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Our look at the
Near the Marshall County, WV & Greene County, Penna. border

> Introduction
> RMP (Risk Management Plan)
> Aerial photos of Majorsville - October 12, 2013
> Project Mariner Overview
> CONSOL Press Release
> NiSource Press Release
> VIDEO: 5 Minutes over Majorsville
> Aerial Photos of Majorsville Plant     > More Images

With rapidly increasing production of Marcellus and Utica Shale gas in Pennsylvania, West Virginia and Ohio, MarkWest Liberty built a gas processing plant next to an existing Columbia Gas Transmission compressor station in Majorsville, near the state line between Pennsylvania and the West Virginia panhandle.  Columbia Gas Transmission is a subsidiary of NiSource. Initial hydrocarbon liquids produced at the Majorsville plant were transported via pipeline to MarkWest Liberty’s Houston, Pennsylvania cryogenic gas plant.

Fractionators line the sky at Majorsville
March 24, 2014

MarkWest Liberty plans to install an approximate 37,000 barrel per day fractionation facility at the Houston complex, as well as transportation, storage, and marketing infrastructure, in order to sell hydrocarbon liquids to high-value markets in the northeastern United States and other countries.

Fractionators at Majorsville

In September 2009, MarkWest Liberty announced agreements with Chesapeake Appalachia, L.L.C. and Statoil Natural Gas L.L.C. to process their gas at MarkWest Liberty’s new Majorsville processing plant. The gas produced by Chesapeake and Statoil will be gathered using the Columbia Gas Transmission infrastructure.

Majorsville Gasv Plant


Majorsville Gas Plant
1700 Majorsville Road
Dallas, WV  26036
Marshall County, WV

January 30, 2014
Press Release Excerpt

MarkWest Energy Partners, L.P. (MWE) (“MarkWest”) (the “Partnership”) announced today an operational update regarding the development of midstream infrastructure projects in the liquids-rich areas of the Marcellus and Utica Shales. In the last four months, MarkWest has commenced operations of seven major infrastructure projects in the Northeast including five new cryogenic processing plants totaling 1 billion cubic feet per day (Bcf/d) of capacity and two fractionation facilities totaling 98,000 barrels per day (Bbl/d) of C2+ fractionation capacity. MarkWest continues to expand its leading midstream presence throughout the Northeast and currently has 17 major processing and fractionation projects under construction. These projects are occurring at nine locations in Ohio, Pennsylvania, and West Virginia and are expected to increase the Partnership’s total processing capacity to approximately 4.7 Bcf/d and total fractionation capacity in the region to over 400,000 barrels per day (Bbl/d).

In the Marcellus Shale, the Partnership commenced operations of three new processing plants during the fourth quarter of 2013. These new plants were commissioned at the Majorsville, Mobley, and Sherwood complexes and have increased MarkWest’s total processing capacity in the liquids-rich corridor of the Marcellus to over 2.2 Bcf/d. At the Majorsville complex in Marshall County, West Virginia, MarkWest increased total capacity to 670 million cubic feet per day (MMcf/d) with the addition of Majorsville V, a 200 MMcf/d plant to support Chesapeake Energy Corporation (CHK) and Statoil ASA (STO). At the Mobley complex in Wetzel County, West Virginia, MarkWest increased total capacity to 520 MMcf/d with startup of Mobley III, a 200 MMcf/d plant to support rapidly growing rich-gas production from EQT Corporation (EQT) and Magnum Hunter Resources Corporation (MHR). At the Sherwood complex in Doddridge County, West Virginia, MarkWest expanded total capacity to 600 MMcf/d after bringing online Sherwood III, a 200 MMcf/d to support Antero Resources Corporation’s (AR) (Antero) extensive Marcellus development program.

In early December 2013, MarkWest doubled its purity ethane fractionation capacity in the Marcellus to 76,000 Bbl/d with the startup of its second de-ethanization facility. The new facility is located at the Majorsville complex and will provide the Partnership’s producer customers’ with the ability to consistently meet residue gas quality specifications and deliver downstream ethane pipeline commitments. In conjunction with the commencement of de-ethanization services at Majorsville, MarkWest’s previously announced Liberty Ethane Pipeline became operational. The Liberty Ethane Pipeline transports purity ethane from the Majorsville complex to the Houston complex in Washington County, Pennsylvania. Once delivered at Houston, the purity ethane has direct access to multiple, major ethane takeaway projects including, Mariner West and ATEX, which began operations in December, and Mariner East, which is scheduled to come online in 2014. MarkWest is the first midstream operator in the Northeast to offer its producer customers the ability to recover and produce purity ethane and provide transportation infrastructure to all announced ethane pipeline takeaway projects. Ethane produced in the Northeast has the potential to become a key driver for the future expansion of the global petrochemical industry.

