.01% 0.12% 1/ The Fuel charges are applicable to the quantity received. The Fuel charge may be discounted by Transporter; provided, however, that the discounted fuel shall not be less than actual fuel incurred. See Section 13 of the GT&C for further information. 2/ New firm service in effect after the in service date of the Willcox Lateral Expansion facilities shall be assessed the Willcox Lateral Incremental Fuel percentage. Issued on: November 29, 2018 Effective on: January 1, 2019

10 Part II: Stmt. of Rates FERC Gas Tariff Section 3 - Fuel and L&U Rates Third Revised Volume No. 1A Version / Transporter shall assess L&U charges only once. As long as Transporter is the sole supplier of quantities to the Willcox Lateral, L&U charges will be assessed on a Shipper s mainline TSA. If, in the future, a third party physically interconnects with the Willcox Lateral, Transporter will assess a Commission-approved L&U charge on the quantities supplied by the third party. Issued on: November 29, 2018 Effective on: January 1, 2019

11 Marked Tariff Section

12 Part II: Stmt. of Rates FERC Gas Tariff Section 3 - Fuel and L&U Rates Third Revised Volume No. 1A Version STATEMENT OF RATES FOR TRANSPORTATION OF NATURAL GAS FUEL CHARGES 1/ Collection Volumetric Total Fuel and L&U Period True-up Retention Mainline Fuel: 2.249% % % Production Area Fuel: Anadarko Basin: 0.301% % % Permian Basin: % % % San Juan Basin: 0.48% % % Permian - Anadarko Fuel: 0.325% 0.136% % Rate Schedule ISS Fuel: % % % Willcox Lateral Incremental Fuel: 2/ 1.273% % % L&U: 3/ 0.134% % % 1/ The Fuel charges are applicable to the quantity received. The Fuel charge may be discounted by Transporter; provided, however, that the discounted fuel shall not be less than actual fuel incurred. See Section 13 of the GT&C for further information. 2/ New firm service in effect after the in service date of the Willcox Lateral Expansion facilities shall be assessed the Willcox Lateral Incremental Fuel percentage. Issued on: November 29, 2018 Effective on: January 1, 2019

13 Part II: Stmt. of Rates FERC Gas Tariff Section 3 - Fuel and L&U Rates Third Revised Volume No. 1A Version / Transporter shall assess L&U charges only once. As long as Transporter is the sole supplier of quantities to the Willcox Lateral, L&U charges will be assessed on a Shipper s mainline TSA. If, in the future, a third party physically interconnects with the Willcox Lateral, Transporter will assess a Commission-approved L&U charge on the quantities supplied by the third party. Issued on: November 29, 2018 Effective on: January 1, 2019

14 Docket No. RP19- Appendix Table of Contents Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Fuel and L&U Reimbursement Percentages Summary Fuel Reimbursement Percentages Calculations L&U Reimbursement Percentage Calculations Throughput Interruptible Storage Service Reimbursement Percentage Calculation Operational Purchases and Sales Report

15 Docket No. RP19- Appendix A Fuel and L&U Reimbursement Percentages Summary

16 Docket No. RP Appendix A Schedule 1 Page 1 of 1 El Paso Natural Gas Company, L.L.C. Proposed Retention Percentages to be Effective January 1, 2019 Line No. Retention Category Collection Period Percentage Volumetric Trueup Percentage Total Retention Percentage (a) (b) (c) (d) [(b) + (c)] 1 Mainline Fuel (Forward Haul) 1/ 2.24% -0.09% 2.15% 2 Production Area Fuel: 2/ 3 Anadarko Basin 0.30% -0.05% 0.25% 4 Permian Basin 0.28% -0.15% 0.13% 5 San Juan Basin 0.48% 0.10% 0.58% 6 Permian-Anadarko Fuel 3/ 0.35% 0.13% 0.48% 7 Rate Schedule ISS Fuel 4/ 1.57% -0.02% 1.55% 8 Willcox Lateral Incremental Fuel 5/ 1.27% -0.01% 1.26% 9 L&U 6/ 0.13% -0.01% 0.12% Notes: 1/ See Appendix B, Schedule 1, Page 1, Column (b), Lines / See Appendix B, Schedule 1, Page 1, Columns (c), (d), and (f), Lines / See Appendix B, Schedule 1, Page 1, Column (e), Lines / See Appendix E, Schedule 1, Page 1, Column (b), Lines / See Appendix B, Schedule 1, Page 1, Column (g), Lines / See Appendix C, Schedule 1, Page 1, Column (b), Lines

