1) AGC of Texas

2) AgriRock, L.L.C.

3) Arcosa LWS, LLC

4) Arcosa Materials, Inc.

5) BFI Waste Services of Texas, LP

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) Elgin 104 Holdings LLC

13) FA Victoria 1 LLC

14) First Ammonia LLC

15) Florence 160 Dev LLC

16) Florence FM 970 Ventures, LLC

17) Flying W Properties, Ltd.

18) Fox Tank Company

19) Freedom Boats USA, LLC

20) Heartland Quarries LLC

21) HillCo Partners, LLC

22) HTX Utility Solutions LLC

23) Hunter Industries Ltd.

24) Indorama Ventures Oxides LLC

25) Jewett Mine LLC

26) Jimmy Evans Company, LTD.

27) JTX Land Holdings LLC

28) Lion Elastomers LLC

29) Muldoon Minerals, Inc.

30) Northwest Williamson County Municipal Utility District No. 3

31) NRG Texas Power, LLC

32) PHR Holdings LLC

33) Pleak 54 Holdings LLC

34) Republic EES, LLC

35) Republic Services, Inc.

36) Republic Waste Services of Texas, Ltd.

37) RGI Materials Inc.

38) Second Nature Compost LLC

39) SL Energy Power Plant I, LLC

40) Southwest Shipyards L.P.

41) Structural Metals, Inc.

42) US Ecology Texas, Inc.

43) US Ecology, Inc.

44) Weisman Equipment Company, Ltd.

45) Wharton County Generation, LLC

46) Williams Brothers Construction Co., Inc.

47) Williamson County Municipal Utility District No. 42

48) Zinc Resources LLC