Northern Natural Gas Company P.O. Box 3330 Omaha, NE 68103-0330 402 398-7200 February 1, 2016 Ms. Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, N.E. Washington, D.C. 20426 Re: Northern Natural Gas Company Docket No. RP16-___-000 Periodic Rate Adjustments for Fuel Dear Ms. Bose: Northern Natural Gas Company (“Northern”) submits herewith for filing as part of its F.E.R.C. Gas Tariff, Sixth Revised Volume No. 1 (Tariff), the following tariff sheets to be effective April 1, 2016: SIXTH REVISED VOLUME NO. 1 Tenth Revised Sheet No. 50 Eleventh Revised Sheet No. 51 Tenth Revised Sheet No. 52 Ninth Revised Sheet No. 53 Thirteenth Revised Sheet No. 54 Eighth Revised Sheet No. 60 Eighth Revised Sheet No. 60A Sixth Revised Sheet No. 61 Twelfth Revised Sheet No. 62 Reason for Filing The revised tariff sheets are being filed in accordance with Sections 53A and 53B of the General Terms and Conditions of Northern’s Tariff, as further discussed herein. This filing establishes the Field Area and Storage fuel percentages to be in effect for the April 1, 2016 through March 31, 2017 annual period, based on actual data for the twelve-month period January 1, 2015 through December 31, 2015. This filing also Kimberly D. Bose, Secretary February 1, 2016 Page 2 of 6 establishes the Market Area fuel percentage to be in effect for the Summer Season of April 1, 2016 through October 31, 2016. In addition, the filing establishes the unaccounted for (UAF) percentage to be in effect for both the Market Area and Field Area for the annual period of April 1, 2016 through March 31, 2017, based on actual data for the twelve-month period January 1, 2015 through December 31, 2015. True-up adjustments for all fuel and UAF percentages are also included. Pursuant to Section 53B of the General Terms and Conditions, the filing establishes the Market Area Electric Compression charge to be in effect for the April 1, 2016 through March 31, 2017 annual period, based on actual data for the twelvemonth period January 1, 2015 through December 31, 2015. Although the proposed effective date of the tariff sheets is April 1, 2016, Northern respectfully requests that the Federal Energy Regulatory Commission (FERC or Commission) issue an order by March 18, 2016. A number of shippers will be making supply arrangements for the entire summer season of April through October. Knowing the fuel retention percentages as far in advance of April 1 as possible will assist in their planning and contracting processes. Fuel and UAF Percentages Effective April 1, 2016 – Summary of Changes A summary of the proposed changes from the 2015 PRA filing in Mainline Fuel, Storage Fuel and UAF percentages, with true-ups reflected, is as follows: Section 1 (Permian Area) Section 2 (Mid-Continent Area) Storage UAF Section 3 (Market Area) April 1, 2015 0.97% 1.92% 1.76% -0.09% April 1, 2016 1.01% 1.29% 1.19% -0.25% Summer - 2015 0.62% Summer - 2016 0.70% Section 1 (Permian) The changes in the base and true-up components of the Permian fuel percentage are shown in the following table. Base fuel percentage True-up percentage Total April 1, 2015 1.10% -0.13% 0.97% April 1, 2016 1.08% -0.07% 1.01% Change -0.02% 0.06% 0.04% Kimberly D. Bose, Secretary February 1, 2016 Page 3 of 6 Section 2 (Mid-Continent) The changes in the base and true-up components of the Mid-Continent fuel percentage are shown in the following table. Base fuel percentage True-up percentage Total April 1, 2015 1.51% 0.41% 1.92% April 1, 2016 1.27% 0.02% 1.29% Change -0.24% -0.39% -0.63% Section 3 (Market Area) The changes in the base and true-up components of the Market Area fuel percentages for April – October, 2016, are shown in the following table. Base fuel percentage True-up percentage Total April 1, 2015 0.75% -0.13% 0.62% April 1, 2016 0.72% -0.02% 0.70% Change -0.03% 0.11% 0.08% Storage The changes in the base and true-up components of the Storage fuel percentages are shown in the following table. Base fuel percentage True-up percentage Total April 1, 2015 1.66% 0.10% 1.76% April 1, 2016 1.43% -0.24% 1.19% Change -0.23% -0.34% -0.57% Kimberly D. Bose, Secretary February 1, 2016 Page 4 of 6 UAF The changes in the base and true-up components of the UAF percentage are shown in the following table. Base UAF percentage True-up percentage Total April 1, 2015 0.07% -0.16% -0.09% April 1, 2016 -0.01% -0.24% -0.25% Change -0.08% -0.08% -0.16% Since the UAF percentage is a negative number, Northern will continue to utilize the accounting mechanism described in footnote 4 of the currently effective Tariff Sheet No. 54. For deliveries subject only to UAF, the UAF rate will be zero; however, Northern will issue a volume credit on the shipper’s monthly imbalance statement equivalent to the associated -0.25% UAF for April, 2016 through March, 2017. Such quantities will be resolved in accordance with the provisions for resolution of imbalances found in Section 32 of the General Terms and Conditions of Northern’s FERC Gas Tariff. The base UAF percentage reflects an adjustment shown in Schedule 7 attached to this filing. The adjustment reverses a one-time correction booked in June, 2015 for unreported measured volumes by a third party for a prior period. If the correcting entry had not been reversed out in the base UAF computation, it would distort the UAF percentage going forward beginning April 1, 2016. However, the correction for the unreported measured volumes remains in the true-up percentage in order to pay back customers for the gas. Market Area Electric Compression Charge The Market Area Electric Compression (ECM) commodity surcharge decreased from $0.0010 to $0.0006. Supporting Schedules Supporting information for the proposed changes is attached in Schedule Nos. 1 - 9. Waiver Northern respectfully requests that the Commission grant any and all waivers of its Regulations that it deems necessary to allow the tariff sheets to become effective April 1, 2016, but, as noted above, Northern respectfully requests that the Commission issue an order by March 18, 2016. Posting Northern has served an electronic copy of this filing upon its customers and interested state regulatory commissions. Kimberly D. Bose, Secretary February 1, 2016 Page 5 of 6 Marked Version In accordance with Section 154.201 of the Commission's Regulations, Northern has submitted a marked version of the proposed tariff changes highlighting new additions and showing deletions by strikeout. Motion In accordance with Sections 154.7(a)(9) and 154.206(c) of the Commission's Regulations, Northern hereby moves to place the tariff sheets referenced herein in effect as of the end of any suspension period ordered by the Commission. Data Processing Requirements Northern is submitting this filing through FERC’s electronic tariff filing process in a FERC-approved format. Kimberly D. Bose, Secretary February 1, 2016 Page 6 of 6 Communication It is requested that all correspondence and communications concerning this filing be served upon each of the following: Laura Demman Vice President, Regulatory and Government Affairs Northern Natural Gas Company 1111 South 103rd Street Omaha, NE 68124-1000 (402) 398-7278 e-mail: Laura.demman@nngco.com Thomas E. Knight Steve Stojic Jennifer Brough Locke Lord LLP 701 8th Street N.W., Suite 700 Washington, D.C. 20001 (202) 220-6922 tknight@lockelord.com steve.stojic@lockelord.com jbrough@lockelord.com Respectfully submitted, /s/ Laura Demman Laura Demman Vice President, Regulatory and Government Affairs Attachments J. Gregory Porter Vice President, General Counsel & Chief Compliance Officer Dari Dornan Senior Counsel Northern Natural Gas Company 1111 South 103rd Street Omaha, NE 68124-1000 (402) 398-7077 greg.porter@nngco.com dari.dornan@nngco.com NORTHERN NATURAL GAS COMPANY PERIODIC RATE ADJUSTMENTS FOR FUEL SUMMARY OF SCHEDULES Schedule No. 1 This Schedule reports the fuel consumed at each facility on a month to month basis sorted by Section 1, 2, 3 and Storage. This Schedule also shows fuel consumed by MID. The source of the total fuel consumed is Northern’s Measurement System (FloCal). Schedule No. 2 This Schedule provides the Annual Throughput described on a Section by Section basis. The source of this Annual Throughput is Northern’s Accounting System. Schedule No. 3 This Schedule calculates the Mainline Fuel Percentages for each Section by dividing the Fuel Consumed from Schedule No. 1 by the Annual Throughput as defined in Schedule No. 2. This Schedule reflects the point exceptions listed on Schedule No. 2. Schedule No. 4 This Schedule reports total Mainline Fuel Retained by Section. Schedule No. 5 This Schedule calculates the Mainline True-up adjustment by Section for the period January 2015 through December 2015 (April-October, 2015 for Section 3 summer fuel). This Schedule reflects the point exceptions listed on Schedule No. 2. Schedule No. 6 This Schedule is a matrix of the Actual Mainline Fuel Percentages adjusted by the True-up Mainline Fuel Percentages to arrive at the Mainline fuel rate percentages to be effective April 1, 2016. Schedule No. 7 This Schedule is a summary of gas by source and disposition used to calculate the unaccounted for percentages. It includes the calculation of the True-up for UAF to be effective April 1, 2016. Schedule No. 8 This Schedule calculates the Storage Fuel Rate for the current period, the Storage Fuel Rate True-up, and the Total Storage Fuel Percentage to be effective April 1, 2016. Schedule No. 9 This Schedule calculates the Market Area Electric Compression charge, including true-up, to be effective April 1, 2016. NORTHERN NATURAL GAS COMPANY PERIODIC RATE ADJUSTMENTS FOR FUEL FUEL CONSUMED DATA - MAINLINE AND STORAGE JANUARY, 2015 - DECEMBER, 2015 MID Sec Zone /1 Mainline Storage S1 MID 2 ML S1 MID 2 ML S1 MID 3 ML S1 MID 3 ML S1 MID 3 ML S1 MID 3 ML S1 MID 3 ML S1 MID 3 ML S1 MID 3 ML S1 MID 6 ML S1 MID 6 ML S1 MID 6 ML S1 MID 6 ML S1 MID 6 ML S1 MID 7 ML S1 MID 7 ML S1 MID 7 ML S1 Total S2 MID 10 ML S2 MID 10 ML S2 MID 10 ML S2 MID 10 ML S2 MID 11 ML S2 MID 11 ML S2 MID 11 ML S2 MID 11 ML S2 MID 11 ML S2 MID 11 ML S2 MID 11 ML S2 MID 11 ML S2 MID 11 ML S2 MID 11 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 13 ML S2 MID 14 ML S2 MID 14 ML S2 MID 14 ML S2 MID 15 ML S2 MID 15 ML S2 MID 15 ML S2 MID 15 ML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML Station Number Station Name 990003 990031 961341 961342 961601 990004 990006 990022 990034 961421 961451 962145 990005 990008 961401 961431 990028 PLYMOUTH SPRABERRY UNMETERED PLYMOUTH BLOW AND PURGE SPRABERRY COMPRESSOR TRANS SPRAYBERRY RECOMP STA TRANS SPRAYBERRY OFFICE FUEL SPRA AND HOBBS PLAINS UNMETERED COYANOSA TO KERMIT 30 BLOW PURGE MITCHELL TO PLY TM BLOW AND PURGE SPRABERRY BLOW AND PURGE SEMINOLE COMP STA.TRAN. BROWNFIELD COMP.STA.-TRANS. PLAINS COMPRESSOR FUEL BROWN TO PLAIN UNMETERED PLAINS MEAS STA 26 BLOW PURGE PLAINVIEW COMP.STA.