Document:

Form of Omnibus Agreement

 Exhibit 10.4 
 OMNIBUS AGREEMENT 
 This Omnibus Agreement (“Agreement”)
is entered into on, and effective as of, the Closing Date among Marathon Petroleum Corporation, a Delaware corporation (“MPC”), on behalf of itself and the other MPC Entities, Marathon Petroleum Company LP, a Delaware limited
liability partnership (“MPCLP”), MPL Investment LLC, a Delaware limited liability company, MPLX LP, a Delaware limited partnership (the “Partnership”), MPLX GP LLC, a Delaware limited liability company (the
“General Partner”), and MPLX Pipe Line Holdings LP, a Delaware limited partnership (“Holdings”). 
 RECITALS 
 1. The Parties desire by their execution of this Agreement to
evidence their understanding, as more fully set forth in Article II, with respect to certain indemnification obligations of the Parties to each other. 
 2. The Parties desire by their execution of this Agreement to evidence their understanding, as more fully set forth in Article III, with respect to the amount to be paid by the Partnership for the
centralized corporate services to be performed by MPC and its Affiliates (including the General Partner) for and on behalf of the Partnership Group. 
 3. The Parties desire by their execution of this Agreement to evidence their understanding, as more fully set forth in Article IV, with respect to the granting of certain licenses between the
Parties. 
 In consideration of the premises and the covenants, conditions, and agreements contained herein, and for other good
and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties agree as follows: 

ARTICLE I 

Definitions 
 1.1 Definitions. As used in this Agreement, the following terms shall have the meanings set forth below: 
 “Administrative Fee” is defined in Section 3.2(a). 

“Affiliate” is defined in the Partnership Agreement. 

“Assets” means all gathering pipelines, transportation pipelines, storage tanks, underground storage caverns, barge
docks, pump stations, metering stations, vehicles, related equipment, offices, real estate, contracts and other assets, or portions thereof, conveyed, contributed or otherwise transferred or intended to be conveyed, contributed or otherwise
transferred pursuant to the Contribution Agreement to any Group Member, or owned by, leased by or necessary for the operation of the business, properties or assets of any Group Member as of the Closing Date. 

“Closing Date” means [            ], 2012.

 “Common Units” is defined in the Partnership Agreement. 

“Confidential Information” means any proprietary or confidential information that is competitively sensitive material or
otherwise of value to a Party or its Affiliates and not generally known to the public, including trade secrets, scientific or technical information, design, invention, process, procedure, formula, improvements, product planning information,
marketing strategies, financial information, information regarding operations, consumer and/or customer relationships, consumer and/or customer identities and profiles, sales estimates, business plans, and internal performance results relating to
the past, present or future business activities of a Party or its Affiliates and the consumers, customers, clients and suppliers of any of the foregoing. Confidential Information includes such information as may be contained in or embodied by
documents, substances, engineering and laboratory notebooks, reports, data, specifications, computer source code and object code, flow charts, databases, drawings, pilot plants or demonstration or operating facilities, diagrams, specifications,
bills of material, equipment, prototypes and models, and any other tangible manifestation (including data in computer or other digital format) of the foregoing; provided, however, that Confidential Information does not include information
that a receiving Party can show (A) has been published or has otherwise become available to the general public as part of the public domain without breach of this Agreement, (B) has been furnished or made known to the receiving Party
without any obligation to keep it confidential by a third party under circumstances which are not known to the receiving Party to involve a breach of the third party’s obligations to a Party or (C) was developed independently of
information furnished or made available to the receiving Party as contemplated under this Agreement. 
 “Contribution
Agreement” means that certain Contribution, Conveyance and Assumption Agreement, dated as of the Closing Date, among the General Partner, the Partnership, MPL Investment LLC and certain other MPC Entities, together with the additional
conveyance documents and instruments contemplated or referenced thereunder, as such may be amended, supplemented or restated from time to time. 
 “control” means the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of a Person, whether through ownership of voting
securities, by contract, or otherwise. 
 “Covered Environmental Losses” is defined in Section 2.1.

 “Employee Services Agreements” means, collectively, (a) that certain Employee Services Agreement, dated
as of [ l ], 2012, by and among the General Partner, Catlettsburg Refining LLC, a Delaware limited liability
company, and MPLX Terminal and Storage LLC, a Delaware limited liability company, and (b) that certain Employee Services Agreement, dated as of [ l ], 2012, by and among the General Partner, Marathon Petroleum Logistics Services LLC, a Delaware limited liability company, and Marathon Pipe Line LLC, a Delaware limited liability company.

 “Environmental Deductible” is defined in Section 2.6. 

  
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 “Environmental Laws” means all federal, state, and local laws, statutes,
rules, regulations, orders, judgments, ordinances, codes, injunctions, decrees, Environmental Permits and other legally enforceable requirements and rules of common law relating to pollution or protection of human health, natural resources, wildlife
and the environment or workplace health or safety including, without limitation, the federal Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended, 42 U.S.C. §§9601 et seq., the Resource
Conservation and Recovery Act of 1976, as amended, 42 U.S.C. §§6901 et seq., the Clean Air Act, as amended, 42 U.S.C. §§7401 et seq., the Federal Water Pollution Control Act, as amended, 33 U.S.C. §§1251
et seq., the Toxic Substances Control Act, as amended, 15 U.S.C. §§2601 et seq., the Oil Pollution Act of 1990, 33 U.S.C. §§2701 et seq., the Safe Drinking Water Act of 1974, as amended, 42 USC
§§300f et seq., the Hazardous Materials Transportation Act of 1994, as amended, 49 U.S.C. §§ 5101 et seq., and other environmental conservation and protection laws and the Occupational Safety and Health Act of 1970,
29 U.S.C. §§ 651 et seq, and the regulations promulgated pursuant thereto, and any state or local counterparts, each as amended from time to time. 
 “Environmental Permit” means any permit, approval, identification number, license, registration, certification, consent, exemption, variance or other authorization required under or
issued pursuant to any applicable Environmental Law, including applications for renewal of such permits in which the application allows for continued operation under the terms of an expired permit. 

“Governmental Authority” means any federal, state, tribal, foreign or local governmental entity, authority, department,
court or agency, including any political subdivision thereof, exercising, or entitled to exercise, any administrative, executive, judicial, legislative, police, regulatory or taxing authority or power of any nature, and including any arbitrating
body, commission or quasi-governmental authority or self-regulating organization of competent authority exercising or enlisted to exercise similar power or authority. 
 “Group Member” is defined in the Partnership Agreement. 

“Hazardous Substance” means (a) any substance, whether solid, liquid, gaseous, semi-solid, or any combination
thereof, that is designated, defined or classified as a hazardous waste, solid waste, hazardous material, pollutant, contaminant or toxic or hazardous substance, or terms of similar meaning, or that is otherwise regulated under any Environmental
Law, including, without limitation, any hazardous substance as defined under the Comprehensive Environmental Response, Compensation, and Liability Act, as amended, and including asbestos and lead-containing paints or coatings, and
(b) petroleum, oil, gasoline, natural gas, fuel oil, motor oil, waste oil, diesel fuel, jet fuel, and other refined petroleum hydrocarbons. 
 “Holdings Business” means the businesses and operations of Holdings and its Subsidiaries, including any Assets used in connection therewith. 

“Identification Deadline” means the fifth anniversary of the Closing Date. 

“Indemnified Party” means the Party entitled to indemnification in accordance with Article II. 

“Indemnifying Party” means the party from whom indemnification may be sought in accordance with Article II.

 “Limited Partner” is defined in the Partnership Agreement. 

“Losses” means any losses, damages, liabilities, claims, demands, causes of action, judgments, settlements, fines,
penalties, costs and expenses (including, without limitation, court costs and reasonable attorney’s and expert’s fees) of any and every kind or character, known or unknown, fixed or contingent. 

  
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 “Mediation Notice” is defined in Section 6.2(b). 

“MPC Entities” means MPC and any Person controlled, directly or indirectly, by MPC other than a Group Member.

 “MPC License” is defined in Section 4.1. 

“MPC Marks” is defined in Section 4.1. 

“MPLX License” is defined in Section 4.3. 

“MPLX Marks” is defined in Section 4.3. 

“MPLX Trademark” is defined in Section 4.3. 

“Non-Holdings Assets” means all Assets owned, directly or indirectly, by any Group Member other than Holdings and its
Subsidiaries. 
 “Partnership Agreement” means the First Amended and Restated Agreement of Limited Partnership
of MPLX LP, dated as of the Closing Date. 
 “Partnership Change of Control” means MPC ceases to
control the general partner of the Partnership. 
 “Partnership Group” is defined in the Partnership
Agreement. 
 “Party” means a signatory to this Agreement. 

“Person” means an individual or a corporation, firm, limited liability company, partnership, joint venture, trust,
unincorporated organization association, government agency or political subdivision thereof or other entity. 

“Representative” is defined in Section 6.1(a). 

“Retained Assets” means all pipelines, storage tanks, vehicles, truck racks, terminal facilities, offices and related
equipment, real estate, contracts and other related assets, or portions thereof owned by any of the MPC Entities that were not directly or indirectly conveyed, contributed or otherwise transferred to the Partnership Group pursuant to the
Contribution Agreement or the other documents referenced in the Contribution Agreement. 
 “Subsidiary” is
defined in the Partnership Agreement. 
 1.2 Rules of Construction. Unless expressly provided for elsewhere in this
Agreement, this Agreement shall be interpreted in accordance with the following provisions: 
 (a) If a word or phrase is
defined, its other grammatical forms have a corresponding meaning. 
  

  
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 (b) The headings contained in this Agreement are for reference purposes only and shall not
affect the meaning or interpretation of this Agreement. 
 (c) A reference to any Party to this Agreement or another agreement or
document includes the Party’s successors and assigns. 
 (d) The words “hereof,” “herein” and
“hereunder” and words of similar import when used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this Agreement, and article, section, subsection, schedule and exhibit references are to
this Agreement unless otherwise specified. 
 (e) The words “including,” “include,” “includes” and
all variations thereof shall mean “including without limitation.” 
 (f) The word “or” shall have the
inclusive meaning represented by the phrase “and/or.” 
 (g) The words “shall” and “will” have
equal force and effect. 
 (h) The schedules and exhibits identified in this Agreement are incorporated herein by reference and
made a part of this Agreement. 
 (i) References to “$” or to “dollars” shall mean the lawful currency of the
United States of America. 
 ARTICLE II 
 Indemnification 
 2.1 Environmental Indemnification. 

(a) Each of MPL Investment LLC and MPCLP, jointly and severally, shall indemnify, defend and hold harmless the Partnership Group from and
against any Losses suffered or incurred by the Partnership Group, directly or indirectly, by reason of or arising out of: 
 (i)
any violation of Environmental Laws in effect prior to the Closing Date; 
 (ii) any environmental event, condition or matter
associated with or arising from the ownership or operation of the Assets (including the presence of Hazardous Substances on, under, about or migrating to or from the Assets or the disposal or the release of Hazardous Substances generated by
operation of the Assets at non-Asset locations) including (A) the cost and expense of any investigation, assessment, evaluation, monitoring, containment, cleanup, repair, restoration, remediation, risk-based closure activities, or other
corrective action required or necessary under Environmental Laws and (B) the cost and expense of the preparation and implementation of any closure, remedial, corrective action, or other plans required or necessary under Environmental Laws in
effect prior to the Closing Date; and 

  
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 (iii) any environmental event, condition or matter associated with or arising from the
Retained Assets, whether occurring before, on or after the Closing Date and whether occurring under Environmental Laws in effect prior to, at or after the Closing Date; 
 provided, however, that with respect to any violation under Section 2.1(a)(i) or any environmental event, condition or matter included under Section 2.1(a)(ii) that is
associated with the ownership or operation of the Assets, MPL Investment LLC and MPCLP will be obligated to indemnify the Partnership Group only to the extent that such violation or environmental event, condition or matter (x) was caused by the
consummation of the transactions contemplated by the Contribution Agreement or commenced, occurred or existed before the Closing Date under Environmental Laws in effect prior to the Closing Date and (y) MPC is notified in writing of such
violation, event, condition or environmental matter prior to the Identification Deadline. Losses subject to indemnification in this Section 2.1(a) are referred to collectively as “Covered Environmental Losses”.

 (b) The Partnership Group shall indemnify, defend and hold harmless the MPC Entities from and against any Losses suffered or
incurred by the MPC Entities, directly or indirectly by reason of or arising out of: 
 (i) any violation of Environmental Laws
in effect on or after the Closing Date associated with or arising from the ownership or operation of the Non-Holdings Assets on or after the Closing Date; and 
 (ii) any environmental event, condition or matter associated with or arising from the ownership or operation of the Non-Holdings Assets on or after the Closing Date (including the presence of Hazardous
Substances on, under, about or migrating to or from the Non-Holdings Assets or the disposal or the release of Hazardous Substances generated by operation of the Non-Holdings Assets at non-Asset locations) including (A) the cost and expense of
any investigation, assessment, evaluation, monitoring, containment, cleanup, repair, restoration, remediation, risk-based closure activities, or other corrective action required or necessary under Environmental Laws in effect on or after the Closing
Date, and (B) the cost or expense of the preparation and implementation of any closure, remedial, corrective action, or other plans required or necessary under Environmental Laws in effect on or after the Closing Date; 

and regardless of whether such violation under Section 2.1(b)(i) or such environmental event, condition or matter included under
Section 2.1(b)(ii) occurred before or after the Closing Date, in each case, to the extent that any of the foregoing are not Covered Environmental Losses (without giving effect to the Environmental Deductible). 

