The Mountaineer XPress project is approximately 150 miles of new pipeline with approximately 2.7Bcf per day of transportation capacity from existing and future points of receipt along or near CPG’s system, most of it located in West Virginia.

1. 1
Mountaineer XPress Project
Binding Open Season
March 27, 2015, through April 23, 2015
Providing firm transportation outlets for growing Marcellus and Utica Shale
production across Ohio, Southwestern Pennsylvania and West Virginia to higher
value and liquidity markets across Columbia Pipeline Group’s footprint
NOTICE OF BINDING OPEN SEASON: Columbia Gas Transmission, LLC (“TCO”), a wholly owned
subsidiary of Columbia Pipeline Group (“CPG”), is pleased to announce a binding open season for the
Mountaineer XPress Project (“MXP”) on TCO’s system. The MXP binding open season will commence at
9:00 AM CDT on March 27, 2015, and close at 4:00 PM CDT on April 23, 2015 (“Open Season”). TCO
previously held a non-binding open season for MXP that concluded on September 30, 2014, resulting in
binding commitments for most of the Project’s (defined below) design capacity.
PROJECT BACKGROUND: CPG’s TCO system continues to experience unprecedented Appalachian
production growth across its footprint in West Virginia, Southwestern Pennsylvania and Ohio. TCO’s
average day supply and market for 2014 was approximately 3.7 Bcf per day and is projected to grow to
approximately 8.0 Bcf per day by 2019. TCO has approximately 4.3 Bcf per day of projected post-2014
net supply growth, which is offset and balanced through CPG’s recently announced West Side, East Side,
Leach XPress and Rayne XPress, WB XPress, and Gulf XPress expansion projects that, in the aggregate,
will transport approximately 4.3 Bcf per day out of the Appalachian region to markets in western Ohio,
the mid-Atlantic, and Gulf Coast via related expansion projects on CPG’s Columbia Gulf Transmission
(“CGT”) system.
PROJECT OVERVIEW AND MAP: MXP will provide up to approximately 2.7 Bcf per day of firm
transportation capacity from existing or future points of receipt along or near TCO’s system, including
Clarington, Ohio, as well as very close proximity to most of the region’s third party processing plants
throughout Ohio, Southwestern Pennsylvania and West Virginia (see map below), with deliveries to the
TCO Pool; Leach, Kentucky, at an existing point of interconnection between TCO and CGT; and other
mutually agreeable points (e.g., Clarington pipeline interconnects). MXP facilities will include an
approximately 150 mile greenfield high pressure pipeline from TCO’s existing system at or near the
MarkWest Majorsville processing facility, continuing to at or near the MarkWest Sherwood processing
facility, and further to TCO’s existing SM System located between Broad Run and Leach, Kentucky,
including looping along TCO’s existing systems for approximately 2.2 Bcf per day; and various
modifications along TCO’s existing WB Line for approximately 500,000 Dth per day (collectively, the
“Project”).

2. 2
TCO has executed binding precedent agreements with anchor and non-anchor shippers that collectively
provide TCO sufficient support to move forward with the Project. The purpose of this Open Season is to
provide all interested parties the opportunity to bid on approximately 500,000 Dth per day of Project
capacity. The anticipated MXP in-service date is November 1, 2018, with potential interim service
beginning as early as the first half of 2018 for receipts along TCO’s WB Line.
ANCHOR SHIPPERS: MXP’s anchor shippers may enjoy certain benefits such as limited proration
exposure (consistently applied among the Anchor Shippers), favorable cost sharing terms, contract
extension rights, rights to pro-rated quantities of any interim service that may become available, and
other benefits negotiated on a not unduly discriminatory basis. A bidder in this Open Season may
qualify as an Anchor Shipper (defined below) by submitting a bid that includes the following minimum
terms:
• Ten year contract term for capacity from point(s) of receipt along TCO’s WB Line (“WB
Capacity”), provided however, that bidder’s aggregate requested capacity includes non-WB Line
point(s) of receipt equal to at least two times its WB Capacity, otherwise bidder’s term must be
at least fifteen years to obtain Anchor Shipper status; AND
• Minimum quantity of 300,000 Dth per day, regardless of whether the term is ten or fifteen
years.