-TRANS. CLAUDE TURBINE FUEL CLAUDE UNMETERED 961201 990019 990030 990038 960448 960449 960450 960466 961020 961022 961049 961519 961520 990012 961115 961116 961117 961119 961120 961122 961123 961125 961126 961317 961512 990002 990010 990023 961580 961581 990009 901523 961072 961114 990035 961040 961042 961043 961044 961107 961108 961109 961110 SUNRAY FUEL(COMP AUX BLDG) SUNRAY C LINE UNMETERED SUNRAY UNMETERED C LINE UNMETERED BEAVER WAREHOUSE #3 BEAVER EMPLOYEE BLDG. BEAVER OFFICE/TECH BEAVER PLANT BOILER FUEL BEAVER PLANT BLDG 1 ENGINES 14-18 BEAVER PLANT BLDG 2 BEAVER PLANT AUX BU GEN FUEL BEAVER PLANT BUILDING 1 HEATER FUEL BEAVER PLANT BUILDING 2 HEATER FUEL BEAVER PLANT UNMETERED PLAINS TBS HEATER FUEL FOWLER TBS HEATER FUEL CUT STATION HEATER MULLINVILLE PLANT HEATER FUEL MULLINVILLE DOMESTIC FUEL MULL#2 MEAS STA-#2 STA FU MULL#3-AUX&BOILER FUEL MULL#5-#26 UNIT FUEL DODGE CITY TBS HEATER FUEL CORNELSON DEHY FUEL ASHLAND OFFICE WHSE FUEL MULLINVILLE FLASH VAP GAS MULLINVILLE UNMETERED MULLINVILLE TRANS PURGE VENT SUBLETTE COMP NNG START GAS SUBLETTE COMP NNG ENGINE FUEL SUBLETTE UNMETERED GARDEN CITY KS 1C HEATER FUEL HOLCOMB DOMESTIC FUEL COPELAND TBS HEATER FUEL HOLCOMB PLANT TRANS LINE EAST BUSHTON AUX FUEL #2 3 4 & 5 BUSHTON ENGINE ROOM 2 ENG 23 24 25 BUSHTON COMP#3 FUEL STATION BUSHTON 4 FUEL COMPRESSOR STATION MACKSVILLE UNIT 1 STA FUEL MACKSVILLE UNIT 2 STA FUEL MACKSVILLE UNIT 3 STA FUEL MACHSVILLE UNIT 4 STA FUEL Source: Measurement Data warehouse Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15 SCHEDULE 1 Jul-15 Aug-15 Sep-15 Oct-15 6 5 5,925 8,614 86 437 6 5 6,316 12,830 69 1,090 6 5 5,367 12,306 46 828 6 6 11,385 20,972 24 820 6 5 12,617 22,016 6 5 9,646 20,341 4 5 3,968 24,076 4 5 4,409 21,776 4 5 4,449 22,584 188 961 367 15 277 48 96 31,858 40,646 17,301 956 43 10,287 7,459 650 124,417 38,495 68 461 48 152 4,180 40,838 13,829 1,041 104 20,166 16,125 632 117,431 48,506 48 106 54,949 17,215 18,429 1,456 102 11,287 11 252 122,413 68,673 48 579 59,435 2,456 15,582 1,440 101 1,027 13 276 114,170 32,519 48 75 62,384 1,188 15,511 360 79 3 48 99 66,955 41,112 2,426 1,726 92 1,360 49 106 63,749 37,766 1,977 2,323 104 633 42 75 61,441 32,190 2,156 2,451 93 2,284 251 114,731 26,474 48 606 57,678 1,412 10,519 1,330 202 1,090 321 400 104,565 19,480 256 142,494 25,168 257 133,173 23,822 255 128,306 23,523 4 5 5,141 22,994 2 15 1,578 48 374 69,266 45,992 5,522 1,473 92 74 1,937 384 154,901 38,736 474 46 44 199 340 132 19,992 56,024 1,326 46 42 131 627 354 14,061 61,952 469 46 32 66 80 9 2,751 26,700 466 46 26 40 470 -6,023 2 2 491 1603 452 45 2 4 473 46 6 6 513 46 12 52 5,112 22,640 117 7,394 15,145 134 10,459 12,333 13,597 15,321 5,643 23,169 12 15,334 10,573 25 660 347 -191,103 52 38 50 14 134 38,261 5,927 48,241 726 62 604 298 4,200 24 20 36 26 80 44,217 4,487 78,421 573 36 42 132 6,374 6 8 28,092 9 6,745 12 44 16 20,622 3,346 2,926 501 6 28 14 25,011 3,644 6 6,113 2,335 416 6,030 109 852 110 880 111 0 580 0 569 0 767 0 680 1,949 105 1 0 31,897 111 65 348 1 7,054 23,476 45,285 103 14,159 19,631 18,915 140 58 334 1 18,940 65,634 68 54 323 1 11,439 45,497 202 86 14 285 1 2,927 27,318 224 1 9,869 17,769 213 1 11,436 7,843 96 36,228 44,904 43,133 32,244 43,187 37,216 4 1,934 3,076 66 46 52 234 415 168 12,490 32,677 18 737 374 256,355 54 44 48 20 150 24,529 -114 31,345 853 78 85 106 1,789 106 Page 1 of 5 5,958 Nov-15 Dec-15 4 5 8,183 19,461 58 193 4 2 7,530 16,926 82 354 46 95 62,421 27,036 4,807 1,678 58 24 1,679 645 126,393 35,531 1,928 96 65,304 7,079 1,162 2,251 45 981 22 249 104,015 27,104 464 45 66 162 56 206 45 63 306 419 15 9,059 6,344 2,731 24,970 288 390 193 2,026 968 404 5,738 76 63 63 4,637 2,893 2,990 19,605 3,839 46 185 6 26,019 3,052 2,222 198 16 23,811 3,827 213 4 18,943 3,557 2 253 265 14 2 72 13,448 5,674 9 533 707 101 748 110 750 101 1,294 109 661 116 968 648 1,411 118 0 7,384 0 636 0 577 361 613 761 581 220 8 311 601 72 167 604 618 388 129 214 1 2,691 24,449 213 1 16,147 39,182 99 1 16,108 54,909 147 1 14,347 41,227 816 100 1 3,376 40,083 502 4 3 3 1,327 15 46 204 219 1 10,273 16,193 5 5 154 14,187 9,832 7 858 109 Annual 60 58 84,936 224,896 367 5,545 1,578 2,449 2,459 659,620 294,930 109,221 18,485 1,115 49,216 27,567 4,507 1,487,009 408,031 68 6,265 -4,009 347 1,202 1,937 690 118,623 307,848 582 3,401 1,765 134,905 212 165 223 134 652 274,766 49,406 163,219 5,574 291 85 106 18,039 1,844 1 2,037 45,503 680 925 177 2,719 12 124,607 403,580 46,101 2,032 84,650 110,898 99,476 NORTHERN NATURAL GAS COMPANY PERIODIC RATE ADJUSTMENTS FOR FUEL FUEL CONSUMED DATA - MAINLINE AND STORAGE JANUARY, 2015 - DECEMBER, 2015 MID Sec Zone /1 Mainline Storage S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 16 AML S2 MID 8 ML S2 MID 8 ML S2 MID 8 ML S2 MID 9 ML S2 MID 9 ML S2 MID 9 ML S2 MID 9 ML S2 Total S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML S3 MID 17 ML Station Number Station Name 961112 961222 961224 961966 962072 962392 990014 990025 990027 990040 991002 991003 658054 961441 990029 960457 990013 990015 990016 MACKSVILLE UNIT 5 STA FUEL TESCOTT #2 COMP.STA.TRANS TESCOTT PLANT DOMESTIC FUEL MACKSVILLE TBS HEATER FUEL JETMORE TBS (HEATER FUEL) BUSHTON TREATER PLT. FUEL BUSHTON BLOWDOWN PURGE COMPRESSOR TESCOTT DIST TRANS OP MACKSVILLE UNMETERED PLT PURGE VENT MACKSVILLE FLASH VAPOR GAS MACKSVILLE FLARE FROM CONDENSATE TANK MACKSVILLE FUEL GAS HEATER CARGRAY COMPRESSOR FUEL PAMPA TURBINE (KB) FUEL PAMPA TURBINE ROGER MILLS 1 N02 06 UNMETERED ROGER MILLS CO TRANSMISSION 4130 HEMPHILL CO 3 TRANSMISSION UNS 940391 950901 950902 950903 950904 951901 960479 960480 960481 961012 961016 961017 961018 961023 961051 961054 961056 961057 961059 961060 961061 961062 961133 961134 961135 961136 961137 961138 961139 961141 961142 961143 961152 961153 961154 961156 961158 961159 961160 961161 961162 FT. BUFORD/BEARPAW FUEL METER Wrenshall VAPORIZER FUEL-FUEL GAS Wrenshall A TURBINE FUEL GAS Wrenshall B TURBINE FUEL GAS VAPORIZER & BUILDING HEAT GARNER LNG ALBERT LEA COMPRESSOR STATION FUEL ALBERT LEA COMPRESSOR BUILDING HEAT ALBERT LEA COMP FUEL GAS METER BEATRICE # 2 UNITS 19-25 PLANT BEATRICE 3 27TURB FUEL BEATRICE PLANT #1&#2 BOILER FUEL BEATRICE PLANT DOMESTIC GAS SOUTH OMAHA HEATER FUEL CLIFTON COMP FUEL UNIT 27 CLIFTON DOMESTIC FUEL CLIFTON TURB.BOILER CLIFTON BOILER BLDG. #3 (RC 4031) CLIFTON COMP FUEL UNIT 28 CLIFTON COMP FUEL UNIT 29 CLIFTON COMP FUEL UNIT 30 CLIFTON COMP FUEL UNIT 31 OAKLAND COMP #3 ENGINE FUEL OAKLAND COMP STA AUX FUEL OAKLAND #1 DOMESTIC FUEL OAKLAND #2 PIPELINE FUEL OAKLAND #3 DOMESTIC FUEL GUTHRIE CENTER COMP FUEL OAKLAND UNIT #20 BLDG 4 OGDEN AUXILIARY FUEL OGDEN PLANT #2 FUEL OGDEN PLANT #3 FUEL PALMYRA COMPRESSOR BLDG Unit 18 PALMYRA COMPRESSOR BLDG Unit 19 PALMYRA COMPRESSOR BLDG Unit 20 PALMYRA #1 BOILER FUEL PALMYRA OFFICE FUEL PALMYRA WAREHOUSE FUEL PALMYRA FUEL - WORKSHOP BLDG. PAULLINA COMP.STA.-TRANS PALMYRA FUEL - WELDING SHOP Source: Measurement Data warehouse Jan-15 Feb-15 Mar-15 Apr-15 63 21,269 1,532 58 44 3,170 5,954 71 5,226 457 265 12,294 1,463 893 553 99 256 1 585,033 10,752 1,202 20,114 20,450 64 4,324 59,681 11,949 3,483 51,089 15,890 4,901 156 437 93 997 1,409 567 283 19,741 54,858 24,431 4 102 267 2,684 15,105 23,446 3,239 34,504 46,613 4,583 5,320 7,548 2,303 26 164 6 8,083 46 May-15 Jun-15 78,335 1,817 56 34 4,044 5,232 40 2,985 13 33,533 743 28 32 2,547 3,934 35 2,961 32,836 5 331 20 30 5,536 23 114 8 6 2,406 4 2,021 2,308 22 1,704 217 422 10,146 12 530 452 59 303 1 350,027 9,847 10,225 23,509 23,694 137 9,651 74,461 10,662 4,262 83,349 77,074 4,498 159 423 4,891 86 889 1,261 5,809 6,728 55,532 82,975 59,732 3 98 300 2,294 36,242 72,275 3,048 41,742 44,373 5,655 6,278 10,079 2,006 22 138 26 12,360 48 227 319 12,771 24 529 408 59 302 1 510,458 10,407 5,117 26,091 25,628 107 8,867 25,136 9,587 1,138 67,538 35,698 3,933 78 201 726 50 548 1,098 1,003 2,902 34,395 63,313 44,691 8 76 162 2,062 28,236 34,234 1,854 20,024 49,435 3,174 5,618 8,362 1,801 10 71 6 2,546 28 170 15 -46,844 566 72 32 630 1 126,412 11,629 1,138 24,844 24,618 144 4,846 5 11,949 SCHEDULE 1 Jul-15 Aug-15 Sep-15 39 99 2 4 114 17 38 2 2 1,991 28 1,066 1,840 615 1,238 2,355 36 1,146 183 130 272 15 335 15 372 5 2,140 453 4,546 3,169 159 18 531 87 59 352 1 185,229 14,275 3 531 2 45 341 1 84,082 13,008 531 2 46 362 1 112,109 14,294 9 530 6 536 59 438 1 115,936 16,196 59 414 1 176,006 10,209 50,734 2,877 30 72 1 27 298 2 2 5,268 42,698 21,969 4 18 87 1,405 13,689 7,695 1,221 24,579 33,934 3,132 5,564 6,598 673 6 48 10 1,345 14 Page 2 of 5 12,289 12,169 69 3 9 50 1 1 2 9 60 1 31,359 23,326 30 28,865 17,720 12 10 40,011 36 41,098 17 Oct-15 Nov-15 1,482 4 82 2,650 15 1,523 26 582 22 28 1,099 4,809 7 3,261 1,272 8,764 1766 48 38 13,624 9,010 39 3,548 640 5 430 15 966 30 3 531 24 59 355 1 176,631 14,116 239 18 534 2 59 431 1 157,724 16,409 4 329 348 89 2,123 4,114 60 18 46,281 21 1,025 63 129 42 519 498 59 318 1 163,390 16,469 2,833 17,255 16,998 186 5,629 38,308 192 383 47,994 1,171 6,803 127 323 40 444 829 62 712 667 7,830 11,995 11 70 165 1,622 11,999 10,674 4 110 273 3,296 6,915 2,264 29,919 36,041 1,940 3,003 3,225 1,367 14 68 10 65 26 2,825 18,944 41,791 3,788 3,430 1,494 2,564 24 143 18 456 48 75 479 51,848 105 3 9 27 3 244 21 3 6 9 13 6 11,783 1,352 2 24 45 830 7,746 3 45 22,015 35,096 9,469 7,412 3 9 8 2,742 4 12 3 8 25,528 39,968 461 2,501 4,925 7 4 6 6,318 39,622 2,211 5,271 4,276 19 13 1,557 2,427 6 2 9 1,848 5,354 7 4 12 2,379 5,918 715 2 37,634 43,640 6,358 3,944 6,645 33,740 35,778 5,149 6,159 6,941 2 2 10 6 30 11 435 170 2 8 6 2 Dec-15 4 12 3,911 10,166 27,208 2 26 66 365 25,358 7,482 835 43,018 42,156 1,398 2,027 4,239 4 12 14 22 12 Annual 59,075 142,096 7,067 242 218 24,489 44,629 1,365 31,225 3,169 4,428 1,231 -11,633 1,598 6,761 2,100 694 4,502 12 2,743,037 157,611 20,758 124,431 123,905 873 35,933 201,766 44,399 9,284 563,492 130,042 24,040 631 1,681 5,875 375 3,590 5,565 7,844 10,106 118,847 279,770 209,833 58 538 1,404 14,561 153,587 145,850 15,341 337,965 488,447 37,849 58,584 71,744 10,714 108 646 106 24,899 228 NORTHERN NATURAL GAS COMPANY PERIODIC RATE ADJUSTMENTS FOR FUEL FUEL CONSUMED DATA - MAINLINE AND STORAGE JANUARY, 2015 - DECEMBER, 2015 MID Sec Zone /1 Mainline S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML MLSTO1 ML ML ML ML ML ML ML ML ML MLSTO1 MLSTO1 MLSTO1 MLSTO1 MLSTO1 ML MLSTO1 MLSTO1 ML ML MLSTO1 ML ML ML ML ML ML ML ML ML ML ML ML MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 MID 17 Storage Station Number 961163 961165 961166 961167 961168 961169 961170 961171 961172 961175 961176 961177 961178 961181 961230 961231 961232 961233 961234 961235 961236 961237 961243 961246 961248 961251 961261 961268 961306 961381 961382 961461 961471 961561 961562 961565 961961 962434 964003 964004 964096 964097 964101 969044 990000 990011 990017 990018 990021 990024 990032 990037 990046 990052 990053 990054 990055 990056 990057 990058 990059 Station Name PALMYRA FUEL - EQUIPMENT BLDG. PALMYRA COMPRESSOR BLDG Unit 21 PALMYRA COMPRESSOR BLDG Unit 22 PALMYRA COMPRESSOR BLDG Unit 23 PALMYRA COMPRESSOR BLDG Unit 24 PALMYRA COMPRESSOR BLDG Unit 25 PALMYRA COMPRESSOR BLDG Unit 26 PALMYRA COMPRESSOR BLDG Unit 27 PALMYRA COMPRESSOR BLDG Unit 28 PALMYRA COMPRESSOR BLDG Unit 29 HOMER COMPRESSOR STATION FUEL FREMONT COMPRESSOR STATION FUEL WILLOW LAKE COMPRESSOR STATION SO SIOUX CITY COMP STA-TRANS VENTURA DOMESTIC FUEL VENTURA COMPRESSOR STA TRANS 11 VENTURA COMPRESSOR STA TRANS 12 VENTURA COMPRESSOR STA TRANS 13 VENTURA COMPRESSOR STA TRANS 14 VENTURA COMPRESSOR STA TRANS 15 VENTURA COMPRESSOR STA TRANS BF 16 VENTURA A LINE HEATER FUEL WATERLOO COMPRESSOR FUEL EARLVILLE CSO STATION-EAST LEG FARIBAULT MN COMPRESSOR STATION FARMINGTON COMP FUEL UNITS 1-7 WATERLOO COMP.STA.-TRANS. GARNER CONTROLLER GAS CUNNINGHAM UGS LIQ.PLT FUEL NO.BRANCH COMP.STA.-TRANS HUGO COMP FUEL CARLTON COMP ENGINE FUEL 1&2 OWATONNA COMP STA TRANS GALENA COMPRESSOR STATION GALENA COMP. AUXILIARY BELLVILLE COMPRESSOR PLANT CARLTON WHSE FUEL * CLARK S.D. WAREHOUSE MACKS 1-CUNN STO SER MACKS 5-CUNN STO SER CUNN STORAGE COMP.UNIT #8 FUEL CUNN STORAGE COMP.UNIT #9 FUEL CUNNINGHAM UGS - PLANT OGDEN REDFIELD FUEL TRANS UNIT 7 CUNNINGHAM UGS FIELD SEPERATORS CUNNINGHAM UNMETERED GATH HUBBARD COMPRESSOR UNMETERED EARLVILLE COMPRESSOR UNMETERED CUNN UNMETERED TRANS CLIFTON DIST TRANSMISSION GARNER LNG CLIFTON DISTRICT TRANS SOUTH ALBERT LEA COMPRESSOR UNM GAS LOSS CARLTON GAS UNMETERED WRENSHALL UNMETERE 504 OWATONNA UNMETERED VENT 504 FARIBAULT COMPRESSOR UNS SOUTH OMAHA UNMETERED T OAKLAND UNMETERED GAS SO SIOUX CITY UNMETERED VENTURA SOUTH UNMETERED Source: Measurement Data warehouse Jan-15 Feb-15 Mar-15 Apr-15 38 4,176 6,654 6,109 4,093 7,903 38,956 8,808 12 4,698 6,813 5,230 7,201 7,775 33,190 20,968 5,651 328 32 4,882 3,914 8,758 10,357 6,823 77,756 608 7,765 18,247 3,966 746 8,634 23,218 435 91 8,078 27,714 1,037 34 236 366 1,381 1,950 3,910 10,032 17,295 4,185 826 50,363 15,919 94,390 25,337 888 328 299 25,085 19,996 10,788 46,724 24,881 327 1,550 257 44 142 386 4,488 5,782 6,260 23,968 26,290 4,036 649 63,375 24,244 86,629 26,103 156 280 278 17,554 19,609 17,261 56,757 23,285 278 2,684 319 30 117 203 2,674 2,883 4,763 20,209 21,025 3,047 691 37,252 7,599 90,679 27,861 126 376 279 24,998 22,132 16,097 32,538 21,186 296 10,657 64 18 56 140 1,761 1,244 1,830 6,519 14,081 1,580 749 33,118 21 57,048 20,661 96 272 246 17,974 8,178 6,002 5,433 24,565 75 22,866 232 8 5,088 4,864 2,419 5,436 19 131 516 1,445 197 62 341 2,344 4 4,411 740 8,155 46 2,713 4,499 2,349 1,267 1,530 2,957 3,454 2,443 5,704 11 138 497 480 273 69 148 3,289 313 3,937 298 6,848 52 2,542 3,840 1,480 1,022 1,404 690 922 2,314 2,524 20 267 445 721 157 68 183 3,968 197 5,046 421 8,193 51 2,505 4,305 2,424 1,261 May-15 6 3,513 3,214 4,160 5,102 8,136 8,978 3,933 3,729 1,982 4,837 14 1,170 3,836 