(c) Holdings shall indemnify, defend and hold harmless the MPC Entities from and against any Losses suffered or incurred by the MPC
Entities, directly or indirectly, by reason of or arising out of: 
 (i) any violation of Environmental Laws in effect on or
after the Closing Date associated with or arising from the ownership or operation of the Holdings Business on or after the Closing Date; and 

  
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 (ii) any environmental event, condition or matter associated with or arising from the
ownership or operation of the Holdings Business on or after the Closing Date (including the presence of Hazardous Substances on, under, about or migrating to or from the Holdings Business or the disposal or the release of Hazardous Substances
generated by operation of the Holdings Business at non-Asset locations) including (A) the cost and expense of any investigation, assessment, evaluation, monitoring, containment, cleanup, repair, restoration, remediation, risk-based closure
activities, or other corrective action required or necessary under Environmental Laws in effect on or after the Closing Date, and (B) the cost or expense of the preparation and implementation of any closure, remedial, corrective action, or
other plans required or necessary under Environmental Laws in effect on or after the Closing Date; 
 and regardless of whether such violation
under Section 2.1(c)(i) or such environmental event, condition or matter included under Section 2.1(c)(ii) occurred before or after the Closing Date, in each case, to the extent that any of the foregoing are not Covered
Environmental Losses (without giving effect to the Environmental Deductible). 
 2.2 Employees. MPCLP shall indemnify,
defend and hold harmless the Partnership Group from and against any Losses suffered or incurred by the Partnership Group by reason of or arising out of the transfer of any employees to MPCLP or its Subsidiaries as described in
Section 5.1. 
 2.3 Right of Way Indemnification. Each of MPL Investment LLC and MPCLP, jointly and
severally, shall indemnify, defend and hold harmless the Partnership Group from and against any Losses suffered or incurred by the Partnership Group by reason of or arising out of (a) the failure of the applicable Group Member to be the owner
of such valid and indefeasible easement rights or fee ownership or leasehold interests in and to the lands on which any of the Assets conveyed or contributed to the applicable Group Member on the Closing Date is located as of the Closing Date, and
such failure renders the Partnership Group liable to a third party or unable to use or operate the Assets in substantially the same manner that the Assets were used and operated by the applicable MPC Entity immediately prior to the Closing Date;
(b) the failure of the applicable Group Member to have the consents, licenses and permits necessary to allow (1) any pipeline included in the Assets to cross the roads, waterways, railroads and other areas upon which any such pipeline is
located as of the Closing Date, or (2) the transfer of any of the Assets to the Partnership Group, in each case, where such failure renders the Partnership Group liable to a third party or unable to use or operate the Assets in substantially the
same manner that the Assets were used and operated by the applicable MPC Entity immediately prior to the Closing Date; and (c) the cost of curing any condition set forth in Section 2.3(a) or (b) that does not allow any
Asset to be operated in accordance with prudent industry practice, in each case to the extent that MPCLP is notified in writing of any of the foregoing prior to the Identification Deadline. 

2.4 Additional Indemnification. 
 (a) Each of MPL Investment LLC and MPCLP, jointly and severally, shall indemnify, defend, and hold harmless the Partnership Group from and against any Losses suffered or incurred by the Partnership Group
by reason of or arising out of: 

  
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 (i) events and conditions to the extent caused by the consummation of the transactions
contemplated by the Contribution Agreement or associated with the ownership or operation of the Assets and occurring before the Closing Date (other than Covered Environmental Losses which are provided for under Section 2.1). For the
avoidance of doubt, the Parties agree that the Partnership Group shall be entitled to indemnification by MPL Investment LLC and MPCLP under this Section 2.4(a)(i) for those litigation matters listed on Schedule A; 

(ii) events and conditions associated with the Retained Assets, whether occurring before, on or after the Closing Date; 

(iii) all federal, state and local tax liabilities attributable to the ownership or operation of the Assets on or prior to the Closing
Date, including under Treasury Regulation Section 1.1502-6, as it may be amended (or any similar provision of state or local law), and any such tax liabilities that may result from the consummation of the formation transactions for the
Partnership Group and the General Partner occurring prior to the Closing Date or from the consummation of the transactions contemplated by the Contribution Agreement; and 
 (iv) the failure of the Partnership Group to have on the Closing Date any consent, license, permit or approval necessary to allow the Partnership Group to own or operate the Assets in substantially the
same manner that the Assets were owned or operated immediately prior to the Closing Date. 
 (b) The Partnership Group shall
indemnify, defend, and hold harmless the MPC Entities from and against any Losses suffered or incurred by the MPC Entities by reason of or arising out of events and conditions to the extent associated with the ownership or operation of the
Non-Holdings Assets and occurring after the Closing Date (other than Covered Environmental Losses which are provided for under Section 2.1(a) and Losses for which the Partnership Group is indemnifying the MPC Entities under
Section 2.1(b)), unless such indemnification would not be permitted by any Group Member under the Partnership Agreement; 
 (c) Holdings shall indemnify, defend, and hold harmless the MPC Entities from and against any Losses suffered or incurred by the MPC Entities by reason of or arising out of events and conditions to the
extent associated with the ownership or operation of the Holdings Business and occurring after the Closing Date (other than Covered Environmental Losses which are provided for under Section 2.1(a) and Losses for which Holdings is
indemnifying the MPC Entities under Section 2.1(c)), unless such indemnification would not be permitted by any Group Member under the Partnership Agreement. 
 2.5 Indemnification Procedures. 
 (a) The Indemnified Party agrees that
within a reasonable period of time after it becomes aware of facts giving rise to a claim for indemnification under this Article II, it will provide notice thereof in writing to the Indemnifying Party, specifying the nature of and specific
basis for such claim. 
 (b) The Indemnifying Party shall have the right to control all aspects of the defense of (and any
counterclaims with respect to) any claims brought against the Indemnified Party that are covered by the indemnification under this Article II, including, without limitation, the selection of counsel, determination of whether to appeal any
decision of any court and the 

  
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settling of any such claim or any matter or any issues relating thereto; provided, however, that no such settlement for only the payment of money shall be entered into without the consent
of the Indemnified Party unless it includes a full release of the Indemnified Party from such claim; provided further, that no such settlement containing any form of injunctive or similar relief shall be entered into without the prior written
consent of the Indemnified Party, which consent shall not be unreasonably delayed or withheld. 
 (c) The Indemnified Party
agrees to cooperate in good faith and in a commercially reasonable manner with the Indemnifying Party, with respect to all aspects of the defense of and pursuit of any counterclaims with respect to any claims covered by the indemnification under
this Article II, including, without limitation, the prompt furnishing to the Indemnifying Party of any correspondence or other notice relating thereto that the Indemnified Party may receive, permitting the name of the Indemnified Party to be
utilized in connection with such defense and counterclaims, the making available to the Indemnifying Party of any files, records or other information of the Indemnified Party that the Indemnifying Party considers relevant to such defense and
counterclaims, the making available to the Indemnifying Party of any employees of the Indemnified Party and the granting to the Indemnifying Party of reasonable access rights to the properties and facilities of the Indemnified Party; provided,
however, that in connection therewith the Indemnifying Party agrees to use reasonable efforts to minimize the impact thereof on the operations of the Indemnified Party and further agrees to maintain the confidentiality of all files, records, and
other information furnished by the Indemnified Party pursuant to this Section 2.5. The obligation of the Indemnified Party to cooperate with the Indemnifying Party as set forth in the immediately preceding sentence shall not be construed
as imposing upon the Indemnified Party an obligation to hire and pay for counsel in connection with the defense of and pursuit of any counterclaims with respect to any claims covered by the indemnification set forth in this Article II;
provided, however, that the Indemnified Party may, at its own option, cost and expense, hire and pay for counsel in connection with any such defense and counterclaims. The Indemnifying Party agrees to keep any such counsel hired by the
Indemnified Party informed as to the status of any such defense, but the Indemnifying Party shall have the right to retain sole control over such defense and counterclaims. 
 (d) In determining the amount of any loss, cost, damage or expense for which the Indemnified Party is entitled to indemnification under this Agreement, the gross amount of the indemnification will be
reduced by (i) any insurance proceeds realized by the Indemnified Party, and such correlative insurance benefit shall be net of any incremental insurance premium that becomes due and payable by the Indemnified Party as a result of such claim
and (ii) all amounts recovered by the Indemnified Party under contractual indemnities from third Persons. 
 2.6
Limitations Regarding Indemnification. 
 (a) With respect to Covered Environmental Losses under
Section 2.1(a)(i) or Section 2.1(a)(ii) that arise out of an event, condition or matter that is first discovered after the Closing Date, neither MPL Investment LLC nor MPCLP shall be obligated to indemnify, defend and hold
harmless the Partnership Group until such time as the total aggregate amount of Losses incurred by the Partnership Group for such Covered Environmental Losses exceeds $500,000 (the “Environmental Deductible”), at which time MPL
Investment LLC and MPCLP shall be obligated to indemnify the Partnership Group for the excess of such Covered Environmental Losses over the Environmental Deductible. For the avoidance of doubt, it is agreed that the Environmental Deductible shall
not apply to any Covered Environmental Losses incurred by the Partnership Group attributable to those locations identified on Schedule B. 

  
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 (b) For the avoidance of doubt, there is no deductible with respect to the indemnification
owed by any Indemnifying Party under any portion of this Article II other than that described in Section 2.6(a) and no monetary cap on the amount of indemnity coverage provided by any Indemnifying Party under this Article
II. 
 (c) NOTWITHSTANDING ANYTHING HEREIN TO THE CONTRARY, IN NO EVENT SHALL ANY PARTY’S INDEMNIFICATION OBLIGATION
HEREUNDER COVER OR INCLUDE CONSEQUENTIAL, INDIRECT, INCIDENTAL, PUNITIVE, EXEMPLARY, SPECIAL OR SIMILAR DAMAGES OR LOST PROFITS (INCLUDING ANY DIMINUTION IN VALUE OF ANY PARTY’S RESPECTIVE INVESTMENT IN HOLDINGS OR THE PARTNERSHIP) SUFFERED BY
ANY OTHER PARTY ENTITLED TO INDEMNIFICATION UNDER THIS AGREEMENT, EXCEPT AS A REIMBURSEMENT FOR ANY SUCH DAMAGES AS ARE PAID TO A GOVERNMENTAL ENTITY OR OTHER THIRD PARTY. 
 ARTICLE III 
 General and Administrative Services 

3.1 General. MPC agrees to provide, and agrees to cause its Affiliates to provide, to the General Partner, for the Partnership
Group’s benefit, the centralized general and administrative services that MPC and its Affiliates have traditionally provided in connection with the ownership and operation of the Assets, which consist of the services set forth on Schedule
C (the “General and Administrative Services”). Absent the written agreement of the Parties to the contrary, the Parties agree that the General and Administrative Services will be performed in Ohio and will be received by the
General Partner, for the benefit of the Partnership Group, at the General Partner’s principal place of business. 
 3.2
Administrative Fee. 
 (a) As consideration for MPC’s provision of the General and Administrative Services, the
Partnership Group will pay to MPC an annual fee that will reflect the costs incurred by MPC and its Affiliates in providing such General and Administrative Services (other than those costs for which MPC and its Affiliates are entitled to
reimbursement pursuant to Section 3.3), as determined in good faith by MPC in accordance with Schedule C (the “Administrative Fee”). For the avoidance of doubt, the Parties hereby acknowledge and agree that the
Administrative Fee will cover the fully burdened cost of the General and Administrative Services provided by MPC and its Affiliates to the Partnership Group, as well as any third party costs actually incurred by MPC and its Affiliates on behalf of
the Partnership Group in providing such General and Administrative Services (other than those costs for which MPC and its Affiliates are entitled to reimbursement pursuant to Section 3.3), including the following: 

  
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 (i) the compensation and employee benefits of employees of MPC or its Affiliates (and any
employment taxes related thereto), to the extent, but only to the extent, such employees perform General and Administrative Services for the Partnership Group’s benefit. With respect to employees that do not devote all of their business time to
the Partnership Group, such compensation and employee benefits shall be allocated to the Partnership Group based on the annual weighted average of time spent and number of employees devoting services to the Partnership Group; 

(ii) any expenses incurred or payments made by MPC or its Affiliates on behalf of the Partnership Group for insurance coverage with
respect to the Assets or the business of the Partnership Group; 
 (iii) all expenses and expenditures incurred by MPC or its
Affiliates on behalf of the Partnership Group as a result of the Partnership becoming and continuing as a publicly traded entity, including, but not limited to, costs associated with annual, quarterly or current reports, independent auditor fees,
partnership governance and compliance, registrar and transfer agent fees, exchange listing fees, tax return and Schedule K-1 preparation and distribution, legal fees, independent director compensation and directors and officers liability insurance
premiums; and 
 (iv) all sales, use, excise, value added or similar taxes, if any, that may be applicable from time to time
with respect to the services provided by MPC and its Affiliates to the Partnership Group pursuant to Section 3.1. 

(b) As part of the Administrative Fee, the Partnership Group shall pay to MPC a fixed fee, in the amount shown on Schedule C, in
consideration for the services of certain employees of MPC and its Affiliates in their capacities as officers of the General Partner and the Group Members. To the extent that the General Partner grants any awards under any of the Partnership’s
incentive compensation plans in effect from time to time to any employee of MPC and its Affiliates, or any directors of the General Partner, such awards shall not be part of the Administrative Fee and shall be at the Partnership’s sole expense.

 (c) The Parties acknowledge and agree that the Administrative Fee may change each calendar year, as determined by MPC in good
faith, to accurately reflect the degree and extent of the General and Administrative Services provided to the Partnership Group and may be adjusted to reflect, among other things, the contribution, acquisition or disposition of assets to or by the
Partnership Group or to reflect any change in the cost of providing General and Administrative Services to the Partnership Group due to changes in any law, rule or regulation applicable to the MPC Entities or the Partnership Group, including any
interpretation of such laws, rules or regulations. 
 (d) On or prior to January 1 of each calendar year during the term of
this Agreement, MPC will notify the General Partner of the estimated amount of the Administrative Fee (including both the fixed and variable portions of the Administrative Fee as described in Schedule C) to be paid by the Partnership Group
for such calendar year. For the calendar year in which the Closing Date occurs, such estimate shall be made on or prior to the Closing Date and shall pertain only to the remainder of such calendar year. Commencing with the first full month following
the Closing Date, the Administrative Fee shall be invoiced and paid as follows: 

  
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 (i) Within 20 days following the end of each month during the term of this Agreement, MPC
will submit to the Partnership Group an invoice of the amounts due for such month for the Administrative Fee. Each invoice will contain reasonably satisfactory support of such amounts and such other supporting detail as the General Partner may
reasonably require. 
 (ii) The Partnership Group will pay the Administrative Fee within 10 days after the receipt of the
invoice therefor. The Partnership Group shall not offset any amounts owing to it by MPC or any of its Affiliates against the Administrative Fee payable hereunder. 
 3.3 Reimbursement of Expenses. 
 (a) In addition to the Administrative Fee
payable under Section 3.2, the Partnership Group will reimburse MPC and its Affiliates for any additional out-of-pocket costs and expenses actually incurred by the MPC and its Affiliates in providing the General and Administrative
Services, as well as any other out-of-pocket expenses incurred on behalf of the Partnership Group. 
 (b) The Partnership Group
will reimburse MPC and its Affiliates for any costs and expenses incurred by MPC and its Affiliates under Section 3.3(a) as incurred on a monthly basis. For the avoidance of doubt, the General and Administrative Services provided by MPC
and its Affiliates pursuant to this Article III will be in addition to, and not in duplication of, the services that will be provided to certain Group Members by certain Affiliates of MPC under the Employee Services Agreements, and MPC and
its Affiliates shall not be entitled to reimbursement under this Agreement for any expenses for which Affiliates of MPC are entitled to reimbursement under the Employee Services Agreements. 

