Quality Information

Pipeline: Black Hills Shoshone Pipeline, LLC
Location: Lane No. 9

Gas Day Sort ascending Gas Temp Pressure psig Methane Mole % Ethane Mole % Propane Mole % i-Butane Mole % n-Butane Mole % i-Pentane Mole % n-Pentane Mole % C6+ Mole % Nitrogen Mole % Oxygen Mole % CO2 Mole % H2O (lbs/mmscf) H2S (grains) Specific Gravity (Dry) Heating Value BTU (Dry) Wobbe Calculation
12/02/2016 43 F 573 963445 0.602 0.152 0.025 0.034 0.011 0.009 0.008 1.423 NA 1.292 NA NA 0.579 995.96 1308.89
11/07/2016 55 F 574 93.739 2.128 0.592 0.1 0.13 0.03 0.016 0.008 2.604 NA 0.654 NA NA 0.592 1013.5 1316.79
10/06/2016 62 F 575 95.103 1.243 0.354 0.061 0.078 0.016 0.009 0.006 1.606 NA 1.524 NA NA 0.588 1001.67 1305.95
09/04/2016 72 F 572 95.585 1.046 0.281 0.043 0.061 0.014 0.011 0.009 1.584 NA 1.367 NA NA 0.585 1000.17 1308.11
08/04/2016 74 F 571 95.419 1.268 0.38 0.053 0.07 0.012 0.006 0.005 1.295 NA 1.492 NA NA 0.587 1005.15 1311.93
07/06/2016 66 F 573 94.378 2.346 0.625 0.101 0.124 0.025 0.014 0.009 1.334 NA 1.046 NA NA 0.592 1024.34 1331.1
06/03/2016 58 F 546 94.497 2.223 0.528 0.076 0.082 0.013 0.005 0.004 1.361 NA 1.212 NA NA 0.591 1017.63 1323.83
05/09/2016 52 F 575 96.124 0.677 0.199 0.028 0.037 0.007 0.005 0.007 1.303 NA 1.613 NA NA 0.582 995.09 1303.92
04/05/2016 76 F 434 86.205 7.168 2.042 0.247 0.311 0.039 0.019 0.003 2.342 NA 1.625 NA NA 0.644 1076.83 1341.43
03/03/2016 99 F 467 86.5 7.13 2.009 0.249 0.315 0.041 0.02 0.008 2.194 NA 1.533 NA NA 0.643 1076.83 1342.89

Gas samples taken monthly by Black Hills Shoshone Pipeline, LLC, when there is gas flow from the CIG Silvertip receipt point and delivery to the Lane No. 9 - Cody delivery point.

Polychlorinated Biphenyl (PCB) is listed as a contaminant in Section 9.2(c)(v) of Black Hills Shoshone’s FERC Tariff. However, at this time, based on the quality of gas delivered to its pipeline, Black Hills Shoshone does not collect information to quantify the Polychlorinated Biphenyl (PCB) content in natural gas flowing on its system. As a result, Black Hills Shoshone’s posted gas quality information does not include details on PCB content.

Calculations / Methods:  Real gas, 14.73 psia @ 60°F