EmissionsLookup
Non-Compliance TRI Reporter Clean Air Act Clean Water Act RCRA

PHILLIPS 66 CO - SWEENY REFINERY

Quick Summary

  • Released 992,522 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
  • Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
  • Assessed $554,804 in total penalties since records began.
  • Reports releases of chemicals classified as known or probable carcinogens.
Address
8189 OLD FM 524
OLD OCEAN, TX 77463
View on map ↗
County
BRAZORIA County
Industry
Manufacturing
NAICS (North American Industry Classification)
324110
Inspections
11 · last Jul 8, 2025
Total Penalties
$554,804 · last Sep 30, 2025
Registry ID
110007182360

How This Compares

#41 of 1,879 TRI reporters in TX
#211 of 16,877 TRI reporters in Manufacturing

Ranked by most recent year's total TRI releases.

Compliance Status (Last 12 Quarters)

Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.

2
Air (CAA)
Qtrs Non-Compliant
10
Water (CWA)
Qtrs Non-Compliant
9
Hazardous Waste (RCRA)
Qtrs Non-Compliant

TRI Toxic Chemical Releases

Annual pounds of each toxic chemical released to air, water, and land, as reported to the EPA Toxic Release Inventory. Carcinogen (♦) and PFAS designations are per EPA and IARC classifications.

Emissions Trend (2015–2024) -25% overall
Year Total Releases (lbs) vs Prior Year
2015 1,213,496
2016 914,863 -25%
2017 992,522 +8%
2018 980,852 -1%
2019 675,699 -31%
2020 979,333 +45%
2021 544,778 -44%
2022 1,684,023 +209%
2023 915,785 -46%
2024 908,330 -1%

2024

Chemical Total (lbs) Air Water Land Off-Site
Tetrachloroethylene 152 ♦ Carcinogen
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 678,814 678,814
n-Hexane 38,682 38,682
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 32,437 32,437
Benzene 22,923 22,923 15 ♦ Carcinogen
Propylene 21,005 21,005
Diethanolamine 17,205 17,205
Hydrogen cyanide 14,328 14,318 10
Toluene 13,093 13,093 97
Ammonia 12,937 3,763 9,174
Cyclohexane 11,905 11,905
Hydrogen sulfide 11,419 11,145 274
Xylene (mixed isomers) 6,613 6,613 232
1,3-Butadiene 6,219 6,219 ♦ Carcinogen
Methanol 6,139 6,139
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 3,698 3,698
Ethylene 3,358 3,358
Carbonyl sulfide 2,560 2,560
Ethylbenzene 1,499 1,499 49 ♦ Carcinogen
Nickel compounds 911 185 726 3,086 ♦ Carcinogen
Carbon disulfide 749 749 3
Hydrogen fluoride 729 729
1,2,4-Trimethylbenzene 223 223
m-Xylene 211 211
Naphthalene 154 154 23 ♦ Carcinogen
o-Xylene 114 114 1
Chlorine 96 96
p-Xylene 92 92
Lead compounds 84 84 1 2
Styrene 72 72 ♦ Carcinogen
Aluminum oxide (fibrous forms) 47 47
Polycyclic aromatic compounds 5 5 48 ♦ Carcinogen
Mercury compounds 5 4 1 0
Benzo[g,h,i]perylene 2 2
Molybdenum trioxide 1 1 ♦ Carcinogen
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2023

