| 3 | 133 | Madden Transfer - Worland Compressor Station | Chromatograph | Includes customers located on the pipeline between the Madden Transfer and the Worland Compressor Station including customers on the Lake Creek Lateral. | Wyoming |
| 4 | 454 | Lovell Station-Worland Station | Chromatograph | Includes customers located on the pipeline between the Worland Compressor Station and the Lovell Compressor Station including customers on the Slick Creek Lateral. | Wyoming |
| 6 | 453 | Lovell Station-Lovell Border | Chromatograph | Includes Lovell Border and Western Sugar-Lovell. | Wyoming |
| 7 | 224 | Garland Transfer-Elk Basin Station-Lovell Station | Chromatograph | Includes Powell Border, Byron Border, Frannie Deaver Border, Wyo-Ben Lovell and customers located on the Powell 6" line north of the Garland transfer. | Wyoming |
| 8 | 035 | Kaycee (Black Hills) | Chromatograph | Depending upon operating conditions, may include Kaycee Border and customers located between Kaycee Border and the Billy Creek Compressor. Gas Quality is based upon average monthly composition of gas at Midwest WY, TBS as provided by Black Hills Gas Distributions, LLC. | Wyoming |
| 10 | 261 | Elk Basin Compressor Station-Laurel Border | Chromatograph | Includes Belfry Border, Bridger Border, Fromberg Border, Joliet Border and customers from the Elk Basin Compressor Station to the Yellowstone River transfer (Yellow line). | Montana |
| 11 | 611 | CHS Refinery-Laurel Frank Rd | Chromatograph | Includes CHS Refinery-Laurel Frank Rd | Montana |
| 12 | 2201010 | Rapelje Plant | Accumulated Sample | Includes Park City Border and customers on the Rapelje Plant line. | Montana |
| 13 | 261 | Laurel Border-Laurel River Crossing-Billings Border | Chromatograph | Includes Laurel Border, Billings Border and customers north of the Yellowstone River transfer. | Montana |
| 14 | 182 | Warren Transfer - Toluca | Chromatograph | Includes Pryor Border and customers on the Warren Transfer line to the Toluca Receipt Point. | Montana |
| 15 | 393 | Hardin Compressor Station - Hathaway Compressor Station | Chromatograph | Includes Hardin Compressor Station, Forsyth Border, Rosebud Border and customers located on the pipeline between the Hardin Compressor Station and Hathaway Compressor Station. | Montana |
| 16 | 052 | Cabin Creek Compressor Station - Hathaway Compressor Station | Chromatograph | Includes Miles City Border, Terry Border and customers located on the pipeline between the Cabin Creek Compressor Station and the Hathaway Compressor Station. | Montana |
| 17 | 022 | Belle Fourche Compressor Station - Belle Creek Junction | Chromatograph | Includes Belle Creek and customers located on the pipeline between the Belle Creek Junction and the Belle Fourche Compressor Station (Montana Accounts). | Montana |
| 17 | 022 | Belle Fourche Compressor Station - Belle Creek Junction | Chromatograph | Includes customers located on the pipeline between Belle Creek Junction and the Belle Fourche Compressor Station (South Dakota Accounts). | South Dakota |
| 18 | 011 | Baker Compressor Station - Marmarth Bowman Transfer | Chromatograph | Includes Baker Border and depending upon operating conditions, may include customers on the Marmarth/Bowman Lateral. | Montana |
| 19 | 1101020 | Baker Storage Field Unit 2 - Cabin Creek Compressor Station | Spot Sample | Includes customers located in the Baker Storage Field Unit 2. | Montana |
| 20 | 141 | Morgan Creek Compressor Station - Cabin Creek Compressor Station | Chromatograph | Includes Glendive Border and customers located on the pipeline between the Cabin Creek Compressor Station and the Morgan Creek Compressor Station. | Montana |