3. 3
CONTRACT TERM: TCO reserves the right to reject any bids that provide a contract term of less than (i)
ten years, subject to the same receipt point(s) criteria reflected in the “Anchor Shippers” section above,
otherwise (ii) fifteen years.
PARTICIPATION IN THE OPEN SEASON: Interested parties wishing to submit a binding bid pursuant to
the terms and conditions of this Open Season must complete and sign a Service Request Form
(attached) before the close of the Open Season. Upon receipt of a bidder’s conforming and signed
Service Request Form, TCO will provide bidder with a precedent agreement and credit support
agreement that must be executed by bidder within thirty days of the close of the Open Season. If a
bidder does not execute a precedent agreement and credit support agreement by such deadline, TCO
reserves the right to reject bidder’s Service Request Form, cease negotiations with bidder, and
reallocate the associated capacity.
Bidders are responsible for securing their own transportation arrangements on pipeline or processing
facilities upstream and downstream of the designated receipt and delivery point(s), including ensuring
upstream connections are able to deliver gas to TCO at TCO’s prevailing line pressure, in accordance
with TCO’s FERC Gas Tariff.
By submitting and signing a Service Request Form, a bidder is committing to proceed in good faith to
negotiate and execute a binding precedent agreement with TCO, within thirty days of the close of the
Open Season, that incorporates the terms set forth in the bidder’s Service Request Form to the extent
such terms are acceptable to TCO.
AWARDING OF CAPACITY: CPG will accommodate shipper requests for capacity on each the MXP and
GXP1
projects by evaluating bids for the two projects together for the purposes of minimizing facility
costs, optimizing the combined use of capacity, and evaluating economics on a not unduly
discriminatory basis. Accordingly, while not required to participate on both MXP and GXP, bidders
desiring capacity on both MXP and GXP must submit a valid bid response in each respective open
season. After the close of this Open Season, TCO will allocate the Project’s capacity, and prorate, as
applicable, first to bidders who qualify as Anchor Shippers and then, if capacity is still available, to
bidders that did not qualify as Anchor Shippers. All bidders will be notified by TCO, no later than five
business days from the close of the Open Season, of their capacity allocation quantities, if any, and will
be required to execute a binding precedent agreement no later than thirty days after the close of the
Open Season. A bidder’s status as an Anchor Shipper will continue to apply even if the bidder’s capacity
falls below the minimum applicable quantity required to qualify as an Anchor Shipper due to any pro
rata allocation resulting from this Open Season.
1
CGT, a wholly owned subsidiary of Columbia Pipeline Group, is implementing a concurrent open season for its
Gulf XPress Project (“GXP”).