Chemical Total (lbs) Air Water Land Off-Site
Molybdenum trioxide ♦ Carcinogen
Aluminum oxide (fibrous forms)
Tetrachloroethylene 72 ♦ Carcinogen
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 670,528 670,528
n-Hexane 37,677 37,677
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 35,221 35,221
Propylene 22,424 22,424
Benzene 20,788 20,788 11 ♦ Carcinogen
Methanol 17,526 17,526
Diethanolamine 16,973 16,973
Hydrogen sulfide 12,286 11,781 505
Ammonia 12,257 3,486 8,771
Hydrogen cyanide 12,112 12,112
Cyclohexane 11,989 11,989
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 11,190 11,190
Toluene 11,036 11,036 46
1,3-Butadiene 5,923 5,923 ♦ Carcinogen
Xylene (mixed isomers) 4,730 4,730 197
Ethylene 3,616 3,616
Carbonyl sulfide 3,509 3,509
Ethylbenzene 1,518 1,518 22 ♦ Carcinogen
Hydrogen fluoride 1,327 1,327
Carbon disulfide 1,027 1,027 1
Nickel compounds 1,017 324 693 12,082 ♦ Carcinogen
m-Xylene 248 248
Naphthalene 162 162 4 ♦ Carcinogen
1,2,4-Trimethylbenzene 139 139
o-Xylene 134 134 1
Lead compounds 134 134 0 1,367
Chlorine 111 111
p-Xylene 108 108
Styrene 57 57 ♦ Carcinogen
Mercury compounds 8 7 2 29
Polycyclic aromatic compounds 7 7 80 ♦ Carcinogen
Benzo[g,h,i]perylene 2 2
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2022

Chemical Total (lbs) Air Water Land Off-Site
Tetrachloroethylene 112 ♦ Carcinogen
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 1,387,540 1,387,540
n-Hexane 103,390 103,390
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 39,538 39,538
Benzene 22,458 22,458 9 ♦ Carcinogen
Propylene 20,132 20,132
Diethanolamine 16,814 16,814
Hydrogen sulfide 14,726 14,177 549
Hydrogen cyanide 13,273 13,226 47
Cyclohexane 12,513 12,513
Toluene 11,462 11,462 61
Xylene (mixed isomers) 7,823 7,823 171
Methanol 7,131 7,131
1,3-Butadiene 6,306 6,306 ♦ Carcinogen
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 4,345 4,345
Ethylene 4,041 4,041
Carbonyl sulfide 3,697 3,697
Ammonia 3,306 1,510 1,796
Ethylbenzene 1,791 1,791 30 ♦ Carcinogen
Carbon disulfide 1,082 1,082 1
Nickel compounds 900 171 729 3,600 ♦ Carcinogen
m-Xylene 340 340
1,2,4-Trimethylbenzene 316 316
Hydrogen fluoride 288 288
o-Xylene 182 182 1
Naphthalene 158 158 4 ♦ Carcinogen
p-Xylene 147 147
Styrene 118 118 ♦ Carcinogen
Chlorine 105 105
Lead compounds 76 76 1 248
Aluminum oxide (fibrous forms) 9 9
Mercury compounds 6 4 2 0
Polycyclic aromatic compounds 5 5 79 ♦ Carcinogen
Molybdenum trioxide 3 3 ♦ Carcinogen
Benzo[g,h,i]perylene 2 2
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2021

Chemical Total (lbs) Air Water Land Off-Site
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 305,552 305,552
n-Hexane 115,642 115,642
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 29,000 29,000
Hydrogen cyanide 11,227 10,970 257
Hydrogen sulfide 11,190 10,956 234
Propylene 10,500 10,500
Toluene 8,529 8,529 4,224
Ethylene 7,800 7,800
Ammonia 7,605 2,592 5,013
Benzene 7,253 7,253 759 ♦ Carcinogen
Methanol 5,522 5,522
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 4,534 4,534
1,3-Butadiene 3,984 3,984 ♦ Carcinogen
Xylene (mixed isomers) 3,948 3,948 264
Carbonyl sulfide 3,608 3,608
Cyclohexane 2,963 2,963
Ethylbenzene 2,065 2,065 53 ♦ Carcinogen
Carbon disulfide 1,056 1,056
Nickel compounds 748 26 722 ♦ Carcinogen
Diethanolamine 450 450
1,2,4-Trimethylbenzene 363 363
Hydrogen fluoride 275 275
m-Xylene 193 193
p-Xylene 184 184
Naphthalene 166 166 ♦ Carcinogen
o-Xylene 106 106
Chlorine 95 95
Lead compounds 87 86 0
Polycyclic aromatic compounds 81 81 ♦ Carcinogen
Styrene 37 37 ♦ Carcinogen
Mercury compounds 8 6 2
Benzo[g,h,i]perylene 4 4
Aluminum oxide (fibrous forms) 2 2
Molybdenum trioxide 1 1 ♦ Carcinogen
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen
Tetrachloroethylene 0 0 ♦ Carcinogen

