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

MONROE ENERGY, LLC - TRAINER REFINERY

Quick Summary

  • Released 488,369 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 $98,761 in total penalties since records began.
  • Reports releases of chemicals classified as known or probable carcinogens.
Address
4101 POST ROAD
TRAINER, PA 19061
View on map ↗
County
DELAWARE County
Industry
Manufacturing
NAICS (North American Industry Classification)
324110
Inspections
20 · last Sep 25, 2025
Total Penalties
$98,761 · last Jan 22, 2024
Registry ID
110000336440

How This Compares

#14 of 920 TRI reporters in PA
#387 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.

12
Air (CAA)
Qtrs Non-Compliant
9
Water (CWA)
Qtrs Non-Compliant
0
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) -45% overall
Year Total Releases (lbs) vs Prior Year
2015 448,841
2016 451,652 +1%
2017 488,369 +8%
2018 532,466 +9%
2019 6,759 -99%
2020 427,222 +6221%
2021 429,956 +1%
2022 431,848 0%
2023 241,414 -44%
2024 246,085 +2%

2024

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Xylene (mixed isomers) 55,153 55,128 25 5
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 42,039 42,039 126
n-Hexane 39,525 39,520 5
Toluene 30,007 29,996 11 11
Benzene 27,552 27,550 2 99 ♦ Carcinogen
1,2,4-Trimethylbenzene 24,863 24,857 6 3
Ammonia 6,388 3,634 2,754 1,180
Ethylbenzene 5,124 5,122 2 1 ♦ Carcinogen
Naphthalene 4,502 4,496 6 121 ♦ Carcinogen
Propylene 3,346 3,346
Hydrogen sulfide 2,280 2,280
Tetrachloroethylene 983 982 1 ♦ Carcinogen
Cyclohexane 931 929 2
Cumene 642 642 ♦ Carcinogen
Carbon disulfide 510 510
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 483 483
Phenol 396 380 16
Polycyclic aromatic compounds 311 102 208 14 ♦ Carcinogen
Methanol 229 89 140
Nickel 215 215 21,365 ♦ Carcinogen
Ethylene 153 153
Hydrogen fluoride 91 91
Anthracene 90 90 7
Antimony 80 80 162
Phenanthrene 59 59 93
Hydrogen cyanide 42 42
Lead compounds 27 20 8 78
Mercury compounds 25 25 2
1,3-Butadiene 12 12 ♦ Carcinogen
Carbonyl sulfide 12 12
Cobalt compounds 11 11 ♦ Carcinogen
Molybdenum trioxide 2 2 92,546 ♦ Carcinogen
Benzo[g,h,i]perylene 1 1 0
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2023

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Xylene (mixed isomers) 55,439 55,423 16 5
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 45,127 45,127 1,448
n-Hexane 35,804 35,804
Toluene 27,025 27,022 3 4
Benzene 26,139 26,139 261 ♦ Carcinogen
1,2,4-Trimethylbenzene 25,181 25,179 2 4
Ammonia 6,309 3,798 2,511 1,119
Ethylbenzene 4,906 4,906 3 ♦ Carcinogen
Naphthalene 4,507 4,501 6 284 ♦ Carcinogen
Propylene 2,860 2,860
Hydrogen sulfide 2,312 2,312
Cyclohexane 911 911
Tetrachloroethylene 757 756 1 ♦ Carcinogen
Cumene 739 739 ♦ Carcinogen
Methanol 732 732
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 508 508
Carbon disulfide 462 462
Polycyclic aromatic compounds 382 102 279 22 ♦ Carcinogen
Phenol 355 340 15
Ethylene 213 213
Nickel 199 199 12,917 ♦ Carcinogen
Hydrogen fluoride 190 190
Anthracene 83 83 10
Antimony 76 76 319
Phenanthrene 63 63 132
Hydrogen cyanide 33 33
Lead compounds 29 19 10 141
Mercury compounds 24 24 5
Carbonyl sulfide 20 20
1,3-Butadiene 15 15 ♦ Carcinogen
Cobalt compounds 9 9 ♦ Carcinogen
Molybdenum trioxide 4 4 47,163 ♦ Carcinogen
Benzo[g,h,i]perylene 1 1 0
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2022