In the Utica Shale, MarkWest Utica EMG, L.L.C. (“MarkWest Utica EMG”) a joint venture between MarkWest and The Energy & Minerals Group (EMG) commenced operations of the Seneca complex in Noble County, Ohio. The Seneca complex is currently comprised of two processing plants totaling 400 MMcf/d, which support rich-gas Utica production from Antero, PDC Energy, Inc. (PDCE), Rex Energy Corporation (REXX), and others. The Seneca complex is MarkWest Utica EMG’s second large-scale processing complex in the Utica Shale and represents the southernmost assets included in its fully-integrated midstream system spanning a five-county region of eastern Ohio. The system is comprised of hundreds of miles of low- and high-pressure gathering pipeline, nearly 600 MMcf/d of gas processing services, natural gas liquids (NGL) transportation infrastructure, and most recently, a new world-class NGL fractionation facility.

In January 2014, MarkWest Utica EMG and the Partnership commenced operations of the jointly-owned Hopedale fractionation and marketing complex in Harrison County, Ohio. The complex’s 60,000 Bb/d propane and heavier fractionation plant, associated purity product storage capacity and marketing logistics terminal capabilities are critical midstream assets in the heart of one of the most prospective resource plays in the United States. In conjunction with the startup of the Hopedale complex, MarkWest commenced operations of a pipeline connecting its Marcellus and Utica NGL infrastructure. By integrating two industry-leading midstream systems, MarkWest will be able to effectively expand fractionation services for its Marcellus producers, while simultaneously delivering unrivaled reliability and optionality for producers in the Utica.

“We are exceptionally proud to continue expanding our essential midstream services on behalf of producers operating in the Marcellus and Utica,” commented Frank Semple, Chairman, President, and Chief Executive Officer of MarkWest. “The completion of one billion cubic feet of new processing capacity and nearly one-hundred thousand barrels per day of added fractionation services over the last four months is a testament to the extraordinary pace of U.S. energy production occurring in the Northeast shales. MarkWest is committed to creating long-term partnerships, developing unique solutions, and the required infrastructure needed to ensure that our customers remain at the forefront of domestic energy production for decades to come.”

MarkWest Energy Partners, L.P. is a master limited partnership engaged in the gathering, processing and transportation of natural gas; the gathering, transportation, fractionation, storage and marketing of natural gas liquids; and the gathering and transportation of crude oil. MarkWest has a leading presence in many unconventional gas plays including the Marcellus Shale, Utica Shale, Huron/Berea Shale, Haynesville Shale, Woodford Shale and Granite Wash formation.

This press release includes “forward-looking statements.” All statements other than statements of historical facts included or incorporated herein may constitute forward-looking statements. Actual results could vary significantly from those expressed or implied in such statements and are subject to a number of risks and uncertainties. Although MarkWest believes that the expectations reflected in the forward-looking statements are reasonable, MarkWest can give no assurance that such expectations will prove to be correct. The forward-looking statements involve risks and uncertainties that affect operations, financial performance, and other factors as discussed in filings with the Securities and Exchange Commission (SEC). Among the factors that could cause results to differ materially are those risks discussed in the periodic reports filed with the SEC, including MarkWest’s Annual Report on Form 10-K for the year ended December 31, 2012 and our Quarterly Report on Form 10-Q for the quarter ended September 30, 2013. You are urged to carefully review and consider the cautionary statements and other disclosures made in those filings, specifically those under the heading “Risk Factors.” MarkWest does not undertake any duty to update any forward-looking statement except as required by law.

The Energy & Minerals Group is the management company for a series of specialized private equity funds. EMG focuses on investing across various facets of the global natural resource industry including the upstream and midstream segments of the energy complex. EMG has approximately $8.4 billion of total investor commitments (including co-investments) with approximately $5.2 billion allocated across the energy sector since inception.