2020

Chemical Total (lbs) Air Water Land Off-Site
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 702,751 702,751
n-Hexane 86,020 86,020
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 67,000 67,000
Benzene 20,142 20,142 421 ♦ Carcinogen
Ammonia 17,394 15,060 2,334
Cyclohexane 12,773 12,773
Propylene 12,100 12,100
Hydrogen sulfide 11,545 11,438 107
Toluene 10,464 10,464 11,441
Hydrogen cyanide 7,950 7,710 240
Methanol 5,281 5,281
Xylene (mixed isomers) 5,274 5,274 742
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 4,703 4,703
1,3-Butadiene 4,028 4,028 ♦ Carcinogen
Ethylene 3,300 3,300
Carbonyl sulfide 2,961 2,961
Ethylbenzene 1,332 1,332 144 ♦ Carcinogen
Nickel compounds 812 40 772 ♦ Carcinogen
Tetrachloroethylene 803 803 ♦ Carcinogen
Carbon disulfide 626 626
Diethanolamine 604 604
1,2,4-Trimethylbenzene 290 290
Hydrogen fluoride 235 235
m-Xylene 209 209
Naphthalene 158 158 ♦ Carcinogen
o-Xylene 112 112
Lead compounds 99 98 1 4,323
Chlorine 93 93
p-Xylene 90 90 1
Polycyclic aromatic compounds 82 82 ♦ Carcinogen
Styrene 77 77 2 ♦ Carcinogen
Aluminum oxide (fibrous forms) 9 9
Mercury compounds 9 7 2 1
Benzo[g,h,i]perylene 4 4
Molybdenum trioxide 3 3 ♦ Carcinogen
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2019

Chemical Total (lbs) Air Water Land Off-Site
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 658,575 658,575
Propylene 12,400 12,400
Carbonyl sulfide 3,156 3,156
Carbon disulfide 667 667
Diethanolamine 593 593
Hydrogen fluoride 230 230
Polycyclic aromatic compounds 78 78 ♦ Carcinogen

2018

Chemical Total (lbs) Air Water Land Off-Site
Vanadium compounds
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 583,645 583,645
n-Hexane 123,372 123,372
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 87,000 87,000
Ammonia 40,399 36,060 4,339
Hydrogen sulfide 25,344 25,080 264
Hydrogen cyanide 20,506 20,360 146
Diethanolamine 16,500 16,500
Propylene 15,400 15,400
Cyclohexane 13,300 13,300
Benzene 12,400 12,400 1,029 ♦ Carcinogen
Toluene 10,700 10,700 9,605
Xylene (mixed isomers) 8,350 8,350 606
Methanol 7,075 7,075
Ethylene 4,300 4,300
Carbonyl sulfide 3,071 3,071
1,3-Butadiene 3,060 3,060 ♦ Carcinogen
Ethylbenzene 1,650 1,650 121 ♦ Carcinogen
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 1,106 1,106
Nickel compounds 770 38 732 ♦ Carcinogen
Tetrachloroethylene 704 704 ♦ Carcinogen
Carbon disulfide 649 649
1,2,4-Trimethylbenzene 308 308
Naphthalene 210 210 ♦ Carcinogen
m-Xylene 207 207
Hydrogen fluoride 195 195
Chlorine 168 168
o-Xylene 110 110
Lead compounds 104 103 1 325
p-Xylene 90 90
Polycyclic aromatic compounds 79 79 ♦ Carcinogen
Styrene 65 65 ♦ Carcinogen
Mercury compounds 9 7 2 2
Benzo[g,h,i]perylene 6 6
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen
Molybdenum trioxide 0 0 ♦ Carcinogen

