Power of Attorney
(Limited to Execution of Forms 4 and 5)


I, Kevin S. McCarthy, do hereby constitute and appoint Rajesh Sharma
and Patrick Whitman (with full power to each of them to act alone) as my true
and lawful agents and attorneys-in-fact with full power and authority to
execute and deliver on my behalf in accordance with Securities and Exchange
Commission rules and regulations all reports of changes in my beneficial
and 5 as may be deemed advisable.  I hereby ratify and confirm all that each
such agent and attorney-in-fact may do by virtue hereof with respect to reports
 of my beneficial ownership of securities issued by Apache Midstream Company.

This power of attorney shall remain in full force and effect until I am no
longer required to file Forms 4 and 5 with respect to changes in my
beneficial ownership of securities issued by Altus Midstream Company,
unless earlier revoked by me in writing delivered to the
attorneys-in-fact named above.

In witness whereof, I have duly executed this power of attorney
on the 19th day of December 2018.


/s/ Kevin McCarthy


State of Texas
County of Harris

On this 19th day of December 2018, before me personally came Kevin
S. McCarthy, to me known, and acknowledged this instrument.
Witness my hand and official seal.



/s/ Melinda Jenkins
[Seal for Melinda Jenkins]
[Notary Public, State of Texas]
[My Commission Expires 07-25-2020]