| Us Ecology Texas Inc | Robstown | 701.8k |
| Clean Harbors Deer Park Llc | La Porte | 533.5k |
| Inv Nylon Chemicals Americas Victoria Site | Victoria | 222.7k |
| Oak Grove Steam Electric Station | Franklin | 98.2k |
| San Miguel Electric Cooperative Inc | Christine | 85.4k |
| Graphic Packaging International Llc | Queen City | 43.4k |
| Westrock Texas Lp | Evadale | 38.8k |
| Martin Lake Steam Electric Station & Lignite Mine | Tatum | 36.8k |
| Union Processing Systems Llc | Conroe | 32.9k |
| Limestone Electric Generating Station | Jewett | 32.0k |
| W.a. Parish Electric Generating Station | Thompsons | 31.3k |
| Sandy Creek Energy Station | Riesel | 24.3k |
| Ash Grove Cement Co | Midlothian | 13.4k |
| American Electric Power Welsh Plant | Pittsburg | 11.6k |
| Everzinc Usa Houston Plant - Metal | Houston | 9.0k |
| Calaveras Power Station | San Antonio | 8.5k |
| Deer Park Refining Lp | Deer Park | 6.5k |
| Chaparral Steel Midlothian Lp | Midlothian | 6.0k |
| Tyler Pipe Co | Tyler | 5.9k |
| Structural Metals Inc | Seguin | 5.5k |
| Southwest Galvanizing Inc | Houston | 3.9k |
| Nucor Steel - Jewett Texas Div | Jewett | 3.7k |
| Optimus Steel Llc | Vidor | 3.7k |
| Coleto Creek Power Station | Fannin | 3.5k |
| Merchant Metals Llc | Houston | 3.5k |
| Lcra Fayette Power Project | La Grange | 3.3k |
| Gulf Coast Growth Ventures Llc | Gregory | 3.3k |
| Valero Refining-Texas Lp | Texas City | 2.2k |
| Shell Chemical Lp | Deer Park | 2.1k |
| Dow Sabine River Operations | Orange | 1.9k |
| Azz Galvanizing Services-Crowley | Crowley | 1.9k |
| Eastman Chemical Co Texas Operations | Longview | 1.8k |
| Philllips 66 Co Borger Refinery | Borger | 1.6k |
| Mobil Chemical Co Beaumont Polyethylene Plant | Beaumont | 1.4k |
| Diamond Shamrock Refining Co Lp | Sunray | 1.4k |
| Motiva-Port Arthur Refinery | Port Arthur | 1.3k |
| Southwestern Public Service Co Harrington Station | Amarillo | 1.3k |
| Azz Galvanizing Services-Houston | Houston | 1.3k |
| North American Galvanizing Co Hurst | Hurst | 1.2k |
| Valtris Specialty Chemicals | Fort Worth | 1.2k |
| Vinton Steel Llc | Vinton | 1.1k |
| Basf Corp - Freeport Site | Freeport | 947 |
| Bridgestone Bandag Llc Abilene Plant | Abilene | 899 |
| Lubrizol Corp Deer Park Facility | Deer Park | 889 |
| Chevron Phillips Chemical Co - Pasadena Plastics Complex | Pasadena | 831 |
| Azz Galvanizing - Kennedale | Kennedale | 683 |
| United Galvanizing Inc. | Houston | 657 |
| Beaumont Gas-To Gasoline Plant | Beaumont | 598 |
| Veolia Es Technical Solutions Llc Port Arthur Facility | Beaumont | 576 |
| Provimi Na Inc | Weatherford | 505 |
| Zinkpower Waco | Woodway | 456 |
| Exxonmobil Mont Belvieu Plastics Plant | Baytown | 435 |
| Century Industrial Coatings I Nc. | Jacksonville | 426 |
| Songwon International Americas Inc. - La Porte | La Porte | 425 |
| Azz Galvanizing - San Antonio | San Antonio | 377 |
| Metalplate Galvanizing Lp | Houston | 368 |
| Chevron Phillips Chemical Co Lp | Baytown | 368 |
| Formosa Plastics Corp Texas | Point Comfort | 349 |
| Benjamin Moore & Co-Dallas | Mesquite | 328 |
| Afton Chemical Corp | Pasadena | 323 |
| Azz Galvanizing Services - Houston West | Houston | 313 |
| Azz Galvanizing Services-Beaumont | Beaumont | 313 |
| Oxea Corp Bay City Plant | Bay City | 308 |
| K-T Galvanizing Co | Venus | 293 |
| Sabre Industries | Conroe | 275 |
| Gmc Truck Group Arlington Assembly Plant | Arlington | 273 |
| Marshall Minerals Inc | Marshall | 250 |
| Catalyst Oilfield Services 2016 Llc | Gardendale | 250 |
| Azz Galvanizing Services-Waskom | Waskom | 250 |
| Invista Longview | Longview | 243 |
| Vibrantz Energy Llc | Houston | 239 |
| Totalenergies Petrochemicals & Refining Usa Inc | La Porte | 223 |
| Hearne Steel Co. Inc. | Hearne | 201 |
| 3m Co - Brownwood | Brownwood | 199 |
| K-T Galvanizing Co | Katy | 179 |
| Nibco Inc Nacogdoches Plant | Nacogdoches | 160 |
| Metalplate Galvanizing Lp | Houston | 155 |
| Equistar Chemicals Lp | La Porte | 150 |
| Shannon Galvanizing | Floresville | 132 |
| Anheuser-Busch Llc | Houston | 132 |
| Sabre Industries | Alvarado | 130 |
| Madden Galvanizing Llc | Houston | 111 |
| Encore Wire Corp | Mc Kinney | 102 |
| Vitro Flat Glass Llc Works 4 | Wichita Falls | 99 |
| Oil States Industries Inc. | Arlington | 98 |
| Union Carbide Corp Seadrift Plant | Seadrift | 88 |
| International Paint Llc | Houston | 81 |
| Ppg Industries Inc Tx | Gainesville | 69 |
| Lyondellbasell Acetyls Llc | La Porte | 60 |
| Master-Halco | Dallas | 58 |
| Joy Global Longview Operations Llc | Longview | 58 |
| Tyco Fire Protection Products | Lubbock | 53 |
| Usgypsum Co Galena Park | Galena Park | 49 |
| Lion Elastomers Llc | Port Neches | 40 |
| Faci Usa Inc | Lufkin | 28 |
| Mica Steelworks-Kaufman | Kaufman | 26 |
| Rex-Hide Industries Inc | Tyler | 25 |
| Nouryon Functional Chemicals Llc | La Porte | 24 |
| The Pittsburgh Paints Co. | Carrollton | 24 |
| Valvoline Global - Deer Park Tx | Deer Park | 22 |