2017

Chemical Total (lbs) Air Water Land Off-Site
Vanadium compounds
Molybdenum trioxide ♦ Carcinogen
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 600,996 600,996
n-Hexane 105,420 105,420
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 80,000 80,000
Ammonia 55,313 52,050 3,263
Hydrogen cyanide 28,510 28,350 160
Hydrogen sulfide 24,533 24,298 235 24
Diethanolamine 16,300 16,300
Propylene 13,609 13,609
Benzene 11,500 11,500 7,679 ♦ Carcinogen
Cyclohexane 11,100 11,100
Toluene 10,800 10,800 7,693
Methanol 7,534 7,534
Xylene (mixed isomers) 5,240 5,240
Ethylene 5,171 5,171
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 4,686 4,686
1,3-Butadiene 3,060 3,060 ♦ Carcinogen
Carbonyl sulfide 3,057 3,057
Ethylbenzene 1,240 1,240 99 ♦ Carcinogen
Tetrachloroethylene 1,000 1,000 ♦ Carcinogen
Nickel compounds 827 17 810 ♦ Carcinogen
Carbon disulfide 646 646
1,2,4-Trimethylbenzene 386 386
Naphthalene 293 293 21 ♦ Carcinogen
Lead compounds 252 251 1 1,192
o-Xylene 240 240
m-Xylene 200 200
Hydrogen fluoride 158 158
Chlorine 150 150
Styrene 115 115 ♦ Carcinogen
p-Xylene 100 100
Polycyclic aromatic compounds 71 71 ♦ Carcinogen
Mercury compounds 11 9 2 0
Benzo[g,h,i]perylene 5 5
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2016

Chemical Total (lbs) Air Water Land Off-Site
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 583,117 583,117
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 83,000 83,000
Ammonia 54,791 49,090 5,701
Hydrogen cyanide 31,682 31,600 82
n-Hexane 29,000 29,000
Hydrogen sulfide 24,975 24,784 191 10
Diethanolamine 17,800 17,800
Toluene 16,100 16,100 8,972
Propylene 15,100 15,100
Benzene 12,100 12,100 1,153 ♦ Carcinogen
Cyclohexane 11,200 11,200
Methanol 7,534 7,534 10
Ethylene 5,600 5,600
Xylene (mixed isomers) 4,820 4,820 584
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 4,491 4,491
Carbonyl sulfide 3,166 3,166
1,3-Butadiene 2,860 2,860 ♦ Carcinogen
Ethylbenzene 1,400 1,400 114 ♦ Carcinogen
Tetrachloroethylene 1,000 1,000 ♦ Carcinogen
m-Xylene 900 900
Carbon disulfide 669 669
Vanadium compounds 572 572
o-Xylene 560 560
Naphthalene 555 555 9 ♦ Carcinogen
Nickel compounds 554 46 508 ♦ Carcinogen
p-Xylene 310 310
1,2,4-Trimethylbenzene 286 286
Hydrogen fluoride 230 230
Lead compounds 177 176 1 6
Chlorine 150 150
Styrene 74 74 ♦ Carcinogen
Polycyclic aromatic compounds 71 71 ♦ Carcinogen
Mercury compounds 11 9 2 0
Benzo[g,h,i]perylene 7 7
Molybdenum trioxide 2 2 1,459 ♦ Carcinogen
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2015

