Document:

EX-10.1

 Exhibit 10.1 
 Execution copy 
 CONTRIBUTION, CONVEYANCE AND ASSUMPTION AGREEMENT

 This Contribution, Conveyance and Assumption Agreement, dated as of October 31, 2012 (this
“Agreement”), is by and among MPLX LP, a Delaware limited partnership (the “Partnership”), MPLX GP LLC, a Delaware limited liability company and the general partner of the Partnership (the
“General Partner”), MPLX Operations LLC, a Delaware limited liability company (the “Operating Company”), MPC Investment LLC, a Delaware limited liability company, MPLX Logistics Holdings LLC, a
Delaware limited liability company, Marathon Pipe Line LLC, a Delaware limited liability company, MPL Investment LLC, a Delaware limited liability company, MPLX Pipe Line Holdings LP, a Delaware limited partnership, and Ohio
River Pipe Line LLC, a Delaware limited liability company (each, a “Party” and collectively, the “Parties”). 
 RECITALS 
 WHEREAS, the General Partner and MPLX Logistics
Holdings LLC have caused the formation of the Partnership, pursuant to the Delaware Revised Uniform Limited Partnership Act (as amended from time to time, the “Delaware Partnership Act”), for the purpose of owning and operating
crude oil, refined product and other hydrocarbon-based product pipelines and other midstream assets and providing related services, as well as engaging in any other business activity that is approved by the General Partner and that lawfully may be
conducted by a limited partnership organized under the Delaware Partnership Act. 
 WHEREAS, in order to accomplish the
objectives and purposes in the preceding recital, each of the following actions has been taken prior to the date hereof: 

1.        MPC Investment LLC formed the General Partner (f/k/a Marathon Petroleum Logistics GP
LLC) under the terms of the Delaware Limited Liability Company Act (as amended from time to time, the “Delaware LLC Act”) and contributed $1,000.00 in exchange for all of the limited liability company interests in such company;

 2.        MPC Investment LLC formed MPLX Logistics Holdings LLC (f/k/a Marathon
Petroleum Logistics Holdings LLC) under the Delaware LLC Act and contributed $2,000.00 in exchange for all of the limited liability company interests in such company; 
 3.        MPLX Logistics Holdings LLC, as the limited partner, and the General Partner, as the general partner, formed the Partnership under the Delaware
Partnership Act and contributed $980.00 and $20.00, respectively, in exchange for a 98% limited partner interest (the “Initial LP Interest”) and a 2% general partner interest, respectively, in the Partnership; 

4.        MPL Investment LLC formed the Operating Company under the Delaware LLC Act and
contributed $1,000.00 in exchange for all of the limited liability company interests in such company; 

 5.        Marathon Pipe Line LLC formed MPL
Louisiana Holdings LLC under the Delaware LLC Act and contributed $1,000.00 in exchange for all of the limited liability company interests in such company; 
 6.        Marathon Pipe Line LLC formed Hardin Street Holdings LLC under the Delaware LLC Act and contributed $1,000.00 in exchange for all of the limited liability
company interests in such company; 
 7.        The Operating Company formed MPLX
Terminal and Storage LLC under the Delaware LLC Act and contributed $250.00 in exchange for all of the limited liability company interests in such company; 
 8.        Marathon Petroleum Company LP formed Marathon Petroleum Logistics Services LLC under the Delaware LLC Act and contributed $1,000.00 in exchange for all of
the limited liability company interests in such company; 
 9.        MPL Investment LLC
and the Operating Company formed MPLX Pipe Line Holdings LP (f/k/a Marathon Petroleum Pipeline Holdings LP) under the Delaware Partnership Act and contributed $500.00 and $500.00, respectively, in exchange for a 50% limited partner interest and a
50% general partner interest, respectively, in such partnership; 
 10.        Effective
July 1, 2012, Marathon Pipe Line LLC contributed to Hardin Street Holdings LLC, its successors and its assigns, a 60% limited liability company interest (representing all of Marathon Pipe Line LLC’s ownership interests), and all of
Marathon Pipe Line LLC’s rights and obligations, in Muskegon Pipeline LLC, a Delaware limited liability company; 

11.        Effective September 1, 2012, Marathon Pipe Line LLC contributed to Hardin Street
Holdings LLC, its successors and its assigns, all of Marathon Pipe Line LLC’s ownership interests, rights and obligations in Capline System, an undivided interest petroleum pipeline, and all of Marathon Pipe Line LLC’s ownership interests,
rights and obligations in Maumee Pipeline Company, an undivided interest petroleum pipeline; 

12.        Effective September 1, 2012, Marathon Pipe Line LLC contributed to Hardin Street
Holdings LLC, its successors and its assigns, a 58.52% limited liability company interest (representing all of Marathon Pipe Line LLC’s ownership interests) in LOCAP LLC, a Delaware limited liability company; 

13.        On September 14, 2012, the Operating Company, as borrower, and the Partnership,
as parent guarantor, entered into a $500 million, five-year, unsecured revolving credit facility with Citibank, N.A., as administrative agent, and several other commercial lending institutions, as lenders and letter of credit issuing banks.

 14.        Pursuant to a purchase and sale agreement and related conveyance
documents, effective September 30, 2012, Marathon Petroleum Company LP sold and transferred a butane cavern located in Neal, West Virginia and related assets to MPLX Terminal and Storage LLC; 

  
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 15.        Effective October 1, 2012, all of
the employees of Marathon Pipe Line LLC were transferred to and became employees of Marathon Petroleum Logistics Services LLC, a Delaware limited liability company; 
 16.        Effective October 10, 2012, Marathon Pipe Line LLC contributed to MPL Louisiana Holdings LLC, its successors and its assigns, a 40.7% limited
liability company interest (representing all of Marathon Pipe Line LLC’s ownership interests), and all of Marathon Pipe Line’s rights and obligations, in LOOP LLC, a Delaware limited liability company; 

WHEREAS, concurrently with the consummation of the transactions contemplated hereby, each of the matters provided for in
Article II will occur in accordance with its respective terms; 
 WHEREAS, if the Over-Allotment Option (as
defined herein) is exercised, each of the matters provided for in Article III will occur in accordance with its respective terms; and 
 WHEREAS, the members or partners of the Parties have taken or caused to be taken all limited liability company and partnership action, as the case may be, required to approve the transactions
contemplated by this Agreement. 
 NOW, THEREFORE, in consideration of the mutual covenants, representations, warranties
and agreements herein contained, the parties hereto agree as follows: 
 ARTICLE I 

DEFINITIONS 
 Capitalized terms used but not otherwise defined herein shall have the respective meanings ascribed to such terms below: 
 “Closing Date” means the date on which the closing of the purchase and sale of Common Units to the Underwriters pursuant to the Underwriting Agreement occurs. 