| 22 | 142 | Morgan Creek Compressor Station-Vida Compressor Station | Chromatograph | Includes Richey Border and customers located on the pipeline between the Vida Compressor Station and the Morgan Creek Compressor Station. | Montana |
| 24 | 571 | Williston Border - Charbonneau Station | Chromatograph | Includes Williston Border, Trenton Border, Springbrook Plant Fuel and customers located on the pipeline between the Springbrook Plant and Charbonneau Compressor Station (North Dakota Accounts). | North Dakota |
| 25 | 0602225 | Watford City West Border | Accumulated Sample | Includes Watford City West Border, Alexander Border and Arnegard Border. | North Dakota |
| 28 | 041 | Bismarck Compressor Station - Glen Ullin Compressor Station | Chromatograph | Includes Bismarck Border, Mandan Border, New Salem Border and customers located on the pipeline between the Bismarck Compressor Station and the Glen Ullin Compressor Station. | North Dakota |
| 31 | 271 | Dickinson Border-Belfield Transfer-Glen Ullin Station | Chromatograph | Includes Dickinson Border, South Heart Border, Taylor Border, Richardton Border, Hebron Border, Glenn Ullin Border and customers located on the pipeline between the Glen Ullin Compressor Station and Belfield transfer. | North Dakota |
| 32 | 051 | Cabin Creek Compressor Station - Belfield Transfer | Chromatograph | Includes Belfield Border, Beach Border and customers located on the pipeline between the Cabin Creek Compressor Station and the Belfield Transfer(North Dakota Accounts). | North Dakota |
| 32 | 051 | Cabin Creek Compressor Station - Belfield Transfer | Chromatograph | Includes Beach Border, Belfied Border and customers located on the pipeline between the Cabin Creek Compressor Station and the Belfield Transfer (Montana Accounts). | Montana |
| 33 | 111 | Little Knife Plant-Belfield Transfer | Chromatograph | Includes Killdeer Border. | North Dakota |
| 34 | 351 | Badlands Plant | Chromatograph | Includes Bowman Border and customers on the Bowman Lateral. | North Dakota |
| 36 | 021 | Belle Fourche Compressor Station - Little Beaver Compressor Station | Chromatograph | Includes Camp Crook Border and customer located on the pipeline between the Belle Fourche Compressor Station and the Little Beaver Compressor Station. | South Dakota |
| 37 | 741 | Deadwood Mainline Transfer - Rapid City Border | Chromatograph | Includes Rapid City Border and customers located on the pipeline between the Deadwood Mainline Transfer and the Rapid City Border. | South Dakota |
| 39 | 281 | Landeck - Baker Booster Junction | Chromatograph | Includes customers located on the pipeline between Landeck and the Baker Booster Junction on Grasslands (Montana Accounts). | Montana |
| 39 | 241 | Landeck - Baker Booster Junction | Chromatograph | Includes customers located on the pipeline between Landeck and the Baker Booster Junction (Wyoming Accounts). | Wyoming |
| 40 | 291 | Manning Compressor Station - Belfield Plant | Chromatograph | Includes customers located on the pipeline between the Manning Compressor Station and the Belfield Plant Receipt Point (North Dakota Accounts). | North Dakota |
| 41 | 301/302 | Baker Booster (301) or Sandstone Grasslands (302) - Baker Booster Lateral | Chromatograph | Depending upon operating conditions, may include any or all of the following: Customers located on the pipeline between the Baker Booster Compressor Station and the Baker Booster Lateral (Montana Accounts). | Montana |
| 42 | 057 | Cabin Creek Compressor Station-Baker Booster Lateral | Chromatograph | Includes customers located on the pipeline between the Baker Booster Lateral and the Cabin Creek Compressor Station. | Montana |
| 43 | 2702230 | Spring Creek I - Sax Valve I | Accumulated Sample | Includes Watford City East Border | North Dakota |
| 44 | 751 | Pioneer Station | Chromatograph | Includes Pioneer Station. | North Dakota |