Chemical Total (lbs) Air Water Land Off-Site
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 881,141 881,141
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 82,000 82,000
Ammonia 50,554 46,180 4,374
Hydrogen cyanide 33,562 33,000 562
n-Hexane 29,000 29,000 1
Hydrogen sulfide 24,171 23,981 190 3
Propylene 17,900 17,900
Diethanolamine 17,000 17,000
Toluene 17,000 17,000 4,072
Benzene 13,200 13,200 851 ♦ Carcinogen
Cyclohexane 11,400 11,400
Methanol 6,776 6,776 5
Ethylene 5,300 5,300
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 5,274 5,274
Xylene (mixed isomers) 4,990 4,990 294
1,3-Butadiene 3,660 3,660 ♦ Carcinogen
Carbonyl sulfide 3,157 3,157
Ethylbenzene 1,620 1,620 56 ♦ Carcinogen
Tetrachloroethylene 976 976 ♦ Carcinogen
1,2,4-Trimethylbenzene 820 820
Carbon disulfide 667 667
Naphthalene 569 569 2 ♦ Carcinogen
Nickel compounds 549 43 506 ♦ Carcinogen
Vanadium compounds 485 485
m-Xylene 400 400
Chlorine 372 372
o-Xylene 266 266
Hydrogen fluoride 208 208
p-Xylene 197 197
Lead compounds 104 104 1 1,441
Styrene 88 88 ♦ Carcinogen
Polycyclic aromatic compounds 71 71 ♦ Carcinogen
Mercury compounds 11 9 2 0
Benzo[g,h,i]perylene 7 7
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

Waste Management & Recycling

How this facility manages toxic chemicals beyond direct releases — through recycling, energy recovery, and on-site or off-site treatment. Data from the most recent TRI reporting year. Quantities in pounds.

Chemical Released Recycled Energy Recovery Treated
Propylene 14,786
Tetrachloroethylene 152
Benzene 519,475
Toluene 32 7,476
Ethylbenzene 40
1,3-Butadiene 9,879
Xylene (mixed isomers) 221
Nickel compounds 224
n-Hexane 256
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 14,850
Chlorine 3,036
Ammonia 44,787
Hydrogen sulfide 337,223
Ethylene 8,318

Off-Site Transfer Destinations

Facilities to which toxic chemicals were transferred for disposal, recycling, energy recovery, or treatment during the most recent TRI reporting year. Quantities in pounds.

Destination Chemical Disposal Recycling Energy Rec. Treatment
US ECOLOGY TEXAS
ROBSTOWN, TX
Lead compounds
SABIN METAL WEST CORPORATION
WILLISTON, ND
Mercury compounds
US ECOLOGY TEXAS
ROBSTOWN, TX
Mercury compounds
SYSTECH ENVIRONMENTAL CORPORATION
FREDONIA, KS
Mercury compounds 0
US ECOLOGY TEXAS
ROBSTOWN, TX
o-Xylene
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
o-Xylene 1
US ECOLOGY TEXAS
ROBSTOWN, TX
Polycyclic aromatic compounds 2
BLUE RIDGE LANDFILL
FRESNO, TX
Polycyclic aromatic compounds 5
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Polycyclic aromatic compounds 41
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Benzene 7
BLUE RIDGE LANDFILL
FRESNO, TX
Benzene 4
US ECOLOGY TEXAS
ROBSTOWN, TX
Benzene 2
SYSTECH ENVIRONMENTAL CORPORATION
FREDONIA, KS
Benzene
FORT BEND REGIONAL LANDFILL
NEEDVILLE, TX
Benzene 2
US ECOLOGY TEXAS
ROBSTOWN, TX
m-Xylene
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
m-Xylene
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Mercury compounds
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Lead compounds 2
SYSTECH ENVIRONMENTAL CORPORATION
FREDONIA, KS
Lead compounds
BLUE RIDGE LANDFILL
FRESNO, TX
Naphthalene 5
US ECOLOGY TEXAS
ROBSTOWN, TX
Naphthalene 13
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Naphthalene 5
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Nickel compounds 2,843
SABIN METAL WEST CORPORATION
WILLISTON, ND
Nickel compounds 224
US ECOLOGY TEXAS
ROBSTOWN, TX
Nickel compounds 19
SYSTECH ENVIRONMENTAL CORPORATION
FREDONIA, KS
Tetrachloroethylene 152
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Carbon disulfide 2
BLUE RIDGE LANDFILL
FRESNO, TX
Carbon disulfide 1
US ECOLOGY TEXAS
ROBSTOWN, TX
Carbon disulfide
SYSTECH ENVIRONMENTAL CORPORATION
FREDONIA, KS
Ethylbenzene 40
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Ethylbenzene 3
US ECOLOGY TEXAS
ROBSTOWN, TX
Ethylbenzene 6
BLUE RIDGE LANDFILL
FRESNO, TX
Toluene 5
SYSTECH ENVIRONMENTAL CORPORATION
FREDONIA, KS
Toluene 32
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Toluene 8
US ECOLOGY TEXAS
ROBSTOWN, TX
Toluene 52
US ECOLOGY TEXAS
ROBSTOWN, TX
Xylene (mixed isomers)
SYSTECH ENVIRONMENTAL CORPORATION
FREDONIA, KS
Xylene (mixed isomers) 221
COASTAL PLAINS RENEWABLE ENERGY PLANT
ALVIN, TX
Xylene (mixed isomers) 3
BLUE RIDGE LANDFILL
FRESNO, TX
Xylene (mixed isomers) 8

