1) AGC of Texas

2) AgriRock, L.L.C.

3) Arcosa Aggregates Texas, LLC

4) Arcosa LWS, LLC

5) Arcosa Materials, Inc.

6) BFI Waste Services of Texas, LP

7) Caliza Development LLC

8) Colorado Materials, Ltd.

9) Commercial Metals Company

10) D1 Real Estate LLC

11) Dallas/Fort Worth International Airport

12) Ector County Generation LLC

13) Elgin 104 Holdings LLC

14) FA Victoria 1 LLC

15) First Ammonia LLC

16) Florence 160 Dev LLC

17) Florence FM 970 Ventures, LLC

18) Flying W Properties, Ltd.

19) Fox Tank Company

20) Freedom Boats USA, LLC

21) Heartland Quarries LLC

22) HillCo Partners, LLC

23) HTX Utility Solutions LLC

24) Hunter Industries Ltd.

25) Indorama Ventures Oxides LLC

26) Jewett Mine LLC

27) Jimmy Evans Company, LTD.

28) JTX Land Holdings LLC

29) Lion Elastomers LLC

30) Muldoon Minerals, Inc.

31) Northwest Williamson County Municipal Utility District No. 3

32) NRG Texas Power, LLC

33) PHR Holdings LLC

34) Pleak 54 Holdings LLC

35) Republic EES, LLC

36) Republic Services, Inc.

37) Republic Waste Services of Texas, Ltd.

38) RGI Materials Inc.

39) Second Nature Compost LLC

40) SL Energy Power Plant I, LLC

41) Southwest Shipyards L.P.

42) Structural Metals, Inc.

43) US Ecology Texas, Inc.

44) US Ecology, Inc.

45) Weisman Equipment Company, Ltd.

46) Wharton County Generation, LLC

47) Williams Brothers Construction Co., Inc.

48) Williamson County Municipal Utility District No. 42

49) Zinc Resources LLC