Utility - RNG Quality Standards Comparison

Utility - RNG Quality Standards Comparison

F Company

TransCanada Pipeline (Columbia PL)

Duke Energy Cincinnati Atmos Gas Pipeline Texas

Houston Gas Pipeline Texas

Southern Star Pipeline Kansas

Atlanta Gas Light (a Southern

Company)

Proposed by Piedmont Natural Gas

Standard Standard Proposed

BTU minimum 967 967 950 950 950 950 980

Moisture (mmcf) < 7 lb < 7 lb < 7 lb < 7 lb < 7 lb < 7 lb < 7 lb

Sulfur (mcf) 4 grain 5 grain 4 grain 4 grain 4 grain 1 grain

Nitrogen < 2 % < 2 %

Total Inerts 4% 4% 4% 5% 3%

Metals No Test No Test No Test No Test No Test No Test Metals Test

Temp (Min) ±140°F ±140°F ±140°F ±140°F ±140°F ±140°F ±140°F

Temp (Max ±120°F ±120°F ±120°F ±120°F ±120°F ±120°F ±120°F

Cost for New Receipt Point

Request/App 0 0 1000 0 0 Unknown

Interconnect Point Charge

Two 2" Taps 900+ PSI

$470,000

One 2" Tap

$275,000 One 3" Tap

$1,046,000 From $1,400,000 to

$2,000,000

EPS Exhibit 1

AGLR Gas Quality Guidelines – Landfill Gas and Bio-Gas

These are preliminary guidelines for consideration to help land fill operators evaluate their capabilities to connect to a AGLR (Company) natural gas pipeline as a supplier. They are preliminary and based on current ICC, legacy Nicor Gas and AGLC historic gas quality guidelines, AGLC Pipeline Supplier Tariffs, as well as the NGC+ White Paper and GTI Guidance Document for the Introduction of Landfill Gas Into Natural Gas Pipelines, and operating guidelines.

Heating Value Between 950 and 1050 Btu per cubic foot calculated on a dry basis at 60 degree Fahrenheit

Delivery Temperature

40

F

120

F

14.73 psi at 60 degree Fahrenheit CHDP Not greater than 25 degree F Interchangeability WOBBE 1234 and 1380

Oxygen Less than 0.5% by volumetric basis (meets AGL and Ill Admin code) Hydrogen Sulfite (H2S) Less than or equal to Y4 grain/ Ccf or 4 ppm on a volumetric basis Total Sulfur Less than or equal to 1 grain/ Ccf or 12 ppm on a volumetric basis Carbon Monoxide (CO) Not more than one tenth percent by volume (0.1%)

Carbon Dioxide (C02 ) Less than or equal to 1% by volumetric basis

Nitrogen Not more than 3% by volumetric basis Based on NG but should allow higher for Landfill gas.

Total Inerts Not more than 4% by volumetric basis Hydrogen Not more than 1% by volumetric basis

Dust, Gums & Solid Matter The gas shall be commercially free of dust, gums, gum-forming constituents, or other liquid or solid matter which might become separated from the gas in the course of transportation through pipelines.

Bacteria The gas, including any associated liquids, shall not contain any

microbiological organism, active bacteria or bacterial agent capable of causing or contributing to: (i) injury to Company's pipelines, meters, regulators, or other facilities and appliances through which Customers' gas flows or (ii) interference with the proper operation of the Company facilities. Microbiological organ isms, including, but not limited to sulfate reducing bacteria (SRB) and acid producing bacteria (ACB), when considered as a possibility, shall be tested for their existence utilizing the American Petroleum Institute test method API-R38 or other acceptable test method as determined by both parties.

Organic Silicon (Siloxanes) Total Organic Silicon (siloxanes) shall not be greater than 0.40 mg of SJ/Nm³

Odorization Masking/Fading Agents (VOC)

The gas shall be free of agents, compounds or the like which will interfere with the process of the human olfactory process in the recognition of odorized natural gas through bonding with the odorant or causing interference with the human olfactory senses.

VOC The gas shall be free from any halogenated compounds that when, through the process of combustion, form dioxins.