ARTICLE IV 

Licenses of Marks 
 4.1 Grant of License. Upon the terms and conditions set forth in this Article IV, MPC and MPCLP hereby grant and convey to the Partnership and each of the entities currently or hereafter
comprising a part of the Partnership Group a nontransferable, nonexclusive, royalty-free right and license (the “MPC License”) to use the red “M” with hexagon trademark (the “Trademark”) and the other
trademarks and tradenames owned by MPC or MPCLP listed on Schedule D (collectively, the “MPC Marks”). 

4.2 Ownership and Quality. The Partnership, on behalf of itself and the other Group Members, agrees that ownership of the MPC
Marks and the goodwill relating thereto shall remain vested in MPC or MPCLP, as applicable, during the term of the MPC License and thereafter. The Partnership agrees, and agrees to cause the other Group Members, never to challenge, contest or
question the validity of MPC’s or MPCLP’s ownership of the MPC Marks or any registration thereof by MPC or MPCLP. In connection with the use of the MPC Marks, the Partnership and any other Group Member shall not in any manner represent
that they have any ownership in the MPC Marks or registration thereof. The Partnership, on behalf of itself and the other Group Members, acknowledges that the use of the MPC Marks shall not create any right, title or interest in or to the MPC Marks,
and all use of the MPC Marks by the Partnership or any other Group Member shall inure to the benefit of MPC or MPCLP, as applicable. The 

  
 12 

 
Partnership agrees, and agrees to cause the other Group Members, to use the MPC Marks in accordance with such quality standards established by MPC or MPCLP and communicated to the Partnership
Group from time to time, it being understood that the products and services offered by the Group Members as of the Closing Date are of a quality that is acceptable to MPC or MPCLP. 

4.3 Grant of License. Upon the terms and conditions set forth in this Article IV, the General Partner, for the benefit of
the Partnership, hereby grants and conveys to MPC and its Affiliates a nontransferable, nonexclusive, royalty-free right and license (“MPLX License”) to use the “MPLX” logo and trademark (the “MPLX
Trademark”) and the other trademarks and tradenames owned by the Partnership listed on Schedule D (collectively, the “MPLX Marks”). 
 4.4 Ownership and Quality. MPC agrees, on behalf of itself and the MPC Entities, that ownership of the MPLX Marks and the goodwill relating thereto shall remain vested in the General Partner, for
the benefit of the Partnership, during the term of the MPLX License and thereafter. MPC agrees, and agrees to cause the MPC Entities, never to challenge, contest or question the validity of the General Partner’s ownership of the MPLX Marks or
any registration thereof by the General Partner or the Partnership. In connection with the use of the MPLX Marks, neither MPC nor any of the MPC Entities shall in any manner represent that they have any ownership in the MPLX Marks or registration
thereof. MPC, on behalf of itself and the MPC Entities, acknowledges that the use of the MPLX Marks shall not create any right, title or interest in or to the MPLX Marks, and all use of the MPLX Marks by MPC or any of the MPC Entities shall inure to
the benefit of the General Partner and the Partnership. MPC agrees, and agrees to cause the MPC Entities, to use the MPLX Marks in accordance with such quality standards established by the General Partner, on behalf of and for the benefit of the
Partnership, and communicated to MPC from time to time. 
 4.5 Termination. The MPC License and the MPLX License shall
each terminate upon the termination of this Agreement pursuant to Section 6.5. 
 ARTICLE V 

Represented Employees 
 5.1 Transfer of Represented Employees. The Parties acknowledge that the employees of Marathon Pipe Line LLC were transferred to Marathon Petroleum Logistics Services LLC on or before the Closing
Date. The Parties agree to cooperate and shall take all action necessary to effectuate such transfer and shall comply with the terms of the applicable collective bargaining agreements with respect to any of those employees. 

ARTICLE VI 

Miscellaneous 
 6.1 Confidentiality. 
 (a) From and after the Closing Date, each of the
Parties shall hold, and shall cause their respective Subsidiaries and Affiliates and its and their directors, officers, employees, agents, consultants, advisors, and other representatives (collectively, “Representatives”) to hold

  
 13 

 
all Confidential Information in strict confidence, with at least the same degree of care that applies to such Party’s confidential and proprietary information and shall not use such
Confidential Information and shall not release or disclose such Confidential Information to any other Person, except its Representatives. Each Party shall be responsible for any breach of this section by any of its Representatives. 

(b) If a Party receives a subpoena or other demand for disclosure of Confidential Information received from any other Party or must
disclose to a Governmental Authority any Confidential Information received from such other Party in order to obtain or maintain any required governmental approval, the receiving Party shall, to the extent legally permissible, provide notice to the
providing Party before disclosing such Confidential Information. Upon receipt of such notice, the providing Party shall promptly either seek an appropriate protective order, waive the receiving Party’s confidentiality obligations hereunder to
the extent necessary to permit the receiving Party to respond to the demand, or otherwise fully satisfy the subpoena or demand or the requirements of the applicable Governmental Authority. If the receiving Party is legally compelled to disclose such
Confidential Information or if the providing Party does not promptly respond as contemplated by this section, the receiving Party may disclose that portion of Confidential Information covered by the notice or demand. 

(c) Each Party acknowledges that the disclosing Party would not have an adequate remedy at law for the breach by the receiving Party of
any one or more of the covenants contained in this Section 6.1 and agrees that, in the event of such breach, the disclosing Party may, in addition to the other remedies that may be available to it, apply to a court for an injunction to
prevent breaches of this Section 6.1 and to enforce specifically the terms and provisions of this Section 6.1. Notwithstanding any other section hereof, the provisions of this Section 6.1 shall survive the termination of
this Agreement. 
 6.2 Choice of Law; Mediation; Submission to Jurisdiction. 

(a) This Agreement shall be subject to and governed by the laws of the State of Delaware, excluding any conflicts-of-law rule or
principle that might refer the construction or interpretation of this Agreement to the laws of another state. 
 (b) If the
Parties cannot resolve any dispute or claim arising under this Agreement, then no earlier than 10 days nor more than 60 days following written notice to the other Parties, any Party may initiate mandatory, non-binding mediation hereunder by giving a
notice of mediation (a “Mediation Notice”) to the other Parties. In connection with any mediation pursuant to this Section 6.2, the mediator shall be jointly appointed by the Parties and the mediation shall be conducted
in Findlay, Ohio unless otherwise agreed by the Parties. All costs and expenses of the mediator appointed pursuant to this section shall be shared equally by the Parties. The then-current Model ADR Procedures for Mediation of Business Disputes of
the Center for Public Resources, Inc., either as written or as modified by mutual agreement of the Parties, shall govern any mediation pursuant to this section. In the mediation, each Party shall be represented by one or more senior representatives
who shall have authority to resolve any disputes. If a Dispute has not been resolved within 30 days after the receipt of the Mediation Notice by a Party, then any Party may refer the resolution of the dispute to litigation. 

  
 14 

 (c) Each Party agrees that it shall bring any action or proceeding in respect of any claim
arising out of or related to this Agreement, whether in tort or contract or at law or in equity, exclusively in any federal or state courts located in Delaware and (i) irrevocably submits to the exclusive jurisdiction of such courts,
(ii) waives any objection to laying venue in any such action or proceeding in such courts, (iii) waives any objection that such courts are an inconvenient forum or do not have jurisdiction over it and (iv) agrees that service of
process upon it may be effected by mailing a copy thereof by registered or certified mail (or any substantially similar form of mail), postage prepaid, to it at its address specified in Section 6.3. The foregoing consents to jurisdiction
and service of process shall not constitute general consents to service of process in the State of Delaware for any purpose except as provided herein and shall not be deemed to confer rights on any Person other than the Parties. 

6.3 Notice. All notices or requests or consents provided for by, or permitted to be given pursuant to, this Agreement must be in
writing and must be given by e-mail or United States mail, addressed to the Person to be notified, postpaid, and registered or certified with return receipt requested or by delivering such notice in person or by facsimile to such Party. Notice given
by personal delivery or mail shall be effective upon actual receipt. Notice given by e-mail or facsimile shall be effective upon actual receipt if received during the recipient’s normal business hours or at the beginning of the recipient’s
next business day after receipt if not received during the recipient’s normal business hours. All notices to be sent to a Party pursuant to this Agreement shall be sent to or made at the address set forth below or at such other address as such
Party may stipulate to the other Parties in the manner provided in this Section 6.3. 
 If to the MPC Entities:

 Marathon Petroleum Corporation 
 539 South Main St. 
 Findlay, OH 45840 

Attn: General Counsel 
 Facsimile: (419) 421-3124 
 E-mail: jmwilder@marathonpetroleum.com 

If to any Group Member: 
 MPLX LP 
 c/o MPLX GP LLC, its General Partner 

200 East Hardin St. 
 Findlay, OH 45840 
 Attn: General Counsel 

Facsimile: (419) 421-3124 
 E-mail: jmwilder@marathonpetroleum.com 

  
 15 

 6.4 Entire Agreement. This Agreement constitutes the entire agreement of the Parties
relating to the matters contained herein, superseding all prior contracts or agreements, whether oral or written, relating to the matters contained herein. 
 6.5 Termination of Agreement. This Agreement, other than the provisions set forth in Article II hereof, may be terminated (a) by the written agreement of all of the Parties or
(b) by MPC or the Partnership immediately upon a Partnership Change of Control by written notice given to the other Parties to this Agreement. For the avoidance of doubt, the Parties’ indemnification obligations under Article II
shall survive the termination of this Agreement in accordance with their respective terms. 
 6.6 Amendment or
Modification. This Agreement may be amended or modified from time to time only by the written agreement of all the Parties. Each such instrument shall be reduced to writing and shall be designated on its face an “Amendment” or an
“Addendum” to this Agreement. 
 6.7 Assignment. No Party shall have the right to assign its rights or
obligations under this Agreement without the consent of the other Parties; provided, however, that the Partnership Group may make a collateral assignment of this Agreement solely to secure financing for the Partnership Group. 

6.8 Counterparts. This Agreement may be executed in any number of counterparts with the same effect as if all signatory parties
had signed the same document and shall be construed together and shall constitute one and the same instrument. 
 6.9
Severability. If any provision of this Agreement shall be held invalid or unenforceable by a court or regulatory body of competent jurisdiction, the remainder of this Agreement shall remain in full force and effect. 

6.10 Further Assurances. In connection with this Agreement and all transactions contemplated by this Agreement, each signatory
party hereto agrees to execute and deliver such additional documents and instruments and to perform such additional acts as may be necessary or appropriate to effectuate, carry out and perform all of the terms, provisions and conditions of this
Agreement and all such transactions. 
 6.11 Rights of Limited Partners. The provisions of this Agreement are enforceable
solely by the Parties to this Agreement, and no Limited Partner of the Partnership shall have the right, separate and apart from the Partnership, to enforce any provision of this Agreement or to compel any Party to this Agreement to comply with the
terms of this Agreement. 
 [Remainder of page intentionally left blank.] 

  
 16 

 IN WITNESS WHEREOF, the Parties have executed this Agreement on, and effective as of,
the Closing Date. 
  

			
	Marathon Petroleum Corporation
		
	 By:
	 	 
	
	Marathon Petroleum Company LP
	 By: MPC Investment LLC, its general partner

		
	 By:
	 	 
	
	MPL Investment LLC
		
	 By:
	 	 
	
	MPLX LP
	By:	 	MPLX GP LLC, its general partner
		
	 By:
	 	 
	
	MPLX GP LLC
		
	 By:
	 	 
	
	MPLX Pipe Line Holdings LP
		
	 By:
	 	 

 [Signature page to Omnibus Agreement] 

 Schedule A 
 Pre-Closing Litigation 
  
 

 

 Schedule B 
 Environmental Remediation Locations 
  
 

 

 Schedule C 
 General and Administrative Services 
 Pursuant to Section 3.1 

 

	(1)	Management services of MPC and its Affiliates (other than the General Partner) provided by employees who devote less than 50% of their business time to the business and
affairs of the Partnership. This cost includes MPC-stock based compensation expense. 

  

	(2)	Financial and administrative services (including treasury and accounting) 

  

	(3)	Information technology services – professional services 

  

	(4)	Legal services 

  

	(5)	Health, environmental, safety and security services (including third party security services) 

 

	(6)	Human resources services 

  

	(7)	Tax services 

  

	(8)	Procurement services 

  

	(9)	Investor Relations; Government & Public affairs services 

  

	(10)	Analytical & engineering services 

  

	(11)	Business Development services 

 Pursuant to
Section 3.2 
 The fixed portion of the Administrative Fee for calendar year 2013, as described in Section 3.2, will be
$31,842,000. For the avoidance of doubt, the fixed portion of the Administrative Fee for the remainder of calendar year 2012 will be the same annual amount as calendar year 2013 pro-rated based on the number of days remaining in 2012 from the
Closing Date. 
 The portion of the Administrative Fee attributable to any marketing and transportation engineering services, information
technology services, administrative/office services, and public company expenses and will be a variable amount based on the costs actually incurred by the MPC and its Affiliates on behalf of the Partnership Group (other than any costs for which MPC
and its Affiliates are reimbursed pursuant to Section 3.3). The portion of the variable amount of the Administrative Fee attributable to any marketing and transportation engineering services described in the preceding sentence will be
based on the costs incurred by MPC and its Affiliates on behalf of the Partnership Group (other than any costs for which MPC and its Affiliates are reimbursed pursuant to Section 3.3) plus 6.0% of such costs. 