17 Docket No. RP19- Appendix B Fuel Reimbursement Percentages Calculations

18 Docket No. RP Appendix B Schedule 1 Page 1 of 1 El Paso Natural Gas Company, L.L.C. Fuel Percentages (Quantities in Dth unless otherwise noted) Willcox Lateral Line No. Description Mainline System Anadarko Basin Permian Basin Permian-Anadarko San Juan Basin Incremental Total (a) (b) (c) (d) (e) (f) (g) (h) Fuel 1 Fuel Gas - October September / 27,184, , , , , ,297 29,525,271 2 Current Period Fuel Retention - October September / 28,274, ,418 1,479, , , ,002 31,101,748 3 Fuel Retention Deficiency/(Gain) [line 1 - line 2] (1,090,814) 1,788 (541,226) 86,851 (9,370) (23,705) (1,576,477) 4 True-up Quantity Sought in RP Deficiency/(Gain) 3/ (458,564) 20,045 (112,901) 70,219 (61,745) (81,850) (624,796) 5 Remaining Fuel True-up Quantity Sought in RP Deficiency/(Gain) 4/ 208,597 6,521 (20,368) (6,090) 2,832 (27,076) 164,416 6 Net Prior Period Fuel Deficiency/(Gain) [line 4 + line 5] (249,967) 26,566 (133,269) 64,129 (58,913) (108,926) (460,380) 7 Prior Period Volumetric True-up Retention 5/ (244,881) 47,621 (160,096) 66,448 (144,092) (126,046) (561,047) 8 Prior Period Fuel True-up Deficiency/(Gain) [line 6 - line 7] (5,086) (21,055) 26,828 (2,320) 85,179 17, ,667 9 Net Fuel True-up Deficiency/(Gain) [lines 3 + 8] (1,095,900) (19,267) (514,399) 84,532 75,809 (6,585) (1,475,810) 10 System Throughput - Fuel 6/ 1,212,016,557 36,721, ,021,359 66,479,663 75,750,579 54,920,058 1,781,909, Current Period Fuel Retention Percentage 11/ [line 1 / (line 10)] 2.24% 0.30% 0.28% 0.35% 0.48% 1.27% 12 Prior Period Fuel Deficiency 11/ [line 9 / (line 10)] -0.09% -0.05% -0.15% 0.13% 0.10% -0.01% 13 Total Fuel Retention Percentage [line 11 + line 12] 2.15% 0.25% 0.13% 0.48% 0.58% 1.26% Notes: 1/ See Appendix B, Schedule 2, Line 13. 2/ See Appendix B, Schedule 2, Line 26. 3/ See EPNG's Annual Recomputation of Fuel and Lost and Unaccounted-for Retention Percentages filing in Docket No. RP The below quantities for each fuel retention category were sought for true-up during the 12-month period commencing January Since only 9 months of the 12-month true-up period have elapsed as of September 2018, EPNG is only reflecting 9/12th of the true-up amount for comparison. The remaining quantities will be reflected in EPNG's next annual FL&U filing. 9/12 of True-up From RP18-199, App B. Total Volumetric True-up Recovered in Docket No. 3/12 of True-up Deferred Fuel Category Sch. 1, Ln. 9 Sought in RP RP to the next filing Mainline Column (b) (611,418) (458,564) (152,855) Anadarko Basin Column (c) 26,727 20,045 6,682 Permian Basin Column (d) (150,534) (112,901) (37,634) Permian-Anadarko Column (e) 93,625 70,219 23,406 San Juan Column (f) (82,327) (61,745) (20,582) Willcox Lateral Column (g) (109,133) (81,850) (27,283) 4/ See Appendix B, Schedule 7, Line 3. (833,061) (624,796) (208,265) 5/ See Appendix B, Schedule 2, Page 1, Line 39. 6/ See Appendix D, Schedule 1.

