Transaction Confirmation, dated as of April 1, 2021, by and between Iogen RC Fuels LP and GSF Energy, LLC

The parties acknowledge (a) Buyer will resell the RNG purchased hereunder to the Refiner Counterparty, and (b) the Refiner Counterparty will make RC Fuels using technology licensed from Buyer and such RC Fuels will be transported to Europe, sold for use only in European transportation fuel markets and to generate Fuel Credits.

For the Contract Quantity set forth in this Transaction Confirmation, Seller will provide Buyer with its non-binding estimation of the RNG quantity that it expects to deliver during the following RNG delivery Month no later than the seventh (7^th) Business Day before the first Day of the next RNG delivery Month. For the final RNG delivery Month of any Contract Period, Seller will nominate a quantity equal to the Contract Quantity for such Contract Period minus the Delivered Volume. For any Month other than the final Month of the applicable Contract Period, Seller will nominate a quantity that shall be [***].

RNG quantities will be nominated ratably over the course of the delivery Month but Seller will, in the event of production shortfalls, have the option to change daily nominations at the Delivery Point for any delivery Day during the Month as long as such nominations are made by Seller by no later than 5:00 a.m. Central Prevailing Time the Day before the delivery Day. Weekend and holiday volumes will be nominated ratably over the Saturday - Monday or applicable period.

Mutual Representations and Warranties:

Each Party represents, warrants, and covenants to the other Party as of the Effective Date:

Seller’s Ongoing Representations, Warranties and Covenants

In addition to the representations and warranties set forth above, Seller represents, warrants and covenants to Buyer as of the Effective Date of this Transaction Confirmation and on each Day thereafter until the end of the Delivery Period that:

Buyer’s Ongoing Representations, Warranties and Covenants

In addition to the representations and warranties set forth above, Buyer represents, warrants and covenants to Seller as of the execution date of this Transaction Confirmation and on each Day thereafter until the end of the Delivery Period that:

Commodity Trade Option Representations:

The parties agree that this transaction is a forward contract within the meaning of the Commodity Exchange Act (the “Act”), as amended, and the Rules of the Commodity Futures Trading Commission (“CFTC”), and in reliance upon such agreement, as of the date the transaction is entered into:

To the extent the transaction is deemed to be a commodity option:

Seller agrees in connection with the sale of RNG hereunder to (i) assign to Buyer all Renewable Attributes associated with such RNG, and (ii) provide any agreement, attestation, certification and/or other document reasonably requested to meet the requirements of any applicable Governmental Authority having jurisdiction over the RNG or Renewable Attributes relating to the RNG.

Seller will provide Buyer with such cooperation, documentation, certifications, site visits or other information, support or assistance as may be reasonably necessary to carry out the purposes of this Transaction Confirmation in order for (i) title to the conveyed Renewable Attributes to vest in Buyer in connection with the purchase and sale of RNG hereunder and (ii) Buyer, Refiner Counterparty or its designee to be able to monetize the value of the Renewable Attributes by production and sale of RC Fuels in Europe. Such requirements include but are not limited to Seller having an obligation to:

Seller will provide Buyer on a monthly basis data sufficient to monitor the GHG emissions performance of the RNG Facilities, and Buyer will provide Seller on a monthly basis a rolling evaluation of the expected upcoming ISCC GHG emissions verification periods, including performance relative to the maximum permissible GHG emissions levels.

Buyer will provide Seller on a monthly basis affidavits attesting to the volume accepted by Buyer from Seller from each of the RNG Facilities.

In the event that at any time, and from time to time, during the Term any Applicable Laws are changed, applied or interpreted differently to Seller by a certification entity than applied as of the date of this Transaction Confirmation or new Applicable Laws are promulgated that result in Seller no longer being able, using all commercially reasonable best efforts, to:

In the event that at any time, and from time to time, during the Term, Buyer receives written notice under the RNG Purchase and Sale Agreement from Refiner Counterparty that it is experiencing a Material Hardship that is continuing, Buyer shall promptly inform Seller of such notice, including the start and end date for the [***] time period for renegotiation. In the event that, following a good faith effort to renegotiate the terms of the RNG Purchase and Sale Agreement, and provided that Seller has delivered at least [***] MMBtu of RNG hereunder as of such end date, the Refiner Counterparty shall have a right to give notice to Buyer that it is terminating the RNG Purchase and Sale Agreement as of such end date:

In the event of such termination, Early Termination Damages will be payable by Buyer to Seller (in addition to any unpaid amounts for RNG delivered prior to termination), in an amount equal to: [***].

Seller acknowledges that a failure of the Refiner Counterparty to perform or have performed the activities listed under clause (b) of Section 1 “General Terms and Conditions” above, by reason of an occurrence that meets the requirements of clause (vii) of Section 11.2 of the Base Contract defining a Force Majeure, would result in a Force Majeure hereunder.

The Cover Standard shall be based upon (i) if the Buyer is the performing party, the Buyer obtaining Qualified RNG and (ii) if the Seller is the performing party, the Seller selling Qualified RNG.

For the purposes of this Transaction Confirmation, without limiting the other remedies that may be available including the declaration of an Early Termination Date, in the event of a breach of Seller’s Ongoing Representations, Warranties and Covenants in respect of the RNG delivered hereunder resulting in the inability or failure of a quantity of RNG purchased and sold hereunder to qualify for the generation of Fuel Credits in any applicable European jurisdiction or any such Fuel Credits generated from a quantity of RNG purchased hereunder being subsequently invalidated, then, in the event Seller has not made arrangements to provide replacement Qualified RNG acceptable to Buyer, acting reasonably, (a) Seller shall pay Buyer an amount equal to the purchase price paid by the Buyer for replacement Qualified RNG utilizing the Cover Standard and (b) such breach shall constitute an additional Event of Default under Section 10.2 of the Base Contract.

Each party agrees to provide prompt written notice to the other party of any fact, circumstance or event which would be a breach under any of the representations, warranties or covenants set forth in this Transaction Confirmation, assuming solely for purposes of this notice requirement that such representations and warranties were made as of the date of such fact, circumstance or event.

Any declaration of an Early Termination Date arising with regard to any Events of Default shall be applicable to the termination and settlement of this Transaction Confirmation only, and shall not affect any other Transaction Confirmations then in place between Buyer and Seller, nor shall the Base Contract be terminated thereby. Early Termination Damages will apply under any declaration of an Early Termination Date in respect of this Transaction Confirmation. When determining Market Value under Section 10.3.1 of the Base Contract, a party shall be entitled to consider the Market Value of Qualified RNG. The parties agree that this determination of Market Value shall constitute a reasonable basis for the calculation of damages and shall not be considered consequential damages described in Section 13 of the Base Contract.

Notwithstanding anything to the contrary in Section 15.1 of the Base Contract, Buyer may collaterally assign and grant a security interest in this Agreement to Refiner Counterparty to secure Buyer’s obligations under the RNG Purchase and Sale Agreement. Copies of any notices of default by Buyer under this Agreement shall be provided to Refiner Counterparty at the address set forth in Schedule 2 concurrently with any such notices to the Buyer. Seller and Buyer each agree that Seller shall provide Refiner Counterparty the opportunity to cure any Event of Default of Buyer under this Agreement (upon the same terms and conditions for a cure by Buyer under the applicable provisions hereof), and subsequently perform or pay any related obligation of Buyer under this Agreement, on behalf of Buyer, without Refiner Counterparty assuming any obligations or liabilities of Buyer hereunder, unless Refiner Counterparty, following the occurrence of an event of default under the RNG Purchase and Sale Agreement, elects to assume the rights and obligations of Buyer under this Agreement in which case Refiner Counterparty shall have the opportunity to cure and perform as set forth above and shall assume any and all obligations and liabilities of Buyer under this Agreement. In the event of any assumption of this Agreement by Refiner Counterparty, then Refiner Counterparty and Seller shall enter into a Base Contract on terms substantively the same as the Base Contract between Buyer and Seller and shall establish a new two-party cash account into which amounts then on deposit in the Controlled Cash Account shall be transferred and disbursements from which shall require joint written instructions of the Refiner Counterparty and Seller. The provisions of this Section 10 may not be amended, modified or waived except with the prior written consent of Refiner Counterparty.

The terms of this Agreement, and all confidential or proprietary information disclosed between the Parties or their Affiliates in connection with this Agreement, shall be subject to the Confidentiality Agreement between the Parties dated

September 1, 2020, and such Confidentiality Agreement shall remain in full force and effect (notwithstanding any earlier termination thereof in accordance with its terms) with respect to such information until the second anniversary of the end of the Delivery Period. Notwithstanding for foregoing, each Party shall be permitted to make disclosure of this Agreement as necessary to comply with its reporting obligations under any applicable law, order, regulation or exchange rule, provided that the commercial and economic terms herein shall be redacted to the extent permissible thereunder.

Capitalized terms used in this Transaction Confirmation but not defined herein are as defined in the Base Contract. In addition to the capitalized terms defined elsewhere in this Transaction Confirmation, the following terms have the respective meanings set forth below:

“Applicable Law” means any European Union, national, federal, state or local law, statute, regulation, code, ordinance, license, permit, compliance requirement, decision, order, writ, injunction, directive, judgment, policy, decree, including any judicial or administrative interpretations thereof, or any agreement, concession or arrangement with any Governmental Authority, applicable to either party or either party’s performance under this Transaction Confirmation, and any amendments or modifications to the foregoing.