“Closing Time” means the “time of purchase” as defined in the Underwriting Agreement. 

“Common Unit” means a common unit representing a limited partner interest in the Partnership having the rights set forth
in the Partnership Agreement. 
 “Current Assets” means cash and cash equivalents, receivables (less allowance
for doubtful accounts), receivables from related parties, intercompany accounts receivable, inventory (other than materials and supplies inventories) and other current assets. 
 “Current Liabilities” means accounts payable, payables to related parties, intercompany accounts payable, payroll and benefits payable, accrued taxes and other current liabilities (other
than accrued liability – environmental). 

  
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 “Effective Time” means 12:01 a.m. Eastern Time on the Closing Date.

 “Offering” means the initial public offering of the Partnership’s Common Units pursuant to the
Registration Statement. 
 “Omnibus Agreement” means that certain Omnibus Agreement, dated as of the date of
this Agreement, among Marathon Petroleum Corporation, Marathon Petroleum Company LP, MPL Investment LLC, the General Partner, the Partnership, the Operating Company, MPLX Terminal and Storage LLC, MPLX Pipe Line Holdings LP, Marathon Pipe Line LLC
and Ohio River Pipe Line LLC, as such agreement may be amended, supplemented or restated from time to time. 
 “Option
Units” means the Common Units that the Partnership will agree to issue upon an exercise of the Over-Allotment Option. 

“Original Partnership Agreement” means that certain Agreement of Limited Partnership of the Partnership, dated as of
April 10, 2012. 
 “Over-Allotment Option” has the meaning assigned to it in the Partnership Agreement.

 “Partnership Agreement” means the First Amended and Restated Agreement of Limited Partnership of the
Partnership, dated as of the date of this Agreement. 
 “Registration Statement” means the Registration
Statement on Form S-1 filed with the United States Securities and Exchange Commission (Registration No. 333-182500), as amended. 
 “Subordinated Unit” means a subordinated unit representing a limited partner interest in the Partnership having the rights set forth in the Partnership Agreement. 

“Underwriters” means the underwriting syndicate listed in the Underwriting Agreement. 

“Underwriting Agreement” means a firm commitment underwriting agreement to be entered into between the Partnership and
the underwriters named in the Registration Statement with respect to the Offering. 
 ARTICLE II 

CONTRIBUTIONS, ACKNOWLEDGMENTS AND DISTRIBUTIONS 
 Each of the following transactions set forth in Sections 2.1 through 2.13 shall be completed as of the Effective Time in the order set forth herein: 

2.1        MPLX Terminal and Storage LLC Contribution. MPL Investment LLC shall
contribute to the Operating Company, and the Operating Company shall subsequently contribute to MPLX Terminal and Storage LLC, either an account receivable from MPL Investment LLC or an account payable to MPL Investment LLC, as the case may be, in
an amount necessary to make the amount of the Current Assets of MPLX Terminal and Storage LLC equal to the amount of the Current Liabilities of MPLX Terminal and Storage LLC as of the Effective Time. 

  
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 2.2        Marathon Pipe Line LLC and Ohio
River Pipe Line LLC Contributions. MPL Investment LLC shall contribute to each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC either an account receivable from MPL Investment LLC or an account payable to MPL Investment LLC, as the
case may be, in amounts necessary such that (a) the amount of the Current Assets of Marathon Pipe Line LLC shall be equal to the amount of the Current Liabilities of Marathon Pipe Line LLC and (b) the amount of the Current Assets of Ohio
River Pipe Line LLC shall be equal to the amount of the Current Liabilities of Ohio River Pipe Line LLC, in each case as of the Effective Time. 
 2.3        Execution of the Partnership Agreement. The General Partner and MPLX Logistics Holdings LLC, as the organizational limited partner, shall
amend and restate the Original Partnership Agreement by executing the Partnership Agreement in substantially the form included in Appendix A to the Registration Statement, with such changes as the General Partner and MPLX Logistics Holdings LLC may
agree. 
 2.4        Distribution of the Hardin Street Holdings and the MPL
Louisiana Holdings Interests. Notwithstanding any provision of the limited liability company agreements of Hardin Street Holdings LLC and MPL Louisiana Holdings LLC, each as amended as of the date hereof (the “HSH and MPL Louisiana
LLC Agreements”), Marathon Pipe Line LLC hereby distributes, grants, bargains, conveys, assigns, transfers, sets over and delivers to MPL Investment LLC, its successors and its assigns, for its and their own use forever, all right, title
and interest in and to 100% of the limited liability company interests in each of Hardin Street Holdings LLC and MPL Louisiana Holdings LLC, and MPL Investment LLC hereby accepts such limited liability company interests as a distribution from
Marathon Pipe Line LLC. Notwithstanding any provision of the HSH and MPL Louisiana LLC Agreements, MPL Investment LLC is hereby admitted to each of Hardin Street Holdings LLC and MPL Louisiana Holdings LLC as a member, and hereby agrees that it is
bound by the HSH and MPL Louisiana LLC Agreements as a member of each of Hardin Street Holdings LLC and MPL Louisiana Holdings LLC. Notwithstanding any provision of the HSH and MPL Louisiana LLC Agreements, immediately following the admission of MPL
Investment LLC as a member of each of Hardin Street Holdings LLC and MPL Louisiana Holdings LLC, Marathon Pipe Line LLC shall and does hereby cease to be a member of each of Hardin Street Holdings LLC and MPL Louisiana Holdings LLC and shall
thereupon cease to have or exercise any right or power as a member of Hardin Street Holdings LLC or MPL Louisiana Holdings LLC and Hardin Street Holdings LLC and MPL Louisiana Holdings LLC shall continue without dissolution. 

