1) AGC of Texas
2) Arcosa LWS, LLC
3) Arcosa Materials, Inc.
4) BFI Waste Services of Texas, LP
5) C&D Waste, Ltd
6) Caliza Development LLC
7) Colorado Materials, Ltd.
8) Commercial Metals Company
9) D1 Real Estate LLC
10) Dallas/Fort Worth International Airport
11) Ector County Generation LLC
12) FA Victoria 1 LLC
13) First Ammonia LLC
14) Flying W Properties, Ltd.
15) Fox Tank Company
16) Freedom Boats USA, LLC
17) HC Mining, LLC
18) HillCo Partners, LLC
19) Hunter Industries Ltd.
20) Indorama Ventures Oxides LLC
21) Jewett Mine LLC
22) Jimmy Evans Company, LTD.
23) Lion Elastomers LLC
24) Muldoon Minerals, Inc.
25) NRG Texas Power, LLC
26) PHR Holdings LLC
27) Pioneer Natural Resources USA, Inc.
28) Republic EES, LLC
29) Republic Services, Inc.
30) Republic Waste Services of Texas, Ltd.
31) RGI Materials Inc.
32) Rio Perla Properties, L.P.
33) Second Nature Compost LLC
34) Southwest Shipyards L.P.
35) Structural Metals, Inc.
36) Summit Next Gen, LLC
37) US Ecology Texas, Inc.
38) US Ecology, Inc.
39) Weisman Equipment Company, Ltd.
40) Wharton County Generation, LLC
41) Zinc Resources LLC