“Biogas” means a mixture of hydrocarbons that is a gas at 60 degrees Fahrenheit and 1 atmosphere of pressure that is produced through the anaerobic digestion of organic matter.

“Brown Gas Transaction Confirmation” means the transaction confirmation under the Base Contract for the sale by Buyer to Seller of the Contract Quantity of Gas without Renewable Attributes at the Delivery Point.

“Commencement Date” means July 1, 2021.

“commercially reasonable best efforts” means, with respect to a given covenant, the efforts that a reasonable person in the position of the promisor would use so as to expeditiously achieve that covenant, but does not include any action or expenditure that is commercially unreasonable or unduly burdensome.

“Contract Period” means, in respect of the Delivery Period, the period from [***].

“Controlled Cash Account” has the meaning set forth in the section titled “Buyer’s Ongoing Representations, Warranties and Covenants”.

“Delivered Volume” means, in respect of a specific RNG delivery Month in a specific Contract Period, the total quantity of RNG delivered during all RNG delivery Months of the applicable Contract Period prior to the applicable RNG delivery Month

“Fuel Credits” mean instruments issued by any Governmental Authority in respect of the Renewable Attributes of a transportation fuel.

“GHG Emission Standard” has the meaning set forth in the section above entitled “Seller’s Ongoing Representations, Warranties and Covenants”.

“Governmental Authority” means any super-national, national, federal, state, local or other governmental, regulatory or administrative agency, court, commission, department, board or other governmental subdivision, legislature, rulemaking board, tribunal, or other governmental authority. Governmental Authority includes, but is not limited to, the European Union.

“ISCC” means International Sustainability & Carbon Certification, a voluntary scheme recognized by the European Commission pursuant to COMMISSION IMPLEMENTING DECISION (EU) 2016/1361 of 9 August 2016.

“ISCC Certification” means a site-specific certificate (a) issued by a Cooperating Certification Body recognized by ISCC, or such other entity as may be approved in writing by Buyer, following an audit that includes verification of the RNG Facility’s actual GHG emission value and (b) certifying that the applicable economic operator complies with the requirements of RED and the ISCC-EU Voluntary Scheme (or such other scheme as may be approved in writing by

Buyer), and that the site of the applicable economic operator is certified for the conduct of specified activities in the biofuel supply chain, which certificate must be renewed on an annual basis.

“ISCC Documentation” means a proof of sustainability in the case of a final biofuel such as an RC Fuel and a sustainability declaration in the case of a supply chain element upstream of the production of final biofuel such as RNG, in each case on the template and in compliance with the requirements therefor prescribed by the ISCC, or such other entity as may be approved in writing by Buyer, and if applicable, a statement of no double claiming.

“Material Hardship” means [***].

“Net Delivery Surplus” means, in respect of a specific RNG delivery Month in a specific Contract Period, (i) the total quantity of RNG delivered during all RNG delivery Months of the applicable Contract Period prior to the applicable RNG delivery Month, minus (ii) [***]MMBtu per Day multiplied by the number of Days from the first Day of the applicable Contract Period to the first Day of the applicable RNG delivery Month.

“Qualified RNG” means RNG for which ISCC Documentation has been issued and the information contained therein regarding certification and sustainability characteristics of such RNG is complete, accurate, and in compliance with all applicable requirements.

“RC Fuel” means renewable co-processed transportation fuel made using hydrogen derived from RNG and hydrocarbons derived from oil as feedstocks.

“Refiner Counterparty” means the entity set forth in Schedule 2 to this Transaction Confirmation and all its Affiliates.

“Renewable Attribute” means a recognition or entitlement, in any form and any jurisdiction, associated with a fuel and relating to a reduction in greenhouse gas emissions resulting from such fuel’s use or to the renewable origin of such fuel itself.

“RNG”, or “renewable natural gas” (also referred to as biomethane) means pipeline-quality Natural Gas made from Biogas, such Natural Gas containing all Renewable Attributes associated with such Biogas. RNG includes: (a) pipeline-quality Natural Gas injected into the natural gas pipeline, and (b) a corresponding quantity of Natural Gas withdrawn from a physically connected pipeline, in each case containing the corresponding Renewable Attributes.

“RNG Facilities” means the facilities owned by Seller, used to produce the RNG sold hereunder and listed in Schedule 1 to this Transaction Confirmation.

“RNG Purchase and Sale Agreement” has the meaning set forth in the second bullet of the section entitled “Buyer’s Ongoing Representations, Warranties and Covenants”.