Pursuant to Section 3.2(b) 
 The
fixed portion of the Administrative Fee for calendar year 2013 includes as a part thereof, the following amounts attributable to services provided by officers of the Partnership Group: 

 

					
	 (1)    G. R. Heminger, Chairman of the Board and CEO
	  	$	1,175,000	  
	 G. L. Peiffer, President
	  	$	 475,000	  
	 D. C. Templin, Chief Financial Officer
	  	$	 475,000	  
	 (2)    All other officers as a group 
	  	$	1,350,000	  
		  	  
	  
	 
	 Total
	  	$	3,475,000Amended and Restated Limited Partnership Agreement

 Exhibit 10.5 
 Amended and Restated 
 Agreement of Limited Partnership 

of 
 MPLX
Pipe Line Holdings LP 
 This Amended and Restated Agreement of Limited Partnership (this “Agreement”) of
MPLX Pipe Line Holdings LP (the “Partnership”), effective as of [                        ], 2012 (the
“Effective Date”), is entered into by and between MPLX Operations LLC, a Delaware limited liability company (the “General Partner”), and MPL Investment LLC, a Delaware limited liability company (the “Limited
Partner”). 
 WHEREAS, the General Partner and the Limited Partner entered into an Agreement of Limited Partnership
dated April 2, 2012 (the “Original Agreement”); and 
 WHEREAS, the General Partner and the Limited
Partner wish to amend and restate the Original Agreement in its entirety and continue the Partnership without dissolution. 

NOW, THEREFORE, in consideration of the mutual covenants and obligations set forth in this Agreement, and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the General Partner and the Limited Partner hereby agree as follows: 

Article 1 

Definitions and Construction 
 1.01 Definitions. The following terms have the following meanings when used in this Agreement. 
 (a) “Act” means the Delaware Revised Uniform Limited Partnership Act, 6 Del. C. § 17-101 et seq., as amended, supplemented or restated from time to time, and any successor to
such statute. 
 (b) “Adjusted Capital Account” means, with respect to any Partner, the balance in such
Partner’s Capital Account as of the end of the relevant Allocation Year, after giving effect to the following adjustments: 
  

	 	(i)	Credit to such Capital Account any amounts which such Partner is deemed obligated to restore pursuant to the penultimate sentences of Regulations Sections 1.704-2(g)(1)
and 1.704-2(i)(5); and 

  

	 	(ii)	Debit to such Capital Account the items described in Regulations Sections 1.704-1(b)(2)(ii)(d)(4), 1.704-1(b)(2)(ii)(d)(5), and 1.704- 1(b)(2)(ii)(d)(6).

  
 Page 1 of 29

 The foregoing definition of Adjusted Capital Account is intended to comply with the
provisions of Regulations Section 1.704-1(b)(2)(ii)(d) and shall be interpreted consistently therewith. 
 (c)
“Adjusted Capital Account Deficit” means, with respect to any Partner, the deficit balance, if any, in such Partner’s Adjusted Capital Account as of the end of the relevant Allocation Year. 

(d) “Affiliate” means, with respect to any Person, any other Person that directly or indirectly through one or more
intermediaries controls, is controlled by or is under common control with, the Person in question. 
 (e)
“Agreement” means this Amended and Restated Agreement of Limited Partnership of MPLX Pipe Line Holdings LP, as amended from time to time. 
 (f) “Allocation Year” means (a) each calendar year ending on December 31st or (b) any portion thereof for which the Partnership is required to allocate Profits, Losses, and
other items of Partnership income, gain, loss, or deduction pursuant to Article 5. 
 (g) “Applicable Law”
means any applicable statute, law, regulation, ordinance, rule, judgment, rule of law, order, decree, permit, approval, concession, grant, franchise, license, agreement, requirement, or other governmental restriction or any similar form of decision,
of, or any provision or condition of any permit, license or other operating authorization issued under any of the foregoing by, or any determination by any Governmental Authority having or asserting jurisdiction over the matter or matters in
question, whether now or hereafter in effect and in each case as amended (including without limitation, all of the terms and provisions of the common law of such Governmental Authority), as interpreted and enforced at the time in question.

 (h) “Capital Account” means, with respect to any Partner of the Partnership, the Capital Account maintained
for such Partner in accordance with the following provisions: 
  

	 	(i)	To each Partner’s Capital Account there shall be credited (A) such Partner’s Capital Contributions, (B) such Partner’s distributive share of
Profits and any items in the nature of income or gain that are specially allocated to such Partner pursuant to Sections 5.03 or 5.04, and (C) the amount of any Liabilities of the Partnership assumed by such Partner or that are secured by any
Property distributed to such Partner; 

  

	 	(ii)	To each Partner’s Capital Account there shall be debited (A) the amount of cash and the Gross Asset Value of any Partnership Property distributed to such
Partner pursuant to any provision of this Agreement, (B) such Partner’s distributive share of Losses and any items in the nature of deduction, expense, or loss which are specially allocated to such Partner pursuant to Sections 5.03 or
5.04, and (C) the amount of any Liabilities of such Partner assumed by the Partnership or that are secured by any Property contributed by such Partner to the Partnership; 

  
 Page 2 of 29

	 	(iii)	In the event a Partnership Interest is transferred in accordance with the terms of this Agreement, the transferee shall succeed to the Capital Account of the transferor
to the extent it relates to the transferred interest; and 

  

	 	(iv)	In determining the amount of any Liability for purposes of subparagraphs (i) and (ii) above there shall be taken into account Code Section 752(c) and any
other applicable provisions of the Code and Regulations. 

 The foregoing provisions and the other provisions of this Agreement
relating to the maintenance of Capital Accounts are intended to comply with Regulations Section 1.704-1(b), and shall be interpreted and applied in a manner consistent with such Regulations. In the event the Tax Matters Partner shall determine
in good faith and on a commercially reasonable basis that it is prudent to modify the manner in which the Capital Accounts, or any debits or credits thereto, are computed in order to comply with such Regulations, the Tax Matters Partner may make
such modification; provided that the Tax Matters Partner shall promptly give each other Partner written notice of such modification. The Tax Matters Partner also shall, in good faith and on a commercially reasonable basis, (A) make any
adjustments to the Capital Accounts that are necessary or appropriate to maintain equality between the aggregate Capital Accounts of the Partners and the amount of capital reflected on the Partnership’s balance sheet, as computed for book
purposes, in accordance with Regulations Section 1.704-1(b)(2)(iv)(q) and (B) make any appropriate modifications to the Capital Accounts in the event unanticipated events might otherwise cause this Agreement not to comply with Regulations
Section 1.704-1(b). 
 (i) “Capital Contributions” means, with respect to any Partner, (i) the amount
of cash, cash equivalents or the initial Gross Asset Value of any Property (other than cash) contributed or deemed contributed to the Partnership by such Partner or (ii) current distributions that a Partner is entitled to receive but otherwise
waives. 
 (j) “Capital Lease” means any lease of (or other arrangement conveying the right to use) real or
personal property, or a combination thereof, which obligations are required to be classified and accounted for as a capital lease on a consolidated balance sheet of the Partnership and its subsidiaries in accordance with GAAP. 

(k) “Certificate” means the certificate of limited partnership of the Partnership filed in accordance with the Act.

 (l) “Code” means the Internal Revenue Code of 1986, as amended and in effect from time to time. Any
reference herein to a specific section or sections of the Code shall be deemed to include a reference to any corresponding provision of any successor law. 
 (m) “Contribution Agreement” means the Contribution, Conveyance and Assumption Agreement, dated as of [•], 2012, by and among MPLX LP, MPLX GP LLC, the General Partner, the Limited
Partner, MPC Investment LLC, MPLX Logistics Holdings LLC, Marathon Pipe Line LLC and the Partnership. 

  
 Page 3 of 29

 (n) “Covered Person” means any Partner, any Affiliate of a Partner or any
officers, directors, shareholders, members, partners, employees, representatives or agents of a Partner or their respective Affiliates, or any Representative, or any employee, officer or agent of the Partnership or its Subsidiaries. 

(o) “Depreciation” means, for each Allocation Year, an amount equal to the depreciation, amortization, depletion or
other cost recovery deduction allowable with respect to an asset for such Allocation Year for federal income tax purposes, except that with respect to any asset whose Gross Asset Value differs from its adjusted tax basis for federal income tax
purposes at the beginning of such Allocation Year, Depreciation shall be an amount that bears the same ratio to such beginning Gross Asset Value as the federal income tax depreciation, amortization, or other cost recovery deduction for such
Allocation Year bears to such beginning adjusted tax basis; provided, however, that if the adjusted basis for federal income tax purposes of an asset at the beginning of such Allocation Year is zero, Depreciation shall be determined with
reference to such beginning Gross Asset Value using any reasonable method selected by the General Partner. 
 (p)
“Distributable Cash” means, with respect to any Quarter: (i) the sum of all cash and cash equivalents of the Partnership and its Subsidiaries on hand at the end of such Quarter; less (ii) the amount of any cash reserves
established by the General Partner to (A) provide for the proper conduct of the business of the Partnership and its Subsidiaries (including reserves for future capital expenditures and for anticipated future credit needs of the Partnership and
its Subsidiaries) subsequent to such Quarter; or (B) comply with Applicable Law or any loan agreement, security agreement, mortgage, debt instrument or other agreement or obligation to which the Partnership or any of its Subsidiaries is a party
or by which any of them is bound or any of their respective assets are subject. 
 (q) “Effective Date” has the
meaning set forth in the preamble of this Agreement. 
 (r) “Fiscal Year” means a calendar year. 

(s) “GAAP” means generally accepted accounting principles in the United States. 

(t) “General Partner” means MPLX Operations LLC, a Delaware limited liability company, and its successors and permitted
assigns that are admitted to the Partnership as general partner and any additional general partner of the Partnership, each in its capacity as general partner of the Partnership. 

(u) “General Partner Interest” means the ownership interest of the General Partner in the Partnership (in its capacity
as a general partner without reference to any Limited Partner Interest held by it), and includes any and all benefits to which the General Partner is entitled as provided in this Agreement, together with all obligations of the General Partner to
comply with the terms and provisions of this Agreement. 
 (v) “Governmental Authority” means any federal,
state, local or foreign government or any provincial, departmental or other political subdivision thereof, or any entity, body or authority exercising executive, legislative, judicial, regulatory, administrative or other governmental functions or
any court, department, commission, board, bureau, agency, instrumentality or administrative body of any of the foregoing. 

  
 Page 4 of 29

 (w) “Gross Asset Value” means, with respect to any asset, the asset’s
adjusted basis for federal income tax purposes, except as follows: 
  

	 	(i)	The initial Gross Asset Value of any Property contributed by a Partner to the Partnership shall be the gross fair market value of such asset as agreed to by each
Partner or, in the absence of any such agreement, as determined by the General Partner; 

  

	 	(ii)	The Gross Asset Values of all items of Property shall be adjusted to equal their respective fair market values as determined by the General Partner as of the following
times: (A) the acquisition of an additional interest in the Partnership by any new or existing Partner in exchange for more than a de minimis Capital Contribution, (B) the distribution by the Partnership to a Partner of more than a
de minimis amount of Property as consideration for an interest in the Partnership, (C) the issuance of additional Partnership Interests as consideration for the provision of services, and (D) the liquidation of the Partnership
within the meaning of Regulations Section 1.704-1(b)(2)(ii)(g); 

  

	 	(iii)	The Gross Asset Value of any item of Property distributed to any Partner shall be adjusted to equal the fair market value of such item on the date of distribution as
determined by the General Partner; and 

  

	 	(iv)	The Gross Asset Value of each item of Property shall be increased (or decreased) to reflect any adjustments to the adjusted basis of such assets pursuant to Code
Sections 734(b) or 743(b), but only to the extent that such adjustments are taken into account in determining Capital Accounts pursuant to Regulations Section 1.704-1(b)(2)(iv)(m) and subparagraph (vi) of the definition of Profits and
Losses; provided, however, that Gross Asset Values shall not be adjusted pursuant to this subparagraph (iv) to the extent that an adjustment pursuant to subparagraph (ii) is required in connection with a transaction that would
otherwise result in an adjustment pursuant to this subparagraph (iv). 

 If the Gross Asset Value of an asset has been determined
or adjusted pursuant to subparagraph (i), (ii), or (iv), such Gross Asset Value shall thereafter be adjusted by the Depreciation taken into account with respect to such asset, for purposes of computing Profits and Losses. 

(x) “Guarantees” by any Person means any obligation, contingent or otherwise, of such Person directly or indirectly
guaranteeing any Indebtedness or other obligation of any other Person or in any manner, providing for the payment of any Indebtedness or other obligation of any other Person or otherwise protecting the holder of such Indebtedness or other
obligations against loss (whether arising by virtue of partnership agreements, by obtaining letters of credit, by agreement to keep-well, to purchase assets, goods, securities or services, or to take-or-pay or otherwise); provided that the
term “Guarantee” shall not include endorsements for collection or deposit in the ordinary course of business. 