Majorsville Plant
RMP (Risk Management Plan)

August 14, 2012 excerpt
Source: Right-to-Know Network


The Majorsville Gas Plant processes raw gas from several field gathering systems. Natural gas is brought into the plant where it will first pass through a coalescer to remove liquid droplets from the gas stream. The gas is then passed through the molecular sieve to remove entrained water vapor. Next, the gas is passed through a chiller to reduce the temperature of the gas to approximately -10F after which it will pass through a separator which removes the liquid portion. After the chilling and separation the gas goes through a turbo expander to quickly reduce the gas pressure, which causes additional heavy particles to become liquid and drop from the gas stream. Finally, the gas is put through the deethanizer tower to remove ethane from the stream. The residue gas is then sent into a sales pipeline and the collected liquids are piped to the Houston Gas Plant in Washington County, Pennsylvania.

Flammable mixtures at the site are present in the surge tank which is used to ensure that a constant flow can be sent through the pipeline to the Houston Gas Plant. The liquids are considered to be Y-grade. The release scenarios breakdown the constituents of flammable materials in the Y-grade based on a condensate analysis taken from the surge tank.

Determination of Worst-Case and Alternative-Case Scenarios: The 49,436 gallon Y-grade tank was considered the worst-case scenario. The 30,000 gallon Y-grade tank was considered as the alternative-case scenario.

Potential Offsite Consequence Flammable Amount Total (lbs) - 380,000

Total Weight of Flammable Mixture - Ethane + Propane + Butane + Pentane = 9,504 + 223,890 + 106,206 + 48,823 = 388,423 lbs


November 3, 2010 Dug East Presentation
Source: MarkWest Energy Partners, LP and The Energy & Minerals Group

Majorsville Processing Complex
Majorsville I 120 MMcf/d
Majorsville II (3Q11) 150 MMcf/d
NGL Pipeline to Houston



Project Mariner Overview

A purity-ethane project to the Gulf Coast will maximize producer economics

  • MarkWest Liberty will modify the Houston and Majorsville plants to recover ethane.
  • MarkWest Liberty will construct a 45-mile liquid ethane pipeline.
  • Sunoco Logistics will convert its existing 250-mile, 8-inch refined products pipeline running across Pennsylvania to liquid ethane service. The pipeline will have a capacity of approximately 50,000 bbl/day.
  • Sunoco Logistics will construct refrigerated ethane store facilities and load it onto refrigerated LPG carriers. LPG carriers will transport the ethane to Gulf Coast markets.
  • The Mariner Project will be operational in 2012.

CONSOL and MarkWest to boost Majorsville production

January 31, 2012 - PRESS RELEASE
Source: PRNewswire

PITTSBURGH, Jan. 31, 2012 /PRNewswire via COMTEX/ -- CONSOL Energy Inc., the leading diversified fuel producer headquartered in the Eastern U.S., today announced that the company recently amended a previous agreement with MarkWest Energy Partners, LP. Under the amendment, CONSOL Energy, through a subsidiary, contracted for the full 200,000 Mcf per day of capacity in MarkWest's Majorsville III plant. This will be in addition to the 30,000 Mcf per day that the company already had under contract in MarkWest's Majorsville II processing plant.

There are associated agreements covering the fractionation and sale of the NGLs out of MarkWest's Houston, PA fractionation and marketing complex. At the close of the joint venture agreement between CONSOL Energy and Noble Energy in 2011, these agreements were assigned in part to Noble Energy, but are expected to be split evenly by both companies at the end of January 2012. These agreements will enable Noble Energy to continue its development efforts in the wet gas portion of the joint venture acreage.

"This agreement is expected to enable CONSOL Energy and Noble Energy to accelerate and maintain long-term production in the wet portion of the Marcellus shale, and to keep us on track with the flexible drilling schedule we outlined when we partnered with Noble Energy last year," commented Randy Albert, Chief Operating Officer of CONSOL Energy's Gas division.

Top holes on two Majorsville drill pads have already been completed and the horizontal wells are currently being drilled. CONSOL Energy anticipates first production from this area in Q2 2012, also representing the company's first production from the wet area of its Marcellus acreage. By year-end 2012, CONSOL Energy and Noble Energy anticipate 20 well completions at Majorsville.

MarkWest's Majorsville plant sits in the center of the joint venture's Majorsville acreage, thus keeping gathering cost to a minimum. The residue gas from the plant will initially be sold into long-term firm transportation agreements that CONSOL Energy's subsidiary CNX Gas Company LLC has under contracts on Columbia Transmission and Texas Eastern Pipelines...