| 91 | 032 | BHWG Billy Creek Receipt-Sheridan Border | Chromatograph | Depending upon operating conditions, may include any or all of the following: Kaycee Border and customers located between the BHWG-Billy Creek Receipt and Dry Ranch Transfer and Kaycee and the BHWG-Billy Creek Receipt. | Wyoming |
| 92 | 231 | Dry Ranch Transfer | Chromatograph | Depending upon operating conditions, may include any or all of the following: customers located between the BHWG-Billy Creek Receipt and Sheridan. | Wyoming |
| 137 | 023 | Belle Fourche Compressor Station – Dead Wood Main Line Transfer | Chromatograph | Includes Belle Fourche Border, Colony Lateral and customers on the pipeline between Belle Fourche Compressor Station and Deadwood Mainline Transfer (Red Line, South Dakota Accounts) | South Dakota |
| 137 | 023 | Belle Fourche Compressor Station – Dead Wood Main Line Transfer | Chromatograph | Includes Belle Fourche Border, Colony, and customers on the pipeline between Belle Fourche Compressor Station and Deadwood Mainline Transfer (Red Line, Wyoming Accounts) | Wyoming |
| 141 | 452 | Lovell Compressor Station - Warren Transfer | Chromatograph | Includes Cowley Border and customers located on the pipeline between the Lovell Compressor Station and the Warren transfer (Wyoming Accounts). | Wyoming |
| 142 | 076 | Elk Basin Compressor Station - Warren Transfer | Chromatograph | Includes customers located on the pipeline between the Elk Basin Compressor Station and the Warren transfer (Montana Accounts). | Montana |
| 151 | 391 | Hardin Station-Toluca | Chromatograph | Includes Hardin Border, Crow Agency and customers on the Hardin and Crow Agency laterals. | Montana |
| 191 | 1101000 | Baker Storage Field - North Units | Spot Sample | Includes customers located in the Baker Storage Field North Units 3-5. | Montana |
| 211 | 251 | Sidney Border-MonDak Transfer-Sidney Plant | Chromatograph | Includes Sidney Border, Holly Sugar-Sidney and customers located on the pipeline between the MonDak Transfer and Sidney Plant. | Montana |
| 212 | 143 | Morgan Creek Compressor Station to Mon-Dak Junction | Chromatograph | Includes Savage Border, Crane and customers located on the pipeline between the Morgan Creek Compressor Station and the Mon-Dak Junction. | Montana |
| 213 | 121 | McKenzie Plant-MonDak Transfer | Chromatograph | Includes Sidney Lewis & Clark Station and the customers located on the pipeline between the Sidney Lewis & Clark Station and the Mon-Dak Transfer (Montana Accounts). | Montana |
| 213 | 121 | McKenzie Plant-MonDak Transfer | Chromatograph | Includes Sidney Lewis & Clark Station and the customers located on the pipeline between the Sidney Lewis & Clark Station and the Mon-Dak Transfer (North Dakota Accounts). | North Dakota |
| 221 | 0801970 | Malta JK-Malta Border | Spot Sample | Includes Malta Border and the customers located on the pipeline between the JK take off and Malta Border | Montana |
| 222 | 0801960 | Bowdoin Whitewater | Spot Sample | Includes Whitewater Border | Montana |
| 223 | 0801961 | Bowdoin East | Spot Sample | Includes Saco Dehy | Montana |
| 224 | 761 | Saco Compressor Station - Vida Compressor Station | Chromatograph | Includes Glasgow Border, Wolf Point Border and customers located on the pipeline between Saco Compressor and Vida Compressor | Montana |
| 237 | 024 | Belle Fourche Compressor Station – Deadwood Main Line Transfer | Chromatograph | Belle Fourche Compressor to Deadwood Main Line Transfer (Yellow Line) | South Dakota |
| 241 | 0602160 | Fairview Border | Accumulated Sample | Includes Fairview Border and customers located on the pipeline between the Sidney Plant and the Charbonneau Compressor Station (Montana Accounts). | Montana |