  
 Page 5 of 29

 (y) “Indebtedness” of any Person means, without duplication, (i) all
obligations of such Person for borrowed money or with respect to deposits or advances of any kind, (ii) all obligations of such Person evidenced by bonds, debentures, notes or similar instruments, (iii) all obligations of such Person upon
which interest charges are customarily paid, (iv) all obligations of such Person under conditional sale or other title retention agreements relating to property or assets purchased by such Person, (v) all obligations of such Person issued
or assumed as the deferred purchase price of property or services (excluding trade accounts payable, trade advertising and accrued obligations), (vi) all Indebtedness of others secured by (or for which the holder of such Indebtedness has an
existing right, contingent or otherwise, to be secured by) any lien on property owned or acquired by such Person, whether or not the obligations secured thereby have been assumed, (vii) all Guarantees by such Person of Indebtedness of others,
(viii) all Capital Lease obligations of such Person, (ix) all obligations of such Person in respect of interest rate protection agreements, foreign currency exchange agreements or other interest rate hedging arrangements and (xi) all
obligations of such Person as an account party in respect of letters of credit and bankers’ acceptances. The Indebtedness of any Person shall include the Indebtedness of any partnership in which such Person is a general partner, other than to
the extent that the instrument or agreement evidencing such Indebtedness expressly limits the Liability of such Person in respect thereof. 
 (z) “Liability” means any Indebtedness, obligation or other liability, whether arising under Applicable Law, contract or otherwise, known or unknown, fixed or contingent, real or
potential, tangible or intangible, now existing or hereafter arising. 
 (aa) “Limited Partner” means MPL
Investment LLC, a Delaware limited liability company, and its successors and permitted assigns that are admitted as a limited partner of the Partnership and each additional Person who becomes a limited partner of the Partnership pursuant to the
terms of this Agreement in each case, in such Person’s capacity as a limited partner of the Partnership. 
 (bb)
“Limited Partner Interest” means an interest of a Limited Partner in the Partnership (in its capacity as a limited partner without reference to any General Partner Interest held by it), and includes any and all benefits to which
such Limited Partner is entitled as provided in this Agreement, together with all obligations of such Limited Partner pursuant to the terms and provisions of this Agreement. 
 (cc) “Minimum Gain” has the meaning set forth in Regulations Sections 1.704-2(b)(2) and 1.704-2(d). 
 (dd) “Nonrecourse Deductions” has the meaning set forth in Regulations Section 1.704-2(b)(1) and 1.704-2(c). 
 (ee) “Nonrecourse Liability” has the meaning set forth in Regulations Section 1.704-2(b)(3). 
 (ff) “Partner Nonrecourse Debt” has the meaning set forth in Regulations Section 1.704-2(b)(4). 

  
 Page 6 of 29

 (gg) “Partner Nonrecourse Debt Minimum Gain” means an amount, with respect
to each Partner Nonrecourse Debt, equal to the Minimum Gain that would result if such Partner Nonrecourse Debt were treated as a Nonrecourse Liability, determined in accordance with Regulations Section 1.704-2(i)(3). 

(hh) “Partner Nonrecourse Deductions” has the meaning set forth in Regulations Sections 1.704-2(i)(1) and 1.704-2(i)(2).

 (ii) “Partner” means a General Partner or a Limited Partner. 

(jj) “Partnership” means MPLX Pipe Line Holdings LP, the Delaware limited partnership governed by this Agreement.

 (kk) “Partnership Interest” means any equity interest in the Partnership, including any class or series of
equity interest, which shall include any Limited Partner Interests and the General Partner Interest. 
 (ll) “Percentage
Interests” has the meaning set forth in Section 3.01. 
 (mm) “Person” means any natural person,
trust, estate, unincorporated organization, firm, corporation, association, partnership, joint venture, joint stock company, limited liability company or Governmental Authority, whether acting in an individual, fiduciary or other capacity.

 (nn) “Profits” and “Losses” mean, for each Allocation Year, an amount equal to the
Partnership’s taxable income or loss for such Allocation Year, determined in accordance with Code Section 703(a) (for this purpose, all items of income, gain, loss, or deduction required to be stated separately pursuant to Code
Section 703(a)(1) shall be included in taxable income or loss), with the following adjustments (without duplication): 
  

	 	(i)	The Partnership shall be treated as owning directly its proportionate share (as determined by the General Partner) of any other partnership, limited liability company,
unincorporated business or other entity classified as a partnership or disregarded entity for U.S. Federal income tax purposes of which the Partnership is, directly or indirectly, a partner, member, or other equity-holder. 

 

	 	(ii)	Any income of the Partnership that is exempt from federal income tax and not otherwise taken into account in computing Profits or Losses pursuant to this definition of
Profits and Losses shall be added to such taxable income or loss; 

  

	 	(iii)	Any expenditures of the Partnership described in Code Section 705(a)(2)(B) or treated as Code Section 705(a)(2)(B) expenditures pursuant to Regulations
Section 1.704- 1(b)(2)(iv)(i), and not otherwise taken into account in computing Profits or Losses pursuant to this definition of Profits and Losses shall be subtracted from such taxable income or loss; 

  
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	 	(iv)	In the event the Gross Asset Value of any item of Property is adjusted pursuant to subparagraph (ii) or (iii) of the definition of Gross Asset Value, the
amount of such adjustment shall be treated as an item of gain (if the adjustment increases the Gross Asset Value of the item of Property) or an item of loss (if the adjustment decreases the Gross Asset Value of the item of Property) from the
disposition of such asset and shall be taken into account for purposes of computing Profits or Losses; 

  

	 	(v)	Gain or loss resulting from any disposition of any Property with respect to which gain or loss is recognized for federal income tax purposes shall be computed by
reference to the Gross Asset Value of the item of Property disposed of, notwithstanding that the adjusted tax basis of such Property differs from its Gross Asset Value; 

 

	 	(vi)	In lieu of the depreciation, amortization, and other cost recovery deductions taken into account in computing such taxable income or loss, there shall be taken into
account Depreciation for such Allocation Year, computed in accordance with the definition of Depreciation; 

  

	 	(vii)	To the extent an adjustment to the adjusted tax basis of any item of Property pursuant to Code Sections 734(b) or 743(b) is required, pursuant to Regulations
Section 1.704-1(b)(2)(iv)(m)(4), to be taken into account in determining Capital Accounts as a result of a distribution other than in liquidation of a Partner’s Partnership Interest, the amount of such adjustment shall be treated as an
item of gain (if the adjustment increases the basis of the item of Property) or loss (if the adjustment decreases such basis) from the disposition of such item of Property and shall be taken into account for purposes of computing Profits or Losses;
and 

  

	 	(ix)	Notwithstanding any other provision of this definition, any items that are specially allocated pursuant to Sections 5.03 or 5.04 shall not be taken into account in
computing Profits or Losses. 

 The amounts of the items of Partnership income, gain, loss, or deduction available to be specially
allocated pursuant to Sections 5.03 and 5.04 shall be determined by applying rules analogous to those set forth in subparagraphs (i) through (ix) above. For the avoidance of doubt, any guaranteed payment that accrues with respect to an
Allocation Year will be treated as an item of deduction of the Partnership for purposes of computing Profits and Losses in accordance with the provisions of Regulations Section 1.707-1(c). 

(oo) “Property” means all real and personal property acquired by the Partnership, including cash, and any improvements
thereto, and shall include both tangible and intangible property. 

  
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 (pp) “Quarter” means, unless the context requires otherwise, a fiscal
quarter of the Partnership, or, with respect to the fiscal quarter of the Partnership which includes the Effective Date, the portion of such fiscal quarter from and after the Effective Date. 

(qq) “Regulations” means the Income Tax Regulations, including Temporary Regulations, promulgated under the Code, as
such regulations are amended from time to time. 
 (rr) “Regulatory Allocations” has the meaning set forth in
Section 5.04. 
 (ss) “Representative” has the meaning set forth in Section 8.03(a). 

(tt) “Subsidiary” means, with respect to any Person, (a) a corporation of which more than 50% of the voting power
of shares entitled (without regard to the occurrence of any contingency) to vote in the election of directors or other governing body of such corporation is owned, directly or indirectly, at the date of determination, by such Person, by one or more
Subsidiaries of such Person or a combination thereof, (b) a partnership (whether general or limited) in which such Person or a Subsidiary of such Person is, at the date of determination, a general or limited partner of such partnership, but
only if more than 50% of the partnership interests of such partnership (considering all of the partnership interests of the partnership as a single class) is owned, directly or indirectly, at the date of determination, by such Person, by one or more
Subsidiaries of such Person, or a combination thereof; or (c) any other Person (other than a corporation or a partnership) in which such Person, one or more Subsidiaries of such Person, or a combination thereof, directly or indirectly, at the
date of determination, has (i) at least a majority ownership interest or (ii) the power to elect or direct the election of a majority of the directors or other governing body of such Person. As of the Effective Date, Marathon Pipe Line LLC
and Ohio River Pipe Line LLC are the only Subsidiaries of the Partnership. 
 (uu) “Tax Matters Partner” has
the meaning set forth in Section 5.09(a). 
 (vv) “Unanimous Approval Matter” has the meaning set forth in
Section 8.02. 
 1.02 Construction. Unless the context clearly indicates otherwise: 

(a) the gender (or lack of gender) of all words used in this Agreement includes the masculine, feminine, and neuter; 

(b) references to Articles and Sections refer to Articles and Sections of this Agreement; 

(c) references to money refer to legal currency of the United States of America; 

(d) accounting terms shall be construed in accordance with GAAP; 

  
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 (e) the words “herein,” “hereof” and “hereunder” and other
words of similar import refer to this Agreement as a whole and not to any particular paragraph, subparagraph, section, subsection or other subdivision and the words “include,” “includes” and “including” shall be deemed
to be followed by the words “without limitation”; 
 (f) headings are for reference purposes only and are not intended
to describe, interpret, define, or limit the scope, extent, or intent of this Agreement or any provision; and 
 (g) each party
agrees that, to the fullest extent permitted by law, any rule of construction to the effect that any ambiguities are to be resolved against the drafting party shall not be employed in the interpretation or construction of this Agreement. 

Article 2 

Business, Purpose, and Term of Partnership 
 2.01 Formation and Continuation. The Partnership was formed as a limited partnership by the filing of the Certificate with the Delaware Secretary of State and the entry into the Original Agreement
and is and shall be governed by the provisions of the Act, as modified by the terms and conditions set forth in this Agreement. Except as provided in this Agreement, the rights, duties, liabilities and powers of the Partners shall be as provided in
the Act. The Partners hereby continue the Partnership under this Agreement without interruption or dissolution. 
 2.02 Name.
The name of the Partnership shall be MPLX Pipe Line Holdings LP, and all business shall be conducted in such name. The General Partner in its sole discretion may change the name of the Partnership at any time and may amend this Agreement and the
Certificate to effect such name change, notwithstanding Section 13.06. 
 2.03 Registered Agent and Office. The
registered office of the Partnership in the State of Delaware is Corporation Trust Center, 1209 Orange Street, Wilmington, Delaware 19801. The registered agent at such address is The Corporation Trust Company. The principal office of the Partnership
shall be located at 200 East Hardin Street, Findlay, Ohio 45840 and may be changed by the General Partner from time to time in its sole discretion. 
 2.04 Purpose and Powers. The purpose of the Partnership is to engage in any lawful act or activity for which limited partnerships may be formed under the Act (either directly or indirectly through
one or more Subsidiaries). In furtherance of its purposes, but subject to all of the provisions of this Agreement, the Partnership shall have all of the powers and rights conferred on limited partnerships formed under the Act. 

2.05 Term. The term of the Partnership commenced upon the filing of the Certificate as described in Section 2.06 and shall
continue until the dissolution of the Partnership in accordance with the provisions of Article 12. The existence of the Partnership as a separate legal entity shall continue until the cancellation of the Certificate (as amended from time to time) in
the manner provided in the Act. 

  
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 2.06 Filings. The Certificate was filed as required by and in conformance with
Section 17-206 of the Act on or about April 2, 2012. The General Partner shall further cause to be executed, filed and recorded and shall cause to be published, if required by Applicable Law, such other certificates or other instruments as
may be necessary or appropriate under the Applicable Law of any state in which the Partnership does business. 
 Article 3

 Partners 
 3.01 Partners; Percentage Interests. The names and addresses of the Partners, their respective percentage interests in the Partnership (“Percentage Interests”), and type of
Partnership Interest held are as follows: 
  

									
	 Partners
	  	Percentage
Interest	 	 	Type of Interest	 
	 MPLX Operations LLC

200 East Hardin Street

Findlay, OH 45840
	  	 	51.00	% 	 	 	General Partner	  
	 MPL Investment LLC

539 South Main Street

Findlay, OH 45840
	  	 	49.00	% 	 	 	Limited Partner	  

 3.02 Adjustments in Percentage Interests. The respective Percentage Interests of the Partners
shall be adjusted (a) at the time of any transfer of all or a portion of such Partner’s Partnership Interest pursuant to Section 9.01 and (b) at the time of the admission of each new Partner in accordance with this Agreement, in
each case to take into account such transfer or admission of a new Partner. 
 Article 4 

Capital Contributions 
 4.01 Capitalization of the Partnership. Subject to Section 8.02, the Partnership is authorized to issue two classes of Partnership Interests. The Partnership Interests shall be designated as
General Partner Interests and Limited Partner Interests, each having such rights, powers, preferences and designations as set forth in this Agreement. 
 4.02 Capital Contributions. 
 (a) Organizational Capital Contributions.
In connection with the formation of the Partnership under the Act, MPLX Operations LLC made an initial Capital Contribution to the Partnership in the amount of $500.00, for a 50% General Partner Interest and has been admitted as, and hereby
continues as, the General Partner of the Partnership, and MPL Investment LLC made an initial Capital Contribution to the Partnership in the amount of $500.00 for a 50% Limited Partner Interest and has been admitted as, and hereby continues as, a
Limited Partner of the Partnership. 

  
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 (b) Contributions by the General Partner. On the Effective Date and pursuant to the
Contribution Agreement, the General Partner contributed a 51% limited liability company interest in each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC, each a Delaware limited liability company, to the Partnership, as a Capital
Contribution, in consideration of an increase in its General Partner Interest to a 51% General Partner Interest, subject to all of the rights, privileges and duties of the General Partner under this Agreement. 

(c) Contributions by the Limited Partner. On the Effective Date, pursuant to and as described in the Contribution Agreement, MPL
Investment LLC contributed a 49% limited liability company interest in each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC, each a Delaware limited liability company, to the Partnership, as a Capital Contribution, in consideration of a
change in its Limited Partner Interest to a 49% Limited Partner Interest, subject to all of the rights, privileges and duties of Limited Partners under this Agreement. 
 (d) Additional Capital Contributions. The Partners shall make additional Capital Contributions to the Partnership at such times and in such amounts as determined by the Partners in accordance with
this Agreement. 
 (e) No Third Party Beneficiaries. The provisions of this Agreement, including this Section 4.02,
are intended solely to benefit the Partners and, to the fullest extent permitted by Applicable Law, shall not be construed as conferring any benefit upon any creditor of the Partnership, and no such creditor of the Partnership shall be a third-party
beneficiary of this Agreement, and no Partner shall have any duty or obligation to any creditor of the Partnership to issue any call for or contribute any capital pursuant to this Agreement. 