Chemical Total (lbs) Air Water Land Off-Site
Ethylene glycol
Diethanolamine
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 233,242 233,242 3,087
Xylene (mixed isomers) 51,324 51,312 12 22
n-Hexane 37,584 37,584 320
Toluene 28,838 28,836 2 547
Benzene 27,691 27,691 44 ♦ Carcinogen
1,2,4-Trimethylbenzene 24,296 24,294 2 5
Ammonia 9,071 3,888 5,183 1,036
Ethylbenzene 4,987 4,987 4 ♦ Carcinogen
Naphthalene 4,381 4,377 4 75 ♦ Carcinogen
Propylene 2,884 2,884
Hydrogen sulfide 2,270 2,270
Tetrachloroethylene 917 916 1 ♦ Carcinogen
Cyclohexane 878 878
Cumene 616 616 ♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 592 592
Carbon disulfide 477 477
Phenol 417 403 14
Nickel 310 310 23,583 ♦ Carcinogen
Polycyclic aromatic compounds 302 103 200 29 ♦ Carcinogen
Hydrogen fluoride 189 189
Ethylene 143 143
Antimony 123 123 607
Anthracene 86 86 10
Phenanthrene 65 65 126
Lead compounds 47 27 20 58
Hydrogen cyanide 43 43
Mercury compounds 25 25 7
Cobalt compounds 18 18 ♦ Carcinogen
Carbonyl sulfide 14 14
1,3-Butadiene 13 13 ♦ Carcinogen
Molybdenum trioxide 4 4 97,850 ♦ Carcinogen
Benzo[g,h,i]perylene 1 1 1
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2021

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 222,295 222,295 6,469
Xylene (mixed isomers) 59,081 59,070 11 18
n-Hexane 36,921 36,921 2
1,2,4-Trimethylbenzene 31,427 31,425 2 15
Benzene 24,095 24,095 362 ♦ Carcinogen
Toluene 23,938 23,936 2 5
Ammonia 9,553 4,510 5,043 500
Naphthalene 5,032 5,027 5 452 ♦ Carcinogen
Ethylbenzene 4,694 4,694 3 ♦ Carcinogen
Propylene 2,794 2,794
Hydrogen fluoride 2,440 2,440
Hydrogen sulfide 2,308 2,308
Cyclohexane 908 908
Cumene 814 814 ♦ Carcinogen
Methanol 734 262 472
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 694 694
Carbon disulfide 442 442
Nickel 328 328 36,767 ♦ Carcinogen
Polycyclic aromatic compounds 322 103 219 62 ♦ Carcinogen
Phenol 316 313 3
Tetrachloroethylene 235 235 ♦ Carcinogen
Ethylene 155 155
Antimony 109 109 478
Anthracene 81 81 34
Phenanthrene 67 67 433
Lead compounds 55 39 16 243
Hydrogen cyanide 37 37
Mercury compounds 24 24 12
Cobalt compounds 20 20 ♦ Carcinogen
Carbonyl sulfide 17 17
1,3-Butadiene 13 13 ♦ Carcinogen
Molybdenum trioxide 4 4 156,483 ♦ Carcinogen
Benzo[g,h,i]perylene 1 1
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2020

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 214,421 214,421 4,626
Xylene (mixed isomers) 55,529 55,514 15 46
n-Hexane 38,594 38,592 2 372
Benzene 28,884 28,883 1 617 ♦ Carcinogen
Toluene 28,788 28,783 5 648
1,2,4-Trimethylbenzene 26,439 26,436 3 5
Ammonia 9,768 5,090 4,678 548
Ethylbenzene 5,518 5,517 1 7 ♦ Carcinogen
Naphthalene 4,825 4,819 6 48 ♦ Carcinogen
Propylene 3,360 3,360
Hydrogen fluoride 3,045 3,045
Hydrogen sulfide 2,578 2,578
Cyclohexane 976 975 1
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 803 803
Tetrachloroethylene 793 793 ♦ Carcinogen
Cumene 698 698 ♦ Carcinogen
Carbon disulfide 476 476
Polycyclic aromatic compounds 395 105 291 19 ♦ Carcinogen
Phenol 383 368 15
Nickel 272 272 349 ♦ Carcinogen
Ethylene 269 269
Antimony 89 89 476
Anthracene 88 88 10
Phenanthrene 79 79 25
Lead compounds 58 34 24 78
Hydrogen cyanide 37 37
Mercury compounds 25 25 5
1,3-Butadiene 18 18 ♦ Carcinogen
Carbonyl sulfide 12 12
Benzo[g,h,i]perylene 1 1
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2019