19 Docket No. RP Appendix B Schedule 2 Page 1 of 2 El Paso Natural Gas Company, L.L.C. Transportation Fuel Gas (Quantities in Dth) Fuel Gas 1/ Line No. Month Mainline System Anadarko Basin Permian Basin Permian-Anadarko San Juan Basin Willcox Lateral Incremental 2/ Total (a) (b) (c) (d) (e) (f) (g) (h) Pre October ,852 2,852 1 October-17 2,360,763 11,061 78,929 17,632 31,782 54,379 2,554,546 2 November-17 2,179,336 11,676 81,602 15,051 27,137 47,223 2,362,025 3 December-17 2,467,181 5,915 76,504 12,470 29,631 53,974 2,645,675 4 January-18 2,276,727 3,024 74,989 9,504 32,866 51,972 2,449,082 5 February-18 2,177,536 4,534 61,785 15,649 25,085 46,067 2,330,656 6 March-18 2,110,328 7,516 62,089 23,603 28,630 52,169 2,284,335 7 April-18 2,043,131 19,937 61,549 31,151 29,503 49,307 2,234,578 8 May-18 1,959,957 9,440 81,223 29,432 31,966 49,158 2,161,176 9 June-18 2,037,170 10,077 77,877 17,680 31,134 72,218 2,246, July-18 2,453,374 12,312 86,899 24,513 33,081 72,517 2,682, August-18 2,636,140 6, ,010 16,666 32,669 76,671 2,875, September-18 2,479,626 7,998 87,972 16,950 31,434 71,642 2,695, Total 27,184, , , , , ,297 29,525,271 Current Period Fuel Retention 3/ Month Mainline System Anadarko Basin Permian Basin Permian-Anadarko San Juan Basin Willcox Lateral Incremental Total 14 October-17 2,424,575 4, ,331 6,303 26,243 75,049 2,672, November-17 2,168,390 4, ,919 6,012 42,394 57,778 2,407, December-17 2,440,590 8, ,983 5,077 29,307 67,099 2,681, January-18 2,280,610 12, ,491 9,039 28,499 50,815 2,504, February-18 2,139,393 13, ,068 10,114 30,611 51,071 2,350, March-18 2,232,720 15, ,516 14,414 35,847 54,005 2,483, April-18 2,546,361 7, ,605 16,718 33,748 53,540 2,796, May-18 2,282,335 6, ,902 14,765 30,161 58,400 2,522, June-18 2,249,740 5, ,416 13,977 25,073 59,463 2,476, July-18 2,504,363 6, ,125 18,520 20,095 66,838 2,730, August-18 2,612,507 10, ,105 13,680 34,442 64,741 2,842, September-18 2,393,352 12, ,194 14,831 37,868 62,203 2,632, Total 28,274, ,418 1,479, , , ,002 31,101,748 Volumetric True-up Retention 3/ Month Mainline System Anadarko Basin Permian Basin Permian-Anadarko San Juan Basin Willcox Lateral Incremental Total 27 October-17 72,033 1,546 (10,693) (5,157) 18,467 (15,510) 60, November-17 64,637 1,658 (10,111) (4,919) 29,833 (11,941) 69, December-17 72,790 3,366 (10,195) (4,154) 20,623 (13,867) 68, January-18 (49,812) 5,568 (14,701) 5,785 (21,968) (8,263) (83,391) 31 February-18 (46,966) 6,132 (12,627) 6,473 (23,596) (8,304) (78,888) 32 March-18 (48,769) 7,176 (15,538) 9,225 (27,632) (8,781) (84,319) 33 April-18 (47,883) 3,527 (16,501) 10,700 (26,014) (8,706) (84,877) 34 May-18 (48,040) 2,826 (15,584) 9,450 (23,249) (9,496) (84,092) 35 June-18 (49,002) 2,475 (14,573) 8,945 (19,327) (9,669) (81,151) 36 July-18 (54,770) 3,039 (13,586) 11,852 (15,490) (10,868) (79,823) 37 August-18 (56,946) 4,558 (12,751) 8,756 (26,549) (10,527) (93,459) 38 September-18 (52,154) 5,749 (13,237) 9,492 (29,190) (10,114) (89,454) 39 Total (244,881) 47,621 (160,096) 66,448 (144,092) (126,046) (561,047) Notes: 1/ See Appendix B, Schedule 3, Page 1, Line 29 for the within basin and the Permian-Anadarko fuel allocations and Line 42 for the total mainline fuel. 2/ See Appendix B, Schedule 6, Line 150 for Willcox Lateral Incremental Fuel. 3/ Includes FL&U amounts retained from shippers using EPNG's capacity on the Mojave system. The retention rates during the collection period were: Willcox Lateral Mainline System Anadarko Basin Permian Basin Permian-Anadarko San Juan Basin Incremental Collection Period Oct 17 - Dec % 0.24% 0.51% 0.11% 0.54% 1.50% Jan 18 - Current 2.29% 0.31% 0.42% 0.25% 0.48% 1.23% Volumetric True-up Oct 17 - Dec % 0.09% -0.04% -0.09% 0.38% -0.31% Jan 18 - Current -0.05% 0.14% -0.05% 0.16% -0.37% -0.20%

20 Docket No. RP Appendix B Schedule 3 Page 1 of 1 El Paso Natural Gas Company, L.L.C. Within Basin Gas Used and Allocation Workpaper Total Gas Used by Area 1/ Line No. Description Anadarko Basin Permian Basin San Juan Basin Permian-Anadarko Mainline Total Gas Used (a) (b) (c) (d) (e) (f) (g) Pre October ,852 2,852 1 October-17 30, , ,968 21,678 1,957,311 2,500,167 2 November-17 32, , ,010 18,505 1,793,696 2,314,802 3 December-17 16, , ,094 15,331 2,092,185 2,591,701 4 January-18 8, , ,958 11,685 1,893,917 2,397,110 5 February-18 12, , ,778 19,239 1,867,549 2,284,589 6 March-18 20, , ,638 29,019 1,773,068 2,232,166 7 April-18 55, , ,271 38,298 1,678,570 2,185,271 8 May-18 26, , ,152 36,185 1,549,697 2,112,018 9 June-18 28, , ,787 21,737 1,641,750 2,173, July-18 34, , ,347 30,138 2,018,178 2,610, August-18 18, , ,686 20,490 2,162,407 2,799, September-18 22, , ,724 20,839 2,060,056 2,623, Total Area Fuel 307,380 3,392,801 2,353, ,144 22,491,236 28,827,974 Allocation of Basin Fuel to Mainline 14 Within Basin/Path Fuel Used 2/ 110, , , , Total Area Fuel 3/ 307,380 3,392,801 2,353, ,524 Percentage Applicable to Basin/Path 16 [Line 14 / Line 15] 35.9% 27.7% 15.5% 81.3% Within Basin, Permian-Anadarko, and Storage Transactions Fuel Allocation 4/ Month Anadarko Basin Permian Basin San Juan Basin Permian-Anadarko Storage Total Area Fuel 17 October-17 11,061 78,929 31,782 17, , November-17 11,676 81,602 27,137 15, , December-17 5,915 76,504 29,631 12, , January-18 3,024 74,989 32,866 9, , February-18 4,534 61,785 25,085 15, , March-18 7,516 62,089 28,630 23, , April-18 19,937 61,549 29,503 31, , May-18 9,440 81,223 31,966 29, , June-18 10,077 77,877 31,134 17, , July-18 12,312 86,899 33,081 24, , August-18 6, ,010 32,669 16, , September-18 7,998 87,972 31,434 16, , Total Area Fuel 110, , , ,301-1,643,853 Month Mainline Fuel Allocation Area Gas Used Total Gas Used After Allocation Total Mainline Fuel [col (g), lines 1-12] [col (g), lines 17-28] [(b) - (c)] Pre October ,852-2, October-17 2,500, ,404 2,360, November-17 2,314, ,466 2,179, December-17 2,591, ,520 2,467, January-18 2,397, ,383 2,276, February-18 2,284, ,053 2,177, March-18 2,232, ,838 2,110, April-18 2,185, ,140 2,043, May-18 2,112, ,061 1,959, June-18 2,173, ,768 2,037, July-18 2,610, ,805 2,453, August-18 2,799, ,061 2,636, September-18 2,623, ,354 2,479, Total Mainline Fuel 28,825,122 1,643,853 27,181,269 Notes: 1/ See Appendix B, Schedule 6 for total compressor and other fuel gas consumed. 2/ See Appendix B, Schedule 4, Page 1, Line 8 for the basin fuel; See Appendix B, Schedule 5, Page 1, Line 5 for the Permian-Anadarko fuel. 3/ See Appendix B, Schedule 4, Page 1, Line 1 for the basin fuel total; See Appendix B, Schedule 5, Page 1, Line 3 for the Permian-Anadarko fuel total. 4/ Since a portion of the fuel consumed within a particular basin is attrubitable to the basin's receipts that are transported on the mainline, a portion of the basin fuel is allocated to the mainline, based on a ratio of throughput contained within a basin to total receipts from the same basin. A similar allocation is performed for the Permian-Anadarko fuel. The indicated percentages calculated on line 16 are multiplied by the area fuel detailed in lines 1 through 12. The result is shown on lines 17 through 28.