GENERAL TERMS AND CONDITIONS

The Company may accept natural gas, landfill gas, or bio-gas which differs from the quality specifications set forth above until such time as the Company, in its reasonable discretion and judgment, determines that gas received for transportation must conform to the quality

specifications set forth above to maintain desired standards in and/or prudent operation of the Company’s gas' system. Upon such a determination, the Company will notify Customer that all prospective deliveries must comply with the quality specifications set forth above or the provisions of Section 4.2 below shall be applicable to all natural gas tendered for transportation which does not so comply. The Company will not permit deviation from the quality standards set forth above if such deviation will adversely impact the quality of service to any other customer

If, at any time, gas tendered by Customer for transportation or by the Company after

transportation shall fail to substantially conform to any of the applicable quality specifications and the Company notifies the delivering party of such deficiency and the delivering party fails to remedy any such deficiency within a reasonable period of time, the Company may, at its option, refuse to accept delivery pending correction of the deficiency by the delivering party. In the alternative, the Company may continue to accept delivery and make such changes necessary to cause the gas to conform to such specifications, in which event the delivering party shall reimburse the Company for all reasonable expenses incurred by the Company in effecting such changes. Failure by either The Company or Customer to tender deliveries that conform to any of the applicable quality specifications shall not be construed to eliminate, or limit in any manner, the rights and obligations existing under any other provisions of the executed Transportation Service Agreement and shall not limit the Company's right to refuse to accept deliveries from any Shipper that fail to conform to applicable quality specifications at any time.

In the event that the Company’s acceptance of gas which does not comply w ith the quality standards contained herein results in the diminution in quality, quantity, or economic value of gas transported for others, Customer who injects or causes to be injected such gas into the Company’s system shall be liable for any damage caused thereby, and such Customer shall indemnify the Company and save it harmless from all suits, actions, debts, accounts, damages, costs, losses, and expenses arising from or out of adverse claims of any and all persons related to said gas.

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Gas Quality Specification

Core Region Quality Specification -All APT system counties except Coke, Crane, Fisher, Jones, Glasscock, Midland, Mitchell, Nolan, Pecos, Reeves, Runnels, Scuny, Sterling, Taylor, Tom Green, Upton, and Ward counties (entire APT system gas quality specification until June 1, 2013)

1. Not more than 5 grains total sulphur per ccf

2. Not more than 1/4 grain H2S (hydrogen sulphide) per ccf 3. Not more than 1 grain mercaptan sulphur per ccf 4. Btu (minimum 950, maximum 1100) at 14.65 psi dry

5. Temperature (maximum +120 degrees F, minimum +40 degrees F) 6. Not more than 2% by volume C02 (carbon dioxide)

7. Not more than .05% by volume oxygen 8. Not more than 7# water vapor per Mmcf

9. Interchangeability (IF): ±7% from current gas supply JF =Btu divided by v relative density.

10. HydrocarbonDew Point not more than +40 degrees Fat delivery pressure 11. Not more than 4o/o by vo!ume total non.hydrocarbon and inert gases

Gas must be of merchantable quality, and commercially free from all water, sand and other objectionable fluids, bacteria, solids and gases.

West Region Qualfty Specification - Only the following APT system counties Coke, Crane, Fisher, Jones, Glasscock, Midland, Mitchell, Nolan, Pecos, Reeves, Runnels, Scurry, Sterling, Taylor, Tom Green, Upton, and Ward (effective June 1, 2013)

1. Not more than S grains total sulphur per ccf

2. Not more than 1/4 grain H2S (hydrogen sulphide) per ccf 3. Not more than 1 grain mercaptan sulphur per ccf 4. Btu (minimum 950, maximum 1100) at 14.65 psi dry

5. Temperature (maximum +120 degrees F, minimum +40 degrees F) 6. Not more than 2o/o by volume C02 (carbon dioxide)

7. Not more than 0.05% by volume oxygen 8. Not more than 7# water vapor per Mmcf

9. Interchangeability (IF): ±7% from current gas supply IF= Blu divided by v relative density.

10. HydrocarbonDew Point not more than +40 degrees Fat delivery pressure 11. Not more than 3o/o by volume total non·hydrocarbon and inert gases

Gas must be of merchantable quality, and commercially free from all water, sand and other objectionable Huids, bacteria, solids and gases.

