ACKNOWLEDGMENT OF RECEIPT, UNDERSTANDING AND AGREEMENT

Arbitration Policy. I have received and read a copy of Upstream International, LLC’s Arbitration Provision in Independent Contractor Agreement (“Policy”) maintained by Upstream International, LLC (“Contractor”). A copy of that Policy is attached to this Acknowledgment. I acknowledge that I am required to adhere to this Policy and that the Policy is applicable to Pioneer Natural Resources USA, Inc., Pioneer Natural Resources Pumping Services LLC, Pioneer Natural Resources Well Services LLC, Pioneer Water Management LLC, and Pioneer Sands LLC f/k/a Premier Silica LLC (collectively, “Pioneer”) as well as to Contractor. I understand that the Policy applies to any dispute in any way related to my assignment to provide services to Pioneer currently, in the past and in the future. The types of disputes covered are stated in the Policy, and by way of example only, include any dispute or complaint concerning the fee I received for my services to Pioneer, including, but not limited to, claims for wages and/or overtime and damages, and any other claims relating to my services while assigned to Pioneer. I understand that any dispute will be submitted to final and binding arbitration before an arbitrator rather than a judge or jury in court. I also understand that I can only arbitrate my own disputes and may not bring or join class or collective actions, including, but not limited to, lawsuits claiming unpaid wages or overtime under the Fair Labor Standards Act or state wage law.

Independent Sub-Contractor. I understand that I am an independent sub-contractor of Contractor and Pioneer and that I am not an employee or joint employee of Pioneer. I understand that Contractor and/or Pioneer do not direct or supervise me in the details of my work and are only interested in the results of my services. I understand that I retain the discretion to accept or reject assignments for Pioneer. I can work for any other company desiring my services and abilities.

Understood and Agreed: