Fourth Amendment to Third Amended and Restated Terminal Services Agreement, dated March 1, 2017, between MPLX Terminals LLC and Marathon Petroleum Company LP

Renewable Blending. MPC may direct Terminal Owner to blend ethanol, biodiesel, biomass-based diesel or renewable diesel with any Products as a part of the Services hereunder. Subject to Section 3.6(c), Terminal Owner shall provide or cause to be provided at each applicable Terminal blending services utilizing equipment including tanks, pumps, piping, and other equipment (the “Blending Equipment”) necessary to blend ethanol, biodiesel, biomass-based diesel and renewable diesel into Products. MPC shall be responsible for providing all of the ethanol, biodiesel, biomass-based diesel and renewable diesel that it desires to be blended with Products at a Terminal. Terminal Owner shall blend ethanol, biodiesel, biomass-based diesel and renewable diesel into the Products as directed by MPC. Terminal Owner shall provide a PTD with information about the blending of ethanol, biodiesel, biomass-based diesel or renewable diesel as directed by MPC, in addition to language required by applicable Laws. Terminal Owner shall also provide services with respect to in-tank denaturing of ethanol as a part of the Services hereunder. Except for fees related to ethanol denaturing services and Ethanol Excess Volume Value Capture, which are separately set forth in Schedule 5.1, Fees for blending-related Services performed at each Terminal are included in the per Gallon throughput fees set forth in Schedule 5.1.”

Commitment. During each Calendar Quarter, MPC will tender the respective volumes of Products identified by Calendar Quarter for each Terminal in Schedule 3.1 (each a “Minimum Quarterly Terminal Volume Commitment”) for redelivery (including transshipments but excluding Transmix and EV) at each Terminal.”

Commencing with the fifth anniversary of the Effective Date and continuing every five years under the Term thereafter (each such date, an “Adjustment Opportunity Date”), Terminal Owner shall provide a statement to MPC, along with reasonable supporting documentation, showing (A) the Terminals or Terminal Complexes for which a Terminal Deficiency Payment was made during the previous five year period; (B) the average actual volumes of Products tendered for redelivery (including transshipments but excluding Transmix and EV) at each such Terminal or Terminal Complex, as applicable, on a Calendar Quarter basis; and (C) a calculation showing the percentage decrease of the volumes calculated in Section 4.3(d)(i)(B) (“x”) versus the Minimum Quarterly Terminal Volume Commitments or Aggregate Committed Complex Volume, as applicable (“y”), such calculation being expressed mathematically as (x-y)/y.

Base Throughput Fee. The base throughput fee for each corresponding Terminal set forth on Schedule 5.1 (each a “Base Throughput Fee”) shall apply to volumes of MPC’s Products (excluding Transmix and EV) redelivered hereunder up to the Minimum Quarterly Terminal Volume Commitment. The Base Throughput Fee shall be charged on a per Gallon basis measured at the redelivery point and, except for the Marine Docks, butane blending and ethanol denaturing, is inclusive of all Services provided hereunder, including additization, renewable fuel blending and Transmix handling.

Excess Throughput Fee. For volume of MPC’s Products (excluding Transmix and EV) redelivered hereunder in excess of the Minimum Quarterly Terminal Volume Commitment, the excess throughput fee for each corresponding Terminal set forth on Schedule 5.1 (each an “Excess Throughput Fee”) shall apply. The Excess Throughput Fee shall be charged on a per Gallon basis measured at the redelivery point and, except for the Marine Docks, butane blending and ethanol denaturing, is inclusive of all Services provided hereunder, including additization, renewable fuel blending and Transmix handling.

Marine Docks. With respect to the Marine Docks, the Fees shall also include a Monthly facility fee set forth on Schedule 5.1 for the exclusive suite of Services typically applicable to marine dock facilities and provided at the Marine Docks. Such facility fees for the Marine Docks shall be payable by MPC on a Monthly basis during the Term, regardless of the actual volumes of Products throughput by or on behalf of MPC at such Marine Docks.

Butane Blending. The fees for butane blending Services provided by Terminal Owner to MPC or its designated customers hereunder shall be calculated and charged as set forth on Schedule 5.1.

Ethanol Denaturing. The fees for ethanol denaturing Services provided by Terminal Owner hereunder shall be calculated and charged as set forth on Schedule 5.1.

Deficiency.

Quarterly Deficiency. If MPC fails to meet any of its Minimum Quarterly Terminal Volume Commitments during any Calendar Quarter, then MPC will pay Terminal Owner a deficiency payment (each, a “Terminal Deficiency Payment”) equal to the volume in Gallons of the Minimum Quarterly Terminal Volume Commitment deficiency multiplied by the applicable Base Throughput Fee for the affected Terminal; provided, that notwithstanding anything to the contrary herein including the fact that MPC failed to meet a Minimum Quarterly Terminal Volume Commitment for a particular Terminal during a Calendar Quarter, (A) MPC shall not be liable for payment of any Terminal Deficiency Payment if (1) such Terminal is included in a Terminal Complex; and (2) the applicable Aggregate Actual Complex Volume for the applicable Calendar Quarter meets or exceeds the Aggregate Committed Complex Volume for such Calendar Quarter; and (B) if the Aggregate Committed Complex Volume for such Calendar Quarter exceeds the Aggregate Actual Complex Volume for such Calendar Quarter, MPC, as to such Terminals in the Terminal Complex, shall be liable for a Terminal Deficiency Payment equal to the sum of: (1) at each Terminal included in such Terminal Complex which failed to meet its Minimum Quarterly Terminal Volume Commitment, the volume in Gallons of the Minimum Quarterly Terminal Volume Commitment deficiency divided by the sum of the differences between the volume in Gallons of the Minimum Quarterly Terminal Volume Commitment and the actual volume of Products in Gallons tendered for redelivery at each Terminal in such Terminal Complex that experienced a deficiency during such Calendar Quarter, (2) for each such Terminal, multiplied by the difference by which the Aggregate Committed Complex Volume for such Calendar Quarter exceeds the Aggregate Actual Complex Volume for such Calendar Quarter, and (3) multiplied by the applicable Base Throughput Fee for each such Terminal.