21 Within Basin Allocation Workpaper Docket No. RP Appendix B Schedule 4 Page 1 of 1 Line No. Description Anadarko Basin Permian Basin San Juan Basin (a) (b) (c) (d) 1 Fuel 1/ 307,380 3,392,801 2,353,413 2 Throughput - Deliveries Sourced From Basin 2/ 40,479,472 1,181,102, ,882,429 3 Additional Throughput Volumes 3/ 62,247,782 37,140,148-4 Total Throughput 102,727,254 1,218,242, ,882,429 5 Basin Fuel Percentage for Collection Period [line 1 / line 4] 0.30% 0.28% 0.48% 6 Within Basin Volumes Received [line 7 / line 5)] 4/ 36,831, ,959,791 76,115,496 7 Within Basin Volumes Delivered 5/ 36,721, ,021,359 75,750,579 8 Actual Within Basin Fuel [line 6 - line 7] 6/ 110, , ,917 Notes: 1/ See Appendix B, Schedule 6, Page 2-3 totals for each basin. 2/ See Appendix D, Schedule 1, Page 1 for deliveries sourced from each basin. 3/ See Appendix D, Schedule 4, Page 1, Line 13. 4/ Within basin deliveries grossed upward for basin fuel, based on fuel percentage calculated on line 5. 5/ See the deliveries within the basin in Appendix D, Schedule 1, Page 1, Column (d). 6/ Fuel attributable to the transactions within a basin.

22 Permian-Anadarko Allocation Workpaper Docket No. RP Appendix B Schedule 5 Page 1 of 1 Line No. Description Permian-Anadarko (a) (b) 1 Anadarko Basin Fuel 1/ 307,380 2 Permian-Anadarko Fuel 2/ 283,144 3 Total Fuel North & East of Plains [line 1 + line 2] 590,524 4 Less Anadarko Within Basin Fuel 3/ 110,207 5 Permian-Anadarko Fuel [line 3 - line 4] 4/ 480,317 Notes: 1/ See Appendix B, Schedule 6, Page 2, line 96 for Anadarko Basin total. 2/ See Appendix B, Schedule 6, Page 2, line 124 for Permian-Anadarko total. 3/ See Appendix B, Schedule 4, Page 1, Column (b), Line 8. 4/ Total fuel north and east of the Plains compressor station less the portion of fuel applicable to transactions within the Anadarko Basin.

23 Compressor Fuel - FERC Accounts Docket No. RP Appendix B Schedule 6 Page 1 of 3 Line No. Fuel Consumption Location Location Quantity (Dth) State County Oct-17 Nov-17 Dec-17 Jan-18 Feb-18 Mar-18 Apr-18 May-18 Jun-18 Jul-18 Aug-18 Sep-18 Total (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (a) 1 Mainline AFTON COMPRESSOR NM NM DONA ANA - (5,009) - 3,759 10,009 19,310 32,782 30,291 8,979 15,974 22,333 11, , AFTON STA EXP NEW MEXICO NM DONA ANA - 6, , ALAMO LAKE TURBINE STATION FUEL AZ LA PAZ 27,768 13,571 50,867 58,972 11,300 24,959 18,261 36,840 36,882 27,628 39,342 38, , ALAMO TURBINE STATION AZ LA PAZ 14,409 22,214 3,554 2,734 21,906 7,158 9,103 15,786 11,790 19,405 12,576 12, , BALCK RIVER GENERATOR FUEL (ROTARY) TX CULBERSON BELEN AUXILIARY FUEL NM VALENCIA BELEN EXPANSION GAS NM VALENCIA BELEN TURBINE FUEL NM VALENCIA BLACK RIVER GENERATOR FUEL (ORIFICE) TX CULBERSON 61,812 62,589 73,159 70,267 60,195 62,729 62,561 56,905 60,171 62,995 60,673 63, , BOWIE COMP EXPAN GAS AZ COCHISE , BOWIE COMPRESSOR FUEL AZ COCHISE 45,964 36,462 48,844 30,414 49,253 15,447 2, ,532 37,501 28,363 10, , CASA GRANDE A PLANT FUEL AZ PINAL CASA GRANDE TURBINE EXPANSION FUEL AZ PINAL , CASA GRANDE TURBINE FUEL AZ PINAL 37,890 15,641 7,752 17,513 26,429 1, , CASTLE DOME TURB STATION AZ LA PAZ , CIMARRON AUXILARY FUEL AZ COCHISE 34,009 29,135 23,212 6,852 27,699 24,903 28,100 7,682 19,680 17,236 16,404 9, , CIMARRON TURBINE FUEL AZ COCHISE 74,701 67,727 75,848 74,664 71,587 66,790 68,127 66,689 58,309 68,365 72,370 70, , CORNUDAS A PLT COMP TX HUDSPETH 105,966 97, , , , ,393 92,590 87, , , , ,552 1,247, CORNUDAS B COMP TX HUDSPETH 78,629 75,436 83,341 80,446 72,624 72,543 73,898 65,230 69,972 74,776 74,213 71, , CORNUDAS B EXPANSION TEX TX HUDSPETH CORNUDAS STA EXP TEXAS TX HUDSPETH , DAG RETAINED BURN BY MOJAVE AZ MOHAVE 84,773 61,017 79,862 94,593 69,169 94,979 53,256 76,479 82,452 96,667 96,104 82, , DEMING B PLANT COMP FUEL NM LUNA DEMING COMPRESSOR NM NM LUNA DILCON B TURBINE FUEL AZ NAVAJO , ,784 59, , DILKON COMPRESSOR ARIZONA AZ NAVAJO DUTCH FLAT TURBINE FUEL AZ MOHAVE 33,826 9,441 3,486 1, ,426 26,068 29,184 36,762 33, , E.P. D PLANT 2000 TURBINE FUEL TX EL PASO 68,153 68,912 76,909 74,217 61,505 42,947 70,343 59,252 60,343 67,441 67,953 55, , EL PASO C PLANT TX EL PASO 49,914 48,582 55,557 49,232 48,438 45,077 43,224 45,453 39,940 49,459 48,477 46, , EL PASO C PLANT EXPANSION TX EL PASO , EL PASO C PLANT FUEL TX HUDSPETH 80,099 96, ,290 89,977 89,736 75,404 93,021 53,192 53,400 91,921 72,257 91, , EL PASO D PLANT FUEL TX EL PASO 43,738 28,485 29,582 13,462 16,007 9,174 2,804 1,207 10,434 22,438 49,279 38, , FLAGSTAFF COMP AND AZ COCONINO 5,736 5,608 5,844 2, , FLORIDA B PLT COMP FUEL NM LUNA 42,855 31,566 58,997 29,900 45,437 24,880 7,234 6,715 18,438 35,856 46,509 19, , FLORIDA B PLT EXP GAS NM LUNA , FLORIDA C PLANT COMPRESSOR FUEL NM LUNA 74,164 74,885 80,413 77,519 71,827 72,122 73,294 19,042 58,149 70,172 70,096 70, , FLORIDA COMPRESSOR NM NM LUNA 52,126 39,833 55,034 75,856 78,232 71,947 80,553 45,659 78,919 97,501 90,265 67, , FLORIDA STATION EXP NM NM LUNA ,414 2, , GRESHAM EXPANSION GAS TX CULBERSON 1, ,416 1,610 1, , GRESHAM TURBINE FUEL TX CULBERSON 26,611-15, , GUADALUPE GENERATOR FUEL TX CULBERSON GUADALUPE TURBINE FUEL AT TX CULBERSON 111, , , , , , , ,720 90, , , ,637 1,723, HACKBERRY EXPANSION GAS AZ MOHAVE HACKBERRY TURBINE FUEL AZ MOHAVE 29,640 16,005 20,731 22,993 15, ,247 8,802 5,434 31,532 24,934 25, , HUECO COMPRESSOR TX TX HUDSPETH 94,620 92, , ,342 99, ,195 80,829 93,108 62,515 85, ,393 82,780 1,118, HUECO STA EXP TEXAS TX HUDSPETH , LAGUNA AUX FUEL NM NM CIBOLA , LAGUNA COMPRESSOR FUEL NM CIBOLA 5,762 2,365-10, ,690 4,342 26, LEUPP A COMPRESSO AZ AZ COCONINO 71,431 69,307 77,250 75,942 77,268 73,086 39,293 34,107 72,252 45,781 53,112 63, , LEUPP AUX TURBINE FUEL AZ COCONINO 4,690 4,552 4,688 4,382 4,984 4,830 4,623 4,872 5,690 4,636 5,221 5,318 58, LEUPP C PLT TURBINE FUEL AZ COCONINO 1, , LEUPP D TURBINE FUEL AZ COCONINO , ,548 67,455 15,239 56,763 65,570 36, , LINCOLN AUX FUEL NM LINCOLN LINCOLN TURBINE FUEL NM LINCOLN ,930 35, LORDSBURG B PLT COMP FUEL NM HIDALGO 52,690 45,466 57,858 52,886 47,374 52,385 40,358 42,121 46,158 49,262 49,740 44, , LORDSBURG B PLT EXPANSION NM HIDALGO , , LORDSBURG C PLANT AUXILARY FUEL NM HIDALGO LORDSBURG C PLANT COMPRESSOR FUEL NM HIDALGO 70,957 73,688 78,217 63,444 69,911 38,900 72,122 70,504 62,591 70,479 70,368 68, , LORDSBURG COMPRESSOR NM NM HIDALGO 29,644 39,741 40,270 35,693 36,375 32,454 39,008 39,075 35,923 29,425 39,120 29, , LORDSBURG STA EXP NM NM HIDALGO , NAVAJO C PLT TURBINE FUEL AZ APACHE , , NAVAJO D PLT TURBINE FUEL AZ APACHE 9,878 6,091 9,092 8,347 7,491 7,909 46,764 11,435 24,747 33,731 24,333 4, , ORACLE COMP FUEL AZ PINAL 19,057 73,384 82,525 29,986 54,626 66,987 45,057 12,965 30,348 78,264 76,244 49, ,221