| 241 | 0602160 | Fairview Border | Accumulated Sample | Includes customers located on the pipeline between the Sidney Plant and the Charbonneau Compressor Station (North Dakota Accounts). | North Dakota |
| 261 | 601 | Tioga Station - Robinson Lake Plant | Chromatograph | Includes Stanley Border and customers located on the pipeline between Tioga Compressor and the Robinson Lake Plant Receipt Point. | North Dakota |
| 262 | 091 | Minot Border - Palermo Border-Bismarck Compressor Station | Chromatograph | Includes Palermo Border, Des Lacs Border, Burlington Border, Minot Border, Minot AFB, Garrison Border, Wilton Border and customers located on the pipeline between the Palermo Border and the Bismarck Compressor Station. | North Dakota |
| 263 | 681 | Lignite Plant | Chromatograph | Includes customers located on the pipeline between the Lignite Plant and Many Island-Portal | North Dakota |
| 264 | 3002013 | Epping Border | Accumulated Sample | Includes Epping Border, Ray Border and customers located on the pipeline between the Ray Plant and Springbrook Plant. | North Dakota |
| 265 | 603 | Tioga Compressor Station - County Line Plant | Chromatograph | Includes customers located on the pipeline between the Tioga Compressor Station and the County Line Plant | North Dakota |
| 266 | 591 | County Line Plant | Chromatograph | Includes County Line Plant Fuel | North Dakota |
| 267 | 602 | Tioga Compressor Station - Nesson Plant | Chromatograph | Includes Tioga Border Station and customers between the Tioga Compressor Station and the Nesson Plant. | North Dakota |
| 268 | 691 | Tioga Compressor Station - Elkhorn Creek Compressor Station. | Chromatograph | Includes NBPL Delivery. | North Dakota |
| 271 | 043 | Bismarck Compressor Station - Cleveland Compressor Station | Chromatograph | Includes customers located on the pipeline between the Bismarck Compressor Station and the Cleveland Compressor Station. | North Dakota |
| 272 | 063 | Cleveland Compressor Station - Mapleton | Chromatograph | Includes customers located on the pipeline between the Cleveland Compressor Station and Mapleton. Depending upon operating conditions, may include customers located between the Cleveland Compressor Station and Felton. | North Dakota |
| 273 | 061 | Cleveland Compressor Station - Grafton Border | Chromatograph | Includes customers located on the pipeline between the Cleveland Compressor Station and the Grafton Border. | North Dakota |
| 274 | 641 | Felton(Viking) | Chromatograph | Includes Felton, Mapleton Compressor Station, Mapleton Transfer, and depending upon operating conditions, may include customers located between Felton and Valley City. Gas Quality is based on the composition of gas at the Viking interconnect, as provided by Viking Gas Transmission, Inc. (Minnesota) | Minnesota |
| 274 | 661/662 | Felton(Viking) | Chromatograph | Includes Felton, Mapleton Compressor Station, Mapleton Transfer, Kindred Border, Wahpeton Border, and depending upon operating conditions, may include customers located between Felton and Valley City, and Mapleton Compressor Station and Wahpeton. (North Dakota Accounts) | North Dakota |
| 291 | 2302101 | Buffalo Border Wyoming | Accumulated Sample | Includes Buffalo Border Wyoming Station | Wyoming |
| 292 | 232 | Sheridan Border | Chromatograph | Includes Sheridan Border Station | Wyoming |
| 431 | 581 | Wild Basin Plant - Cherry Creek Transfer | Chromatograph | Includes Wild Basin Plant Fuel | North Dakota |
| 432 | 551 | Garden Creek I Plant | Chromatograph | Includes Garden Creek I Plant Fuel | North Dakota |
| 433 | 561 | Garden Creek II Plant | Chromatograph | Includes Garden Creek II Plant Fuel | North Dakota |
| 434 | 621 | Bear Den | Chromatograph | Includes Bear Den Plant Fuel | North Dakota |
| 435 | 671 | Demicks Lake | Chromatograph | Includes Demicks Lake Plant Fuel | North Dakota |