Quarterly True-Up. Promptly following each Calendar Quarter, Terminal Owner shall provide MPC a written statement showing the Quarterly Aggregate Volume Commitment versus the Actual Quarterly Aggregate Volume. If the Actual Quarterly Aggregate Volume exceeds the Quarterly Aggregate Volume Commitment, MPC shall not owe and shall be relieved from payment to Terminal Owner of any Terminal Deficiency Payments determined pursuant to Section 5.1(f)(i) for the applicable Calendar Quarter.

Exclusive Remedy. Section 5.1(f) sets forth Terminal Owner’s sole and exclusive remedy for MPC’s failure to meet any of its Minimum Quarterly Terminal Volume Commitments or, if applicable, Aggregate Committed Complex Volumes, during any applicable Calendar Quarter.

Unit Train Ethanol Receipts. The fees for Services provided by Terminal Owner to MPC to support Unit Train Ethanol Receipts shall be calculated and charged as set forth on Schedule 5.1.

This Amendment constitutes the entire agreement among the parties regarding this subject matter and may be amended or modified only by a written instrument signed by each of the parties.

This Amendment supersedes any other prior agreements or understandings of the parties relating to this subject matter and the parties are not relying on any statement, representation, promise or inducement not expressly set forth herein.

This Amendment may be executed in one or more counterparts, and in both original form and one or more photocopies, each of which shall be deemed to be an original, but all of which together shall be deemed to constitute one and the same instrument.

Daily Butane Value (“DBV”): the daily agreed upon butane purchase price (“BPP”) from ETP plus the total daily RIN value (DRV), multiplied by the daily total number of butane gallons blended (“GB”). Expressed as a formula:

Profit Sharing Payment (“PSP”): For each calendar month, a Profit Sharing Payment is paid by ETP to MPC for volumes blended at the Bay City terminal. The (“PSP”) is calculated as the volume of gallons blended (“GB”) at Bay City in such month multiplied by fifty percent multiplied by the following value: (A) the volume weighted daily average of the high and low assessments of Argus posted Chicago Cycle 1 gasoline price (85 CBOB) minus (B) the volume weighted daily average of the high and low assessments of the OPIS posted Mt. Belvieu TET normal butane price minus (C) the average supply cost.

Annual True-Up: This cost or revenue is intended to cover changes in the estimated vs actual transportation costs, half of shared maintenance expenses, and estimated vs actual butane purchase costs. The cost or revenue is calculated by ETP. MPC will pass ninety-five (95%) of this to Terminal Owner.

Tank Daily Gasoline Value (“TDGV”): Expressed as a formula:

The GPV is calculated by location using the daily posted average of either Argus 85 CBOB or Argus PREM spot prices for the respective blend and market derived from Schedule 3.1.

The TF is the avoided MPC cost of transporting one Gallon of gasoline (in the most cost effective method possible) to a terminal blending location, as verified and provided by MPC’s Supply Distribution & Planning - Light Products Project Analysis organization.

Tank Daily Butane Value (“TDBV”): the daily agreed upon tank butane purchase price (“TBPP”) from supplier, plus the total daily RIN value (DRV), multiplied by the daily total number of butane gallons blended (“GB”). Expressed as a formula:

The TC is the trucking cost of transporting one Gallon of butane (in the most cost effective method possible) to a terminal blending location..

“DRV” will be determined by using the percentage of each type of RINs specified by the Renewable Fuel Standard Program updated annually or the most recent requirements and will be adjusted retroactively for any difference between the requirements at the time of the calculation and the requirements contained in a final rule establishing Renewable Volume Obligations for the year. OPIS daily posting for the respective RINs pricing will be used. In order to minimize the daily average RINs Cost, postings for prior years RINs will be used up to the maximum allowable percentage.

In the event MPC requests the butane skid for temporary use at an MPC owned terminal(s), MPC shall pay an MPLX Tank Butane Blending Equipment Service Fee equal to 5% of the blending value. Expressed as a formula:

MPLX Tank Butane Blending Equipment Service Fee = (TDGV-TDBV)* 5%.

Annual Adjustment to Revenue: This cost or revenue is intended to cover changes in the estimated vs actual transportation costs. Annually during the month of April, MPC will issue an adjustment of revenue to MPLX. This adjustment will be the result in changes of actual vs previously estimated trucking costs associated with delivery of butane to the terminals for the previous April- March.