202 69 172 2,829 91 2,330 261 5,078 166 1,279 3,376 956 1,040 Page 3 of 5 Jun-15 SCHEDULE 1 Jul-15 Aug-15 4 4,891 2,111 1,252 2,101 3,699 736 1 7,838 28,056 864 25 2,461 5,127 25,818 114 5 1,335 15,156 297 12 46 6 6 4 8 143 2 2,420 2,461 450 1,014 537 305 6 104 22,248 44,354 897 74,040 13,592 11,243 23,150 12 275 246 11,806 11,132 54 312 221 10,359 23,309 42 304 242 6,958 2 2,273 1,914 1,625 4,924 4 175 56 93 165 66 105 3,082 4 1,884 316 6,333 53 1,148 3,346 680 735 156 236 1,234 305 1,879 29,724 6 6 2 6 4 8 48 1,607 6,845 48 21,403 152 8 Sep-15 24 3 9 7,308 54 21,096 4 28 14,302 36 20,478 22,469 1,228 19,994 42 296 222 4,588 486 22,304 27 23,125 3,907 2,510 1,611 3,170 2,142 113 1,830 1,895 27,698 527 1 Oct-15 4 1,619 5,390 5,263 3,573 6,681 26,096 8,382 1 27,971 6 315 16 54 4 6 14 15 34 56 56 3 75 346 2,896 787 28,135 1,163 299 28,549 6 232 237 6,315 1 37 117 12,703 18 26,839 16 38,356 2,266 1,460 26,103 30 240 267 15,068 48 2 11,203 1,198 6 23,978 200 2 1,991 1,565 1,080 3,329 3 475 57 127 142 66 357 1,287 265 1,843 408 2,744 50 1,481 1,960 712 507 6,158 6,337 609 3,327 449 4,761 5,146 357 0 155 57 470 301 69 74 5,638 2 2,778 563 2,765 52 1,450 2,249 689 582 1 157 55 28 166 66 372 1,235 4 2,153 182 10,166 117 1,521 2,325 669 605 45 2,196 3,258 1,337 276 104 158 4 80 326 66 365 1,557 136 2,258 276 2,776 240 4,180 2,505 681 628 1,647 1,271 680 878 3 340 14 316 364 64 78 2,360 4 2,302 269 4,668 334 2,365 3,109 2,536 850 Nov-15 Dec-15 18 2,831 4,393 1,534 1,019 3,372 50,524 1,129 7,564 13,921 28 39 39 90 223 115 194 692 806 2,293 2,249 511 23,423 32 4,693 3,240 4,627 2,002 223 28,504 7,590 1,276 22,714 801 93 410 123 254 1,841 959 1,790 9,174 12,343 3,422 692 26,882 31,174 17,920 126 232 279 8,011 3,625 9,130 13,970 23,449 177 4,808 84 2 79,214 16,909 180 296 312 7,888 6,579 15,988 18,723 32,399 318 1,809 24 2 690 306 1,182 1,114 10 291 37 133 95 63 78 2,549 4 2,465 304 5,240 125 2,315 3,562 -289 889 1,487 1,901 3,637 9 481 245 530 259 64 893 3,029 269 2,543 284 7,124 182 2,457 3,660 2,067 1,057 Annual 148 39,887 44,635 40,964 37,836 45,614 264,117 30,809 49,513 281,205 13,732 1,368 764 808 1,698 12,274 13,031 19,410 71,110 96,608 19,315 4,222 360,110 180,849 442,121 267,028 1,758 3,443 3,128 156,604 80,170 75,308 187,595 214,425 1,660 181,293 1,352 114 3,372 5,579 34,933 32,746 18,604 28,850 94 3,938 1,983 8,259 2,647 792 3,166 33,167 1,293 33,950 4,322 70,090 1,468 25,956 38,736 14,954 10,443 NORTHERN NATURAL GAS COMPANY PERIODIC RATE ADJUSTMENTS FOR FUEL FUEL CONSUMED DATA - MAINLINE AND STORAGE JANUARY, 2015 - DECEMBER, 2015 MID Sec Zone /1 Mainline S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 MID 17 S3 Total ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML ML 990060 990061 990062 990063 990064 990065 990066 990067 990068 990069 990070 990071 990072 990073 990074 990075 990076 990077 990078 990079 990080 990081 990082 990083 990084 990085 990086 990087 990088 990089 990090 990091 990092 990093 990095 990097 990098 990099 990100 990101 990103 990104 NEGUANEE UNMETERED HTR AUX FUEL 5 WATERLOO DOWNSTREAM HEATER FUEL FARMINGTON UNMETERED VENT RC 4008 NORTH BRANCH HEAT AUX FUEL RC 4004 NORTH BRANCH UNMETERED VENT RC4004 NORTH BRANCH UNMETERE HEAT AUX RC40 POPPLE CREEK UNMETERED VENTURA NORTH UNMETERED PLATTEVILLE UNMETERED TBS HEATERS CLARK SD UNMETERED 547 VENTURA ANALYZER PURGE GAS OGDEN GAS UNMETERED 504 RC4010 OGDEN UNMETERED DETAIL 547 RC4010 WATERLOO DOWNSTREAM PIPELINE GAS LO LACROSSE BRANCHLINE COMPRESSOR SPRING GREEN COMPRESSOR UNMETERED HUGO MN COMP BLOW DOWN BEATRICE UNMETERED OAKLAND UNMETERED GAS USES WATERLOO COMPRESSOR UNMETERED WELCOME NORTH UNMETERED GAS VENTED NORTH BRANCH UNMETERED VENTED RC400 WILLMAR UNMETERED VENTED RC4290 PAULLINA UNMETERED VENTED GAS RC 42 PALMYRA UNMETERED PIPELINE RC4024 OGDEN UNMETERED VENTED RC4012 HARRISBURG UNMETERED PLATTEVILLE UNMETERED VENTED RC4415 PALMYRA UNMETERED PIPELINE RC4029 WELCOME MEAS STA 1 NB INTER UNS LACROSSE SYSTEM ZONE 5 MAINLINE HOOPER SOUTH WATERLOO UPSTREAM HEATER FUEL WELCOME SOUTH UNS SECTION 3 SEG 2 BOTTLE TRUCK SOUTH SIOUX CITY PIERZ COMPRESSOR UNMETERED ALEXANDRIA COMPRESSOR UNMETERED ST CLOUD PIPELINE UNMETERED OGDEN UNMETERED TBS HEATERS RC4012 WATERLOO UPSTREAM PIPELINE UNS HOMER COMPRESSOR STATION USN FREMONT COMPRESSOR STATION UNS MLSTO1 STO STO MLSTO1 MLSTO1 STO STO STO STO STO STO MLSTO1 MLSTO1 MLSTO1 STO STO MLSTO1 MLSTO1 961306 964001 964002 964003 964004 964005 964006 964013 964014 964042 964051 964096 964097 964101 969042 969043 990000 990011 CUNNINGHAM UGS LIQ.PLT FUEL REDFIELD LAGOON SEPARATOR EAST VENT REDFIELD LAGOON SEPARATOR WEST VENT MACKS 1-CUNN STO SER MACKS 5-CUNN STO SER CRASE 1 GAS LIFT MAHER 5 GAS LIFT REDFIELD #1 COMP. FUEL WEST RUN REDFIELD DEHY FUEL REDFIELD H2S TREATER FUEL REDFIELD DOMESTIC FUEL CUNN STORAGE COMP.UNIT #8 FUEL CUNN STORAGE COMP.UNIT #9 FUEL CUNNINGHAM UGS - PLANT REDFIELD FUEL UNIT 5 REDFIELD FUEL UNIT 6 CUNNINGHAM UGS FIELD SEPERATORS CUNNINGHAM UNMETERED GATH Storage Station Number Station Name Source: Measurement Data warehouse Jan-15 Feb-15 Mar-15 Apr-15 May-15 4,716 1,524 15,839 578 1,234 34,697 12 5,186 2,965 1,104 7,659 1,761 15,029 1,205 1,136 39,736 65 7,040 3,012 1,059 4,868 1,229 11,161 477 1,275 27,250 110 4,026 2,180 822 3,157 1,348 7,454 211 1,241 13,494 10 3,240 1,448 597 3,084 702 4,718 119 1,171 8,774 5 3,154 1,074 538 3,153 117 1,193 201 110 4,485 1,225 1,128 508 5,582 392 9,039 2,344 868 2,176 7,096 3,132 2,291 32 2,357 918 3,371 3,632 3,366 111 3,116 143 109 4,316 1,253 1,239 642 5,534 385 9,029 2,649 1,877 2,055 5,933 3,140 1,453 32 2,371 925 3,578 3,520 3,167 73 2,115 124 109 3,173 1,282 939 551 4,039 392 6,796 1,841 869 22,854 5,100 2,904 2,073 32 1,757 647 2,853 2,826 3,514 43 2,661 83 1,209 604 740 3,468 3,055 416 5,564 1,853 752 9,570 3,556 3,134 2,950 32 1,216 176 2,236 2,003 3,420 21 1,186 95 18 29 1,370 664 776 2,347 609 4,052 1,582 586 2,077 3,314 3,301 2,257 32 983 175 2,201 1,781 8 18 3,148 875 221 8 18 2,671 2,113 222 720,555 306 4,714 15 49 4 9 9 14 6,344 6,256 4,873 5,919 5,437 5,875 219 220 220 253 76 80 1,096,081 1,535,113 1,143,251 373 347 347 3,069 3,054 2,283 7,826 2,302 4,391 1,752 394 376 38,086 9,229 2,636 718 861 1,150 2,885 39,640 25 333 558 710 28,034 6,538 2,337 944 6,345 6,067 3,018 24,453 4,294 23 163 Jun-15 SCHEDULE 1 Jul-15 3,024 621 3,436 63 1,579 6,363 70 2,599 943 474 Aug-15 Sep-15 1,923 2,025 2,892 8,007 58 1,500 6,467 5 2,571 953 451 3,856 9,195 1,150 7,494 5 2,583 957 444 3,509 80 1208 6,994 5 2,541 934 487 Oct-15 4,287 902 7,826 246 1,151 10,232 65 6,690 1,375 590 3,513 3,703 3,313 3,247 2,783 1,981 104 2,176 94 1,904 83 3,293 91 134 783 589 566 2,217 19,655 3,394 1,511 442 2,073 2,282 6,992 1,082 32 902 178 2,634 1,595 495 595 3,435 699 2,691 400 3,495 970 718 2,083 723 2,964 4,215 32 872 178 2,035 1,789 263 815 591 1,014 2,555 411 4,074 1,608 410 4,086 747 3,066 3,754 32 860 172 1,986 2,132 28 18 1,491 538 223 433,987 307 46 18 1,489 584 224 102 41 373,875 275 26 691 1,924 1,794 2,342 11,623 3,613 1,761 427 2,075 1,282 4,102 2,310 32 880 171 1,878 1,697 3 3 41 1,877 528 1,147 2,258 145 110 494 998 697 1,153 3,010 521 5,313 1,606 466 2,336 3,474 3,114 3,374 32 1,121 169 2,254 5,794 304,750 302 20 387,876 277 20 394,481 296 17 930 1,448 4,150 559 56 2,738 19,023 15 239 135 5,938 6,418 445 32,796 22,493 38 153 30 4,063 1,668 344 33,805 79 1,909 199 256 17,804 4,931 2,335 730 3,688 4,308 3,047 2 645 5,086 3,018 1,818 198 4,906 4,650 2,473 1,771 1,427 175 2,835 2,388 2,026 2,099 1,343 118 2,484 1,951 1,347 5,671 14 173 4,381 17 1,459 3,771 4 219 3,439 3 592 Page 4 of 5 16 18 1,571 592 1,152 49 23 2,787 1,163 221 25 Nov-15 5,645 1,116 8,300 510 1,158 19,838 4,125 1,828 789 6 2,653 90 1,342 116 110 1,542 1027 860 795 3,462 409 6,048 1,672 820 2,017 4,889 3,310 2,499 32 1,322 901 2,502 2,654 548,436 332 9 3,862 4,276 1,132 24 19 528,826 348 21,175 402 563 88 2,055 1,586 848 36,733 1,589 4 423 16,164 6,147 1,198 262 861 382 1,474 28,731 2,061 12 363 Dec-15 5,886 1,365 10,232 550 1363 27,185 8 4,325 2,201 1,031 2,612 128 1,357 179 109 1,236 1226 1,050 1,153 4,547 411 7,746 2,018 823 2,014 7,528 3,842 2049 32 1,632 1,179 2,784 3,465 4 9 6,649 3,739 1,145 95 714,320 389 4,078 11,356 286 6 1,194 1,237 143 7,680 7,903 759 660 3,506 1 193 1 196 197 23,889 9,068 2,740 516 1,855 2,372 4,537 35,694 12 600 Annual 49,166 10,568 99,367 13,292 15,166 208,524 360 48,080 19,870 8,386 6 38,444 583 24,582 1,458 675 17,402 11,869 13,856 13,119 41,381 35,624 68,163 21,415 9,058 55,416 45,924 43,001 30,307 384 16,273 5,789 30,312 32,888 3 230 204 43,018 31,639 6,346 499 256 8,181,551 3,899 12,484 32,984 4,206 6,958 1,153 2,273 191,760 44,450 18,026 4,057 43,571 40,843 23,203 232,512 28,791 116 4,911 NORTHERN NATURAL GAS COMPANY PERIODIC RATE ADJUSTMENTS FOR FUEL FUEL CONSUMED DATA - MAINLINE AND STORAGE JANUARY, 2015 - DECEMBER, 2015 MID Sec Zone /1 Mainline ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST MID 17 ST Total Grand Total STO MLSTO1 STO STO STO STO Foot notes 1/ Storage Station Number 990020 990021 990047 990048 990049 990050 Station Name Source: Measurement Data warehouse Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15 SCHEDULE 1 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 Annual LYONS UNMETERED CUNN UNMETERED TRANS REDFIELD ST PETER PLANT UNMETERED REDFIELD MT SIMON PLANT UNMETERED REDFIELD MT SIMON UNMETERED REDFIELD ST PETER UNMETERED 20 13 10 195 246 340 253 509 501 512 510 1,286 1,134 741 740 16,519 6,090 5,576 3,101 11,417 6,400 6,184 5,977 139,279 103,578 65,452 44,264 1,944,810 2,106,149 1,841,574 1,005,401 205 515 740 677 1,801 19,164 753,111 8 178 513 793 540 1,949 18,562 581,084 456 375 750 751 1,250 1,980 30,594 589,947 11 207 509 1369 122 379 72789 709774 1001 407 492 1829 148 155 69992 768785 1085 453 491 1326 36 171 69360 949328 1,092 118 489 1,310 2,987 4,279 68,278 881,221 1,818 5,514 323 3,300 493 6,284 745 12,764 23,062 60,108 14,087 54,779 137,634 838,946 1,119,359 13,250,543 Total Mainline Fuel Total Storage Fuel Total Fuel 1,805,531 2,002,571 1,776,122 961,137 139,279 103,578 65,452 44,264 1,944,810 2,106,149 1,841,574 1,005,401 733,947 19,164 753,111 562,522 18,562 581,084 559,353 30,594 589,947 636,985 72,789 709,774 698,793 69,992 768,785 879,968 69,360 949,328 812,943 68,278 881,221 981,725 12,411,597 137,634 838,946 1,119,359 13,250,543 S1 = Section 1 Mainline Facility Fuel. S2 = Section 2 Mainline Facility Fuel. S3 = Section 3 Mainline Facility Fuel. ST = Storage Fuel. Page 5 of 5 Northern Natural Gas Company Periodic Rate Adjustments for Fuel Summary of Annual MID 1-17 Mainline Throughput Mid to Mid Schedule No. 2 Annual Transactions from January, 2015 - December, 2015 for Mainline Fuel Page 1 of 2 Receipt MID D1 D2 D3 D4 D5 D6 D7 D7B D8 D9 D10 D11 SECTION 1 - SECTION 1 R01 R02 R03 R04 R05 R06 R07 R7b - - - - 32,492,596 640,653 241,362 40,792,545 - 1,639,534 429,105 545,426 - 92,792 354,251 - D12 D13 D14 D15 1,787,491 8,390,893 2,091,127 3,995,372 112,998 2,360 906,773 9,683,335 33,239 2,498,761 - - - - - SECTION 2 - SECTION 1 - - - - - 14,424 26,539 381,288 79,197 74,644 47,878 - 52,998 40,000 17,999 229,254 7,500 7,499 9,140 10,044 MID 8-16A Rec=MID 16B 2,413,658 185,903 901,033 59,998 4,391,758 167,238 - 452,305 98,269 12,121 - 47,981 162,134 14,694 - 86,200 3,409,266 193,507 44,528 - SECTION 3 - SECTION 1 R17 - - - - - 50,378 901,967 - - - 33,334 180,803 110,284 2,385,525 4,013,660 - - SECTION 1 SECTION 3 - - - 74,668,604 Source: Northern's Accounting System. 2,736,587 558,040 6,781,137 1,652,230 4,453,114 13,453,102 26,339,583 - - - - - - - - 16,643,678 16,682,700 - 562,695 224,809 3,733,501 952,345 - 6,723,606 - - 43,700,323 20,796,216 6,818,842 61,639,457 112,998 2,360 - SECTION 2 SECTION 3 - - - 543 126,204 355,366 135,121 1,587 105,014 404,240 96,813 15,870,118 44,621,879 69,730,730 9,304,936 28,707,660 6,366,566 759,219 MID 7B-16A Rec=MID 16B 13,421,844 175,361,108 - - - 217,584,844 217,584,844 19,229,065 44,703,899 74,056,200 10,537,509 33,276,658 10,612,160 759,219 217,752,082 SECTION 3 SECTION 3 - Total MID 8-16A MID 16B SECTION 3 - SECTION 2 - Annual Total D17 SECTION 2 - SECTION 2 R7b - D16b SECTION 1 - SECTION 2 106,730,613 R08 R09 R10 R11 R12 R13 R14 R15 R16a R16b D16a 617,234 607,654 201,700,691 676,288,687 676,288,687 676,288,687 893,873,531 1,220,285,675 Northern Natural Gas Company Periodic Rate Adjustments for Fuel Summary of Annual MID 1-17 Mainline Throughput Mid to Mid Schedule No. 2 Annual Transactions from January, 2015 - December, 2015 for Mainline Fuel Page 2 of 2 Point Exceptions: Throughput from these receipt points to MIDs 1-7 are excluded from Section 2 fuel derivation on Schedule 3 (Tariff Sheet No. 54A). 