24 Compressor Fuel - FERC Accounts Docket No. RP Appendix B Schedule 6 Page 2 of 3 Line Location Quantity (Dth) No. Fuel Consumption Location State County Oct-17 Nov-17 Dec-17 Jan-18 Feb-18 Mar-18 Apr-18 May-18 Jun-18 Jul-18 Aug-18 Sep-18 Total (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) ORACLE EXPANSION GAS AZ PINAL 327 1,079 1, , , PICACHO COMPRESSOR STATION AZ PINAL ROSWELL AUX FUEL NEW MEX NM CHAVES ROSWELL COMP UNIT #1 NM CHAVES ROSWELL COMP UNIT #2 NM CHAVES , ,148 5, ROSWELL COMP UNIT #3 NM CHAVES , ,468 1,654 16,509 5,936 33, SAN SIMON COMPRESSOR FUEL AZ AZ COCHISE 46,222 46,149 54,942 20,529 42,576 42,110 38,525 28,753 45,065 46,208 51,557 35, , SAN SIMON STA EXP AZ AZ COCHISE , SELIGMAN C TURBINE FUEL AZ YAVAPAI 3, , ,015 21, SELIGMAN TURBINE FUEL AZ YAVAPAI 2,156 3,179 4,612 4,739 5,165 4,547 1, ,639 49, , TOM MIX TURBINE AZ PINAL 87,672 58,589 66,223 65,849 87,004 45,004 46,698 46,300 61,856 74,085 85,370 72, , TUCSON COMP. ARIZONA AZ PIMA TUCSON ST. AUXILARY ARIZONA AZ PIMA VAIL COMPRESSOR ARIZONA AZ PIMA VAIL STA EXP AZ AZ PIMA WASHINGTON RANCH TOTAL PLANT FUEL NM EDDY 7,925 4,860 5,416 3,988 1,948 3,697 12,539 18,969 9,310 1,263 3,034 10,836 83, WENDEN TURBINE FUEL AZ LA PAZ 51,844 51,950 54,022 50,554 18,552 46,123 49,134 43,923 50,618 51,749 52,105 52, , WENDEN TURBINE FUEL AZ LA PAZ 13,565 7,356 35,253 18,681 31,143 8, ,162 1,296 4,464 2,343 1, , WILCOX COMPRESSOR TURBIN AZ COCHISE WILCOX TURBIN EXPANSION AZ COCHISE WILLIAMS AUX GEN ARIZONA AZ COCONINO WILLIAMS B PLANT COMPRESSOR FUEL AZ AZ COCONINO 17,654 41,863 44,190 41,700 38,000 40,905 42,469 40, , , WILLIAMS C PLT FUEL GAS AZ COCONINO 94,186-18,007 42,582 46,151 74,935-13, ,350 95, ,392 94, , WINK TURBINE FUEL TX WINKLER 35,638 37,525 41,855 52,016 30,883 35,504 39,017 39,664 32,924 36,791 39,849 85, , C Account 812 Usage 47,707 58,267 66,060 33,276 35,142 66,539 47,487 58,463 56,102 63,726 35, , , Total Mainline 1,957,311 1,793,696 2,092,185 1,893,917 1,867,549 1,773,068 1,678,570 1,549,697 1,641,750 2,018,178 2,162,407 2,060,056 22,488, Anadarko #3 TURBINE FUEL SCHAFER TX CARSON DUMAS PLANT FUEL TX MOORE 24,652 25,420 8, ,655 18,695 26,194 26,268 26,207 29,146 15,663 17, , SCHAFER TURBINE FUEL TX CARSON 6,199 7,146 7,805 8,428 6,990 2, ,896 5,194 3,070 4,972 54, C Account 812 Usage , , Total Anadarko 30,851 32,566 16,497 8,435 12,645 20,963 55,608 26,329 28,107 34,340 18,733 22, , Permian AUXILIARY NEW MEXICO NM LEA B PLANT TURBINE FUEL NM LEA - 11,598 3,261 3, , CAPROCK COMPRESSOR NM NM LEA , CAPROCK EXP GAS NM NM LEA EUNICE C PLANT NM LEA 49,206 36,245 24,253 46,881 16,094 14,456 16,554 19,237 20,559 37,770 16,858 16, , GE TURBINE FUEL TEXAS TX REEVES KEYSTONE B TX WINKLER 24,220 19,502 27,242 28,789 22,169 17,833 11,247 9,568 3,988 10,510 22,591 16, , KEYSTONE ML COMP TEXAS TX WINKLER 31,649 34,331 50,000 46,062 47,991 47,041 43,379 50,133 49,165 64,665 69,354 35, , M/L COMP FUEL NM LEA MONUMENT A AUXILIARY NM NM LEA MONUMENT A COMPRESSOR NM NM LEA 26,089 25,535 27,947 25,245 25,094 26,539 29,808 24,577 28,479 31,362 29,225 30, , PECOS RIVER COMPRESSOR NM NM EDDY 66,208 60,726 47,032 8,631 2,209-38,814 85,592 79,865 88, , , , PECOS RIVER STA AUX NM EDDY PECOS RIVER STA EXP NM NM EDDY 2,048 2, ,683 3,415 7,608 8,915 8,780 8,563 3,992 48, PLAINS AUXILIARY TEXAS TX YOAKUM PLAINS COMPRESSOR TEXAS TX YOAKUM 21,290 30,451 29,222 34,140 26,137 32,956 41,086 36,482 30,270 35,164 36,310 43, , PUCKETT PLT COMP FUEL TEX TX PECOS 11,792 12,736 9,632 10,269 11,384 6,982 6,996 10,926 2,507 1,042 5, , WAHA JUMPER FUEL TO TMCM NOT KNOWN TX REEVES ,507 13,768 14,512 13,744 13,491 4,727 4, ,663 78, WAHA SOLAR FUEL TX REEVES 23,725 32,528 28,089 27,669 28,525 33,266 17,462 6,122 23,265 31,901 34,734 6, , C Account 812 Usage 29,094 29,243 29,276 29,339 29,199 29, ,190 29, ,972 34, , Total Permian 285, , , , , , , , , , , ,055 3,392, Permian-Anadarko COMPRESSOR FUEL TEXAS TX RANDALL 2, ,504 7,797 14,690 10,906 2,803 7, , DIMMITT AUX TEXAS TX LAMB DIMMITT COMPRESSOR TEXAS TX LAMB 18,825 18,401 15,011 11,285 15,559 21,088 23,513 25,059 18,933 21,598 19,103 19, , FERC Account 812 Usage ,371 1,375 3, al Permian-Anadarko 21,678 18,505 15,331 11,685 19,239 29,019 38,298 36,185 21,737 30,138 20,490 20, ,144

