Entity

State of Formation

Select Agua Libre Midstream, LLC

​

Delaware

Complete Energy Services, Inc.

​

Delaware

SES Holdings, LLC

Delaware

Select Water Solutions, LLC

Delaware

Peak Rentals, LLC

Texas

Select Chemistry, LLC

Delaware

SES Sub A, LLC

​

Delaware

SES Sub B, LLC

​

Delaware

SES Sub C, LLC

​

Delaware

Select Energy Solutions (RW), Inc.

​

Delaware

Navy Holdings, Inc.

​

Delaware

Navy Holdco, LLC

​

Delaware

New Heckmann Water Resources Corporation

​

Delaware

New Heckmann Water Resources (CVR), Inc.

​

Delaware

SES Intermediate Holdings, LLC

​

Delaware

Affirm Oilfield Services, LLC

​

Texas

Heckmann Water Resources, LLC

​

Delaware

Heckmann Water Resources (CVR), LLC

​

Delaware

NES Water Solutions, LLC

​

Delaware

Guard Drilling Mud Disposal, LLC

​

Delaware

China Water and Drinks, LLC

​

Delaware

Badlands Power Fuels, LLC

​

Delaware

Nuverra Ohio Disposal LLC

​

Delaware

1960 Well Services, LLC

​

Ohio

Badlands Power Fuels, LLC

​

North Dakota

Clearwater Three LLC

​

Ohio

Clearwater Five LLC

​

Ohio

Clearwater Solutions LLC

​

Ohio

HEK Water Solutions, LLC

​

Delaware

Nuverra Total Solutions, LLC

​

Delaware

Nuverra Rocky Mountain Pipeline, LLC

​

Delaware

Breakwater Energy Services, LLC

​

Texas

Breakwater Energy Partners, LLC

​

Texas

Breakwater Midstream, LLC

​

Texas

Big Spring Recycling System, LLC

​

Delaware

Landtech Enterprises, LLC

​

North Dakota

Badlands Leasing, LLC

​

North Dakota

Ideal Oilfield Disposal, LLC

​

North Dakota

Select Water Reuse, LLC

​

Delaware

Rockwater Energy Solutions Water Management, LLC

​

Delaware

Rockwater Northeast, LLC

​

Delaware

Rockwater West TX, LLC

​

Delaware

EnerMAX Services Holdings, LLC

​

Delaware

EnerMAX Services G.P. ULC

​

Alberta

EnerMAX Services Limited Partnership

​

Alberta

EnerMAX Services (U.S.) Inc.

​

Delaware

Rockwater Energy Solutions North Dakota, Inc.

​

Delaware

Rockwater Production Testing Ltd.

​

Alberta

Rockwater Energy Solutions Administrative Services, LLC

​

Delaware

Crescent Companies, LLC

SWS ND, Inc.

Neohydro LLC

Buckhorn Energy Oaks Disposal Services, LLC

Oak’s Disposal Services, LLC

Buckhorn Disposal ND, LLC

Dishon Disposal LLC

Trinity Acquisition, LLC

Trinity Environmental Brokerage, L.L.C.

Trinity Environmental Logistics, L.L.C.

Trinity Environmental SWS I. L.L.C.

Trinity Environmental Services L.L.C.

Trinity Environmental Management, LLC

Bobcat North Lima, LLC

Bobcat Hubbard, LLC

EWS #1 DJ Basin LLC

EWS #8 DJ Basin LLC

Blackjack Mineral Investments, LLC

​

Delaware

Delaware

Nevada

Delaware

Montana

Delaware

North Dakota

Delaware

Delaware

Delaware

Delaware

Delaware

Delaware

Ohio

Ohio

Delaware

Delaware

Delaware

Bobcat Coitsville, LLC

​

Ohio