150 MID 16 A NNG/Williams Barton 475 & 62997 MID 8 Westar/NNG Carson 179 & 78287 MID 13 ANR/NNG Greensburg 60667 & 78284 MID 8 NNG/TW Gray ITE 17,488 61491 MID 9 NNG/Warren Canadian 71214 & 78292 MID 16 A NNG/KN Tescott Pony Express 71363 MID 9 NNG/Bingham Hemphill 71394 MID 9 NNG/Crescendo Hemphill 34,039 71432 MID 16 A MCMC/NNG Rice County ITE 78441 & 78883 MID 13 Cheyenne Plains Interconnect 499,987 78643 & 78902 MID 8 Enbridge-Pampa Interconnect 2,767,490 3,319,004 Source: Northern's Accounting System. Point Exceptions: Throughput from MIDs 1-7 to these delivery points are excluded from Section 2 fuel derivation on Schedule 3. Delivery 475 MID 8 Westar/NNG Carson 4891 MID 8 WTG-Lark Farm Tap 60667 MID 8 NNG/TW Gray ITE 35402 MID 8 Damson/Crawford 35706 MID 8 Phillips/NNG Carson 55610 MID 8 North Texas Gas/NNG Farm Tap 56111 MID 8 Cabot/NNG Bryan Carson 0 Northern Natural Gas Company Periodic Rate Adjustments for Fuel Calculation of Base Mainline Fuel Percentages Schedule No. 3 Annual Transactions from January, 2015 - December, 2015 for Mainline Fuel Mainline Fuel (A) Section 1 (1-7) Section 2 (8-16a) Section 2 (16b) Section 3 (17) Total (B) Section 1 (1-7) 106,730,613 4,391,758 167,238 111,289,609 Section 1 Section 2 Section 3, Apr-Oct Total Fuel Consumed 1,487,009 2,743,037 3,163,960 7,394,006 (C ) Section 2 (8-16a) 13,421,844 13,421,844 2/ 3/ 4/ Throughput 137,629,192 216,195,289 438,498,426 792,322,907 Backup: 1 Section 1-1 Section 2-1 Section 2(16b)-1 Section 3-1 Section 1-2 Section 1-2(16b) Section 1-3 2 Section 2-1 Section 2(16b)-1 Section 3-1 Section 1-2 Section 2-2 Section 2(16b)-2 Section 3-2 Section 1-2(16b) Section 2-2(16b) less exempt POIs Section 1-3 Section 2-3 3 Section 1-3 Section 2-3 Section 2(16b)-3 Section 3-3 1/ 2/ 3/ 4/ 5/ 6/ 7/ 8/ Throughput 106,730,613 4,391,758 167,238 26,339,583 137,629,192 Section 1 (1-7) Section 2 (8-16a) Section 2 (16b) Section 3 (17) Total 5/ 6/ 7/ (E) Section 3 (17) 217,584,844 676,288,687 893,873,531 (F) Total 133,070,196 193,174,710 217,752,082 676,288,687 1,220,285,675 1/ Percentage 1.08% 1.27% 0.72% Matrices linked to numbers in Column B Section 1 (1-7b) Section 2 (8-16a) Section 2 (16b) Section 3 (17) 106,730,613 26,339,583 4,391,758 167,238 111,289,609 - 26,339,583 - Total 133,070,196 4,391,758 167,238 137,629,192 5/ 5/ Throughput 4,391,758 Section 1 (1-7b) Section 2 (8-16a) less exempt POIs 13,421,844 Section 2 (16b) Section 3 (17) Total 26,339,583 175,361,108 (3,319,004) 8/ 216,195,289 6/ Throughput 217,584,844 676,288,687 893,873,531 (D) Section 2 (16b) 26,339,583 175,361,108 201,700,691 Section 1 (1-7b) Section 2 (8-16a) 4,391,758 13,421,844 4,391,758 13,421,844 Apr-Oct Section 3 (17) Section 1 (1-7b) Section 2 (8-16a) Section 2 (16b) Section (17) Total See Schedule No. 2. See Schedule No. 1, subtotal S1 for MIDs 1-7. See Schedule No. 1, subtotal S2 for MIDs 8-16B. See Schedule No. 1, subtotal S3 for MID 17, April-October. Section 1 Throughput. Section 2 Throughput. Section 3 April - October Throughput. See Point Exceptions on page 2 of Schedule No. 2. 91,837,382 346,661,044 438,498,426 Section 2 (16b) 26,339,583 175,361,108 (3,319,004) 198,381,687 Nov-Mar (not used) Section 3 (17) 125,747,462 329,627,643 455,375,105 Section 3 (17) - - Total Section 3 (17) 217,584,844 676,288,687 893,873,531 Total 26,339,583 193,174,710 (3,319,004) 216,195,289 /6 /7 Northern Natural Gas Company Periodic Rate Adjustments for Fuel Allocate Retained Fuel by Section Schedule 4 Annual Transactions from January, 2015 - December, 2015 for Mainline Fuel Apr-Oct Fuel % Charged: Rec Del Fuel Retained W/ Summer(April-October) Market fuel rate Section 1 Section 1 688,025 Section 1 Section 2 Section 1 Section 2 (16b) 202,282 Section 2 Section 1 30,388 Section 2 Section 2 149,584 Section 2 Section 2 (16b) 1,657,049 Section 2 (16b) Section 1 Section 2 (16b) Section 2 Section 2 (16b) Section 2 (16b) /2 14,158 Section 2 (16b) Section 3 569,182 Section 3 Section 1 Section 3 Section 2 Section 3 Section 2 (16b) Section 3 Section 3 2,142,694 Total Summer 0.0097 0.0289 0.0289 0.0289 0.0192 0.0192 0.0097 0.0192 0.0192 0.0062 0.0097 0.0192 0.0192 0.0062 0.0097 0.0192 Section 1 Section 2 0.0097 0.0097 0.0097 0.0097 0.0062 Market 0.0192 0.0192 0.0192 0.0192 0.0192 0.0097 0.0192 0.0192 0.0062 0.0097 0.0192 0.0192 0.0062 5,453,362 W/Jan-Mar & Nov-Dec Market Fuel rates Section 1 Section 1 Section 1 Section 2 Section 1 Section 2 (16b) Section 2 Section 1 Section 2 Section 2 Section 2 Section 2 (16b) Section 2 (16b) Section 1 Section 2 (16b) Section 2 Section 2 (16b) Section 2 (16b) /2 Section 2 (16b) Section 3 Section 3 Section 1 Section 3 Section 2 Section 3 Section 2 (16b) Section 3 Section 3 Reverse fuel from Sec 2 exceptions Move fuel to Section 1 /3 Total Winter Annual Total Fuel% 422,927 545,400 34,857 91,306 1,340,260 1,624 1,624 1,648,055 4,237,527 -34,293 34,293 8,323,580 0.0097 0.0289 0.0289 0.0289 0.0192 0.0192 0.0097 0.0192 0.0192 0.0062 0.0097 0.0192 0.0192 0.0062 0.0289 0.0097 0.0097 0.0097 0.0097 0.0097 0.0192 0.0192 0.0192 0.0192 0.0192 0.0097 0.0192 0.0192 0.0062 0.0097 0.0000 0.0192 0.0192 0.0097 0.0097 0.0192 0.0062 13,776,942 1/ Section 3 fuel retained is calculated seasonally. Winter fuel retained is not used at this time. 2/ Reflects fuel retained on out-of-balance deliveries to 16B and from 7B to 16B. 3/ Only Section 1 fuel is retained for Section 1-2 or Section 2-1 paths described on page 2 of Schedule 2. MID 1-7 MID 8-16 MID 17 /1 Total Section 1 Section 2 Market Retained 688,025 0 67,894 10,199 0 0 0 0 0 0 0 0 0 0 0 0 134,388 20,189 149,584 1,657,049 0 0 14,158 0 0 0 0 0 0 0 0 0 0 0 0 0 0 569,182 0 0 0 2,142,694 688,025 0 202,282 30,388 149,584 1,657,049 0 0 14,158 569,182 0 0 0 2,142,694 766,118 1,975,368 2,711,876 5,453,362 422,927 0 183,058 11,699 0 0 1,624 0 0 0 0 0 0 0 -11,510 34,293 642,091 0 0 362,342 23,158 91,306 1,340,260 0 0 1,624 0 0 0 0 0 -22,783 0 1,795,907 0 0 0 0 0 0 0 0 0 1,648,055 0 0 0 4,237,527 0 0 5,885,582 422,927 0 545,400 34,857 91,306 1,340,260 1,624 0 1,624 1,648,055 0 0 0 4,237,527 -34,293 34,293 8,323,580 1,408,210 3,771,274 8,597,458 13,776,942 Northern Natural Gas Company Periodic Rate Adjustments for Fuel Mainline Fuel True-up Schedule No. 5 Annual Transactions from January, 2015 - December, 2015 for Mainline Fuel Mainline Fuel Section 1 Section 2 Apr-Oct Section 3 Total Actual Mainline Fuel Consumed 1/ 1,487,009 2,743,037 3,163,960 7,394,006 Actual Mainline Fuel Retained 2/ less True-up Under(Over) Recovered 3/ 1,408,210 (173,538) 3,771,274 1,064,765 2,711,876 (520,855) 7,891,360 370,372 Actual Mainline Fuel Retained Related to Consumed 1,581,748 2,706,509 3,232,731 7,520,988 Under(Over) Recovered Total Throughput Applicable to Mainline Fuel 4/ True-up Adjustment Due (Shipper)Northern (94,739) 137,629,192 -0.07% 36,528 216,195,289 0.02% (68,771) 438,498,426 -0.02% 1/ See Schedule No. 1. 2/ See Schedule No. 4. 3/ 2014 Mainline Fuel True-up as stated on Schedule No. 5 of Northern's January 29, 2015 fuel filing in Docket No. RP15-389-000. 4/ See Schedule No. 3. (126,982) Northern Natural Gas Company Periodic Rate Adjustments for Fuel Mainline Fuel Effective April 1, 2016 Schedule No. 6 Base Mainline Fuel Percent 1/ Section 1 Section 1 1.08% Section 2 2.35% Apr-Oct Section 3 3.07% Section 1 1.08% Section 2 2.35% 4/ 1.27% 1.99% Section 2 1.27% Section 3 1.08% 1.27% 0.72% Section 3 0.72% True-up Mainline Fuel Percent 2/ Section 1 Section 1 -0.07% Section 2 -0.05% Apr-Oct Section 3 -0.07% Section 1 -0.07% Section 2 -0.05% 0.02% 0.00% Section 2 0.02% Section 3 -0.07% 0.02% -0.02% Section 3 -0.02% Section 1 1.01% Total Mainline Fuel Percent 3/ 4/ Section 1 Section 1 1.01% Section 2 2.30% Apr-Oct Section 3 3.00% Section 2 2.30% 1.29% 1.99% Section 2 1.29% Section 3 1.01% 1.29% 0.70% Section 3 0.70% 1/ 2/ 3/ 4/ See Schedule No. 3. See Schedule No. 5. Base Mainline Fuel Percent plus True-up Mainline Fuel Percent. Fuel percent from MID 16B or Exempt Section 2 Points to Section 1 equals the Section 1 percentage. Exempt Section 1 and 2 points are listed on Schedule 2. Northern Natural Gas Company Periodic Rate Adjustment for Fuel Derivation of Lost and Unaccounted For Percentage for 2016 Schedule 7 Jan-15 (c) Feb-15 (d) Mar-15 (e) Apr-15 (f) 1,138,632 3,505,089 2,070,455 1,335,091 249,705 104,756,838 110,750,219 110,156,963 99,256,255 78,536,330 1,865,479 99,510 1,938,661 102,801 1,939,922 94,231 1,680,613 75,523 107,860,459 116,296,770 114,261,571 102,347,482 79,522,700 70,294,635 72,788,256 76,502,760 76,231,022 77,286,767 85,030,376 82,627,000 1,061,049,798 246,862 341,377 165,903 3,015,356 1,199,298 5,055,433 142,890 2,023 2,374 13,333 51,209 99,985 10,336,043 104,613,608 110,439,146 110,138,651 99,160,690 78,635,143 69,514,169 72,239,530 76,060,397 75,485,775 75,678,574 83,876,424 81,371,968 1,037,214,075 11 Gas Losses/Workorder 12 Fuel Used 13 Condensate 1,086 1,647,663 47 1,753,818 125 2,302,381 420 1,844,283 104 (615) 1,008,124 8,518 27,109 728,318 1 232 610,223 - 592,475 837 709,774 1,356 768,785 2,749 1,786 947,227 1,241 882,246 (372) 29,598 13,795,317 15,026 14 Storage INJ (WD) 1,017,897 3,619,835 2,275,344 (2,142,348) (1,094,167) (4,284,675) (72,250) (200,252) (226,518) 1,002,270 478,916 71,394 445,446 107,527,163 116,154,301 114,882,699 79,756,301 71,040,355 77,465,711 85,356,803 82,425,221 1,061,835,505 333,296 142,469 (a) 1 SOURCE 2 Purchase (b) 3 Transport 4 Fuel Retained 5 Storage Retained 6 UAF Retained 7 Net Receipts/Sources 8 DISPOSITION 9 Operational Sales 10 Transport, IT FT 15 NET DELIVERIES/DISPOSITION 16 ACCOUNTING UAF (621,128) 101,878,085 469,397 May-15 (g) 806,806 (70,141) (233,601) Jun 15 /1 (h) 69,608,734 749,088 (63,187) (745,720) Jul-15 (i) Aug-15 (j) 124,000 7,287 71,901,904 75,639,070 656,145 172,751 (66,544) 72,920,625 (132,369) 722,907 204,071 (70,575) Sep-15 (k) 75,298,463 775,017 226,794 (69,252) 76,455,480 75,972,761 47,280 258,261 1/ The UAF gain for June, 2015 includes a one-time adjustment of 693,859 Dth reflecting a correction for third party unreported volumes from a prior period. The base UAF percentage to be effective April 1, 2016 excludes the one-time adjustment. Oct-15 (l) Nov-15 (m) Dec-15 (n) Total (o) 375,000 235,000 326,068 9,366,327 75,917,240 83,731,773 81,107,163 1,036,660,952 826,006 240,376 (71,855) (178,944) 954,982 187,637 (79,016) 1,270,288 3,624 (80,143) (326,427) 201,779 UAF = Line (16), Total Column Remove non-recurring adjustment /1 Divided by: Throughput = Line (3) + (4) + (6) Total Column Base UAF True-up UAF Retained Add 2014 Over recovery UAF Retained UAF Actual Jan 2015 - Dec 2015 UAF Over (Under) recovered 14,185,914 1,035,253 (198,648) (785,707) (785,707) 693,859 (91,848) 1,050,648,218 -0.01% 2015 (198,648) 1,960,118 1,761,470 (785,707) 2,547,177 Divided by: Throughput = Line (3) + (4) + (6) Total Column 1,050,648,218 UAF system-wide adjustment -0.24% Effective UAF -0.25% Northern Natural Gas Company Periodic Rate Adjustments for Fuel Storage Fuel Schedule No. 8 For the Period January, 2015 - December, 2015 Storage Fuel Consumed 1/ 838,946 FDD Injections 58,825,739 Storage Fuel Rate 1.43% True-up Actual Storage Fuel Consumed 1/ Actual Storage Fuel Retained Less prior year True-Up Under(Over) Recovered 2/ Actual Storage Fuel Retained Related To Consumed Under(Over) Recovered FDD Injections Storage Fuel Rate True-up 838,946 1,035,253 56,706 978,547 (139,601) 58,825,739 -0.24% Total Storage Fuel Percentages Actual Fuel Rate Percent True Up Percent Total Storage Fuel Percentage 1.43% -0.24% 1.19% 1/ Schedule No. 1 2/ In order to recognize retention to recover the prior year's underrecovery, such amount must be deducted from the total actual retention. 