25 Compressor Fuel - FERC Accounts Docket No. RP Appendix B Schedule 6 Page 3 of 3 Line No. Location Quantity (Dth) State County Oct-17 Nov-17 Dec-17 Jan-18 Feb-18 Mar-18 Apr-18 May-18 Jun-18 Jul-18 Aug-18 Sep-18 Total (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) Fuel Consumption Location (a) 125 San Juan A PLANT COM FUEL NM NM SAN JUAN 20,873 19,987 24,184 23,825 21,355 23,600 23,138 22,902 17,549 22,823 19,999 15, , BLANCO MISC FUEL NM SAN JUAN BLUEWATER TURBINE FUEL NM MCKINLEY , ,156-9, BONDAD TURBINE FUEL CO LA PLATA 47,961 48,024 51,410 60,078 45,214 49,578 46,159 59,883 48,603 48,750 47,228 46, , GALLUP COMP STA B PLT NM MCKINLEY GALLUP COMP STA B PLT NM MCKINLEY GALLUP C PLANT COMPRESSOR FUEL NM MCKINLEY RIO VISTA AUX GEN FUEL NM SAN JUAN RIO VISTA CENTAR FUEL NM SAN JUAN 19, ,480 24,705 22,743 23,126 12,085 20, , RIO VISTA EXPANSION GAS NM SAN JUAN RIO VISTA SATURN FUEL NM SAN JUAN ,599 8,385 7,701 7,174 11, , , SJ ML TURBINE FUEL NM SAN JUAN WHITE ROCK EXPANSION GAS NM SAN JUAN WHITE ROCK TURBINE FUEL NM SAN JUAN WINDOW ROCK A PLANT AZ APACHE 93,225 89, , ,054 82,643 92,124 72,777 77,464 76,465 89,092 87,112 86,813 1,056, WINDOW ROCK EXPAN FUEL AZ APACHE WINDOW ROCK PLANT AZ APACHE 4,755 4,972 5,360 5,464 5,027 5,670 5,322 4,337 5,035 5,215 5,126 4,841 61, W R TURBINE 7A COMP FUEL AZ APACHE 17, ,151 16,555 30,057 24,223 27,742 28, , FERC Account 812 Usage , Total San Juan 204, , , , , , , , , , , ,724 2,353, Willcox Lateral Incremental Fuel WILCOX COMPRESSOR TURBIN AZ COCHISE 54,379 47,169 53,956 51,972 46,028 52,111 49,307 49,158 72,109 71,987 76,554 71, , WILCOX TURBIN EXPANSION AZ COCHISE FERC Account 812 Usage Total Willcox Lateral Incremental Fuel 54,379 47,223 53,974 51,972 46,067 52,169 49,307 49,158 72,218 72,517 76,671 71, ,297