4.03 Withdrawal of Capital; Interest. No Partner may withdraw capital or receive any distributions from the Partnership except as
specifically provided herein. No interest shall be paid by the Partnership on any capital contributions. 
 Article 5

 Allocations and Other Tax Matters 
 5.01 Profits. After giving effect to the special allocations set forth in Sections 5.03 and 5.04, and any allocation of Profits set forth in Section 5.03(b), Profits for any Allocation Year
shall be allocated among the Partners in proportion to their respective Percentage Interests. 
 5.02 Losses. 

(a) After giving effect to the special allocations set forth in Sections 5.03 and 5.04, Losses for any Allocation Year shall be allocated
among the Partners in proportion to their respective Percentage Interests. 
 (b) The Losses allocated pursuant to
Section 5.02(a) shall not exceed the maximum amount of Losses that can be so allocated without causing any Partner to have an Adjusted Capital Account Deficit at the end of any Allocation Year. In the event some but not all of the Partners
would have Adjusted Capital Account Deficits as a result of an allocation of Losses pursuant to Section 5.02(a), Losses that would otherwise be allocated to a Partner pursuant to 

  
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Section 5.02(a) but for the limitation set forth in this Section 5.02(b) shall be allocated to the remaining Partners in proportion to their relative Percentage Interests. All remaining
Losses in excess of the limitation set forth in this Section 5.02(b) shall be allocated to the General Partner. Profits for any Allocation Year subsequent to an Allocation Year for which the limitation set forth in this Section 5.02(b) was
applicable shall be allocated (i) first, to reverse any Losses allocated to the General Partner pursuant to the third sentence of this Section 5.02(b), and (ii) second, to reverse any Losses allocated to the Partners pursuant to the
second sentence of this Section 5.02(b) and in proportion to how such Losses were allocated. 
 5.03 Special
Allocations. The following special allocations shall be made in the following order: 
 (a) Minimum Gain Chargeback.
Except as otherwise provided in Regulations Section 1.704-2(f), notwithstanding any other provision of this Article 5, if there is a net decrease in Minimum Gain during any Allocation Year, each Partner shall be specially allocated items of
Partnership income and gain for such Allocation Year (and, if necessary, subsequent Allocation Years) in an amount equal to such Partner’s share of the net decrease in Minimum Gain, determined in accordance with Regulations
Section 1.704-2(g). Allocations pursuant to the previous sentence shall be made in proportion to the respective amounts required to be allocated to each Partner pursuant thereto. The items to be so allocated shall be determined in accordance
with Regulations Sections 1.704-2(f)(6) and 1.704-2(g)(2). This Section 5.03(a) is intended to comply with the minimum gain chargeback requirement in Regulations Section 1.704-2(f) and shall be interpreted consistently therewith.

 (b) Partner Minimum Gain Chargeback. Except as otherwise provided in Regulations Section 1.704-2(i)(4),
notwithstanding any other provision of this Article 5, if there is a net decrease in Partner Nonrecourse Debt Minimum Gain attributable to a Partner Nonrecourse Debt during any Allocation Year, each Partner who has a share of the Partner Nonrecourse
Debt Minimum Gain attributable to such Partner Nonrecourse Debt, determined in accordance with Regulations Section 1.704-2(i)(5), shall be specially allocated items of Partnership income and gain for such Allocation Year (and, if necessary,
subsequent Allocation Years) in an amount equal to such Partner’s share of the net decrease in Partner Nonrecourse Debt Minimum Gain attributable to such Partner Nonrecourse Debt, determined in accordance with Regulations
Section 1.704-2(i)(4). Allocations pursuant to the previous sentence shall be made in proportion to the respective amounts required to be allocated to each Partner pursuant thereto. The items to be so allocated shall be determined in accordance
with Regulations Sections 1.704-2(i)(4) and 1.704-2(j)(2). This Section 5.03(b) is intended to comply with the minimum gain chargeback requirement in Regulations Section 1.704-2(i)(4) and shall be interpreted consistently therewith.

 (c) Qualified Income Offset. In the event that any Partner unexpectedly receives any adjustments, allocations, or
distributions described in Regulations Sections 1.704-1(b)(2)(ii)(d)(4), 1.704-1(b)(2)(ii)(d)(5), or 1.704-1(b)(2)(ii)(d)(6), items of Partnership income and gain shall be allocated to such Partner in an amount and manner sufficient to eliminate, to
the extent required by the Regulations, the Adjusted Capital Account Deficit of such Partner as quickly as possible; provided that an allocation pursuant to this Section 5.03(c) shall be made only if and to the extent that such Partner
would have an Adjusted Capital Account Deficit after all other allocations provided for in this Article 5 have been tentatively made as if this Section 5.03(c) were not in this Agreement. 

  
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 (d) Gross Income Allocation. In the event that any Partner has an Adjusted Capital
Account Deficit at the end of any Allocation Year, each such Partner shall be allocated items of Partnership income and gain in the amount of such deficit as quickly as possible; provided that an allocation pursuant to this
Section 5.03(d) shall be made only if and to the extent that such Partner would have an Adjusted Capital Account Deficit after all other allocations provided for in this Article 5 have been tentatively made as if Section 5.03(c) and this
Section 5.03(d) were not in this Agreement. 
 (e) Nonrecourse Deductions. Nonrecourse Deductions for any Allocation
Year shall be allocated among the Partner in proportion to their respective Percentage Interests. 
 (f) Partner Nonrecourse
Deductions. Any Partner Nonrecourse Deductions for any Allocation Year shall be specially allocated to the Partner who bears the economic risk of loss with respect to the Partner Nonrecourse Debt to which such Partner Nonrecourse Deductions are
attributable in accordance with Regulations Section 1.704-2(i)(1). 
 (g) Nonrecourse Liabilities. Nonrecourse
Liabilities of the Partnership described in Regulations Section 1.752-3(a)(3) shall be allocated among the Partners in the manner chosen by the General Partner and consistent with such section of the Regulations. 

(h) Section 754 Adjustments. To the extent an adjustment to the adjusted tax basis of any Partnership asset, pursuant to Code
Section 734(b) or Code Section 743(b) is required, pursuant to Regulations Section 1.704-1(b)(2)(iv)(m)(2) or 1.704-1(b)(2)(iv)(m)(4), to be taken into account in determining Capital Accounts as the result of a distribution to a
Partner in complete liquidation of such Partner’s Partnership Interest, the amount of such adjustment to Capital Accounts shall be treated as an item of gain (if the adjustment increases the basis of the asset) or loss (if the adjustment
decreases such basis) and such gain or loss shall be specially allocated to the Partners in accordance with their interests in the Partnership in the event Regulations Section 1.704-1(b)(2)(iv)(m)(2) applies, or to the Partner to whom such
distribution was made in the event Regulations Section 1.704-1(b)(2)(iv)(m)(4) applies. 
 5.04 Curative Allocations.
The allocations set forth in Sections 5.03 (the “Regulatory Allocations”) are intended to comply with certain requirements of the Regulations. It is the intent of the Partners that, to the extent possible, the Regulatory
Allocations shall be offset either with special allocations of other items of Partnership income, gain, loss, or deduction pursuant to this Section 5.04. Therefore, notwithstanding any other provision of this Article 5 (other than the
Regulatory Allocations), the Tax Matters Partner shall make such offsetting special allocations of Partnership income, gain, loss, or deduction in whatever manner it determines appropriate so that, after such offsetting allocations are made, each
Partner’s Capital Account balance is, to the extent possible, equal to the Capital Account balance such Partner would have had if the Regulatory Allocations were not part of this Agreement and all Partnership items were allocated pursuant to
Sections 5.01, 5.02, and 5.03 (other than the Regulatory Allocations). In exercising its discretion under this Section 5.04, the Tax Matters Partner shall take into account future Regulatory Allocations that, although not yet made, are likely
to offset other Regulatory Allocations previously made. 

  
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 5.05 Other Allocation Rules. 

(a) Profits, Losses, and any other items of income, gain, loss, or deduction shall be allocated to the Partners pursuant to this Article
5 as of the last day of each Fiscal Year; provided that Profits, Losses, and such other items shall also be allocated at such times as the Gross Asset Values of the Partnership’s assets are adjusted pursuant to subparagraph (ii) of
the definition of “Gross Asset Value” in Section 1.01. 
 (b) For purposes of determining the Profits, Losses, or
any other items allocable to any period, Profits, Losses, and any such other items shall be determined on a daily proration basis by the General Partner under Code Section 706 and the Regulations thereunder. 

5.06 Tax Allocations: Code Section 704(c). 
 (a) Except as otherwise provided in this Section 5.06, each item of income, gain, loss and deduction of the Partnership for federal income tax purposes shall be allocated among the Partners in the
same manner as such items are allocated for book purposes under this Article 5. In accordance with Code Section 704(c) and the Regulations thereunder, income, gain, loss, and deduction with respect to any Property contributed to the capital of
the Partnership shall, solely for tax purposes, be allocated among the Partners so as to take account of any variation between the adjusted basis of such Property to the Partnership for federal income tax purposes and its initial Gross Asset Value
(computed in accordance with the definition of Gross Asset Value). Such allocation shall be made in accordance with the “remedial method” described by Regulations Section 1.704-3(d). 

(b) In the event the Gross Asset Value of any Property is adjusted pursuant to subparagraph (ii) of the definition of Gross Asset
Value, subsequent allocations of income, gain, loss, and deduction with respect to such Property shall take account of any variation between the adjusted basis of such Property for federal income tax purposes and its Gross Asset Value in the same
manner as under Code Section 704(c) and the Regulations thereunder. Such allocation shall be made in accordance with the “remedial method” described by Regulations Section 1.704-3(d). 

(c) In accordance with Treasury Regulations Sections 1.1245-1(e) and 1.250-1(f), any gain allocated to the Partners upon the sale or
other taxable disposition of any Partnership asset shall, to the extent possible, after taking into account other required allocations of gain pursuant to this Section 5.06(c), be characterized as “recapture income” in the same
proportions and to the same extent as such Partners (or their predecessors in interest) have been allocated any deductions directly or indirectly giving rise to the treatment of such gains as “recapture income.” 

(d) Any elections or other decisions relating to such allocations shall be made by the General Partner in any manner that reasonably
reflects the purpose and intention of this Agreement. Allocations pursuant to this Section 5.06 are solely for purposes of federal, state, and local taxes and shall not affect, or in any way be taken into account in computing, any
Partner’s Capital Account or share of Profits, Losses, other items, or distributions pursuant to any provision of this Agreement. 

  
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 5.07 Tax Elections. 

(a) The Partners intend that the Partnership be treated as a partnership or a “disregarded entity” for federal income tax
purposes. Accordingly, neither the Tax Matters Partner nor any Limited Partner shall file any election or return on its own behalf or on behalf of the Partnership that is inconsistent with that intent. 

(b) Any elections or other decisions relating to tax matters that are not expressly provided herein, shall be made jointly by the
Partners in any manner that reasonably reflects the purpose and intention of this Agreement. 
 5.08 Tax Returns.

 (a) The Partnership shall cause to be prepared and timely filed all federal, state, local and foreign income tax returns
and reports required to be filed by the Partnership and its subsidiaries. The Partnership shall provide copies of all the Partnership’s federal, state, local and foreign tax returns (and any schedules or other required filings related to such
returns) that reflect items of income, gain, deduction, loss or credit that flow to separate Partner returns, to the Partners for their review and comment prior to filing, except as otherwise agreed by the Partners. The Partners agree in good faith
to resolve any difference in the tax treatment of any item affecting such returns and schedules. However, if the Partners are unable to resolve the dispute, the position of the Tax Matters Partner shall be followed if nationally recognized tax
counsel acceptable to the Partners provides an opinion that substantial authority exists for such position. Substantial authority shall be given the meaning ascribed to it in Code Section 6662. If the Partners are unable to resolve the dispute
prior to the due date for filing the return, including approved extensions, the position of the Tax Matters Partner shall be followed, and amended returns shall be filed if necessary at such time the dispute is resolved. The costs of the dispute
shall be borne by the Partnership. The Partners agree to file their separate federal income tax returns in a manner consistent with the Partnership’s return, the provisions of this Agreement and in accordance with Applicable Law. 

(b) The Partnership shall elect the most rapid method of depreciation and amortization allowed under Applicable Law, unless the Partners
agree otherwise. 
 (c) The Partners shall provide each other with copies of all correspondence or summaries of other
communications with the Internal Revenue Service or any state, local or foreign taxing authority (other than routine correspondence and communications) regarding the tax treatment of the Partnership’s operations. No Partner shall enter into
settlement negotiations with the Internal Revenue Service or any state, local or foreign taxing authority with respect to any issue concerning the Partnership’s income, gains, losses, deductions or credits if the tax adjustment attributable to
such issue (assuming the then current aggregate tax rate) would be $2 million or greater, without first giving reasonable advance notice of such intended action to the other Partners. 

  
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 5.09 Tax Matters Partner. 

(a) The General Partner shall be the “Tax Matters Partner” of the Partnership within the meaning of
Section 6231(a)(7) of the Code, and shall act in any similar capacity under the Applicable Law of any state, local or foreign jurisdiction, but only with respect to returns for which items of income, gain, loss, deduction or credit flow to the
separate returns of the Partners. If at any time there is more than one General Partner, the Tax Matters Partner shall be the General Partner with the largest Percentage Interest following such admission. 

(b) The Tax Matters Partner shall incur no Liability (except as a result of the gross negligence or willful misconduct of the Tax Matters
Partner) to the Partnership or the other Partners including, but not limited to, Liability for any additional taxes, interest or penalties owed by the other Partners due to adjustments of Partnership items of income, gain, loss, deduction or credit
at the Partnership level. 
 5.10 Duties of Tax Matters Partner. 