2014 Storage Fuel-True Up as stated on Schedule No. 8 of Northern's January 29, 2015 annual fuel filing in Docket No. RP15-389-000. Northern Natural Gas Company Periodic Rate Adjustments for Fuel Market Area Electric Compression Charge Schedule No. 9 Page 1 of 2 For the Period January, 2015 - December, 2015 1 Electric Compression Charges 2 Deliveries to Market area (MID 17) $462,041 /1 885,548,707 /2 3 Electric Compression Charge $0.0005 4 True-up 5 Actual Electric Compression Commodity Charge Retained 6 Less prior year True-Up Under(Over) Recovered 7 Actual Electric Compression Charge collected vs. costs $739,806 323,913 /3 $415,893 8 Under(Over) Recovered (Line 1 less Line 7) $46,148 9 Electric Compression Rate True-up $0.0001 10 Total Electric Compression Charge 11 Actual Compression Rate $0.0005 12 True Up $0.0001 13 Total Electric Compression Charge $0.0006 1/ Schedule No. 9 Costs for electric compression at facilities listed below: Popple Creek, added 10/2003. Spencer added 12/2006. Chatfield incremental added 1/2007. Spring Green added 1/2008. Elk River added 11/2011. 2/ Schedule 9, page 2. 3/ In order to recognize retention to recover the prior year's underrecovery, such amount must be deducted from the total actual retention. See line 8 of Schedule 9, page 1 of 2 of Northern's January 29, 2015 annual fuel filing in Docket RP15-389. Northern Natural Gas Company Periodic Rate Adjustments for Fuel Market Area Electric Compression Charge Schedule No. 9 Page 2 of 2 For the Period January, 2015 - December, 2015 Charges (a) 201501 201502 201503 201504 201505 201506 201507 201508 201509 201510 201511 201512 Total Total Market Area Throughput (b) Less Fuel Retained (c ) Less UAF Retained (d) Total Market Throughput assessed Elec Compr /1 by acct Elec Compr Collected (f) 71,227.69 94,035.94 111,288.39 86,927.58 9,936.11 8,521.17 13,858.25 9,540.32 7,676.93 4,610.41 24,086.48 20,332.02 105,234,695 104,291,798 85,627,320 64,764,473 56,960,902 59,846,029 62,386,735 61,939,767 62,918,249 69,682,271 70,134,954 90,086,338 1,446,647 1,438,855 1,177,657 397,059 353,005 369,145 387,031 383,326 390,118 432,192 799,133 1,023,290 94,131 93,670 77,027 -58,156 -50,837 -53,250 -56,133 -55,270 -56,575 -62,642 -63,410 -81,189 103,693,917 102,759,273 84,372,636 64,425,570 56,658,734 59,530,134 62,055,837 61,611,711 62,584,706 69,312,721 69,399,231 89,144,237 51,535.64 51,803.71 41,276.39 64,975.97 56,445.23 59,805.48 63,353.78 61,251.54 62,816.76 68,601.18 68,491.95 89,448.50 $462,041.29 893,873,531 8,597,458 -272,634 885,548,707 $739,806.13 1/ Mainline Section 3 throughput per Schedule 2 less fuel and UAF retained. Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Tenth Revised Sheet No. 50 Superseding Ninth Revised Sheet No. 50 RATE SCHEDULE TF FIELD-TOFIELD/MARKET DEMARCATION MARKET-TO-MARKET RESERVATION RATES TF12 TF12 Base Variable TF5 TFF___ Base Tariff Rates 1/ Summer (Apr-Oct) Winter (Nov-Mar) 5.683 10.230 5.683 13.866 -015.153 5.473 9.853 ______________________________________________________________________________________________________________ COMMODITY RATES 2/ TF12 Base, TF12 Var., TF5 & TFF Market Area Field Mileage 5/ Carlton 3/ 6/ Rate per 100 miles Surcharge 4/ Receipt Point Delivery Point Maximum Minimum Market Field Market Field Market Market Field Field 0.0365 0.0365 0.0196 0.0196 Maximum Minimum 0.0122 0.0122 0.0122 0.0040 0.0040 0.0040 Out-of Balance 3/ Maximum Minimum Maximum Minimum 0.0175 0.0175 0.0000 0.0000 0.0365 0.0196 0.0276 0.0090 1/ The minimum reservation rate is equal to zero. 2/ The applicable Mileage Indicator Districts (MIDs) billing rate will be added to the TF rates for volumes received in the Field Area, or received in the Market Area and delivered to the Field Area. The MIDs rates shown on Sheet Nos. 59-60A represent the maximum Field Area throughput commodity rates for any transaction involving MIDs. For volumes transported through Northern’s Ft. Buford compressor station, the commodity rate, fuel and unaccounted for apply only to volumes that are not ultimately confirmed for re-delivery into Northern’s Market Area. 3/ The Maximum and Minimum rates include the Market Area Electric Compression charge of $0.0006 where applicable. In addition, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. 4/ Applicable to Market Area shippers as provided for in the Carlton Settlement filed in Docket No. RP96-347 dated October 28, 1996. 5/ Where applicable, the Field Area Electric Compression charge of $0.0000 and the ACA unit surcharge as set forth on FERC’s website at http://www.ferc.gov will be added to the mileage based rates. 6/ There will be no commodity charge for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no commodity charge for transportation as set forth in Sheet Nos. 141, 142C and 147. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Eleventh Revised Sheet No. 51 Superseding Tenth Revised Sheet No. 51 RATE SCHEDULES TFX and LFT MARKET-TO-MARKET RESERVATION RATES Base Tariff Rates 1/ FIELD-TO-FIELD___ Apr-Oct Nov-Mar Apr-Oct Nov-Mar_ $5.683 $15.153 $5.473 $9.853_ ___________________________________________________________________________________________________________ COMMODITY RATES TFX and LFT 2/ Receipt Point Delivery Point Market Field Market Field Market Market Field Field Market Area Field Mileage 5/ 3/ 7/ Rate per 100 miles Maximum Minimum 0.0365 0.0365 0.0196 0.0196 Maximum Minimum 0.0122 0.0122 0.0122 0.0040 0.0040 0.0040 Carlton Surcharge 4/ Maximum Minimum 0.0175 0.0175 0.0000 0.0000 Out-of-Balance 3/ Maximum Minimum 0.0365 0.0196 0.0276 0.0090 ____________________________________________________________________________________________________________ Reservation 1/ GULF COAST Other Gulf Coast 1/ 2/ 3/ 4/ 5/ 6/ 7/ Commodity 6/ Out-of-Balance 6/ Maximum Minimum Maximum Minimum Maximum Minimum 4.8169 0.0000 0.0000 0.0000 0.0000 0.0000 The minimum reservation rate is equal to zero. The applicable Mileage Indicator Districts (MIDs) billing rate will be added to the TF rates for volumes received in the Field Area, or received in the Market Area and delivered to the Field Area. The MIDs rates shown on Sheet Nos. 59-60A represent the maximum Field Area throughput commodity rates for any transaction involving MIDs. For volumes transported through Northern’s Ft. Buford compressor station, the commodity rate, fuel and unaccounted for apply only to volumes that are not ultimately confirmed for re-delivery into Northern’s Market Area. The Maximum and Minimum rates include the Market Area Electric Compression charge of $0.0006 where applicable. In addition, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. Applicable to Market Area shippers as provided for in the Carlton Settlement filed in Docket No. RP96-347 dated October 28, 1996. Where applicable, the Field Area Compression charge of $0.0000 and the ACA unit surcharge as set forth on FERC’s website at http://www.ferc.gov will be added to the mileage based rates. In addition to the Maximum and Minimum rates, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. There will be no commodity charge for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no commodity charge for transportation as set forth in Sheet Nos. 141, 142C and 147. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Tenth Revised Sheet No. 52 Superseding Ninth Revised Sheet No. 52 RATE SCHEDULE TI COMMODITY RATES Receipt Point 1/ Delivery Point NOVEMBER - MARCH Market Market Field Market Market Field Field Field APRIL - OCTOBER Market Market Field Market Market Field Field Field Market Area Maximum 0.6087 0.6087 0.2508 0.2508 2/ 6/ Minimum 0.0196 0.0196 0.0196 0.0196 Field Mileage Rate per 100 miles 3/ Maximum Minimum 0.1588 0.1588 0.1588 0.0040 0.0040 0.0040 0.0893 0.0893 0.0893 0.0040 0.0040 0.0040 Carlton Surcharge 4/ Out-of-Balance 2/ Maximum Minimum Maximum Minimum 0.0175 0.0175 0.0000 0.0000 0.6091 0.0200 0.3589 0.0090 0.2508 0.0196 0.2018 0.0090 0.0000 0.0000 0.0000 0.0000 ___________________________________________________________________________________________________________ Commodity GULF COAST Other Gulf Coast 1/ 2/ 3/ 4/ 5/ 6/ 5/ Out-of-Balance 5/ Maximum Minimum Maximum Minimum 0.1584 0.0000 0.1584 0.0000 The applicable Mileage Indicator Districts (MIDs) billing rate will be added to the TI rates for volumes received in the Field Area, or received in the Market Area and delivered to the Field Area. The MIDs rates shown on Sheet Nos. 59-60A represent the maximum Field Area throughput commodity rates for any transaction involving MIDs. The Maximum and Minimum rates include the Market Area Electric Compression charge of $0.0006 where applicable. In addition, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. Where applicable, Field Area Compression charge of $0.0000 and ACA unit surcharge as set forth on FERC’s website at http://www.ferc.gov will be added to the mileage based rates. Applicable to Market Area Shippers as provided for in the Carlton Settlement filed in Docket No. RP96-347 dated October 28, 1996. In addition to the Maximum and Minimum rates, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. There will be no commodity charge for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no commodity charge for transportation as set forth in Sheet Nos. 141, 142C and 147. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Ninth Revised Sheet No. 53 Superseding Eighth Revised Sheet No. 53 Commodity Charges Nov-Oct GS-T COMMODITY THROUGHPUT RATE Market Area Field to Demarcation Field-to-Market 0.7030 0.6396 1.2587 1/ 6/ 8/ 1/ 6/ 0.2600 0.0106 1/ 2/ 6/ 1/ 2/ 6/ STAND ALONE COMPRESSION Ft. Buford Maximum Minimum RATE SCHEDULE CS-1 Compression Fee (Exhibit A Volumes) Maximum Minimum 0.0401 0.0054 Compression Fee (Additional Volumes) Maximum Minimum 0.0401 0.0054 BEAVER COMPRESSION FEE Incidental Jurisdictional Compression Fee 0.0400 WATERVILLE STORAGE The Market Area transportation rate, fuel and unaccounted for is charged for delivery to Waterville storage point (POI 922), or other similarly situated third party storage points in the Market Area. If redelivery from Waterville, or other similarly situated third party storage points, is to a Market Area point, there are no additional transportation, fuel or unaccounted for charges. If the redelivery is to a Field Area delivery point, the Field Area mileage/MID transportation rate and fuel is charged. CAPACITY RELEASE FEE (Rate per transaction) Marketing DAILY DELIVERY VARIANCE CHARGE: Positive DDVC Positive/Critical DDVC -First 2% -Next 3% Negative DDVC Punitive DDVC Punitive/Critical DDVC -Level I -Level II AUTHORIZED OVERRUN TF, TFX, LFT, TI and GS-T Rate Schedules 1/ 2/ 3/ 4/ 5/ 6/ 7/ 8/ Negotiated 3/ 1.0000 7/ 15.0000 22.0000 0.4000 4/ 7/ 7/ 56.5000 113.0000 5/ In addition, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. Rate only applies to interruptible volumes transported through Ft. Buford that are not ultimately confirmed for redelivery into Northern's Market Area system. Northern will assess fee only in those instances outlined in Sheet No. 288. Charge equal to five (5) times the SMS monthly reservation fee. The Authorized Overrun Rate shall be equal to the TI rate for the applicable MID path shown in Sheet Nos. 59-60A. Reflects Market Area Electric Compression Surcharge of $0.0006 and Field Area Electric Compression charge of $0.0000 where applicable. On non-SOL/SUL/Critical Days the rate will be the maximum November-March Market Area TI Rate during the November-March period, and the maximum April-October Market Area TI Rate during the April-October period. There will be no commodity charge for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no commodity charge for transportation as set forth in Sheet Nos. 141, 142C and 147. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Thirteenth Revised Sheet No. 54 Superseding Twelfth Revised Sheet No. 54 RATE SCHEDULES TF, TFX, LFT, GST, TI, & FDD Fuel Percentages/Electric Compression Rates Percentages FUEL PERCENTAGES: 1/ 7/ Market Area (including Out-of-Balance) 0.70% Field Area 2/ UNACCOUNTED FOR PERCENTAGE (including Out-of-Balance) FDD Storage Fuel 3/ -0.25% 5/ 4/ 6/ 5/ 7/ 1.19% Electric Compression COMMODITY RATES: 1/ 7/ Market Area $0.0006 Field Area $0.0000 1/ Northern will adjust its Fuel percentages and electric compression commodity rates in accordance with Sections 53A and 53B, respectively, of the General Terms and Conditions of this Tariff. 