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Naphthalene 5,707 5,703 4 319 ♦ Carcinogen
Carbon disulfide 528 528
Nickel 311 311 9,351 ♦ Carcinogen
Antimony 111 111 306
Lead compounds 53 32 21 332
1,3-Butadiene 26 26 ♦ Carcinogen
Molybdenum trioxide 19 19 83,466 ♦ Carcinogen
Benzo[g,h,i]perylene 3 3 0

2018

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 259,900 259,900 2,020
Xylene (mixed isomers) 57,610 57,381 229 29
1,2,4-Trimethylbenzene 55,104 55,003 101 4
n-Hexane 52,144 52,017 127 240
Benzene 31,680 31,633 47 4 ♦ Carcinogen
Toluene 30,491 30,277 214 400
Ammonia 14,223 8,487 5,736 710
Ethylbenzene 6,521 6,475 46 2 ♦ Carcinogen
Naphthalene 6,353 6,326 27 77 ♦ Carcinogen
Hydrogen fluoride 4,155 4,155
Propylene 3,219 3,216 3
Hydrogen sulfide 2,843 2,843
Tetrachloroethylene 1,890 1,890 ♦ Carcinogen
Cyclohexane 1,145 1,092 53 0
Methanol 1,092 543 549
Cumene 784 772 12 ♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 725 725
Certain glycol ethers 634 213 421
Carbon disulfide 488 488
Phenol 439 428 11
Ethylene 280 280
Nickel 185 185 9,214 ♦ Carcinogen
Polycyclic aromatic compounds 168 105 63 19 ♦ Carcinogen
Anthracene 92 92 9
Phenanthrene 77 73 4 119
Antimony 61 61 2,267
Hydrogen cyanide 46 46
Lead compounds 42 17 25 276
Mercury compounds 22 22 5
Carbonyl sulfide 20 20
Molybdenum trioxide 16 16 78,745 ♦ Carcinogen
1,3-Butadiene 15 15 ♦ Carcinogen
Benzo[g,h,i]perylene 1 1 0 0
Dioxin and dioxin-like compounds 0 0 ♦ Carcinogen

2017

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 216,114 216,114 2,020
n-Hexane 60,154 60,119 35 180
Xylene (mixed isomers) 55,784 55,719 65 3,034
1,2,4-Trimethylbenzene 51,237 51,208 29 4
Toluene 32,541 32,482 59 535
Benzene 28,151 28,138 13 129 ♦ Carcinogen
Ammonia 14,612 9,821 4,791 912
Naphthalene 6,210 6,202 8 49 ♦ Carcinogen
Ethylbenzene 6,036 6,023 13 605 ♦ Carcinogen
Hydrogen fluoride 4,739 4,739
Propylene 3,637 3,636 1
Hydrogen sulfide 3,042 3,042
Methanol 1,121 572 549 4,000
Cyclohexane 1,065 1,051 14 0
Cumene 801 798 3 ♦ Carcinogen
Tetrachloroethylene 620 620 ♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 490 490
Phenol 463 456 7
Carbon disulfide 447 447
Ethylene 284 284
Nickel 257 257 23,937 ♦ Carcinogen
Polycyclic aromatic compounds 169 106 63 17 ♦ Carcinogen
Anthracene 85 85 9
Antimony 85 85 252
Phenanthrene 72 71 1 119
Hydrogen cyanide 46 46
Lead compounds 39 18 20 209
Mercury compounds 25 25 1
Molybdenum trioxide 18 18 105,012 ♦ Carcinogen
1,3-Butadiene 15 15 ♦ Carcinogen
Carbonyl sulfide 9 9
Benzo[g,h,i]perylene 1 1 0 0
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2016

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 216,922 216,922 2,020
n-Hexane 62,207 62,207 840
Xylene (mixed isomers) 42,698 42,695 3 3
1,2,4-Trimethylbenzene 38,094 38,093 1 8
Toluene 25,978 25,977 1 1,928
Benzene 20,975 20,975 9 ♦ Carcinogen
Ammonia 18,358 13,655 4,703 525
Ethylbenzene 5,412 5,412 1 ♦ Carcinogen
Hydrogen fluoride 4,022 4,022
Naphthalene 3,910 3,909 1 61 ♦ Carcinogen
Propylene 3,504 3,504
Hydrogen sulfide 3,006 3,006
Methanol 1,192 643 549
Certain glycol ethers 1,135 511 624
Cyclohexane 786 786
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 671 671
Cumene 593 593 ♦ Carcinogen
Tetrachloroethylene 541 541 ♦ Carcinogen
Carbon disulfide 413 413
Phenol 372 366 6
Ethylene 198 198
Polycyclic aromatic compounds 167 105 63 24 ♦ Carcinogen
Nickel 167 167 470 ♦ Carcinogen
Anthracene 76 76 6
Phenanthrene 73 73 66
Antimony 58 58 367
Hydrogen cyanide 36 36
Lead compounds 30 15 15 62
Mercury compounds 24 24 9
Carbonyl sulfide 18 18
1,3-Butadiene 11 11 ♦ Carcinogen
Molybdenum trioxide 4 4 ♦ Carcinogen
Benzo[g,h,i]perylene 1 1 1
Dioxin and dioxin-like compounds 1 1 ♦ Carcinogen

2015

Chemical Total (lbs) Air Water Land Off-Site
Diethanolamine
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 227,465 227,465 2,020
n-Hexane 56,606 56,595 11 240
Xylene (mixed isomers) 43,934 43,915 19 3
1,2,4-Trimethylbenzene 36,042 36,033 9 3
Toluene 22,862 22,845 17 591
Benzene 20,195 20,191 4 6 ♦ Carcinogen
Ammonia 17,066 9,663 7,403 2,432
Ethylbenzene 4,944 4,940 4 ♦ Carcinogen
Propylene 3,539 3,539
Hydrogen fluoride 3,268 3,268
Hydrogen sulfide 2,480 2,480
Naphthalene 2,063 2,060 3 458 ♦ Carcinogen
Cumene 1,441 1,440 1 ♦ Carcinogen
Tetrachloroethylene 1,283 1,283 ♦ Carcinogen
Cyclohexane 1,054 1,050 4
Methanol 971 422 549
Certain glycol ethers 904 581 323
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 740 740
Ethylene 707 707
Nickel 336 336 322 ♦ Carcinogen
Phenol 296 293 3
Polycyclic aromatic compounds 134 103 31 15 ♦ Carcinogen
Antimony 103 103 185
Anthracene 96 96 6
Phenanthrene 62 62 88
Lead compounds 61 41 20 110
Carbon disulfide 56 56
Carbonyl sulfide 41 41
Hydrogen cyanide 36 36
1,3-Butadiene 31 31 ♦ Carcinogen
Mercury compounds 23 23 1
Benzo[g,h,i]perylene 1 1 0
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
Xylene (mixed isomers) 3,902
Tetrachloroethylene 71
Phenanthrene 93
Toluene 2 1,344
Hydrogen cyanide 41,681
Cyclohexane 251
Phenol 18,347
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 113
Ammonia 11,510
Hydrogen fluoride 727,466
Mercury compounds 0
Propylene 5,045
Ethylene 7,612
Hydrogen sulfide 24,326
Polycyclic aromatic compounds 0 3,160
Carbon disulfide 16
Nickel 20,749
Ethylbenzene 204
Diethanolamine 44,300
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 2,465,031
Naphthalene 93 2,100
Lead compounds 1
1,3-Butadiene 208
Benzene 96 566
Molybdenum trioxide 92,546
Cumene 12
1,2,4-Trimethylbenzene 1,088
Carbonyl sulfide 1,122
n-Hexane 593
Methanol 6,848
Anthracene 7

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
EURECAT US (WAS TRICAT INC.)
MCALESTER, OK
Molybdenum trioxide 92,546
CH, SARNIA
CORUNNA
1,2,4-Trimethylbenzene
CONESTOGA LANDFILL
MORGANTOWN, PA
1,2,4-Trimethylbenzene
ROSS INCINERATION SERVICES INC
GRAFTON, OH
1,2,4-Trimethylbenzene 3
CH, SARNIA
CORUNNA
Polycyclic aromatic compounds 0
CONESTOGA LANDFILL
MORGANTOWN, PA
Polycyclic aromatic compounds 0
REPUBLIC MODERN LANDFILL
BERKS, PA
Polycyclic aromatic compounds 1
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Polycyclic aromatic compounds 13
STABLEX CANADA
BLAINVILLE
Polycyclic aromatic compounds 0
CH, SARNIA
CORUNNA
Phenanthrene 1
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Phenanthrene 92
CH, SARNIA
CORUNNA
Mercury compounds 0
CONESTOGA LANDFILL
MORGANTOWN, PA
Mercury compounds 0
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Mercury compounds 2
SABIN METAL WEST CORPORATION
WILLISTON, ND
Mercury compounds 0
STABLEX CANADA
BLAINVILLE
Mercury compounds 0
CONESTOGA LANDFILL
MORGANTOWN, PA
Lead compounds 14
EURECAT US (WAS TRICAT INC.)
MCALESTER, OK
Lead compounds 1
LONE STAR GREENCASTLE WDF
GREENCASTLE, IN
Lead compounds 38
SPRING GROVE RESOURCE RECOVERY INC
CINCINNATI, OH
Lead compounds
CH, SARNIA
CORUNNA
Ethylbenzene
CONESTOGA LANDFILL
MORGANTOWN, PA
Ethylbenzene
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Ethylbenzene 1
STABLEX CANADA
BLAINVILLE
Ethylbenzene
CH, SARNIA
CORUNNA
Anthracene
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Anthracene 7
CH, SARNIA
CORUNNA
n-Hexane
ROSS INCINERATION SERVICES INC
GRAFTON, OH
n-Hexane
STABLEX CANADA
BLAINVILLE
Benzene
LONE STAR GREENCASTLE WDF
GREENCASTLE, IN
Benzene 96
CH, SARNIA
CORUNNA
Benzene
CONESTOGA LANDFILL
MORGANTOWN, PA
Benzene
EURECAT US (WAS TRICAT INC.)
MCALESTER, OK
Benzene 3
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Benzene
CH, SARNIA
CORUNNA
Toluene 1
CONESTOGA LANDFILL
MORGANTOWN, PA
Toluene 6
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Toluene 2
STABLEX CANADA
BLAINVILLE
Toluene 2
REPUBLIC MODERN LANDFILL
BERKS, PA
Benzo[g,h,i]perylene 0
CH, SARNIA
CORUNNA
Xylene (mixed isomers)
CONESTOGA LANDFILL
MORGANTOWN, PA
Xylene (mixed isomers) 2
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Xylene (mixed isomers) 3
CH, SARNIA
CORUNNA
Naphthalene
CONESTOGA LANDFILL
MORGANTOWN, PA
Naphthalene 7
LONE STAR GREENCASTLE WDF
GREENCASTLE, IN
Naphthalene 93
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Naphthalene 21
CONESTOGA LANDFILL
MORGANTOWN, PA
Nickel 196
EURECAT US (WAS TRICAT INC.)
MCALESTER, OK
Nickel 20,749
LONE STAR GREENCASTLE WDF
GREENCASTLE, IN
Nickel 338
CH, SARNIA
CORUNNA
Cyclohexane
ROSS INCINERATION SERVICES INC
GRAFTON, OH
Cyclohexane

Transfers to Publicly-Owned Treatment Works (POTWs)

Toxic chemicals transferred to municipal wastewater treatment plants during the most recent TRI reporting year. Quantities in pounds.