Compliance Violations

Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.

Program Type Violation Date Return to Compliance Status
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open
caa Linked to Viol. Below Open

Discharge Limit Exceedances

Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.

Pollutant Violation Reported Limit Exceedance Period Status
pH range excursions, > 60 minutes DMR, Limited - Numeric Violation 0.03 occur/d 0.00 +2,147,483,650% Jan 2025 Open
Carbon, tot organic [TOC] DMR, Limited - Numeric Violation 145.00 mg/L 75.00 +93% Jan 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 256.74 kg/d 251.97 +2% Sep 2024 Open
Oil & Grease DMR, Limited - Numeric Violation 18.20 mg/L 10.00 +82% Sep 2024 Open
Oil & Grease DMR, Limited - Numeric Violation 36.40 mg/L 15.00 +143% Sep 2024 Open
Carbon, tot organic [TOC] DMR, Limited - Numeric Violation 76.40 mg/L 75.00 +2% Jun 2024 Open
Enterococci DMR, Limited - Numeric Violation 89.40 MPN/100mL 35.00 +155% May 2024 Open
Enterococci DMR, Limited - Numeric Violation 800.00 MPN/100mL 104.00 +669% May 2024 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 365.56 kg/d 251.97 +45% Dec 2023 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 1,131.78 kg/d 1,049.15 +8% Dec 2023 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 264.32 kg/d 251.97 +5% Jun 2023 Open
Solids, total suspended DMR, Limited - Numeric Violation 2,515.43 kg/d 2,485.20 +1% Mar 2023 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.01 mg/L 0.01 +18% Mar 2022 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.04 mg/L 0.02 +94% Feb 2022 Open
Solids, total suspended DMR, Limited - Numeric Violation 2,963.71 kg/d 2,485.20 +19% Feb 2022 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.01 mg/L 0.01 +64% Feb 2022 Resolved
Solids, total suspended DMR, Limited - Numeric Violation 1,324.32 kg/d 1,228.98 +8% Feb 2022 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.02 mg/L 0.01 +82% Dec 2021 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.04 mg/L 0.02 +94% Dec 2021 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.02 mg/L 0.01 +121% Nov 2021 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.04 mg/L 0.02 +99% Nov 2021 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.02 mg/L 0.02 +8% Oct 2021 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.01 mg/L 0.01 +32% Oct 2021 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.03 mg/L 0.02 +41% Aug 2021 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.04 mg/L 0.01 +345% Jul 2021 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.07 mg/L 0.02 +302% Jul 2021 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.09 mg/L 0.02 +373% Jun 2021 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.04 mg/L 0.01 +310% Jun 2021 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.09 mg/L 0.02 +396% May 2021 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.02 mg/L 0.01 +180% May 2021 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.03 mg/L 0.02 +57% Oct 2020 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.01 mg/L 0.01 +29% Oct 2020 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.01 mg/L 0.01 +18% Sep 2020 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.03 mg/L 0.02 +54% Sep 2020 Resolved
pH range excursions, > 60 minutes DMR, Limited - Numeric Violation 0.03 occur/d 0.00 +2,147,483,650% Aug 2020 Open
Flow, in conduit or thru treatment plant DMR, Limited - Numeric Violation 1.40 MGD 0.64 +119% Aug 2020 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.02 mg/L 0.01 +170% Jul 2020 Resolved
Flow, in conduit or thru treatment plant DMR, Limited - Numeric Violation 1.43 MGD 0.64 +123% Jul 2020 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.06 mg/L 0.02 +215% Jul 2020 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.08 mg/L 0.02 +335% Jun 2020 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.04 mg/L 0.01 +333% Jun 2020 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.01 mg/L 0.01 +11% Apr 2020 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.07 mg/L 0.02 +270% Mar 2020 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.02 mg/L 0.01 +139% Mar 2020 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.02 mg/L 0.01 +73% Jan 2020 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.03 mg/L 0.02 +61% Jan 2020 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.06 mg/L 0.02 +201% Dec 2019 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.02 mg/L 0.01 +99% Dec 2019 Resolved
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.07 mg/L 0.02 +280% Nov 2019 Open
Cyanide, free [amenable to chlorination] DMR, Limited - Numeric Violation 0.04 mg/L 0.01 +335% Nov 2019 Resolved