NiSource Midstream Services and MarkWest Liberty Midstream & Resources Announce Commencement of Majorsville Processing Complex

PRNewswire via COMTEX News Network

September 27, 2010 - PRESS RELEASE
Source: NiSource Gas Transmission & Storage

NiSource Gas Transmission & Storage unit NiSource Midstream Services (NMS), and MarkWest Liberty Midstream & Resources, L.L.C., a partnership between MarkWest Energy Partners, L.P. and The Energy & Minerals Group, today announced the commencement of operations of jointly developed natural gas gathering, processing, and transmission projects in Majorsville, West Virginia.

The Majorsville complex is the first integrated gathering and processing system serving Marcellus production in northern West Virginia and significantly augments the midstream infrastructure that NMS and MarkWest Liberty independently operate in southwest Pennsylvania. The gathering and processing facilities are fully contracted and will serve various producers, including affiliates of Chesapeake Energy Corporation, Chief Oil & Gas, CONSOL Energy/CNX Gas, Range Resources, and Statoil.

On August 1, 2010, NMS completed a re-functionalization of pipeline and compression assets in West Virginia and Pennsylvania, including the re-commissioning of the Majorsville compressor station. The pipeline and compression assets allow NMS to gather and deliver 88,000 dekatherms per day (Dth/d) of liquid-rich Marcellus gas production from Washington and Greene Counties in Pennsylvania and 250,000 Dth/d from Marshall, Wetzel, and Doddridge Counties in West Virginia to the new MarkWest Liberty Majorsville processing plant. Residue gas from the processing plant is currently delivered into the NGT&S interstate pipeline system and, in October, construction will begin on a pipeline to deliver residue gas to the Texas Eastern Windridge compressor that will provide significant additional outlet capacity to eastern markets. A January 2011 in-service date is planned.

On September 7, 2010, MarkWest Liberty commenced operations of a 120 million cubic feet per day (MMcf/d) cryogenic natural gas processing plant at the Majorsville complex and a 35-mile natural gas liquids (NGL) pipeline that connects the Majorsville complex to MarkWest Liberty's midstream complex in Houston, Pennsylvania, where NGLs are fractionated, transported, stored, and marketed into high-value markets in the northeastern United States.

In 2011, MarkWest Liberty plans to expand its cryogenic processing capacity at the Majorsville complex to 270 MMcf/d. Concurrently, the Houston cryogenic processing capacity will be expanded from 155 MMcf/d to 355 MMcf/d. To accommodate the significant increase in NGL production resulting from the processing expansions, MarkWest Liberty is constructing fractionation capacity of 60,000 barrels per day, which will allow for the production of commercial iso-butane, normal butane, and natural gasoline in addition to the current capabilities of producing purity propane. When combined with an existing 24,000 barrel per day fractionation, storage, and marketing facility near Portsmouth, Ohio, MarkWest's combined NGL infrastructure in the Marcellus and Appalachian basin will include nearly 85,000 barrels per day of fractionation, storage, and marketing capacity.

"With the commencement of the Majorsville processing complex, producers in the Marcellus Shale region will now have access to the additional capacity they have long needed to move their gas to downstream markets," said Christopher A. Helms, executive vice president and group CEO for NGT&S. "A significant initiative for NGT&S is to offer new solutions to customers for transportation of supplies to valuable markets, and our joint project with MarkWest Liberty is a great example of this. We will continue our strategy of disciplined investment in growth projects to adapt our system to provide critical services to our customers."

"We are pleased to jointly announce with NiSource Midstream Services the commencement of the Majorsville gathering, processing, and transmission complex," commented Frank Semple, Chairman, President and Chief Executive Officer of MarkWest. "MarkWest Liberty is the largest provider of midstream services in the Marcellus and we continue to invest a significant amount of capital to provide the critical midstream infrastructure necessary to economically develop this world-class resource. The Majorsville expansion further demonstrates MarkWest Liberty's commitment to develop the facilities required to meet our producer customers' long-term needs."

For more information about NiSource Gas Transmission & Storage, please visit

As units of NiSource, Inc., the NGT&S companies include Columbia Gas Transmission, Columbia Gulf Transmission, Crossroads Pipeline, Hardy Storage, Millennium Pipeline and NiSource Midstream Services. Combined, the companies operate about 15,000 miles of interstate natural gas pipeline and 37 storage fields, delivering over 1 trillion cubic feet of natural gas per year.