26 Docket No. RP Appendix B Schedule 7 Page 1 of 1 El Paso Natural Gas Company, L.L.C. RP Prior Period True-up (Quantities in Dth unless otherwise noted) Willcox Lateral Line No. Description Mainline System Anadarko Basin Permian Basin Permian-Anadarko San Juan Basin Incremental Total (a) (b) (c) (d) (e) (f) (g) (h) 1 Fuel Deficiency/(Gain) Reported in RP / 834,390 26,086 (81,471) (24,361) 11,328 (108,305) 657,667 2 Portion Included in RP / 625,793 19,565 (61,103) (18,271) 8,496 (81,229) 493,251 3 Remaining Fuel True-up Quantities - Deficiency/(Gain) [line 1 - line 2] 208,597 6,521 (20,368) (6,090) 2,832 (27,076) 164,416 Notes: 1/ See EPNG's Annual Recomputation of Fuel and Lost and Unaccounted-for Retention Percentages filing in Docket No. RP , Appendix B, Schedule 1, Page 1, Line 9. 2/ See EPNG's Annual Recomputation of Fuel and Lost and Unaccounted-for Retention Percentages filing in Docket No. RP , Appendix B, Schedule 1, Page 1, Line 4.

27 Docket No. RP19- Appendix C L&U Reimbursement Percentage Calculations

28 L&U Percentage (Quantities in Dth unless otherwise noted) Docket No. RP Appendix C Schedule 1 Page 1 of 1 Line No. Description L&U (a) (b) 1 L&U Experienced 1/ 2,389,354 2 Current Period L&U Retention 2/ 2,416,305 3 L&U Retention Deficiency/(Gain) [line 2 - line 3] (26,951) 4 L&U True-up Quantity Sought in RP Deficiency/(Gain) 3/ 319,514 5 Remaining L&U True-up Quantities Sought in RP Deficiency/(Gain) 4/ (152,226) 6 Net Prior Period L&U Deficiency/(Gain) [line 4 + line 5 + line ] 167,288 7 Prior Period Volumetric True-up Retention 5/ 242,462 8 Prior Period L&U True-up Deficiency/(Gain) [line 6 - line 7] (75,175) 9 Net L&U True-up Deficiency/(Gain) [line 3 + line 8 ] (102,126) 10 System Deliveries - L&U 6/ 1,791,976, Current Period L&U Retention Percentage [line 1 / (line 10)] 0.13% 12 Prior Period L&U Deficiency [line 9 / (line 10 )] -0.01% 13 Total L&U Retention Percentage [line 11 + line 12] 0.12% Notes: 1/ See Appendix C, Schedule 2, Page 1, Column (b), Line 14. 2/ See Appendix C, Schedule 2, Page 1, Column (b), Line 27. 3/ See EPNG's Annual Recomputation of Fuel and Lost and Unaccounted-for Retention Percentages filing in Docket No. RP , Appendix C, Schedule 1, Line 9. An under-collection of 426,018 Dth was sought for true-up. Since only 9 months of the 12-month true-up period has passed as of September 2018, 9/12ths of this under recovery is included here. 4/ See EPNG's Recomputation of Fuel and Lost and Unaccounted-for Retention Percentages filing in Docket No. RP17-209, Appendix C, Schedule 1, Line 10. An over-collection balance of 608,904 Dth was sought for true-up during the period of January 2018 through December 2018 and EPNG reflected 456,678 Dth of that amount in RP This filing reflects the remaining L&U True-Up deficiency quantities. 5/ See Appendix C, Schedule 2, Column (b), Line 40. 6/ See Appendix D, Schedule 1, Page 1, Column (e), Line 6.

29 Lost and Unaccounted For Gas Docket No. RP Appendix C Schedule 2 Page 1 of 1 Actual L&U Line No. Month Quantity (Dth) (a) (b) 1 Pre October 17 (6,339) 2 October ,191 3 November ,347 4 December ,163 5 January ,019 6 February ,901 7 March ,078 8 April-18 18,921 9 May , June , July , August , September-18 98, Total 2,389,354 Current Period L&U Retention 1/ Quantity Month (Dth) 15 October , November , December , January , February , March , April , May , June , July , August , September , Total 2,416,305 Volumetric True-up L&U Retention 2/ Quantity Month (Dth) 28 October-17 (57,845) 29 November-17 (53,948) 30 December-17 (58,431) 31 January-18 44, February-18 41, March-18 46, April-18 46, May-18 46, June-18 44, July-18 46, August-18 48, September-18 46, Total 242,462 Notes: 1/ Reflects current period retention of 0.12% during the October - December 2017, and 0.14% during the January - September 2018 period. 2/ Reflects volumetric true-up retention of -0.04% during the October - December 2017, and 0.03% during the January - September 2018 period.

30 Docket No. RP19- Appendix D Throughput

31 Summary of System Throughput Docket No. RP Appendix D Schedule 1 Page 1 of 1 Line No. Annual Receipt Quantities (Dth) Supply Receipt Area Backhaul and Other No-Fuel Transactions 1/ Mainline, Forward Haul Production Area Transactions Total (a) (b) (c) (d) (e) 1 Anadarko Basin - 3,758,262 36,721,210 40,479,472 2 California 3,578,683 9,453,888-13,032,571 3 Permian Basin 61,408, ,672, ,021,359 1,181,102,709 4 Permian-Anadarko ,479,663 66,479,663 5 San Juan Basin - 415,131,850 75,750, ,882,429 6 Total 64,987,476 1,212,016, ,972,811 1,791,976,844 7 Willcox Lateral Incremental 54,920,058 54,920,058 Notes: 1/ See Appendix D, Schedule 3, Page 1 for details on the backhaul and other no-fuel consuming transactions.