Enforcement Actions

Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.

Date Out of Range
Clean Air Act · Case 3604288047
Date Out of Range
Clean Air Act · Case 3601761144
Date Out of Range
Clean Air Act · Case 3604052347
Date Out of Range
Clean Air Act · Case 3604641811
Administrative - Formal
Clean Air Act · Case 3603543546 · Sep 30, 2025
$13,125
Administrative - Formal
Clean Air Act · Case 3602914097 · Oct 1, 2024
$93,729
WRITTEN INFORMAL
RCRA (Hazardous Waste) · Case RCRA-TXD048210645-11 · Aug 28, 2024
WRITTEN INFORMAL
RCRA (Hazardous Waste) · Case RCRA-TXD048210645-12 · Aug 28, 2024
Administrative - Formal
Clean Air Act · Case 3602860443 · Aug 22, 2023
$45,850
Administrative - Formal
Clean Air Act · Case 3602860446 · Jul 27, 2023
$54,000
Administrative - Formal
Clean Air Act · Case 3602860393 · Jul 27, 2023
$63,451
Administrative - Formal
Clean Air Act · Case 3602718026 · Jul 27, 2023
$44,450
Administrative - Formal
Clean Air Act · Case 3602860388 · Jul 27, 2023
$41,703
Administrative - Formal
Clean Air Act · Case 3602480440 · Dec 20, 2022
$100,403
Administrative - Formal
Clean Air Act · Case 3602422258 · Jul 7, 2022
$49,862
Administrative - Formal
Clean Air Act · Case 3602375101 · Jan 27, 2022
$12,308
Administrative - Formal
Clean Air Act · Case 3602092284 · Apr 6, 2021
$35,923
Administrative - Formal
Clean Air Act · Case 3601760827 · Jan 28, 2020
$6,300
State CWA Penalty AO
Clean Water Act · Case TX-2018-0923-IWD-E · Sep 16, 2019
$30,000
Administrative - Formal
· Case 06-2019-1734 · Dec 7, 2018

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