April 23, 2019

April 23, 2019

Altus Midstream Company

0000 Xxxx Xxx Xxxxxxxxx, Xxxxx 000

Houston, Texas 77056-4400

Attention: Xxxx Xxxxxxxx

Re: Waiver of Direct G&A Costs Under the Construction, Operations, and Maintenance Agreement

Reference is hereby made to the Construction, Operations and Maintenance Agreement entered into on November 9, 2018 by and between Apache Corporation, as Service Provider, and Altus Midstream Company, as Owner (the “COMA”). Capitalized terms used but not defined herein shall have the meaning ascribed to such terms under the COMA.

For the period beginning on April 1, 2019 until revoked at such time as Service Provider determines in its sole discretion, Service Provider hereby waives its right to charge and collect from Owner, either in whole or in part, certain or all of the Direct G&A Costs incurred for such period for services provided under the COMA. Such waiver is not and shall not constitute a waiver of, or consent to a change in, any other provision of the COMA.

Apache Corporation

By: /s/ Xxxxxxx X. Xxxxx     

Name: Xxxxxxx X. Xxxxx

Title: Executive Vice President and Chief Financial Officer