2.5        Additional Capital Contribution to the Operating Company. MPL Investment
LLC hereby grants, contributes, bargains, conveys, assigns, transfers, sets over and delivers to the Operating Company, its successors and assigns, for its and their own use forever, all right, title and interest in and to a 47.667% limited
liability company interest in each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC, and the Operating Company hereby accepts such limited liability company interests as a capital contribution from MPL Investment LLC. Notwithstanding any
provision of the limited liability company agreements of Marathon 

  
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Pipe Line LLC and Ohio River Pipe Line LLC (each as amended as of the date hereof, the “MPL LLC Agreement” and the “ORPL LLC Agreement,” respectively), the
Operating Company is hereby admitted to Marathon Pipe Line LLC and Ohio River Pipe Line LLC as a member of Marathon Pipe Line LLC and Ohio River Pipe Line LLC, respectively, and hereby agrees that it is bound by the MPL LLC Agreement and the ORPL
LLC Agreement. MPL Investment LLC hereby continues as a member of Marathon Pipe Line LLC and Ohio River Pipe Line LLC, holding 52.333% of the limited liability company interests in each, notwithstanding any provision of the MPL LLC Agreement or the
ORPL LLC Agreement. 
 2.6        Additional Capital Contribution to MPLX Pipe
Line Holdings LP; Partial Redemption of Limited Partner Interest in MPLX Pipe Line Holdings LP. The Operating Company hereby contributes $10.00 to MPLX Pipe Line Holdings LP as a capital contribution in exchange for an additional 1% general
partner interest in MPLX Pipe Line Holdings LP, and MPLX Pipe Line Holdings LP hereby accepts such capital contribution. MPLX Pipe Line Holdings LP hereby distributes $10.00 to MPL Investment LLC in redemption of a 1% limited partner interest in
MPLX Pipe Line Holdings LP, and MPL Investment LLC hereby accepts such distribution and redemption. The Operating Company hereby continues as general partner of MPLX Pipe Line Holdings LP, owning a 51% general partner interest, and MPL Investment
LLC hereby continues as limited partner of MPLX Pipe Line Holdings LP, owning a 49% limited partner interest. 

2.7         Partial Contribution of Marathon Pipe Line LLC and Ohio River Pipe Line LLC
Interests. MPL Investment LLC hereby grants, contributes, bargains, conveys, assigns, transfers, sets over and delivers to MPLX Pipe Line Holdings LP, its successors and assigns, for its and their own use forever, all right, title and
interest in and to a 52.333% limited liability company interest in each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC, and MPLX Pipe Line Holdings LP hereby accepts such limited liability company interests as a capital contribution from MPL
Investment LLC. Notwithstanding any provision of the MPL LLC Agreement and the ORPL LLC Agreement, MPLX Pipe Line Holdings LP is hereby admitted to Marathon Pipe Line LLC and Ohio River Pipe Line LLC as a member of Marathon Pipe Line LLC and Ohio
River Pipe Line LLC, respectively, and hereby agrees that it is bound by the MPL LLC Agreement and the ORPL LLC Agreement. Immediately following the admission of MPLX Pipe Line Holdings LP as a member of each of Marathon Pipe Line LLC and Ohio River
Pipe Line LLC, MPL Investment LLC shall and does hereby cease to be a member of each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC and shall thereupon cease to have or exercise any right or power as a member of Marathon Pipe Line LLC or
Ohio River Pipe Line LLC. The Operating Company hereby continues as a member of each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC, owning a 47.667% limited liability company interest in each, notwithstanding any provision of the MPL LLC
Agreement or the ORPL LLC Agreement. 
 2.8         Additional Partial
Contribution of Marathon Pipe Line LLC and Ohio River Pipe Line LLC Interests. The Operating Company hereby grants, contributes, bargains, conveys, assigns, transfers, sets over and delivers to MPLX Pipe Line Holdings LP, its successors and
its assigns, for its and their own use forever, all right, title and interest in and to a 47.667% limited liability company interest in each of Marathon Pipe Line LLC and Ohio River 

  
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Pipe Line LLC, and MPLX Pipe Line Holdings LP hereby accepts such limited liability company interests as a capital contribution from the Operating Company. Immediately following such contribution
of such limited liability company interests, MPLX Pipe Line Holdings LP shall and does hereby continue as the sole member of each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC, the Operating Company shall and does hereby cease to be a
member of each of Marathon Pipe Line LLC and Ohio River Pipe Line LLC and shall thereupon cease to have or exercise any right or power as a member of Marathon Pipe Line LLC or Ohio River Pipe Line LLC and Marathon Pipe Line LLC and Ohio River Pipe
Line LLC are hereby continued without dissolution. 
 2.9        Distribution of
Operating Company Interests. MPL Investment LLC hereby grants, distributes, bargains, conveys, assigns, transfers, sets over and delivers to MPC Investment LLC, its successors and its assigns, for its and their own use forever, all right,
title and interest in and to all of the limited liability company interests in the Operating Company, and MPC Investment LLC hereby accepts such limited liability company interests as a distribution from MPL Investment LLC and is hereby admitted as
a substitute member of the Operating Company. Immediately following such admission, MPL Investment LLC shall and does hereby cease to be a member of the Operating Company. 
 2.10        Contribution of the OLLC Interest to the General Partner. MPC Investment LLC hereby grants, contributes, bargains, conveys, assigns,
transfers, sets over and delivers to the General Partner, its successors and its assigns, for its and their own use forever, all right, title and interest in and to a portion of its limited liability company interests in the Operating Company with a
value equal to 2% of the equity value of the Partnership immediately after the Closing (the “OLLC Interest”), and the General Partner hereby accepts such OLLC Interest as a capital contribution from MPC Investment LLC.
Notwithstanding any provision of the limited liability company agreement of the Operating Company (the “Operating Company LLC Agreement”), the General Partner is hereby admitted to the Operating Company as a member of the Operating
Company holding the OLLC Interest and hereby agrees that it is bound by the Operating Company LLC Agreement. MPC Investment LLC hereby continues as a member of the Operating Company with respect to the portion of its limited liability company
interest in the Operating Company not transferred to the General Partner. 

2.11        Contribution of Remaining Operating Company Interests to MPLX Logistics
Holdings LLC. MPC Investment LLC hereby grants, contributes, bargains, conveys, assigns, transfers, sets over and delivers to MPLX Logistics Holdings LLC, its successors and its assigns, for its and their own use forever, all right, title
and interest in and to MPC Investment LLC’s remaining limited liability company interests in the Operating Company, and MPLX Logistics Holdings LLC hereby accepts such limited liability company interests as a capital contribution from MPC
Investment LLC. Notwithstanding any provision of the Operating Company LLC Agreement, MPLX Logistics Holdings LLC is hereby admitted to the Operating Company as a member of the Operating Company and hereby agrees that it is bound by the Operating
Company LLC Agreement. Immediately following such contribution of such limited liability company interests, the General Partner shall and does hereby continue as a member of the Operating Company holding the OLLC Interest, MPC Investment LLC shall
and does hereby cease to be a member of the Operating Company and shall thereupon cease to have or exercise any right or power as a member of the Operating Company, and the Operating Company is hereby continued without dissolution. 

  
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 2.12        Contribution of the OLLC Interest
to the Partnership. The General Partner hereby grants, contributes, bargains, conveys, assigns, transfers, sets over and delivers to the Partnership, its successors and its assigns, for its and their own use forever, all right, title and
interest in and to the OLLC Interest in exchange for (a) a continuation of the General Partner’s 2% general partner interest in the Partnership and (b) the issuance to the General Partner of all of the limited partner interests in the
Partnership classified as “Incentive Distribution Rights” under the Partnership Agreement, and the Partnership hereby accepts such OLLC Interest. Notwithstanding any provision of the Operating Company LLC Agreement, the Partnership is
hereby admitted to the Operating Company as a member of the Operating Company and hereby agrees that it is bound by the Operating Company LLC Agreement. Immediately following such contribution of such OLLC Interest, MPLX Logistics Holdings LLC shall
and does hereby continue as a member of the Operating Company, the General Partner shall and does hereby cease to be a member of the Operating Company and shall thereupon cease to have or exercise any right or power as a member of the Operating
Company, and the Operating Company is hereby continued without dissolution. 

2.13        Additional Contribution of Operating Company Interests. MPLX Logistics
Holdings LLC hereby grants, contributes, bargains, conveys, assigns, transfers, sets over and delivers to the Partnership, its successors and its assigns, for its and their own use forever, all right, title and interest in and to all of MPLX
Logistics Holdings LLC’s limited liability company interests in the Operating Company in exchange for (a) 19,651,515 Common Units representing a 26.1% limited partner interest in the Partnership, (b) 36,951,515 Subordinated Units
representing a 49% limited partner interest in the Partnership and (c) the right to receive $149,144,119.22 in proceeds from the Offering to reimburse MPLX Logistics Holdings LLC for certain capital expenditures incurred by MPLX Logistics
Holdings LLC with respect to the assets owned by MPLX Terminal and Storage LLC, Marathon Pipe Line LLC and Ohio River Pipe Line LLC, and the Partnership hereby accepts such limited liability company interests. Immediately following such contribution
of such limited liability company interests, the Partnership shall and does continue as the sole member of the Operating Company, MPLX Logistics Holdings LLC shall and does hereby cease to be a member of the Operating Company and shall thereupon
cease to have or exercise any right or power as a member of the Operating Company, and the Operating Company is continued without dissolution. 
 Each of the following transactions set forth in Sections 2.14 through 2.17 shall be completed as of the Closing Time, and in any event only after completion of the transactions set forth in
Sections 2.1 through 2.13, in the order set forth herein: 

2.14        Public Cash Contribution. The Parties acknowledge that, in connection
with the Offering, the public, through the Underwriters, has made a capital contribution to the Partnership of $380,600,000.00 in cash in exchange for 17,300,000 Common Units (the “Firm Units”) representing a 22.9% limited partner
interest in the Partnership and new limited partners are being admitted to the Partnership in connection therewith. 

  
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 2.15        Payment of Transaction Expenses
and Contribution of Proceeds by the Partnership. The Parties acknowledge (a) the payment by the Partnership, in connection with the Closing, of transaction expenses in the amount of approximately $4.9 million, excluding underwriting
discounts of $22,836,000.00 in the aggregate but including a structuring fee of 0.375% of the gross proceeds of the Offering payable to certain of the Underwriters (the “Structuring Fee”), (b) the distribution and payment of
$149,144,119.22 to MPLX Logistics Holdings LLC as a reimbursement of qualified capital expenditures, and (c) the contribution by the Partnership of $201,600,000.00 to the Operating Company, of which $10,000,000.00 is to be used by the Operating
Company for working capital purposes. 
 2.16        Capital Contribution to MPLX
Pipe Line Holdings LP. The Operating Company hereby makes a capital contribution of $191,600,000.00 to MPLX Pipe Line Holdings LP to fund future capital projects, and MPLX Pipe Line Holdings LP hereby accepts such capital contribution from
the Operating Company. Following this capital contribution, the Operating Company will hold a 51% general partner interest in MPLX Pipe Line Holdings LP and MPL Investment LLC will hold a 49% limited partner interest in MPLX Pipe Line Holdings LP.

 2.17        Redemption of the Initial LP Interest from the Partnership and
Return of Initial Capital Contribution. The Partnership hereby redeems the Initial LP Interest held by MPLX Logistics Holdings LLC and hereby refunds and distributes to MPLX Logistics Holdings LLC the initial contribution, in the amount of
$980.00, made by MPLX Logistics Holdings LLC in connection with the formation of the Partnership, along with any interest or other profit that resulted from the investment or other use of such initial contribution. 

ARTICLE III 

EXERCISE OF OVER-ALLOTMENT OPTION 
 If the Over-Allotment Option is exercised in whole or in part, the Underwriters will contribute additional cash to the Partnership in exchange for Option Units at the Offering price per Common Unit set
forth in the Registration Statement, net of underwriting discounts and the Structuring Fee. The Partnership hereby agrees to redeem a number of Common Units from MPLX Logistics Holdings LLC equal to the number of Option Units sold by the Partnership
pursuant to the exercise of the Over-Allotment Option on the basis of the Offering price per Common Unit set forth in the Registration Statement, net of underwriting discounts and the Structuring Fee. 

ARTICLE IV 

FURTHER ASSURANCES 
 From time to time after the Effective Time, and without any further consideration, the Parties agree to execute, acknowledge and deliver all such additional deeds, assignments, bills of sale, conveyances,
instruments, notices, releases, acquittances and other documents, and to do all such other acts and things, all in accordance with applicable law, as may be necessary or appropriate (a) more fully to assure that the applicable Parties own all
of the properties, rights, titles, interests, estates, remedies, powers and privileges granted by this Agreement, or which are intended to be so granted, (b) more fully and effectively to vest in the applicable Parties and their

  
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respective successors and assigns beneficial and record title to the interests contributed and assigned by this Agreement or intended to be so and (c) more fully and effectively to carry out
the purposes and intent of this Agreement. 
 ARTICLE V 

ORDER OF COMPLETION AND EFFECTIVENESS OF TRANSACTIONS 
 5.1        Order of Completion of Transactions. The transactions provided for in Sections 2.1 through 2.13 shall be completed as of the
Effective Time in the order set forth in Article II. The transactions provided for in Sections 2.14 through 2.17 shall be completed as of the Closing Time in the order set forth in Article II. Following the completion of
the transactions set forth in Article II, the transactions provided for in Article III, if they occur, shall be completed. 
 5.2        Effectiveness of Transactions. Notwithstanding anything contained in this Agreement to the contrary, (a) none of Sections 2.1
through 2.13 shall be operative or have any effect until the Effective Time and (b) none of the provisions of Sections 2.14 through 2.17 or Article III shall be operative or have any effect until the Closing
Time, at which respective time all such applicable provisions shall be effective and operative in accordance with Section 5.1 without further action by any Party. 
 ARTICLE VI 
 MISCELLANEOUS 