About NiSource

NiSource Inc. (NYSE: NI), based in Merrillville, Ind., is a Fortune 500 company engaged in natural gas transmission, storage and distribution, as well as electric generation, transmission and distribution. NiSource operating companies deliver energy to more than 3.8 million customers located within the high-demand energy corridor stretching from the Gulf Coast through the Midwest to New England. Information about NiSource and its subsidiaries is available via the Internet at NI-F

About MarkWest Energy Partners

MarkWest Energy Partners, L.P. is a master limited partnership engaged in the gathering, transportation, and processing of natural gas; the transportation, fractionation, marketing, and storage of natural gas liquids; and the gathering and transportation of crude oil. MarkWest has extensive natural gas gathering, processing, and transmission operations in the southwest, Gulf Coast, and northeast regions of the United States, including the Marcellus Shale, and is the largest natural gas processor in the Appalachian region.

About The Energy & Minerals Group

The Energy & Minerals Group is the management company for a series of private equity funds totaling in excess of $2 billion of commitments. EMG focuses exclusively on making direct investments across the natural resources industry in conjunction with experienced management teams focused on hard assets that are integral to existing and growing markets.

NiSource Forward-Looking Statements

This news release includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Those statements include statements regarding the intent, belief or current expectations of NiSource and its management. Although NiSource believes that its expectations are based on reasonable assumptions, it can give no assurance that its goals will be achieved. Readers are cautioned that the forward-looking statements in this news release are not guarantees of future performance and involve a number of risks and uncertainties, and that actual results could differ materially from those indicated by such forward-looking statements. Important factors that could cause actual results to differ materially from those indicated by such forward-looking statements include, but are not limited to, the following: weather; fluctuations in supply and demand for energy commodities; growth opportunities for NiSource's businesses; increased competition in deregulated energy markets; the success of regulatory and commercial initiatives; dealings with third parties over whom NiSource has no control; actual operating experience of NiSource's assets; the regulatory process; regulatory and legislative changes; the impact of potential new environmental laws or regulations; the results of material litigation; changes in pension funding requirements; changes in general economic, capital and commodity market conditions; and counter-party credit risk, and the matters set forth in the "Risk Factors" section in NiSource's 2009 Annual Report on Form 10-K and subsequent Quarterly Reports on Forms 10-Q, many of which risks are beyond the control of NiSource. NiSource expressly disclaims a duty to update any of the forward-looking statements contained in this release.

MarkWest Energy Partners Forward-Looking Statements

This press release includes "forward-looking statements." All statements other than statements of historical facts included or incorporated herein may constitute forward-looking statements. Actual results could vary significantly from those expressed or implied in such statements and are subject to a number of risks and uncertainties. Although MarkWest believes that the expectations reflected in the forward-looking statements are reasonable, MarkWest can give no assurance that such expectations will prove to be correct. The forward-looking statements involve risks and uncertainties that affect operations, financial performance, and other factors as discussed in filings with the Securities and Exchange Commission. Among the factors that could cause results to differ materially are those risks discussed in periodic reports filed with the SEC, including MarkWest's Annual Report on Form 10-K for the year ended December 31, 2009, and Quarterly Report on Form 10-Q for the quarter ended June 30, 2010. You are urged to carefully review and consider the cautionary statements and other disclosures made in those filings, specifically those under the heading "Risk Factors." MarkWest does not undertake any duty to update any forward-looking statement except as required by law.

SOURCE: NiSource Gas Transmission & Storage





September 2010
MarkWest and NiSource
Two lane road to Majorsville
Traveling the road to Majorsville
Take me home country roads
MarkWest-Liberty Midstream & Resources, L.L.C.
1700 Majorsville Road
Dallas, West Virginia  26036

GPS 39 57.810  -80 31.261

Midstream Services LLC
A NiSource Company
Approaching from the west on Majorsville Road


YouTube Tour of Majorsville
Fractionating column at center of photo
Huge flare tower
Top of the flare tower
Compressors and fractionating column
February 5, 2012
Majorsville WV gas plant
Majorsville West Virginia gas plant
February 2012
GPS 39 57.251 -80 31.111
Old gas plant with upgrades
Old gas compressor station toward right rear,
new gas processing facility to left
Wet gas processing
Wet gas processing equipment
to separate gas liquids
Electric substation
New electric substation construction
for the gas processing plant


October 12, 2013

Majorsville methane ethane butane pentane
wet gas refining
Majorsville refinery
shale gas plant expansion
Majorsville WV gas plant
wet gas processing


Propane trains

Compressor stations

Marcellus shale pipelines



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