THACKER POA

POWER OF ATTORNEY FOR EXECUTING FORM ID,
FORMS 3, FORMS 4 AND FORMS 5, FORM 144
AND SCHEDULE 13D AND SCHEDULE 13G
The undersigned hereby constitutes and appoints
Adam R. Law, Holli C. Ladhani and the Section
16 Compliance Officer, or any of them acting
without the others, with full power of
substitution, as the undersigneds true and
lawful attorney-in-fact to:
(1) Execute for and on behalf of the undersigned
a Form ID (including amendments thereto), or any
other forms prescribed by the U.S. Securities and
Exchange Commission (the SEC), that may be
necessary to obtain codes and passwords enabling
the undersigned to make electronic filings with
the SEC of the forms referenced in clause (2) below;
(2) Execute for and on behalf of the undersigned any
(a) Form 3, Form 4 and Form 5 (including amendments
thereto) in accordance with Section 16(a) of the
Securities Exchange Act of 1934, as amended
(the Exchange Act), and the rules thereunder,
(b) Form 144 (including amendments thereto) and
(c) Schedule 13D and Schedule 13G (including
amendments thereto) in accordance with Sections
13(d) and 13(g) of the Exchange Act, but only to
the extent each form or schedule relates to the
undersigneds beneficial ownership of securities
of Select Energy Services, Inc. or any of its
subsidiaries;
(3) Do and perform any and all acts for and on
behalf of the undersigned that may be necessary
or desirable to complete and execute any Form ID,
Form 3, Form 4, Form 5, Form 144, Schedule 13D
or Schedule 13G (including amendments thereto)
and timely file the forms or schedules with the
SEC and any stock exchange or quotation system,
self-regulatory association or any other
authority, and provide a copy as required by law
or advisable to such persons as the
attorney-in-fact deems appropriate; and
(4) Take any other action in connection with the
foregoing that, in the opinion of the
attorney-in-fact, may be of benefit to, in the
best interest of or legally required of the
undersigned, it being understood that the
documents executed by the attorney-in-fact on
behalf of the undersigned pursuant to this Power
of Attorney shall be in the form and shall contain
the terms and conditions as the attorney-in-fact
may approve in the attorney-in-facts discretion.
The undersigned hereby grants to the
attorney-in-fact full power and authority to do and
perform all and every act requisite, necessary or
proper to be done in the exercise of any of the
rights and powers granted herein, as fully to all
intents and purposes as the undersigned might or
could do if personally present, with full power of
substitution or revocation, hereby ratifying and
confirming all that the attorney-in-fact shall
lawfully do or cause to be done by virtue of this
Power of Attorney and the rights and powers granted
herein. The undersigned acknowledges that the
attorney-in-fact, in serving in such capacity at the
request of the undersigned, are not assuming
(nor is Select Energy Services, Inc. assuming)
any of the undersigneds responsibilities to comply
with Section 16 of the Exchange Act.
The undersigned agrees that the attorney-in-fact
may rely entirely on information furnished orally
or in writing by or at the direction of the
undersigned to the attorney-in-fact. The undersigned
also agrees to indemnify and hold harmless Select
Energy Services, Inc. and the attorney-in-fact
against any losses, claims, damages or liabilities
(or actions in these respects) that arise out of or
are based upon any untrue statements or omissions of
necessary facts in the information provided by or at
the direction of the undersigned, or upon the lack of
timeliness in the delivery of information by or at the
direction of the undersigned, to the attorney-in fact
for purposes of executing, acknowledging, delivering or
filing a Form ID, Form 3, Form 4, Form 5, Form 144,
Schedule 13D or Schedule 13G (including amendments thereto)
with respect to the undersigneds holdings of and
transactions in securities issued by Select Energy Services,
Inc. and agrees to reimburse Select Energy Services, Inc.
and the attorney-in-fact on demand for any legal or other
expenses reasonably incurred in connection with investigating
or defending against any such loss, claim, damage, liability
or action.
This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Form ID,
Form 3, Form 4, Form 5, Form 144, Schedule 13D and Schedule
13G (including amendments thereto) with respect to the
undersigneds holdings of and transactions in securities issued
by Select Energy Services, Inc., unless earlier revoked by the
undersigned in a signed writing delivered to the attorney-in-fact.
This Power of Attorney does not revoke any other power of attorney
that the undersigned has previously granted.
[Signature Page Follows]
IN WITNESS WHEREOF, the undersigned has caused this Power
of Attorney to be executed as of the date written below.

Dated: May 8, 2020
__________________________________________
Troy Thacker
Director