4. 4
PROJECT RATES: Estimated recourse rates will be determined at the conclusion of the Open Season
based on the facilities required to satisfy the firm service requests from bidders who have executed
binding precedent agreements. The indicative negotiated daily reservation rates for incremental
capacity from various receipt point locations to the Project’s delivery points are as follows:
Rates reflected on per Dth per day basis Deliveries to:
TCO Pool
Leach
KentuckyReceipts from :
Receipt Area 1 $ 0.450 $ 0.650
Receipt Area 2 - Majorsville $ 0.365 $ 0.565
Receipt Area 2 - Non-Majorsville $ 0.350 $ 0.550
Receipt Area 3 $ 0.250 $ 0.550
COMMODITY, FUEL AND SURCHARGES: In addition to the negotiated daily reservation rates above,
shippers will pay all applicable demand and commodity surcharges and fuel retainage under Rate
Schedule FTS as provided in TCO’s then effective FERC Gas Tariff, except for the Capital Cost Recovery
Mechanism surcharge that shippers will not pay. Deliveries to the TCO Pool will not incur any
commodity charges, commodity surcharges, or fuel.
CONSTRUCTION COST RISK SHARING: The Project’s precedent agreements will contain a mechanism
for each shipper to share in a portion of the Project’s risk of construction costs overruns or savings with
Anchor Shippers receiving more favorable cost sharing terms vs. non-Anchor Shippers on a not unduly
discriminatory basis.
RESERVATIONS OF RIGHTS: TCO reserves the right to reject any Service Request Form that (i) is not
received by the close of the Open Season, (ii) is not complete and conforming, (iii) contains delayed in-
service dates, partial year terms, or other contingencies, (iv) could adversely affect the economics or
operational viability of the Project, or (v) contains terms unacceptable to TCO. TCO also reserves the
right to immediately negotiate and enter into binding precedent agreements with bidders that have
previously bid in the non-binding open season or submitted a signed, complete and conforming Service
Request Form. Further, and without limiting their scope in any way, TCO explicitly reserves the right to
(i) conduct additional open seasons/reverse open seasons, (ii) determine or re-determine the size,
scope, and cost of the Project, (iii) not consider bids that do not provide a sufficient level of detail to aid
in the development of the Project, (iv) not consider bids that do not present CPG with sufficient
economic value, and (v) reject or accept bids or material it received after the close of this Open Season.
TCO’s decision to proceed with the Project is subject to the Project remaining economically viable
pursuant to the terms and conditions of the binding precedent agreements.

5. 5
SOLICITATION OF TURNBACK CAPACITY (REVERSE OPEN SEASON): Existing shippers on TCO desiring to
turn back capacity they believe may be used as a substitute to constructing new facilities are invited to
complete a Service Request Form and advise TCO of their desire to turn back capacity by checking the
appropriate space on the form. Such proposals must be completed and received by TCO no later than
ten business days after the commencement of the Open Season. TCO will evaluate proposals from
shippers to turn back firm transportation capacity under existing service agreements that may reduce
the amount of facilities otherwise required for the Project. However, in TCO’s sole discretion, any
capacity turn back proposal has to be compatible, economically accretive and directly offset Project
facilities that MXP proposes to modify to satisfy the Project’s requested capacity.
CONTACT INFORMATION: Interested parties should contact the following TCO personnel to discuss any
questions or to seek additional information about this Open Season:
Josh Gibbon
Director, Business Development
713-386-3718 (office)
713-882-3062 (cell)
jgibbon@nisource.com
or
Russ Mahan
Vice President, Business Development
713-386-3748 (office)
713-320-6732 (cell)
rmahan@nisource.com

6. 6
Mountaineer XPress Project
Binding Open Season
Service Request Form
Please return this Service Request Form by email on or before the dates listed below.
Reverse Open Season Project Open Season
April 13, 2015 April 23, 2015
To: jgibbon@nisource.com or rmahan@nisource.com
(Please include the phrase “Mountaineer XPress Project – Service Request Form” in the subject line)
Request for (Check One):
Project Capacity Turnback Capacity
Company:
Contact:
Title:
Address:
Telephone: Fax:
Email:
Service Commencement Date (month/day/year):
Contract Term: years

7. 7
Requested Firm Transportation Service Levels
Please express the amount of capacity desired in terms of Dth per day for each desired Primary Receipt
Point and each desired Primary Delivery Point.
Primary Receipt Point
or Meter
Primary Delivery Point
or Meter Maximum Daily Quantity
Daily negotiated
reservation rate or Project
recourse rate
__________________________________________
Signature of an authorized representative of bidder
By completing and signing this Service Request Form, subject to the acceptance of bidder’s request for
service and bidder’s receipt of notification from TCO of the quantities of capacity allocated to bidder,
bidder hereby agrees to enter into good faith negotiations with TCO toward execution of a binding
precedent agreement. If bidder has not executed a binding precedent agreement within thirty (30)
days of the close of this Open Season, then TCO reserves the right to reject bidder’s request for service
as set forth in this Service Request Form.