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Southern Star Central Gas Pipeline, Inc.

FERC Gas Tariff Second Revised Sheet No. 207

Superseding First Revised Sheet No. 207 First Revised Volume No. l

GENERAL TERMS AND CONDITIONS

3. QUALITY

3.1 Gas Delivered

Gas delivered by Southern Star shall be of merchantable quality and shall have a system-wide weighted average heat content of not less than 950 Btus per cubic foot on a dry basis.

3.2 Gas Received

Unless otherwise specified in the executed Service Agreement, or arrangements acceptable to Southern Star to process, condition or treat non-conforming gas are made, all gas tendered to Southern Star at any receipt point hereunder shall conform to the following specifications:

(a) Liquids: The gas shall be free from hydrocarbons and water in their liquid state at the temperatures and pressures delivered and shall not have a hydrocarbon dew point in excess of fo1ty degrees Fahrenheit ( 40 deg. F) as calculated from a chemical analysis based upon an assumed pressure of seven hundred fifty (750) pounds per square inch absolute; provided, however, if and to the extent that Southern Star is operating its Line RI as a "wet" line, Southern Star may waive such hydrocarbon dew point quality specification for unprocessed gas received at Receipt Location 15433 - Satanta Plant and nominated for delivery to Delivery Location 19000 - LINN Jayhawk Delivery for processing.

(b) Hydrogen Sulfide and Total Sulfur: The gas shall contain not more than one quarter (l/4) grain of hydrogen sulfide per one hundred (IOO) cubic feet and not more than twenty (20) grains total sulfur per one hundred (I 00) cubic feet.

Issued On: November21, 2016 Effective On: November 21, 2016

Southern Star Central Gas Pipeline, Inc.

FERC Gas Tariff

First Revised Volume No. 1

GENERAL TERMS AND CONDITIONS 3. QUALITY (Cont'd)

Original Sheet No. 208

(c) Oxygen: The gas shall not contain in excess of two-tenths of one percent (0.2%) by volume of oxygen, and every reasonable effort shall be made to keep the gas completely free of oxygen.

(d) Carbon Dioxide: The gas shall contain not more than one percent (1%) by volume of carbon dioxide.

(e) Hydrogen: Gas from crude oil refineries shall contain no more than trace amounts of free hydrogen.

(f) Dust, Gums, etc.: The gas shall be commercially free of dust, gums, dirt, paraffin, impurities and other solid matter.

(g) Heating Value: The gas shall have a gross heating value of not less than nine hundred fifty (950) Btu's per cubic foot, assuming no water vapor.

The term "gross heating value" when applied to a cubic foot of gas shall mean the number ofBtu's produced by the complete combustion of the amount of the gas which would occupy a volume of one (1) cubic foot at 14.73 psia and a temperature of sixty degrees Fahrenheit (60 deg. F.).

(h) Temperature: The temperature of the gas at the receipt point shall not exceed one hundred twenty degrees Fahrenheit (120 deg F.).

(i) Water Vapor: Gas received in Kansas, Oklahoma, Missouri, or Texas shall not contain more than seven (7) pounds of water in vapor phase per million cubic feet and gas received in Colorado or Wyoming shall not contain more than five (5) pounds of water in vapor phase per million cubic feet, except for gas tendered to Southern Star at a receipt point where Southern Star owns and operates the equipment necessary to reduce the water vapor content of the gas to meet this requirement.

U) Notwithstanding the provisions of paragraphs (a) through (i) above, gas quality varies throughout segments of Southern Star's pipeline system based on the function of each segment. The quality of the gas delivered by Shipper to Southern Star must, in Southern Star's reasonable discretion, be compatible with the gas typically existing in the segment of Southern Star's pipeline into which Shipper makes delivery.

Issued On: June 1, 2010 Effective On: June 1, 2010