6.1        Costs. Except for the transaction expenses set forth in
Section 2.15, the Operating Company shall pay all expenses, fees and costs, including, but not limited to, all sales, use and similar taxes arising out of the contributions, distributions, conveyances and deliveries to be made under
Article II and shall pay all documentary, filing, recording, transfer, deed and conveyance taxes and fees required in connection therewith. In addition, the Operating Company shall be responsible for all costs, liabilities and expenses
(including court costs and reasonable attorneys’ fees) incurred in connection with the implementation of any conveyance or delivery pursuant to Article IV (to the extent related to any of the contributions, distributions, conveyances and
deliveries to be made under Article II). 
 6.2        Headings;
References; Interpretation. All Article and Section headings in this Agreement are for convenience only and shall not be deemed to control or affect the meaning or construction of any of the provisions hereof. 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. All references herein to Articles and Sections
shall, unless the context requires a different construction, be deemed to be references to the Articles and Sections of this Agreement. All personal pronouns used in this Agreement, whether used in the masculine, feminine or neuter gender, shall
include all other genders, and the singular shall include the plural and vice versa. The use herein of the word “including” following any general statement, term or matter shall not be construed to limit such statement, term or matter to
the specific items or matters set forth immediately following such word or to 

  
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similar items or matters, whether or not non-limiting language (such as “without limitation,” “but not limited to” or other words of similar import) is used with reference
thereto, but rather shall be deemed to refer to all other items or matters that could reasonably fall within the broadest possible scope of such general statement, term or matter. 

6.3        Successors and Assigns. This Agreement shall be binding upon and inure
to the benefit of the Parties and their respective successors and assigns. 

6.4        No Third Party Rights. The provisions of this Agreement are intended to
bind the Parties as to each other and are not intended to and do not create rights in any other person or confer upon any other person any benefits, rights or remedies, and no person is or is intended to be a third party beneficiary of any of the
provisions of this Agreement. 
 6.5        Counterparts. This Agreement
may be executed in any number of counterparts with the same effect as if all Parties had signed the same document. All counterparts shall be construed together and shall constitute one and the same instrument. 

6.6        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. EACH OF THE PARTIES
HERETO AGREES THAT THIS AGREEMENT INVOLVES AT LEAST U.S. $100,000.00 AND THAT THIS AGREEMENT HAS BEEN ENTERED INTO IN EXPRESS RELIANCE UPON 6 Del. C. § 2708. EACH OF THE PARTIES HERETO IRREVOCABLY AND UNCONDITIONALLY AGREES (i) TO BE
SUBJECT TO THE JURISDICTION OF THE COURTS OF THE STATE OF DELAWARE AND OF THE FEDERAL COURTS SITTING IN THE STATE OF DELAWARE, AND (ii) TO THE EXTENT SUCH PARTY IS NOT OTHERWISE SUBJECT TO SERVICE OF PROCESS IN THE STATE OF DELAWARE, TO APPOINT
AND MAINTAIN AN AGENT IN THE STATE OF DELAWARE AS SUCH PARTY’S AGENT FOR ACCEPTANCE OF LEGAL PROCESS AND TO NOTIFY THE OTHER PARTY OF THE NAME AND ADDRESS OF SUCH AGENT. 
 (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 to such dispute or claim, any Party to such dispute or claim may initiate mandatory, non-binding mediation hereunder by giving a notice of mediation (a “Mediation Notice”) to the other Parties to such
dispute or claim. In connection with any mediation pursuant to this Section 6.6, the mediator shall be jointly appointed by the Parties to the dispute or claim and the mediation shall be conducted in Findlay, Ohio unless otherwise agreed
by the Parties to the dispute or claim. All costs and expenses of the mediator appointed pursuant to this section shall be shared equally by the Parties to the dispute or claim. 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 to the dispute or claim, shall govern any mediation pursuant to this section. In the mediation, each Party to the dispute or claim
shall be represented by one or more senior representatives who shall have authority to resolve any disputes. If a dispute or claim has not been resolved within 30 days after the receipt of the Mediation Notice by a Party, then any Party to the
dispute or claim may refer the resolution of the dispute or claim to litigation. 

  
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 (c)        Subject to Section 6.6(b),
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, to the fullest extent permitted by law, 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 6.9. 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. 

6.7        Severability. If any of the provisions of this Agreement are held by any
court of competent jurisdiction to contravene, or to be invalid under, the laws of any political body having jurisdiction over the subject matter hereof, such contravention or invalidity shall not invalidate the entire Agreement. Instead, this
Agreement shall be construed as if it did not contain the particular provision or provisions held to be invalid and an equitable adjustment shall be made and necessary provision added so as to give effect to the intention of the Parties as expressed
in this Agreement at the time of execution of this Agreement. 

6.8        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 as an amendment to this Agreement. Notwithstanding anything in the foregoing to the contrary,
any amendment executed by the Partnership or any of its subsidiaries shall not be effective unless and until the execution of such amendment has been approved by the conflicts committee of the General Partner’s board of directors. 

6.9        Notices. All notices, requests and other communications required or
permitted hereunder shall be in writing and shall be deemed duly given or delivered (i) when delivered personally, (ii) if transmitted by facsimile when confirmation of transmission is received or by email when receipt of such email is
acknowledged by return email, (iii) if sent by registered or certified mail, postage prepaid, return receipt requested, on the third business day after mailing or (iv) if sent by private courier when received; and shall be addressed as
follows: 
  

	if to:	MPLX LP 

	 	c/o MPLX GP LLC, its general partner 

	 	200 East Hardin St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: glpeiffer@marathonpetroleum.com 

  
 Page 12 of 15

	if to:	MPLX GP LLC 

	 	200 East Hardin St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: glpeiffer@marathonpetroleum.com 

  

	if to:	MPLX Operations LLC 

	 	200 East Hardin St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: glpeiffer@marathonpetroleum.com 

  

	if to:	MPLX Logistics Holdings LLC 

	 	539 South Main St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: dctemplin@marathonpetroleum.com 

  

	if to:	MPC Investment LLC 

	 	539 South Main St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: grheminger@marathonpetroleum.com 

  

	if to:	MPL Investment LLC 

	 	539 South Main St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: dctemplin@marathonpetroleum.com 

  

	if to:	Marathon Pipe Line LLC 

	 	539 South Main St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: copierson@marathonpetroleum.com 

  

	if to:	MPLX Pipe Line Holdings LP 

	 	c/o MPLX Operations LLC, its general partner 

	 	200 East Hardin St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: glpeiffer@marathonpetroleum.com 

  
 Page 13 of 15

	if to:	Ohio River Pipe Line LLC 

	 	539 South Main St. 

	 	Findlay, OH 45840 

	 	Attention: President 

	 	Email address: copierson@marathonpetroleum.com 

or to such other address as such Party may indicate by a notice delivered in accordance with this Section 6.9. 

6.10        Integration. This Agreement and the instruments referenced herein
supersede all previous understandings or agreements among the parties, whether oral or written, with respect to the subject matter of this Agreement and such instruments. This Agreement and such instruments contain the entire understanding of the
Parties with respect to the subject matter hereof and thereof. There are no unwritten oral agreements between the parties. No understanding, representation, promise or agreement, whether oral or written, is intended to be or shall be included in or
from part of this Agreement unless it is contained in a written amendment hereto executed by the parties hereto after the date of this Agreement. 
 6.11        Deed; Bill of Sale; Assignment. To the extent required and permitted by applicable law, this Agreement shall also constitute a
“deed,” “bill of sale” or “assignment” of the assets and interests referenced herein. 

[Remainder of page intentionally left blank] 

  
 Page 14 of 15

 IN WITNESS WHEREOF, the Parties to this Agreement have caused it to be duly executed as of
the date first above written. 
  

									
	MPLX LP	 		 	MPLX GP LLC
	By:	 	MPLX GP LLC	 		 		 	
	Its:	 	General Partner	 		 		 	
		 		 		 	By:	 	 /s/ G. L. Peiffer

		 		 		 		 	G. L. Peiffer, President
	By:	 	 /s/ G. L. Peiffer
	 		 		 	
		 	G. L. Peiffer, President	 		 		 	
			
	MPLX Operations LLC	 		 	MPLX Logistics Holdings LLC
					
	By:	 	 /s/ G. P. Shaffner
	 		 	By:	 	 /s/ D. C. Templin

		 	G. P. Shaffner, V. President	 		 		 	D. C. Templin, President
			
	MPC Investment LLC	 		 	MPL Investment LLC
					
	By:	 	 /s/ G. R. Heminger
	 		 	By:	 	 /s/ D. C. Templin

		 	G. R. Heminger, President	 		 		 	D. C. Templin, President
			
	Marathon Pipe Line LLC	 		 	MPLX Pipe Line Holdings LP
		 		 		 	By:	 	MPLX Operations LLC
	By:	 	 /s/ C. O. Pierson
	 		 	Its:	 	General Partner
		 	C. O. Pierson, President	 		 		 	
					
		 		 		 	By:	 	 /s/ G. P. Shaffner

		 		 		 		 	G. P. Shaffner, V. President
				
	Ohio River Pipe Line LLC	 		 		 	
					
	By:	 	 /s/ C. O. Pierson
	 		 		 	
		 	C. O. Pierson, President	 		 		 	

 Signature page, Contribution AgreementEX-10.2

 Exhibit 10.2 
 Execution copy 
 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”), Marathon Petroleum Company LP, a Delaware limited 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”), MPLX Operations LLC, a Delaware limited liability company (the “Operating Company”), MPLX Terminal and
Storage LLC, a Delaware limited liability company (“MTS”), MPLX Pipe Line Holdings LP, a Delaware limited partnership (“Holdings”), Marathon Pipe Line LLC, a Delaware limited liability company
(“MPL”), and Ohio River Pipe Line LLC, a Delaware limited liability company (“ORPL”). 

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 October 31, 2012. 

“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, the Operating Company, MPLX Logistics Holdings LLC, MPL, ORPL, MPC Investment
LLC, MPL Investment LLC and Holdings, together with the additional conveyance documents and instruments contemplated or referenced thereunder, as such may be amended, supplemented or restated from time to time. 

“Covered Environmental Losses” is defined in Section 2.1. 

“Employee Services Agreements” means, collectively, (a) that certain Employee Services Agreement, dated as of
September 30, 2012, by and among the General Partner, Catlettsburg Refining LLC, a Delaware limited liability company, and MTS, and (b) that certain Employee Services Agreement, dated as of October 1, 2012, by and among the General
Partner, Marathon Petroleum Logistics Services LLC, a Delaware limited liability company, and MPL. 
 “Environmental
Deductible” is defined in Section 2.6. 
 “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 

  
 2 

 
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. 

  
 3 

 “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.

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

“MPC Entities” means MPC and each of its Affiliates, 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,
directly or indirectly, the general partner of the Partnership. For purposes of this definition, “control” means the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of
the general partner of the Partnership, whether through ownership of voting securities, by contract, or otherwise. 

“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. 

  
 4 

 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. 

(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 and schedule 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 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 each Group Member from and against any Losses
suffered or incurred by such Group Member, directly or indirectly, by reason of or arising out of: 

(i)        any violation of Environmental Laws as 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, 

  
 5 

 
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 as in effect prior to the Closing Date; and 

(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 as 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 such Group Member 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 as in effect prior to the Closing Date and (y) MPCLP 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 shall indemnify, defend and hold harmless MPC from and
against any Losses suffered or incurred by any of the MPC Entities, directly or indirectly, by reason of or arising out of: 
 (i)        any violation of Environmental Laws as 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 as 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). 

  
 6 

 (c)        Holdings shall indemnify, defend and
hold harmless MPC from and against any Losses suffered or incurred by any of the MPC Entities, directly or indirectly, by reason of or arising out of: 
 (i)        any violation of Environmental Laws as 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 
 (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 as 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 each Group Member from and against any Losses suffered or incurred by such Group Member
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 each Group
Member from and against any Losses suffered or incurred by such Group Member by reason of or arising out of (a) the failure of such 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 such Group Member on the Closing Date is located as of the Closing Date, and such failure renders such Group Member 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 as of immediately prior to the Closing Date; (b) the failure of such 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 as of 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. 

  
 7 

 2.4        Additional Indemnification.

 (a) Each of MPL Investment LLC and MPCLP, jointly and severally, shall indemnify, defend, and hold harmless each Group
Member from and against any Losses suffered or incurred by such Group Member by reason of or arising out of: 

(i)        (A) the consummation of the transactions contemplated by the
Contribution Agreement or (B) events and conditions 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 each Group Member 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 any Group Member to have on the Closing Date any consent, license, permit or approval necessary to allow such Group Member 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 shall indemnify, defend, and
hold harmless MPC from and against any Losses suffered or incurred by any of 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 is indemnifying MPC 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 MPC from and against any Losses
suffered or incurred by any of 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 MPC under Section 2.1(c)), unless such indemnification would not be permitted by any Group Member under the
Partnership Agreement. 

  
 8 

 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 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 or
counterclaim, but the Indemnifying Party shall have the right to retain sole control over such defense and counterclaims so long as the Indemnified Party is still seeking indemnification hereunder. 

(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. 

  
 9 

 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 any Group Member 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 any Group Member attributable to those locations identified on Schedule B. 
 (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, DIRECTLY OR INDIRECTLY, 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 and its Affiliates’ 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 

  
 10 

 
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”). The Parties acknowledge and agree that it is the intent of the Parties that the General and Administrative Services be provided based on an arm’s-length standard, and that the
Administrative Fee is intended to reflect such standard. For the avoidance of doubt, the Parties further 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: 
 (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 or the General
Partner’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

  
 11 

 
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: 

(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 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 MPC 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-

  
 12 

 
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 of MPC Marks. 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 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 and MPCLP. 

4.3        Grant of MPLX 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 General Partner for the benefit of the Partnership listed on Schedule D (collectively, the “MPLX
Marks”). 
 4.4        Ownership and Quality of MPLX Marks. MPC agrees,
on behalf of itself and the other 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 other 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 other 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 other 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 other MPC Entities shall inure to the benefit of the General Partner and the
Partnership. MPC agrees, and agrees to cause the other 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. 

  
 13 

 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 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 or except as required by applicable law. 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, to the extent
permitted by applicable law, the provisions of this Section 6.1 shall survive the termination of this Agreement. 

  
 14 

 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. EACH OF THE PARTIES HERETO AGREES THAT THIS AGREEMENT INVOLVES AT
LEAST U.S. $100,000.00 AND THAT THIS AGREEMENT HAS BEEN ENTERED INTO IN EXPRESS RELIANCE UPON 6 Del. C. § 2708. EACH OF THE PARTIES HERETO IRREVOCABLY AND UNCONDITIONALLY AGREES (i) TO BE SUBJECT TO THE JURISDICTION OF THE COURTS OF THE
STATE OF DELAWARE AND OF THE FEDERAL COURTS SITTING IN THE STATE OF DELAWARE, AND (ii) TO THE EXTENT SUCH PARTY IS NOT OTHERWISE SUBJECT TO SERVICE OF PROCESS IN THE STATE OF DELAWARE, TO APPOINT AND MAINTAIN AN AGENT IN THE STATE OF DELAWARE
AS SUCH PARTY’S AGENT FOR ACCEPTANCE OF LEGAL PROCESS AND TO NOTIFY THE OTHER PARTY OF THE NAME AND ADDRESS OF SUCH AGENT. 
 (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 to the dispute or claim. In connection with any mediation
pursuant to this Section 6.2, the mediator shall be jointly appointed by the Parties to the dispute or claim and the mediation shall be conducted in Findlay, Ohio unless otherwise agreed by the Parties to the dispute or claim. All costs
and expenses of the mediator appointed pursuant to this section shall be shared equally by the Parties to the dispute or claim. 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 to the dispute or claim, shall govern any mediation pursuant to this section. In the mediation, each Party to the dispute or claim shall be represented by one or more senior
representatives who shall have authority to resolve any disputes. If a dispute or claim has not been resolved within 30 days after the receipt of the Mediation Notice by a Party, then any Party to the dispute or claim may refer the resolution of the
dispute or claim to litigation. 
 (c)        Subject to Section 6.2(b),
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, to the fullest extent permitted by law, 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. 

  
 15 

 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 MPC: 
 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 

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, to the fullest extent permitted by law, 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. 

  
 16 

 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 or other interest holder 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.] 

  
 17 

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

									
	Marathon Petroleum Corporation	 		 	Marathon Petroleum Company LP
		 		 		 	By:	 	MPC Investment LLC, its general partner
	By:	 	 /s/ G. R. Heminger
	 		 		 	
		 	 G. R. Heminger, President and
Chief Executive Officer
	 		 	By:	 	 /s/ G. R. Heminger

		 	 		 		 	G. R. Heminger, President
			
	MPL Investment LLC	 		 	MPLX LP
		 		 		 	By:	 	MPLX GP LLC, its general partner
					
	By:	 	 /s/ D. C. Templin
	 		 	By:	 	 /s/ G. L. Peiffer

		 	D. C. Templin, President	 		 		 	G. L. Peiffer, President
			
	MPLX GP LLC	 		 	MPLX Operations LLC
					
	By:	 	 /s/ G. L. Peiffer
	 		 	By:	 	 /s/ G. P. Shaffner

		 	G. L. Peiffer, President	 		 		 	G. P. Shaffner, V. President
			
	Marathon Pipe Line LLC 	 		 	Ohio River Pipe Line LLC
					
	By:	 	 /s/ C. O. Pierson
	 		 	By:	 	 /s/ C. O. Pierson

		 	C. O. Pierson, President	 		 		 	C. O. Pierson, President
			
	MPLX Pipe Line Holdings LP	 		 	MPLX Terminal and Storage LLC
	By:	 	MPLX Operations LLC,	 		 		 	
		 	its general partner	 		 		 	
					
	By:	 	 /s/ G. P. Shaffner
	 		 	By:	 	 /s/ B. R. McKain

		 	G. P. Shaffner, V. President	 		 		 	B. R. McKain, President

 [Signature page to Omnibus Agreement] 

 Schedule A 
 Pre-Closing Litigation 
  

													
	Matter Name	 	Matter Type	 	Party	 	Matter Description	 	Case/Docket #	 	Court/Agency	 	State
	Abert, Jennifer et al v Alberta Energy Company, Ltd, et
al	 	Litigation	 	Marathon Pipe
Line LLC	 	Personal injury	 	04L354	 	3rd Judicial
Cir. Ct	 	IL
	Bolin Enterprises, Inc.	 	Claim	 	Marathon Pipe
Line LLC	 	Contract dispute	 	 	 	 	 	IN
	Cherokee Clearing Inc.—Breach of Contract	 	Claim	 	Marathon Pipe
Line LLC	 	Breach of contract	 	 	 	 	 	OH
	First Federal v Troyer, et al (incl Ohio River Pipe
Line)	 	Litigation	 	Marathon Pipe
Line LLC	 	Foreclosure on property with easement.	 	10CV061	 	Holmes Cty
Common
Pleas	 	OH
	Garza, Maria, et al v MOC, et al	 	Litigation	 	Marathon Pipe
Line LLC	 	Wrongful death; personal injuries	 	200960440	 	District Court	 	TX
	Hurd, Tamara, et al v MPL and Willbros Engineers,
et al	 	Litigation	 	Marathon Pipe
Line LLC	 	Personal injury	 	10 006449 NO and
11 011761 NO	 	3rd Judicial
Cir Ct	 	MI
	Johnny Ray Burton, Petitioner vs. Afton Pumps,
inc., et al., including Marathon Pipe Line LLC	 	Litigation	 	Marathon Pipe
Line LLC	 	Toxic tort, asbestos	 	201203839	 	Orleans Civil
Dist Ct	 	LA
	Mauritz, Daniel G. v. Marathon Pipe Line LLC	 	Litigation	 	Marathon Pipe
Line LLC	 	Breach of easement	 	12-CV-0326	 	Richland Cty
Common
Pleas	 	OH
	MPL v Baker, Todd L And Susan R.	 	Litigation	 	Marathon Pipe
Line LLC	 	Injunction against construction over a pipeline	 	87D01 0906 PL 249	 	Supreme
Court	 	IN
	MPL v. Community Trust Bank, Inc.	 	Litigation	 	Marathon Pipe
Line LLC	 	Condemnation	 	11-CI-00666	 	Circuit Court	 	KY
	MPL v. Mitchell Crooks	 	Litigation	 	Marathon Pipe
Line LLC	 	Injunction to gain access to property	 	10-CI-90183	 	Bath Cir Ct	 	KY
	People St of IL, et al vs Premcor Refining Grp, Inc, et
al	 	Litigation	 	Marathon Pipe
Line LLC	 	Contribution for environmental cleanup costs.	 	03-CH-459	 	3rd Judicial
Cir. Ct	 	IL
	Peter Grootendorst—Right of Way	 	Claim	 	Marathon Pipe
Line LLC	 	Right of way dispute	 	 	 	 	 	MI
	PHMSA-NOPV Proposed Penalty Proposed Compliance Ord
8/24/10	 	Regulatory/
Administrative	 	Marathon Pipe
Line LLC	 	Notice of Probable Violation and proposed civil penalty	 	CPF 4-2010-5013	 	US Dept of
Transportation	 	TX
	Schoonover, Kira N v MPL	 	Litigation	 	Marathon Pipe
Line LLC	 	Personal injury	 	26974	 	5th Judicial
Dist Ct	 	WY
	Southwind Golf Course	 	Claim	 	Marathon Pipe
Line LLC	 	Property damage and loss of business	 	 	 	 	 	KY
	Tolling Agreement—Speer	 	Claim	 	Marathon Pipe
Line LLC	 	Property damage	 	 	 	 	 	MI
	Village of Hartford vs Premcor Refining Group,
et al	 	Litigation	 	Marathon Pipe
Line LLC	 	Environmental contamination	 	08-L-637	 	3rd Judicial
Cir. Ct	 	IL
	Woodland Investments v MBD & Assocs, and
MPL	 	Litigation	 	Marathon Pipe
Line LLC	 	Easement Dispute	 	87DO1-1011-PL-584	 	Warrick
Superior Ct	 	IN

 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 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	  	$	3,475,000	  

 Schedule D 
 Trademarks, Tradenames & Patents 
  

															
	Depiction	 	Mark	 	Goods/Services	 	Status            	 	 Application    

Number
	 	 Registration    

Number
	 	 Registration    

Date
	 	Applicant
	 Word Mark
	 	AN AMERICAN COMPANY SERVING AMERICA	 	TRUCK TRANSPORTATION SERVICES (IC 39)	 	Registered	 	75090021	 	2059119	 	5/6/1997	 	Marathon Petroleum Company LP
	

	 	M MARATHON & Design	 	STORAGE, TRANSPORTATION, DELIVERY, AND DISTRIBUTION OF OIL, GAS AND GASES VIA PIPELINE, TRUCK, TRAIN AND MARINE VESSELS (IC
39)	 	Registered	 	85425826	 	4167004	 	7/3/2012	 	Marathon Petroleum Company LP
	 

	 	MARATHON	 	STORAGE, TRANSPORTATION, DELIVERY AND DISTRIBUTION OF OIL, GAS AND GASES VIA PIPELINE, TRUCK, TRAIN AND MARINE VESSELS (IC 39)	 	Registered	 	85425783	 	4167002	 	7/3/2012	 	Marathon Petroleum Company LP
	

	 	MPLX Logo & Design	 	Storage, transportation, delivery, shipping and distribution of oil, refined oil products and other
hydrocarbon-based products via pipeline, truck, train and marine vessel; Processing of oil, refined oil products and other hydrocarbon-based products	 	Pending	 	85635730	 	N/A	 	N/A	 	MPLX GP LLC
	 

	 	MPLX Logo & Design	 	Storage, transportation, delivery, shipping and distribution of oil, refined oil products and other hydrocarbon-based products via pipeline, truck, train and marine vessel;
Processing of oil, refined oil products and other hydrocarbon-based products	 	Pending	 	85638040	 	N/A	 	N/A	 	MPLX GP LLC
	
MPLX
	 	MPLX in block letter	 	Storage, transportation, delivery, shipping and distribution of oil, refined oil products and other
hydrocarbon-based products via pipeline, truck, train and marine vessel; Processing of oil, refined oil products and other hydrocarbon-based products	 	Pending	 	85635348	 	N/A	 	N/A	 	MPLX GP LLC
	 MPLX ENERGYLOGISTICS
	 	 MPLX Energy Logistics
 in block letter
	 	Storage, transportation, delivery, shipping and distribution of oil, refined oil products and other hydrocarbon-based products via pipeline, truck, train and marine vessel;
Processing of oil, refined oil products and other hydrocarbon-based products	 	Pending	 	85742385	 	N/A	 	N/A	 	MPLX GP LLC
	 

	 	MPLX Energy Logistics Logo & Design	 	Storage, transportation, delivery, shipping and distribution of oil, refined oil products and other
hydrocarbon-based products via pipeline, truck, train and marine vessel; Processing of oil, refined oil products and other hydrocarbon-based products	 	Pending	 	85742497	 	N/A	 	N/A	 	MPLX GP LLC

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