2/ Fuel shall be determined by Mileage Indicator Districts (MIDS) for the Field Area. 3/ Fuel charged in the Field and Market Areas for a pooling transaction or for processing plant transactions will not exceed the fuel charged on a unified Field-to-Market transaction having the same initial Field receipt point and ultimate Market delivery point, i.e., the total fuel collected for transactions that go into and out of pooling points or processing plants in either the Field Area or the Market Area will be no greater than the fuel collected on the total path between the original receipt point and the ultimate delivery point, subject to the shipper(s) providing Northern the requisite information. 4/ The Unaccounted For percentage utilizes the most recent twelve-month period ending December 31, 2015. For deliveries subject only to UAF, the UAF rate is zero; provided, however Northern will issue a volume credit on the Shipper’s monthly imbalance statement equivalent to the Unaccounted For Percentage listed above for the period April 2016 through March 2017 for such deliveries. 5/ Sheet No. 54A identifies the specific transportation transactions exempt from fuel and unaccounted-for retention charges. 6/ The Out-of-Balance Fuel Percentage for deliveries in MIDS 1-7 shall be the applicable Section 1 Mainline Fuel percentage, and for deliveries in MIDS 8-16B shall be the applicable Section 2 Mainline Fuel percentage. 7/ There will be no fuel, electric compression or UAF charges for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no fuel, electric compression or UAF charges for transportation as set forth in Sheet Nos. 141,142C and 147. In the event facilities have been abandoned, Northern shall have the right to file to reduce the applicable MID fuel percentage(s) on a common basis for all transactions affected by the abandonment to reflect the reduction in use for the remainder of the PRA period. In the event such abandoned facilities (gas compressors) have been replaced with electric compressors installed after October 1, 1998, and Northern reduces the applicable MID fuel percentages, Northern has the right to file to increase the applicable electric compression commodity rate. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Eighth Revised Sheet No. 60 Superseding Seventh Revised Sheet No. 60 MILEAGE INDICATOR DISTRICTS (dollars per MMBtu) DELIVERY DISTRICT RECEIPT DISTRICT 10 11 12 13 14 15 16A 16B 17 1 TI Apr-Oct TI Nov-Mar TF 0.5474 0.9734 0.0748 0.4420 0.7861 0.0604 0.4965 0.8829 0.0678 0.5394 0.9592 0.0737 0.6162 1.0957 0.0842 0.6564 1.1672 0.0897 0.6126 1.0894 0.0837 0.6876 1.2228 0.0939 0.9384 1.8315 0.1304 2 TI Apr-Oct TI Nov-Mar TF 0.4751 0.8448 0.0649 0.3929 0.6987 0.0537 0.4385 0.7797 0.0599 0.4769 0.8480 0.0651 0.5546 0.9861 0.0758 0.6555 1.1656 0.0895 0.5572 0.9909 0.0761 0.6197 1.1021 0.0847 0.8705 1.7108 0.1212 3 TI Apr-Oct TI Nov-Mar TF 0.4903 0.8718 0.0670 0.4197 0.7464 0.0573 0.4644 0.8258 0.0634 0.5037 0.8956 0.0688 0.6010 1.0687 0.0821 0.6814 1.2116 0.0931 0.5108 0.9083 0.0698 0.6260 1.1132 0.0855 0.8768 1.7219 0.1220 4 TI Apr-Oct TI Nov-Mar TF 0.4260 0.7575 0.0582 0.3724 0.6622 0.0509 0.4179 0.7432 0.0571 0.4563 0.8115 0.0623 0.5385 0.9576 0.0736 0.6349 1.1291 0.0867 0.5251 0.9337 0.0717 0.6144 1.0925 0.0839 0.8652 1.7012 0.1204 5 TI Apr-Oct TI Nov-Mar TF 0.4492 0.7988 0.0614 0.3492 0.6209 0.0477 0.3947 0.7019 0.0539 0.4331 0.7702 0.0592 0.4751 0.8448 0.0649 0.5983 1.0640 0.0817 0.5340 0.9496 0.0730 0.5867 1.0433 0.0802 0.8375 1.6520 0.1167 6 TI Apr-Oct TI Nov-Mar TF 0.4081 0.7257 0.0558 0.3152 0.5606 0.0431 0.3617 0.6431 0.0494 0.4001 0.7114 0.0547 0.4795 0.8528 0.0655 0.5912 1.0513 0.0808 0.4751 0.8448 0.0649 0.5688 1.0116 0.0777 0.8196 1.6203 0.1142 7 TI Apr-Oct TI Nov-Mar TF 0.2670 0.4748 0.0365 0.1715 0.3049 0.0234 0.2161 0.3843 0.0295 0.2554 0.4542 0.0349 0.3367 0.5987 0.0460 0.5206 0.9258 0.0711 0.3331 0.5923 0.0455 0.4135 0.7352 0.0565 0.6643 1.3439 0.0930 7B TI Apr-Oct TI Nov-Mar TF 0.2670 0.4748 0.0365 0.1715 0.3049 0.0234 0.2161 0.3843 0.0295 0.2554 0.4542 0.0349 0.3367 0.5987 0.0460 0.5206 0.9258 0.0711 0.3331 0.5923 0.0455 0.4135 0.7352 0.0565 0.6643 1.3439 0.0930 8 TI Apr-Oct TI Nov-Mar TF 0.1947 0.3462 0.0266 0.1161 0.2064 0.0159 0.1482 0.2636 0.0203 0.1875 0.3335 0.0256 0.2625 0.4669 0.0359 0.3965 0.7051 0.0542 0.2500 0.4446 0.0342 0.3313 0.5891 0.0453 0.5821 1.1978 0.0818 9 TI Apr-Oct TI Nov-Mar TF 0.1509 0.2684 0.0206 0.0679 0.1207 0.0093 0.1473 0.2620 0.0201 0.1500 0.2668 0.0205 0.2366 0.4208 0.0323 0.3626 0.6447 0.0495 0.2652 0.4716 0.0362 0.3268 0.5812 0.0447 0.5776 1.1899 0.0812 NOTE:MID 16A represents the 14 county area south of the Market/Field demarcation point. MID 16B represents the Field/Market demarcation point. MID 17 represents the Market area. NOTE:The MID rates include: (1) the appropriate Market Area Commodity rate for deliveries to MID 17; (2) the applicable Market Area Electric Compression surcharge as set forth on Sheet Nos. 50 through 52 for deliveries to MID 17; and (3) the applicable Field Area Electric Compression surcharge as set forth on Sheet Nos. 50 through 52 for deliveries to MIDs 1 - 16A. In addition, where applicable, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov and the Carlton surcharge. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Eighth Revised Sheet No. 60A Superseding Seventh Revised Sheet No. 60A MILEAGE INDICATOR DISTRICTS (dollars per MMBtu) DELIVERY DISTRICT RECEIPT DISTRICT 10 11 12 13 14 15 16A 16B 17 10 TI Apr-Oct TI Nov-Mar TF 0.0107 0.0191 0.0015 0.0438 0.0778 0.0060 0.1313 0.2334 0.0179 0.1679 0.2985 0.0229 0.2483 0.4415 0.0339 0.3447 0.6130 0.0471 0.2045 0.3637 0.0279 0.3251 0.5780 0.0444 0.5759 1.1867 0.0809 11 TI Apr-Oct TI Nov-Mar TF 0.0956 0.1699 0.0131 0.0214 0.0381 0.0029 0.0393 0.0699 0.0054 0.1098 0.1953 0.0150 0.1875 0.3335 0.0256 0.3045 0.5415 0.0416 0.1590 0.2827 0.0217 0.2438 0.4335 0.0333 0.4946 1.0422 0.0698 12 TI Apr-Oct TI Nov-Mar TF 0.1491 0.2652 0.0204 0.0732 0.1302 0.0100 0.0893 0.1588 0.0122 0.1366 0.2430 0.0187 0.2259 0.4018 0.0309 0.3233 0.5749 0.0442 0.2170 0.3859 0.0296 0.3045 0.5415 0.0416 0.5553 1.1502 0.0781 13 TI Apr-Oct TI Nov-Mar TF 0.1956 0.3478 0.0267 0.0759 0.1350 0.0104 0.1116 0.1985 0.0153 0.0500 0.0889 0.0068 0.1107 0.1969 0.0151 0.2384 0.4240 0.0326 0.0902 0.1604 0.0123 0.1759 0.3128 0.0240 0.4267 0.9215 0.0605 14 TI Apr-Oct TI Nov-Mar TF 0.1723 0.3065 0.0235 0.1938 0.3446 0.0265 0.2420 0.4303 0.0331 0.0759 0.1350 0.0104 0.0214 0.0381 0.0029 0.3054 0.5431 0.0417 0.1715 0.3049 0.0234 0.2616 0.4653 0.0357 0.5124 1.0740 0.0722 15 TI Apr-Oct TI Nov-Mar TF 0.3902 0.6940 0.0533 0.3134 0.5574 0.0428 0.3643 0.6479 0.0498 0.2313 0.4113 0.0316 0.3170 0.5637 0.0433 0.0223 0.0397 0.0031 0.1527 0.2715 0.0209 0.2340 0.4161 0.0320 0.4848 1.0248 0.0685 16A TI Apr-Oct TI Nov-Mar TF 0.2956 0.5256 0.0404 0.1706 0.3033 0.0233 0.2197 0.3906 0.0300 0.0902 0.1604 0.0123 0.1750 0.3112 0.0239 0.1465 0.2604 0.0200 0.0152 0.0270 0.0021 0.0839 0.1493 0.0115 0.3347 0.7580 0.0480 16B TI Apr-Oct TI Nov-Mar TF 0.3251 0.5780 0.0444 0.2438 0.4335 0.0333 0.3045 0.5415 0.0416 0.1759 0.3128 0.0240 0.2616 0.4653 0.0357 0.2340 0.4161 0.0320 0.0839 0.1493 0.0115 0.0000 0.0000 0.0000 0.2508 0.6087 0.0365 17 TI Apr-Oct TI Nov-Mar TF 0.6564 1.1672 0.0897 0.5608 0.9973 0.0766 0.6108 1.0862 0.0834 0.4635 0.8242 0.0633 0.3304 0.5876 0.0451 0.3402 0.6050 0.0465 0.2608 0.4637 0.0356 0.3751 0.6670 0.0512 0.2508 0.6087 0.0365 NOTE:MID 16A represents the 14 county area south of the Market/Field demarcation point. MID 16B represents the Field/Market demarcation point. MID 17 represents the Market area. NOTE:The MID rates include: (1) the appropriate Market Area Commodity rate for deliveries to MID 17; (2) the applicable Market Area Electric Compression surcharge as set forth on Sheet Nos. 50 through 52 for deliveries to MID 17; and (3) the applicable Field Area Electric Compression surcharge as set forth on Sheet Nos. 50 through 52 for deliveries to MIDs 1 - 16A. In addition, where applicable, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov and the Carlton surcharge. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Sixth Revised Sheet No. 61 Superseding Fifth Revised Sheet No. 61 MILEAGE INDICATOR DISTRICTS FUEL PERCENTAGES DELIVERY DISTRICT RECEIPT DISTRICT 1 2 3 4 5 6 7 7B 8 1 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 1.01% 2.05% 2 ML Fuel 0.00% 0.00% 0.76% 0.76% 0.00% 0.00% 0.76% 1.01% 2.05% 3 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 1.01% 2.05% 4 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.00% 0.76% 0.76% 1.01% 2.05% 5 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.00% 0.76% 0.76% 1.01% 2.05% 6 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 1.01% 2.05% 7 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 1.01% 2.05% 7B ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.00% 1.04% 8 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 9 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 10 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 11 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 12 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 13 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 14 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 15 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 16A ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 16B ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.00% 1.04% 17 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.00% 1.04% Note:ML Fuel percentages include the unaccounted-for percent as set forth on Sheet No. 54. Northern will adjust its fuel percentages in accordance with Section 53 of the General Terms and Conditions of this Tariff. In recognition of all to-and-through transactions where gas is nominated and scheduled for delivery first to the Bushton inlet at POI 1708 in MID 16A and then subsequently delivered to other delivery points on Northern's system, the UAF percent will be zero on deliveries to the Bushton inlet (POI 1708); and the fuel will be zero from the Bushton outlet (POI 1707) to MID 16B. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Twelfth Revised Sheet No. 62 Superseding Eleventh Revised Sheet No. 62 MILEAGE INDICATOR DISTRICTS FUEL PERCENTAGES DELIVERY DISTRICT RECEIPT DISTRICT 9 10 11 12 13 14 15 16A 16B 17 1 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 2 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 3 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 4 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 5 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 6 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 7 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 7B ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 8 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 9 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 10 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 11 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 12 ML Fuel 1.04% 1.04% 1.04% 0.00% 1.04% 0.00% 1.04% 1.04% 1.29% 1.74% 13 ML Fuel 1.04% 1.04% 1.04% 0.00% 1.04% 0.00% 1.04% 1.04% 1.29% 1.74% 14 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 15 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 16A ML Fuel 1.04% 1.04% 1.04% 0.00% 0.00% 0.00% 0.00% 0.00% 1.29% 1.74% 16B ML Fuel 1.04% 1.04% 1.04% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.45% 17 ML Fuel 1.04% 1.04% 1.04% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.45% Note:ML Fuel percentages include the unaccounted-for percent as set forth on Sheet No. 54. Northern will adjust its fuel percentages in accordance with Section 53 of the General Terms and Conditions of this Tariff. In recognition of all to-and-through transactions where gas is nominated and scheduled for delivery first to the Bushton inlet at POI 1708 in MID 16A and then subsequently delivered to other delivery points on Northern's system, the UAF percent will be zero on deliveries to the Bushton inlet (POI 1708); and the fuel will be zero from the Bushton outlet (POI 1707) to MID 16B. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Tenth Revised Sheet No. 50 Superseding Ninth Revised Sheet No. 50 RATE SCHEDULE TF FIELD-TOFIELD/MARKET DEMARCATION MARKET-TO-MARKET RESERVATION RATES TF12 TF12 Base Variable TF5 TFF___ Base Tariff Rates 1/ Summer (Apr-Oct) Winter (Nov-Mar) 5.683 10.230 5.683 13.866 -015.153 5.473 9.853 ______________________________________________________________________________________________________________ COMMODITY RATES 2/ TF12 Base, TF12 Var., TF5 & TFF Market Area Field Mileage 5/ Carlton 3/ 6/ Rate per 100 miles Surcharge 4/ Receipt Point Delivery Point Maximum Market 0.0200196 Field Market Field Market 0.03695 0.0200196 0.0175 0.0000 Market Field Field 0.03695 0.0200196 0.0122 0.0040 0.0122 0.0040 0.0122 0.0040 0.0175 0.0000 Minimum Maximum Minimum Maximum Out-of Balance 3/ Minimum Maximum Minimum 0.03695 0.0276 0.0090 1/ The minimum reservation rate is equal to zero. 2/ The applicable Mileage Indicator Districts (MIDs) billing rate will be added to the TF rates for volumes received in the Field Area, or received in the Market Area and delivered to the Field Area. The MIDs rates shown on Sheet Nos. 59-60A represent the maximum Field Area throughput commodity rates for any transaction involving MIDs. For volumes transported through Northern’s Ft. Buford compressor station, the commodity rate, fuel and unaccounted for apply only to volumes that are not ultimately confirmed for re-delivery into Northern’s Market Area. 3/ The Maximum and Minimum rates include the Market Area Electric Compression charge of $0.00100006 where applicable. In addition, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. 4/ Applicable to Market Area shippers as provided for in the Carlton Settlement filed in Docket No. RP96-347 dated October 28, 1996. 5/ Where applicable, the Field Area Electric Compression charge of $0.0000 and the ACA unit surcharge as set forth on FERC’s website at http://www.ferc.gov will be added to the mileage based rates. 6/ There will be no commodity charge for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no commodity charge for transportation as set forth in Sheet Nos. 141, 142C and 147. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Eleventh Revised Sheet No. 51 Superseding Tenth Revised Sheet No. 51 RATE SCHEDULES TFX and LFT MARKET-TO-MARKET RESERVATION RATES Base Tariff Rates 1/ FIELD-TO-FIELD___ Apr-Oct Nov-Mar Apr-Oct Nov-Mar_ $5.683 $15.153 $5.473 $9.853_ ___________________________________________________________________________________________________________ COMMODITY RATES TFX and LFT 2/ Market Area Maximum Field Mileage 5/ 3/ 7/ Rate per 100 miles Minimum Maximum Minimum Carlton Surcharge 4/ Out-of-Balance 3/ Receipt Point Delivery Point Maximum Minimum Maximum Market 0.0200196 Field Market Field Market 0.03695 0.0200196 0.0175 0.0000 Market Field Field 0.03695 0.0200196 0.0122 0.0040 0.0122 0.0040 0.0122 0.0040 0.0175 0.0000 Minimum 0.03695 0.0276 0.0090 ____________________________________________________________________________________________________________ Reservation 1/ GULF COAST Other Gulf Coast 1/ 2/ 3/ 4/ 5/ 6/ 7/ Commodity 6/ Out-of-Balance 6/ Maximum Minimum Maximum Minimum Maximum Minimum 4.8169 0.0000 0.0000 0.0000 0.0000 0.0000 The minimum reservation rate is equal to zero. The applicable Mileage Indicator Districts (MIDs) billing rate will be added to the TF rates for volumes received in the Field Area, or received in the Market Area and delivered to the Field Area. The MIDs rates shown on Sheet Nos. 59-60A represent the maximum Field Area throughput commodity rates for any transaction involving MIDs. For volumes transported through Northern’s Ft. Buford compressor station, the commodity rate, fuel and unaccounted for apply only to volumes that are not ultimately confirmed for re-delivery into Northern’s Market Area. The Maximum and Minimum rates include the Market Area Electric Compression charge of $0.00100006 where applicable. In addition, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. Applicable to Market Area shippers as provided for in the Carlton Settlement filed in Docket No. RP96-347 dated October 28, 1996. Where applicable, the Field Area Compression charge of $0.0000 and the ACA unit surcharge as set forth on FERC’s website at http://www.ferc.gov will be added to the mileage based rates. In addition to the Maximum and Minimum rates, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. There will be no commodity charge for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no commodity charge for transportation as set forth in Sheet Nos. 141, 142C and 147. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Tenth Revised Sheet No. 52 Superseding Ninth Revised Sheet No. 52 RATE SCHEDULE TI COMMODITY RATES Receipt Point 1/ Delivery Point NOVEMBER - MARCH Market Market 0.0200 Field Market Market Field Field Field APRIL - OCTOBER Market 0.0200196 Field Market Field Market Area Maximum Field Mileage Rate per 100 miles 3/ 2/ 6/ Minimum Maximum Minimum Carlton Surcharge Maximum 4/ Out-of-Balance 2/ Minimum Maximum 0.609187 0.0200196 0.0175 0.0000 0.609187 0.0200196 0.1588 0.0040 0.1588 0.0040 0.1588 0.0040 0.0175 0.0000 0.251208 0.0200196 0.0000 0.0000 Market Field Field 0.251208 0.0200196 0.0000 0.0000 0.0893 0.0040 0.0893 0.0040 0.0893 0.0040 0.6091 0.3589 Market Minimum 0.0090 0.251208 0.2018 0.0090 ___________________________________________________________________________________________________________ Commodity GULF COAST Other Gulf Coast 1/ 2/ 3/ 4/ 5/ 6/ 5/ Out-of-Balance 5/ Maximum Minimum Maximum Minimum 0.1584 0.0000 0.1584 0.0000 The applicable Mileage Indicator Districts (MIDs) billing rate will be added to the TI rates for volumes received in the Field Area, or received in the Market Area and delivered to the Field Area. The MIDs rates shown on Sheet Nos. 59-60A represent the maximum Field Area throughput commodity rates for any transaction involving MIDs. The Maximum and Minimum rates include the Market Area Electric Compression charge of $0.001006 where applicable. In addition, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. Where applicable, Field Area Compression charge of $0.0000 and ACA unit surcharge as set forth on FERC’s website at http://www.ferc.gov will be added to the mileage based rates. Applicable to Market Area Shippers as provided for in the Carlton Settlement filed in Docket No. RP96-347 dated October 28, 1996. In addition to the Maximum and Minimum rates, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. There will be no commodity charge for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no commodity charge for transportation as set forth in Sheet Nos. 141, 142C and 147. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Ninth Revised Sheet No. 53 Superseding Eighth Revised Sheet No. 53 Commodity Charges Nov-Oct GS-T COMMODITY THROUGHPUT RATE Market Area Field to Demarcation Field-to-Market 0.70340 0.6396 1.259187 1/ 0.26040 0.011006 1/ 2/ 6/ 1/ 2/ 6/ 1/ 6/ 8/ 6/ STAND ALONE COMPRESSION Ft. Buford Maximum Minimum RATE SCHEDULE CS-1 Compression Fee (Exhibit A Volumes) Maximum Minimum 0.0401 0.0054 Compression Fee (Additional Volumes) Maximum Minimum 0.0401 0.0054 BEAVER COMPRESSION FEE Incidental Jurisdictional Compression Fee 0.0400 WATERVILLE STORAGE The Market Area transportation rate, fuel and unaccounted for is charged for delivery to Waterville storage point (POI 922), or other similarly situated third party storage points in the Market Area. If redelivery from Waterville, or other similarly situated third party storage points, is to a Market Area point, there are no additional transportation, fuel or unaccounted for charges. If the redelivery is to a Field Area delivery point, the Field Area mileage/MID transportation rate and fuel is charged. CAPACITY RELEASE FEE (Rate per transaction) Marketing DAILY DELIVERY VARIANCE CHARGE: Positive DDVC Positive/Critical DDVC -First 2% -Next 3% Negative DDVC Punitive DDVC Punitive/Critical DDVC -Level I -Level II AUTHORIZED OVERRUN TF, TFX, LFT, TI and GS-T Rate Schedules 1/ 2/ 3/ 4/ 5/ 6/ 7/ 8/ Negotiated 3/ 1.0000 7/ 15.0000 22.0000 0.4000 4/ 7/ 7/ 56.5000 113.0000 5/ In addition, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov. Rate only applies to interruptible volumes transported through Ft. Buford that are not ultimately confirmed for redelivery into Northern's Market Area system. Northern will assess fee only in those instances outlined in Sheet No. 288. Charge equal to five (5) times the SMS monthly reservation fee. The Authorized Overrun Rate shall be equal to the TI rate for the applicable MID path shown in Sheet Nos. 59-60A. Reflects Market Area Electric Compression Surcharge of $0.001006 and Field Area Electric Compression charge of $0.0000 where applicable. On non-SOL/SUL/Critical Days the rate will be the maximum November-March Market Area TI Rate during the November-March period, and the maximum April-October Market Area TI Rate during the April-October period. There will be no commodity charge for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no commodity charge for transportation as set forth in Sheet Nos. 141, 142C and 147. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Thirteenth Revised Sheet No. 54 Superseding Twelfth Revised Sheet No. 54 RATE SCHEDULES TF, TFX, LFT, GST, TI, & FDD Fuel Percentages/Electric Compression Rates Percentages FUEL PERCENTAGES: 1/ 7/ Market Area (including Out-of-Balance) 1.140.70% Field Area 2/ UNACCOUNTED FOR PERCENTAGE (including Out-of-Balance) FDD Storage Fuel 3/ -0.0925% 5/ 6/ 4/ 5/ 7/ 1.7619% Electric Compression COMMODITY RATES: 1/ 7/ Market Area $0.001006 Field Area $0.0000 1/ Northern will adjust its Fuel percentages and electric compression commodity rates in accordance with Sections 53A and 53B, respectively, of the General Terms and Conditions of this Tariff. 2/ Fuel shall be determined by Mileage Indicator Districts (MIDS) for the Field Area. 3/ Fuel charged in the Field and Market Areas for a pooling transaction or for processing plant transactions will not exceed the fuel charged on a unified Field-to-Market transaction having the same initial Field receipt point and ultimate Market delivery point, i.e., the total fuel collected for transactions that go into and out of pooling points or processing plants in either the Field Area or the Market Area will be no greater than the fuel collected on the total path between the original receipt point and the ultimate delivery point, subject to the shipper(s) providing Northern the requisite information. 4/ The Unaccounted For percentage utilizes the most recent twelve-month period ending December 31, 20145. For deliveries subject only to UAF, the UAF rate is zero; provided, however Northern will issue a volume credit on the Shipper’s monthly imbalance statement equivalent to -0.09% the Unaccounted For Percentage listed above for the period April 20156 through March 20167 for such deliveries. 5/ Sheet No. 54A identifies the specific transportation transactions exempt from fuel and unaccounted-for retention charges. 6/ The Out-of-Balance Fuel Percentage for deliveries in MIDS 1-7 shall be the applicable Section 1 Mainline Fuel percentage, and for deliveries in MIDS 8-16B shall be the applicable Section 2 Mainline Fuel percentage. 7/ There will be no fuel, electric compression or UAF charges for transportation from the Ventura pooling point (POI 78623) to the NBPL/NNG Ventura point (POI 192) and from the Ventura pooling point (POI 78623) to the MID 17 pooling point (POI 71458). In addition, there will be no fuel, electric compression or UAF charges for transportation as set forth in Sheet Nos. 141,142C and 147. In the event facilities have been abandoned, Northern shall have the right to file to reduce the applicable MID fuel percentage(s) on a common basis for all transactions affected by the abandonment to reflect the reduction in use for the remainder of the PRA period. In the event such abandoned facilities (gas compressors) have been replaced with electric compressors installed after October 1, 1998, and Northern reduces the applicable MID fuel percentages, Northern has the right to file to increase the applicable electric compression commodity rate. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Eighth Revised Sheet No. 60 Superseding Seventh Revised Sheet No. 60 MILEAGE INDICATOR DISTRICTS (dollars per MMBtu) DELIVERY DISTRICT RECEIPT DISTRICT 10 11 12 13 14 15 16A 16B 17 1 TI Apr-Oct TI Nov-Mar TF 0.5474 0.9734 0.0748 0.4420 0.7861 0.0604 0.4965 0.8829 0.0678 0.5394 0.9592 0.0737 0.6162 1.0957 0.0842 0.6564 1.1672 0.0897 0.6126 1.0894 0.0837 0.6876 1.2228 0.0939 0.93884 1.83195 0.13084 2 TI Apr-Oct TI Nov-Mar TF 0.4751 0.8448 0.0649 0.3929 0.6987 0.0537 0.4385 0.7797 0.0599 0.4769 0.8480 0.0651 0.5546 0.9861 0.0758 0.6555 1.1656 0.0895 0.5572 0.9909 0.0761 0.6197 1.1021 0.0847 0.87095 1.711208 0.12162 3 TI Apr-Oct TI Nov-Mar TF 0.4903 0.8718 0.0670 0.4197 0.7464 0.0573 0.4644 0.8258 0.0634 0.5037 0.8956 0.0688 0.6010 1.0687 0.0821 0.6814 1.2116 0.0931 0.5108 0.9083 0.0698 0.6260 1.1132 0.0855 0.877268 1.722319 0.12240 4 TI Apr-Oct TI Nov-Mar TF 0.4260 0.7575 0.0582 0.3724 0.6622 0.0509 0.4179 0.7432 0.0571 0.4563 0.8115 0.0623 0.5385 0.9576 0.0736 0.6349 1.1291 0.0867 0.5251 0.9337 0.0717 0.6144 1.0925 0.0839 0.86562 1.70162 0.12084 5 TI Apr-Oct TI Nov-Mar TF 0.4492 0.7988 0.0614 0.3492 0.6209 0.0477 0.3947 0.7019 0.0539 0.4331 0.7702 0.0592 0.4751 0.8448 0.0649 0.5983 1.0640 0.0817 0.5340 0.9496 0.0730 0.5867 1.0433 0.0802 0.83795 1.65240 0.117167 6 TI Apr-Oct TI Nov-Mar TF 0.4081 0.7257 0.0558 0.3152 0.5606 0.0431 0.3617 0.6431 0.0494 0.4001 0.7114 0.0547 0.4795 0.8528 0.0655 0.5912 1.0513 0.0808 0.4751 0.8448 0.0649 0.5688 1.0116 0.0777 0.82008196 1.62073 0.11462 7 TI Apr-Oct TI Nov-Mar TF 0.2670 0.4748 0.0365 0.1715 0.3049 0.0234 0.2161 0.3843 0.0295 0.2554 0.4542 0.0349 0.3367 0.5987 0.0460 0.5206 0.9258 0.0711 0.3331 0.5923 0.0455 0.4135 0.7352 0.0565 0.66473 1.344339 0.09340 7B TI Apr-Oct TI Nov-Mar TF 0.2670 0.4748 0.0365 0.1715 0.3049 0.0234 0.2161 0.3843 0.0295 0.2554 0.4542 0.0349 0.3367 0.5987 0.0460 0.5206 0.9258 0.0711 0.3331 0.5923 0.0455 0.4135 0.7352 0.0565 0.66473 1.344339 0.09340 8 TI Apr-Oct TI Nov-Mar TF 0.1947 0.3462 0.0266 0.1161 0.2064 0.0159 0.1482 0.2636 0.0203 0.1875 0.3335 0.0256 0.2625 0.4669 0.0359 0.3965 0.7051 0.0542 0.2500 0.4446 0.0342 0.3313 0.5891 0.0453 0.58251 1.198278 0.082218 9 TI Apr-Oct TI Nov-Mar TF 0.1509 0.2684 0.0206 0.0679 0.1207 0.0093 0.1473 0.2620 0.0201 0.1500 0.2668 0.0205 0.2366 0.4208 0.0323 0.3626 0.6447 0.0495 0.2652 0.4716 0.0362 0.3268 0.5812 0.0447 0.578076 1.1903899 0.08162 NOTE:MID 16A represents the 14 county area south of the Market/Field demarcation point. MID 16B represents the Field/Market demarcation point. MID 17 represents the Market area. NOTE:The MID rates include: (1) the appropriate Market Area Commodity rate for deliveries to MID 17; (2) the applicable Market Area Electric Compression surcharge as set forth on Sheet Nos. 50 through 52 for deliveries to MID 17; and (3) the applicable Field Area Electric Compression surcharge as set forth on Sheet Nos. 50 through 52 for deliveries to MIDs 1 - 16A. In addition, where applicable, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov and the Carlton surcharge. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Eighth Revised Sheet No. 60A Superseding Seventh Revised Sheet No. 60A MILEAGE INDICATOR DISTRICTS (dollars per MMBtu) DELIVERY DISTRICT RECEIPT DISTRICT 10 11 12 13 14 15 16A 16B 17 10 TI Apr-Oct TI Nov-Mar TF 0.0107 0.0191 0.0015 0.0438 0.0778 0.0060 0.1313 0.2334 0.0179 0.1679 0.2985 0.0229 0.2483 0.4415 0.0339 0.3447 0.6130 0.0471 0.2045 0.3637 0.0279 0.3251 0.5780 0.0444 0.576359 1.187167 0.081309 11 TI Apr-Oct TI Nov-Mar TF 0.0956 0.1699 0.0131 0.0214 0.0381 0.0029 0.0393 0.0699 0.0054 0.1098 0.1953 0.0150 0.1875 0.3335 0.0256 0.3045 0.5415 0.0416 0.1590 0.2827 0.0217 0.2438 0.4335 0.0333 0.495046 1.04262 0.0702698 12 TI Apr-Oct TI Nov-Mar TF 0.1491 0.2652 0.0204 0.0732 0.1302 0.0100 0.0893 0.1588 0.0122 0.1366 0.2430 0.0187 0.2259 0.4018 0.0309 0.3233 0.5749 0.0442 0.2170 0.3859 0.0296 0.3045 0.5415 0.0416 0.55573 1.15062 0.07851 13 TI Apr-Oct TI Nov-Mar TF 0.1956 0.3478 0.0267 0.0759 0.1350 0.0104 0.1116 0.1985 0.0153 0.0500 0.0889 0.0068 0.1107 0.1969 0.0151 0.2384 0.4240 0.0326 0.0902 0.1604 0.0123 0.1759 0.3128 0.0240 0.427167 0.92195 0.06095 14 TI Apr-Oct TI Nov-Mar TF 0.1723 0.3065 0.0235 0.1938 0.3446 0.0265 0.2420 0.4303 0.0331 0.0759 0.1350 0.0104 0.0214 0.0381 0.0029 0.3054 0.5431 0.0417 0.1715 0.3049 0.0234 0.2616 0.4653 0.0357 0.51284 1.07440 0.07262 15 TI Apr-Oct TI Nov-Mar TF 0.3902 0.6940 0.0533 0.3134 0.5574 0.0428 0.3643 0.6479 0.0498 0.2313 0.4113 0.0316 0.3170 0.5637 0.0433 0.0223 0.0397 0.0031 0.1527 0.2715 0.0209 0.2340 0.4161 0.0320 0.485248 1.025248 0.06895 16A TI Apr-Oct TI Nov-Mar TF 0.2956 0.5256 0.0404 0.1706 0.3033 0.0233 0.2197 0.3906 0.0300 0.0902 0.1604 0.0123 0.1750 0.3112 0.0239 0.1465 0.2604 0.0200 0.0152 0.0270 0.0021 0.0839 0.1493 0.0115 0.335147 0.75840 0.04840 16B TI Apr-Oct TI Nov-Mar TF 0.3251 0.5780 0.0444 0.2438 0.4335 0.0333 0.3045 0.5415 0.0416 0.1759 0.3128 0.0240 0.2616 0.4653 0.0357 0.2340 0.4161 0.0320 0.0839 0.1493 0.0115 0.0000 0.0000 0.0000 0.251208 0.609187 0.03695 17 TI Apr-Oct TI Nov-Mar TF 0.6564 1.1672 0.0897 0.5608 0.9973 0.0766 0.6108 1.0862 0.0834 0.4635 0.8242 0.0633 0.3304 0.5876 0.0451 0.3402 0.6050 0.0465 0.2608 0.4637 0.0356 0.3751 0.6670 0.0512 0.251208 0.609187 0.03695 NOTE:MID 16A represents the 14 county area south of the Market/Field demarcation point. MID 16B represents the Field/Market demarcation point. MID 17 represents the Market area. NOTE:The MID rates include: (1) the appropriate Market Area Commodity rate for deliveries to MID 17; (2) the applicable Market Area Electric Compression surcharge as set forth on Sheet Nos. 50 through 52 for deliveries to MID 17; and (3) the applicable Field Area Electric Compression surcharge as set forth on Sheet Nos. 50 through 52 for deliveries to MIDs 1 - 16A. In addition, where applicable, Shipper shall pay the ACA unit surcharge as posted on FERC’s website at http://www.ferc.gov and the Carlton surcharge. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Sixth Revised Sheet No. 61 Superseding Fifth Revised Sheet No. 61 MILEAGE INDICATOR DISTRICTS FUEL PERCENTAGES DELIVERY DISTRICT RECEIPT DISTRICT 1 2 3 4 5 6 7 7B 8 1 ML Fuel 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.97% 2.80% 2 ML Fuel 0.00% 0.00% 0.88% 0.88% 0.00% 0.00% 0.88% 0.97% 2.80% 3 ML Fuel 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.97% 2.80% 4 ML Fuel 0.88% 0.88% 0.88% 0.88% 0.00% 0.88% 0.88% 0.97% 2.80% 5 ML Fuel 0.88% 0.88% 0.88% 0.88% 0.00% 0.88% 0.88% 0.97% 2.80% 6 ML Fuel 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.97% 2.80% 7 ML Fuel 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.97% 2.80% 7B ML Fuel 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.00% 1.83% 8 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 9 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 10 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 11 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 12 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 13 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 14 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 15 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 16A ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 1.92% 1.83% 16B ML Fuel 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.00% 1.83% 17 ML Fuel 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.88% 0.00% 1.83% 1 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 1.01% 2.05% 2 ML Fuel 0.00% 0.00% 0.76% 0.76% 0.00% 0.00% 0.76% 1.01% 2.05% 3 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 1.01% 2.05% 4 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.00% 0.76% 0.76% 1.01% 2.05% 5 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.00% 0.76% 0.76% 1.01% 2.05% 6 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 1.01% 2.05% 7 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 1.01% 2.05% 7B ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.00% 1.04% 8 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 9 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 10 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 11 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 12 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Sixth Revised Sheet No. 61 Superseding Fifth Revised Sheet No. 61 13 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 14 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 15 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 16A ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 1.29% 1.04% 16B ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.00% 1.04% 17 ML Fuel 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.76% 0.00% 1.04% Note:ML Fuel percentages include the unaccounted-for percent as set forth on Sheet No. 54. Northern will adjust its fuel percentages in accordance with Section 53 of the General Terms and Conditions of this Tariff. In recognition of all to-and-through transactions where gas is nominated and scheduled for delivery first to the Bushton inlet at POI 1708 in MID 16A and then subsequently delivered to other delivery points on Northern's system, the UAF percent will be zero on deliveries to the Bushton inlet (POI 1708); and the fuel will be zero from the Bushton outlet (POI 1707) to MID 16B. Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Twelfth Revised Sheet No. 62 Superseding Eleventh Revised Sheet No. 62 MILEAGE INDICATOR DISTRICTS FUEL PERCENTAGES DELIVERY DISTRICT RECEIPT DISTRICT 9 10 11 12 13 14 15 16A 16B 17 1 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.89% 3.94% 2 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.89% 3.94% 3 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.89% 3.94% 4 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.89% 3.94% 5 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.89% 3.94% 6 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.89% 3.94% 7 ML Fuel 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.80% 2.89% 3.94% 7B ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.92% 2.97% 8 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.92% 2.97% 9 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.92% 2.97% 10 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.92% 2.97% 11 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.92% 2.97% 12 ML Fuel 1.83% 1.83% 1.83% 0.00% 1.83% 0.00% 1.83% 1.83% 1.92% 2.97% 13 ML Fuel 1.83% 1.83% 1.83% 0.00% 1.83% 0.00% 1.83% 1.83% 1.92% 2.97% 14 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.92% 2.97% 15 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.92% 2.97% 16A ML Fuel 1.83% 1.83% 1.83% 0.00% 0.00% 0.00% 0.00% 0.00% 1.92% 2.97% 16B ML Fuel 1.83% 1.83% 1.83% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 1.05% 17 ML Fuel 1.83% 1.83% 1.83% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 1.05% 1 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 2 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 3 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 4 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 5 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 6 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 7 ML Fuel 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.05% 2.30% 2.75% 7B ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 8 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 9 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 10 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 11 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 12 ML Fuel 1.04% 1.04% 1.04% 0.00% 1.04% 0.00% 1.04% 1.04% 1.29% 1.74% Issued On: February 1, 2016 Effective On: April 1, 2016 Northern Natural Gas Company FERC Gas Tariff Sixth Revised Volume No. 1 Twelfth Revised Sheet No. 62 Superseding Eleventh Revised Sheet No. 62 13 ML Fuel 1.04% 1.04% 1.04% 0.00% 1.04% 0.00% 1.04% 1.04% 1.29% 1.74% 14 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 15 ML Fuel 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.04% 1.29% 1.74% 16A ML Fuel 1.04% 1.04% 1.04% 0.00% 0.00% 0.00% 0.00% 0.00% 1.29% 1.74% 16B ML Fuel 1.04% 1.04% 1.04% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.45% 17 ML Fuel 1.04% 1.04% 1.04% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.45% Note:ML Fuel percentages include the unaccounted-for percent as set forth on Sheet No. 54. Northern will adjust its fuel percentages in accordance with Section 53 of the General Terms and Conditions of this Tariff. In recognition of all to-and-through transactions where gas is nominated and scheduled for delivery first to the Bushton inlet at POI 1708 in MID 16A and then subsequently delivered to other delivery points on Northern's system, the UAF percent will be zero on deliveries to the Bushton inlet (POI 1708); and the fuel will be zero from the Bushton outlet (POI 1707) to MID 16B. Issued On: February 1, 2016 Effective On: April 1, 2016