(a) Except as provided in Section 5.10(b), the Tax Matters Partner shall cooperate with the other Partners and shall promptly
provide the other Partners with copies of notices or other materials from, and inform the other Partners of discussions engaged with, the Internal Revenue Service or any state, local or foreign taxing authority and shall provide the other Partners
with notice of all scheduled proceedings, including meetings with agents of the Internal Revenue Service or any state, local or foreign taxing authority, technical advice conferences, appellate hearings, and similar conferences and hearings, as soon
as possible after receiving notice of the scheduling of such proceedings, but in any case prior to the date of such scheduled proceedings. 
 (b) The duties of the Tax Matters Partner under Section 5.10(a) shall not apply with respect to notices, materials, discussions, proceedings, meetings, conferences, or hearings involving any issue
concerning the Partnership’s income, gains, losses, deductions or credits if the tax adjustment attributable to such issue (assuming the then current aggregate tax rate) would be less than $2 million except as otherwise required under
Applicable Law. 
 (c) The Tax Matters Partner shall not extend the period of limitations or assessments without the consent of
the other Partners, which consent shall not be unreasonably withheld. 
 (d) The Tax Matters Partner shall not file a petition
or complaint in any court, or file any claim, amended return or request for an administrative adjustment with respect to partnership items, after any return has been filed, with respect to any issue concerning the Partnership’s income, gains,
losses, deductions or credits if the tax adjustment attributable to such issue (assuming the then current aggregate tax rate) would be $2 million or greater, unless agreed by the other Partners. If the other Partners do not agree, the position of
the Tax Matters Partner shall be followed if nationally recognized tax counsel acceptable to all Partners issues an opinion that a reasonable basis exists for such position. Reasonable basis shall be given the meaning ascribed to it for purposes of
applying Code Section 6662. The costs of the dispute shall be borne by the Partnership. 

  
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 (e) The Tax Matters Partner shall not enter into any settlement agreement with the Internal
Revenue Service or any state, local or foreign taxing authority, either before or after any audit of the applicable return is completed, with respect to any issue concerning the Partnership’s income, gains, losses, deductions or credits, unless
any of the following apply: 
 (i) all Partners agree to the settlement; 

(ii) the tax effect of the issue if resolved adversely would be, and the tax effect of settling the issue is, proportionately the same for
all Partners (assuming each otherwise has substantial taxable income); 
 (iii) the Tax Matters Partner determines that the
settlement of the issue is fair to the Partners; or 
 (iv) tax counsel acceptable to all Partners determines that the settlement
is fair to all Partners and is one it would recommend to the Partnership if all Partners were owned by the same person and each had substantial taxable income. 
 In all events, the costs incurred by the Tax Matters Partner in performing its duties hereunder shall be borne by the Partnership. 
 (f) The Tax Matters Partner may request extensions to file any tax return or statement without the written consent of, but shall so inform, the other Partners. 

5.11 Survival of Provisions. The provisions of this Agreement regarding the Partnership’s tax returns and Tax Matters Partner
shall survive the termination of the Partnership and the transfer of any Partner’s interest in the Partnership and shall remain in effect for the period of time necessary to resolve any and all matters regarding the federal, state, local and
foreign taxation of the Partnership and items of Partnership income, gain, loss, deduction and credit. 
 Article 6

 Distributions 
 6.01 Distributions of Distributable Cash. Within 45 days following the end of each Quarter commencing with the Quarter ending
[            ], 2012, the Partnership shall distribute to the Partners pro rata in accordance with their respective Percentage Interests an amount equal to 100% of Distributable
Cash. Notwithstanding any other provision of this Agreement, the Partnership shall not make a distribution to the Partners on account of their interests in the Partnership if such distribution would violate the Act or other applicable law.

 6.02 Liquidating Distributions. Notwithstanding any other provision of this Article 6, distributions with respect to
the Quarter in which a dissolution of the Partnership occurs shall be made in accordance with Article 12. 

  
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 6.03 Distribution in Kind. The Partnership shall not distribute to the Partners any
assets in kind unless approved by the Partners in accordance with this Agreement. If cash and property in kind are to be distributed simultaneously, the Partnership shall distribute such cash and property in kind in the same proportion to each
Partner, unless otherwise approved by the Partners in accordance with this Agreement. 
 Article 7 

Books and Records 
 7.01 Books and Records; Examination. The General Partner shall keep or cause to be kept such books of account and records with respect to the Partnership’s business as it may deem necessary
and appropriate. Each Partner and its duly authorized representatives shall have the right, for any purpose reasonably related to its interest in the Partnership, at any time to examine, or to appoint independent certified public accountants (the
fees of which shall be paid by such Partner) to examine, the books, records and accounts of the Partnership and its subsidiaries, their operations and all other matters that such Partner may wish to examine, including, without limitation, all
documentation relating to actual or proposed transactions between the Partnership and any Partner or any Affiliate of a Partner. The Partnership’s books of account shall be kept using the method of accounting determined by the General Partner
in its sole discretion. 
 7.02 Reports. The General Partner shall prepare and send to each Partner (at the same time)
promptly such financial information of the Partnership as a Partner shall from time to time reasonably request, for any purpose reasonably related to its interest in the Partnership. The General Partner shall, for any purpose reasonably related to a
Partner’s interest in the Partnership, permit examination and audit of the Partnership’s books and records by both the internal and independent auditors of its Partners. 

Article 8 

Management and Voting 
 8.01 Management. The General Partner shall conduct, direct and manage the business of the Partnership. Except as otherwise expressly provided in this Agreement, all management powers over the
business and affairs of the Partnership shall be exclusively vested in the General Partner, and no Limited Partner shall have any management power over the business and affairs of the Partnership. In addition to the powers now or hereafter granted a
general partner of a limited partnership under Applicable Law or which are granted to the General Partner under any other provision of this Agreement, the General Partner, subject to Section 8.02, shall have full power and authority to do all
things on such terms as it, in its sole discretion, may deem necessary or appropriate to conduct the business of the Partnership and to effectuate the purposes set forth in Section 2.04. 

8.02 Matters Constituting Unanimous Approval Matters. Notwithstanding anything in this Agreement to the contrary, and subject to
the provisions of Section 8.03(c), each of the following matters, and only the following matters, shall constitute a “Unanimous Approval Matter” which requires the prior approval of the Partners pursuant to
Section 8.03(c): 

  
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 (a) any merger, consolidation, reorganization or similar transaction between or among the
Partnership and any Person (other than a transaction between the Partnership and a direct or indirect wholly owned Subsidiary of the Partnership) or any sale or lease of all or substantially all of the Partnership’s assets to any Person (other
than a direct or indirect wholly owned Subsidiary of the Partnership); 
 (b) the creation of any new class of Partnership
Interests or the issuance of any additional Partnership Interests or the issuance of any security that is convertible into or exchangeable for a Partnership Interest; 
 (c) the admission or withdrawal of any Person as a Partner other than pursuant to Section 9.02 or Section 9.04, as applicable; 

(d) the commencement of a voluntary case with respect to the Partnership or any of its Subsidiaries under any applicable bankruptcy,
insolvency or other similar Applicable Law now or hereafter in effect, or the consent to the entry of an order for relief in an involuntary case under any such Applicable Law, or the consent to the appointment of or the taking possession by a
receiver, liquidator, assignee, custodian, trustee or sequestrator (or similar official) of the Partnership or any of its Subsidiaries or for any substantial part of the Partnership’s or any of its Subsidiaries’ property, or the making of
any general assignment for the benefit of creditors; 
 (e) the modification, alteration or amendment of the amount, timing,
frequency or method of calculation of distributions to the Partners from that provided in Article 6; 
 (f) (i) the approval of
any distribution by the Partnership to the Partners of any assets in kind, (ii) the approval of any distribution by the Partnership to the Partners of cash or property in kind on a non-pro rata basis, and (iii) the determination of the
value assigned to distributions of property in kind; 
 (g) the making of any additional Capital Contributions to the
Partnership; and 
 (h) any other matter expressly requiring the approval of all Partners herein or otherwise referencing any
determination, decision, approval or other form of authorization by the Partners in accordance with this Agreement. 
 8.03
Meetings and Voting. 
 (a) Representatives. For purposes of this Article 8, each Partner shall be represented by a
designated representative (each, a “Representative”), who shall be appointed by, and may be removed with or without cause by, the Partner that approved such Person. Each Representative shall have the full authority to act on behalf
of the Partner who designated such Representative. To the fullest extent permitted by Applicable Law, each Representative shall be deemed the agent of the Partner that appointed him, and each Representative shall not be an agent of the Partnership
or the other Partners. The action of a Representative at a meeting of the Partners (or through a written consent) shall bind the Partner that designated that Representative, and the other Partners shall be entitled to rely upon such action without
further inquiry or investigation as to the actual authority (or lack thereof) of such Representative. 

  
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 (b) Meetings and Voting. Meetings of Partners shall be at such times and locations as
the General Partner shall determine in its sole discretion. The General Partner shall provide notice to the Limited Partners of any meetings of Partners in any manner that it deems reasonable and appropriate under the circumstances. Each Partner,
acting through its Representative, shall be entitled to cast one vote on all matters requiring a vote of the Partners under this Agreement. In exercising their voting rights under this Agreement, the Representatives may act at a meeting in person or
by proxy or by unanimous written consent without a meeting. 
 (c) Unanimous Approval Matters. All Unanimous Approval
Matters shall be approved by the unanimous affirmative vote of the Representatives. The parties acknowledge and agree that all references in this Agreement to any determination, decision, approval or other form of authorization by all Partners or
each of the Partners shall be deemed to mean that such determination, decision, approval or other form of authorization shall constitute a Unanimous Approval Matter that requires the unanimous approval of the Partners in accordance with this
Section 8.03(c). 
 8.04 Reliance by Third Parties. Persons dealing with the Partnership are entitled to rely
conclusively upon the power and authority of the General Partner set forth in this Agreement. Neither a Limited Partner nor its Representative shall have the authority to bind the Partnership or any of its Subsidiaries. 

Article 9 

Transfer of Partnership Interests 
 9.01 Restrictions on Transfers. 
 (a) General. Except as expressly
provided by this Article 9, no Partner shall transfer all or any part of its Partnership Interests to any Person without first obtaining the written approval of each of the other Partners, which approval may be granted or withheld in their sole
discretion. 
 (b) Transfer by Operation of Law. In the event a Partner shall be party to a merger, consolidation or
similar business combination transaction with another Person or sell all or substantially all its assets to another Person, such Partner may transfer all or part of its Partnership Interests to such other Person without the approval of any other
Partner. 
 (c) Consequences of an Unpermitted Transfer. Any transfer of a Partner’s Partnership Interest in
violation of the applicable provisions of this Agreement shall be void. 
 9.02 Conditions for Admission. No transferee
of all or a portion of the Partnership Interests of any Partner shall be admitted as a Partner hereunder unless such Partnership Interests are transferred in compliance with the applicable provisions of this Agreement. Each such transferee shall
have executed and delivered to the Partnership such instruments as the General Partner deem necessary or appropriate in its reasonable discretion to effectuate the admission of such transferee as a Partner and to confirm the agreement of such
transferee to be 

  
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bound by all the terms and provisions of this Agreement. The admission of a transferee shall be effective immediately prior to such transfer, and immediately following such admission, the
transferor shall cease to be a Partner (to the extent it transferred its entire Partnership Interest). If the General Partner transfers its entire interest in the Partnership, the transferee General Partner, to the extent admitted as a substitute
General Partner, is hereby authorized to, and shall, continue the Partnership without dissolution. 
 9.03 Allocations and
Distributions. Subject to applicable Treasury Regulations, upon the transfer of all the Partnership Interests of a Partner as herein provided, the Profit or Loss of the Partnership attributable to the Partnership Interests so transferred for the
Fiscal Year in which such transfer occurs shall be allocated between the transferor and transferee as of the effective date of the assignment, and such allocation shall be based upon any permissible method agreed to by the Partners that is provided
for in Code Section 706 and the Treasury Regulations issued thereunder. 
 9.04 Restriction on Resignation or
Withdrawal. Except in connection with a transfer permitted pursuant to Section 9.01, no Partner shall withdraw from the Partnership without the consent of each of the other Partners. To the extent permitted by law, any purported withdrawal
from the Partnership in violation of this Section 9.04 shall be null and void. 
 Article 10 

Liability, Exculpation and Indemnification 
 10.01 Liability for Partnership Obligations. Except as otherwise required by the Act, the Liabilities of the Partnership shall be solely the Liabilities of the Partnership, and no Covered Person
(other than the General Partner) shall be obligated personally for any such Liability of the Partnership solely by reason of being a Covered Person. 
 10.02 Disclaimer of Duties and Exculpation. 
 (a) Except as otherwise
expressly provided in this Agreement, no Covered Person shall have any duty (fiduciary or otherwise) or obligation to the Partnership, the Partners or to any other Person bound by this Agreement, and in taking, or refraining from taking, any action
required or permitted under this Agreement or under Applicable Law, each Covered Person shall be entitled to consider only such interests and factors as such Covered Person deems advisable, including its own interests, and need not consider any
interest of or factors affecting, any other Covered Person or the Partnership notwithstanding any duty otherwise existing at law or in equity. To the extent that a Covered Person is required or permitted under this Agreement to act in “good
faith” or under another express standard, such Covered Person shall act under such express standard and shall not be subject to any other or different standard under this Agreement or otherwise existing under Applicable Law or in equity.

 (b) The provisions of this Agreement, to the extent that they restrict or eliminate the duties (including fiduciary duties)
and Liabilities of a Covered Person otherwise existing under Applicable Law or in equity, are agreed by the Partners to replace such other duties and Liabilities of such Covered Person in their entirety, and no Covered Person shall be liable to the
Partnership, the Partners or any other Person bound by this Agreement for its good faith reliance on the provisions of this Agreement. 

  
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 (c) To the fullest extent permitted by law, no Covered Person shall be liable to the
Partnership, the Partners or any other Person bound by this Agreement for any cost, expense, loss, damage, claim or Liability incurred by reason of any act or omission performed or omitted by such Covered Person in such capacity, whether or not such
Person continues to be a Covered Person at the time of such cost, expense, loss, damage, claim or Liability is incurred or imposed, if the Covered Person acted in good faith reliance on the provisions of this Agreement, and, with respect to any
criminal action or proceeding, such Covered Person had no reasonable cause to believe its conduct was unlawful. 
 (d) A Covered
Person shall be fully protected from liability to the Partnership, the Partners and any other Person bound by this Agreement in acting or refraining from acting in good faith reliance upon the records of the Partnership and such other information,
opinions, reports or statements presented to the Partnership by any Person as to any matters the Covered Person reasonably believes are within such other Person’s professional or expert competence and who has been selected with reasonable care
by or on behalf of the Partnership, including information, opinions, reports or statements as to the value and amount of the assets, Liabilities, Profits and Losses of the Partnership. 

10.03 Indemnification. 
 (a) To the fullest extent permitted by law but subject to the limitations expressly provided in this Agreement, all Covered Persons shall be indemnified and held harmless by the Partnership from and
against any and all losses, claims, damages, liabilities, joint or several, expenses (including legal fees and expenses), judgments, fines, penalties, interest, settlements or other amounts arising from any and all threatened, pending or completed
claims, demands, actions, suits or proceedings, whether civil, criminal, administrative or investigative, and whether formal or informal and including appeals, in which any Covered Person may be involved, or is threatened to be involved, as a party
or otherwise, by reason of its status as a Covered Person and acting (or refraining to act) in such capacity on behalf of or for the benefit of the Partnership; provided, that the Covered Person shall not be indemnified and held harmless pursuant to
this Agreement if there has been a final and non-appealable judgment entered by a court of competent jurisdiction determining that, in respect of the matter for which the Covered Person is seeking indemnification pursuant to this Agreement, the
Covered Person acted in bad faith or engaged in intentional fraud, willful misconduct or, in the case of a criminal matter, acted with knowledge that the Covered Person’s conduct was unlawful. Any indemnification pursuant to this
Section 10.03 shall be made only out of the assets of the Partnership, it being agreed that the General Partner shall not be personally liable for such indemnification and shall have no obligation to contribute or loan any monies or property to
the Partnership to enable it to effectuate such indemnification. 
 (b) To the fullest extent permitted by law, expenses
(including legal fees and expenses) incurred by a Covered Person who is indemnified pursuant to Section 10.03(a) in defending any claim, demand, action, suit or proceeding shall, from time to time, be advanced by the Partnership prior to a
final and non-appealable judgment entered by a court of competent 

  
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jurisdiction determining that, in respect of the matter for which the Covered Person is seeking indemnification pursuant to this Section 10.03, the Covered Person is not entitled to be
indemnified upon receipt by the Partnership of any undertaking by or on behalf of the Covered Person to repay such amount if it shall be ultimately determined that the Covered Person is not entitled to be indemnified as authorized by this
Section 10.03. 
 (c) The indemnification provided by this Section 10.03 shall be in addition to any other rights to
which a Covered Person may be entitled under any agreement, as a matter of law, in equity or otherwise, both as to actions in the Covered Person’s capacity as a Covered Person and as to actions in any other capacity, and shall continue as to a
Covered Person who has ceased to serve in such capacity and shall inure to the benefit of the heirs, successors, assigns and administrators of the Covered Person. 
 Article 11 
 Conflicts of Interest 

11.01 Transactions with Affiliates. The Partnership and its Subsidiaries shall be permitted to enter into or renew or extend the
term of any agreement or transaction with a Partner or an Affiliate of a Partner on such terms and conditions as the General Partner shall approve in its sole discretion, without the approval of any Limited Partner. 

11.02 Outside Activities. Notwithstanding anything to the contrary in this Agreement or any duty otherwise existing at law or in
equity, (a) the engaging in activities by any Covered Person that are competitive with the business of the Partnership is hereby approved by all Partners, (b) it shall be deemed not to be a breach of any fiduciary duty or any other duty or
obligation of a Partner under this Agreement or otherwise existing under Applicable Law or in equity for such Covered Person to engage in such activities in preference to or to the exclusion of the Partnership, (c) a Covered Person shall have
no obligation under this Agreement or as a result of any duty (including any fiduciary duty) otherwise existing under Applicable Law or in equity, to present business opportunities to the Partnership and (d) the doctrine of corporate
opportunity, or any analogous doctrine, shall not apply to any Covered Person; provided such Covered Person does not engage in such activity as a result of or using confidential or proprietary information provided by or on behalf of the
Partnership to such Covered Person. 
 Article 12 
 Dissolution and Termination 
 12.01 Dissolution. The Partnership
shall be dissolved and its business and affairs wound up upon the earliest to occur of any one of the following events: 
 (a) at
any time there are no limited partners of the Partnership, unless the business of the Partnership is continued in accordance with the Act; 
 (b) the written consent of all the Partners; 
 (c) an “event of
withdrawal” (as defined in the Act) of the General Partner; or 

  
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 (d) the entry of a decree of judicial dissolution of the Partnership pursuant to
Section 17-802 of the Act. 
 The bankruptcy, involuntary liquidation or dissolution of a Partner shall cause that Partner
to cease to be a partner of the Partnership. Notwithstanding the foregoing, the Partnership shall not be dissolved and its business and affairs shall not be wound up upon the occurrence of any event specified in clause (c) above if, at the time
of occurrence of such event, there is at least one remaining general partner who is hereby authorized to, and shall, carry on the business of the Partnership, or if within ninety (90) days after the date on which such event occurs, the
remaining Partners elect in writing to continue the business of the Partnership and to the appointment, effective as of the date of such event, if required, of one or more additional general partners of the Partnership. Except as provided in this
paragraph, and to the fullest extent permitted by the Act, the occurrence of an event that causes a Partner to cease to be a partner of the Partnership shall not, in and of itself, cause the Partnership to be dissolved or its business or affairs to
be wound up, and upon the occurrence of such an event, the business of the Partnership shall, to the extent permitted by the Act, continue without dissolution. 
 12.02 Winding Up of Partnership. Upon dissolution, the Partnership’s business shall be wound up in an orderly manner. The General Partner shall (unless the General Partner (or, if no General
Partner, the remaining Limited Partners) elects to appoint a liquidating trustee) wind up the affairs of the Partnership pursuant to this Agreement. In performing its duties, the General Partner or liquidating trustee is authorized to sell,
distribute, exchange or otherwise dispose of the assets of the Partnership in accordance with the Act and in any reasonable manner that the General Partner or liquidating trustee shall determine to be in the best interest of the Partners or their
successors-in-interest. The General Partner or liquidating trustee shall take full account of the Partnership’s Liabilities and Property and shall cause the Property or the proceeds from the sale thereof, to the extent sufficient therefor, to
be applied and distributed, to the maximum extent permitted by Applicable Law, in the following order: 
 (a) First, to
creditors, including Partners who are creditors, to the extent permitted by law, in satisfaction of all of the Partnership’s Liabilities (whether by payment or the making of reasonable provision for payment thereof to the extent required by
Section 17-804 of the Act), other than Liabilities for distribution to Partners under Section 17-601 or 17-604 of the Act; 
 (b) Second, to the Partners and former Partners of the Partnership in satisfaction of Liabilities for distribution under Sections 17-601 or 17-604 of the Act; and 

(c) The balance, if any, to the Partners in accordance with the positive balance in their Capital Accounts, after giving effect to all
contributions, distributions, and allocations for all periods. 
 12.03 Compliance with Certain Requirements of Regulations;
Deficit Capital Accounts. In the event the Partnership is “liquidated” within the meaning of Regulations Section 1.704-1(b)(2)(ii)(g), distributions shall be made pursuant to this Article 12 to the Partners who have positive
Capital Accounts in compliance with Regulations Section 1.704- 1(b)(2)(ii)(b)(2). If any Partner has a deficit balance in its Capital Account (after giving effect 

  
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to all contributions, distributions, and allocations for all Allocation Years, including the Allocation Year during which such liquidation occurs), such Partner shall have no obligation to make
any contribution to the capital of the Partnership with respect to such deficit, and such deficit shall not be considered a debt owed to the Partnership or to any other Person for any purpose whatsoever. 

12.04 Deemed Distribution and Recontribution. Notwithstanding any other provision of this Article 12, in the event the Partnership
is liquidated within the meaning of Regulations Section 1.704-1(b)(2)(ii)(g) but no actual dissolution and winding up under the Act has occurred, the Property shall not be liquidated, the Partnership’s debts and other Liabilities shall not
be paid or discharged, and the Partnership’s affairs shall not be wound up. Instead, solely for federal income tax purposes, the Partnership shall be deemed to have contributed all its Property and Liabilities to a new limited partnership in
exchange for an interest in such new limited partnership and, immediately thereafter, the Partnership will be deemed to liquidate by distributing interests in the new limited partnership to the Partners. 

12.05 Distribution of Property. In the event the General Partner determines that it is necessary in connection with the winding up
of the Partnership to make a distribution of property in kind, such property shall be transferred and conveyed to the Partners so as to vest in each of them as a tenant in common an undivided interest in the whole of such property, but otherwise in
accordance with Section 12.03. 
 12.06 Termination of Partnership. The Partnership shall terminate when all assets
of the Partnership, after payment of or due provision for all Liabilities of the Partnership, shall have been distributed to the Partners in the manner provided for in this Agreement, and the Certificate shall have been canceled in the manner
provided by the Act. 
 Article 13 
 Miscellaneous 
 13.01 Notices. Any notice, consent or approval to be
given under this Agreement shall be in writing and shall be deemed to have been given if delivered: (a) personally by a reputable courier service that requires a signature upon delivery; (b) by mailing the same via registered or certified
first-class mail, postage prepaid, return receipt requested; or (c) by telecopying or transmitting by electronic mail the same with receipt confirmation to the intended recipient. Any such writing will be deemed to have been given: (i) as
of the date of personal delivery via courier as described above; (ii) as of the third calendar day after depositing the same into the custody of the postal service as evidenced by the date-stamped receipt issued upon deposit of the same into
the mails as described above; and (iii) as of the date and time electronically transmitted in the case of telecopy or electronic mail delivery as described above, in each case addressed to the intended party at the address set forth below:

 To MPLX Operations LLC: 
 MPLX
Operations LLC 
 200 East Hardin Street 

Findlay, OH 45840 

  
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 Attention: President 
 Phone: 419-672-6500 
 E-mail: gpshaffner@marathonpetroleum.com 

To MPL Investment LLC: 
 MPL Investment
LLC 
 539 South Main St. 
 Findlay, OH
45840 
 Attention: President 
 Phone:
419-421-2932 
 E-mail: dctemplin@marathonpetroleum.com 
 Any Partner may designate different addresses or telephone numbers by notice to the other Partners. 
 13.02 Merger and Entire Agreement. This Agreement constitutes the entire Agreement of the Partners and supersedes any prior understandings, agreements, or representations by or among the Partners,
written or oral, to the extent they relate in any way to the subject matter hereof, including the Original Agreement. 

13.03 Assignment. A Partner shall not assign all or any of its rights, obligations or benefits under this Agreement to any other
Person otherwise than (i) in connection with a transfer of its Partnership Interests pursuant to Article 9, or (ii) with the prior written consent of each of the other Partners, which consent may be withheld in such Partner’s sole
discretion, and any attempted assignment not in compliance with Article 9 or this Section 13.03 shall be void. 
 13.04
Parties in Interest. This Agreement shall inure to the benefit of, and be binding upon, the Partners and their respective successors, legal representatives and permitted assigns. 

13.05 Counterparts. This Agreement may be executed in counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument. 
 13.06 Amendment; Waiver. This Agreement may not be amended
except in a written instrument signed by each of the Partners and expressly stating it is an amendment to this Agreement. Any failure or delay on the part of any Partner in exercising any power or right hereunder shall not operate as a waiver
thereof, nor shall any single or partial exercise of any such right or power preclude any other or further exercise thereof or the exercise of any other right or power hereunder or otherwise available under Applicable Law or in equity. 

13.07 Severability. If any term, provision, covenant, or restriction in this Agreement or the application thereof to any Person or
circumstance, at any time or to any extent, is held by a court of competent jurisdiction or other Governmental Authority to be invalid, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions of this Agreement (or
the application of such provision in other jurisdictions or to Persons or circumstances other than those to which it was held invalid or unenforceable) shall in no way be 

  
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affected, impaired or invalidated, and to the extent permitted by Applicable Law, any such term, provision, covenant or restriction shall be restricted in applicability or reformed to the minimum
extent required for such to be enforceable. This provision shall be interpreted and enforced to give effect to the original written intent of the Partners prior to the determination of such invalidity or unenforceability. 

13.08 Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE, WITHOUT
GIVING EFFECT TO THE PRINCIPLES OF CONFLICTS OF LAW THEREOF. ANY RIGHT TO TRIAL BY JURY WITH RESPECT TO ANY CLAIM OR PROCEEDING RELATED TO OR ARISING OUT OF THIS AGREEMENT, OR ANY TRANSACTION OR CONDUCT IN CONNECTION HEREWITH, IS HEREBY WAIVED BY
EACH OF THE PARTNERS. 
 13.09 No Bill for Accounting. To the fullest extent permitted by law, in no event shall any
Partner have any right to file a bill for an accounting or any similar proceeding. 
 13.10 Waiver of Partition. Each
Partner hereby waives any right to partition of the Partnership property. 
 13.11 Section Headings. The section headings
of this Agreement are for reference purposes only and are to be given no effect in the construction or interpretation of this Agreement. 
 13.12 Third Parties. Nothing herein expressed or implied is intended or shall be construed to confer upon or give any Person (other than Covered Persons) other than the Partners and their
respective successors, legal representatives and permitted assigns any rights, remedies or basis for reliance upon, under or by reason of this Agreement. 

  
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 IN WITNESS WHEREOF, the parties have signed this Agreement as of the Effective Date. 

GENERAL PARTNER: 
 MPLX Operations LLC

  

			
		
	By:	 	 
	Name:	 	
	Title:	 	

 LIMITED PARTNER: 
 MPL Investment LLC 
  

			
		
	By:	 	 
	Name:	 	
	Title:	 	

  
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