Chemical Transferred (lbs) POTW
Polycyclic aromatic compounds DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Mercury compounds 0 DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Anthracene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Lead compounds 26 DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Ethylbenzene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Toluene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Phenanthrene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Xylene (mixed isomers) DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Naphthalene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Nickel 82 DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
1,3-Butadiene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Benzo[g,h,i]perylene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Antimony 162 DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Hydrogen cyanide DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Cumene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Nitrate compounds (water dissociable; reportable only when in aqueous solution) 126 DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
1,2,4-Trimethylbenzene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Phenol DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Benzene DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Dioxin and dioxin-like compounds DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Ammonia 1,180 DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
n-Hexane DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER
Cyclohexane DELCORA-WESTERN REGIONAL TREATMENT PLANT, CHESTER

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 FRV Jul 31, 2025 Open
caa FRV Apr 2, 2025 Open
caa FRV Sep 5, 2024 Open
caa FRV Nov 7, 2022 Open
caa FRV Aug 22, 2022 Open
caa FRV Aug 4, 2022 Open
caa FRV Apr 12, 2022 Open
caa FRV Dec 13, 2021 Open
caa FRV Nov 30, 2021 Open
cwa WW Storm Water Construction - Failure to properly operate and maintain BMPs Nov 4, 2021 Open
caa HPV Oct 15, 2021 Sep 26, 2022 Resolved
cwa WW Storm Water Construction - Failure to Implement SWPPP/SWMP Aug 5, 2021 Open
caa HPV Mar 3, 2021 Dec 15, 2021 Resolved
caa FRV Nov 13, 2020 Open
caa FRV Nov 3, 2020 Open
caa FRV Oct 29, 2020 Open
caa HPV May 31, 2020 Jun 15, 2020 Resolved
caa HPV Mar 7, 2020 Jun 15, 2020 Resolved
caa FRV Dec 3, 2019 Open
caa FRV Dec 3, 2019 Open
caa FRV May 6, 2019 Open
caa FRV May 2, 2019 Open
caa FRV Mar 28, 2019 Open
caa FRV Mar 28, 2019 Open
rcra Standards for Universal Waste Management: Standards for Small Quantity Handlers Mar 13, 2019 Mar 13, 2019 Resolved
rcra State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements Mar 13, 2019 Mar 20, 2019 Resolved
caa FRV Mar 11, 2019 Open
caa HPV Feb 6, 2019 Apr 22, 2020 Resolved
caa HPV Feb 6, 2019 Apr 22, 2020 Resolved
caa HPV Sep 24, 2018 Jun 20, 2019 Resolved
caa FRV Aug 29, 2018 Open
caa FRV Jul 10, 2018 Open
caa FRV Feb 13, 2018 Open
caa FRV Oct 27, 2017 Open
caa FRV Aug 31, 2017 Open
caa FRV Jul 18, 2017 Open
caa HPV Apr 24, 2017 Mar 29, 2018 Resolved
caa FRV Apr 18, 2017 Open
caa HPV Nov 25, 2016 Apr 21, 2017 Resolved
caa FRV Nov 8, 2016 Open
caa FRV Oct 20, 2016 Open
caa HPV Jun 15, 2016 Apr 21, 2017 Resolved
caa FRV Apr 22, 2016 Open
rcra Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators Jan 25, 2012 Jan 10, 2013 Resolved
rcra Standards for Universal Waste Management: Standards for Small Quantity Handlers Jan 25, 2012 Jan 10, 2013 Resolved
rcra Standards for Universal Waste Management: Standards for Small Quantity Handlers Aug 1, 2011 Jan 10, 2013 Resolved
rcra Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators Aug 1, 2011 Jan 10, 2013 Resolved
rcra State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements Oct 25, 2010 Oct 25, 2010 Resolved
rcra Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators Oct 25, 2010 Oct 25, 2010 Resolved

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
Solids, total suspended DMR, Limited - Numeric Violation 9,961.76 kg/d 7,723.90 +29% Nov 2025 Open
Solids, total suspended DMR, Limited - Numeric Violation 132.00 mg/L 60.00 +120% Nov 2025 Open
Solids, total suspended DMR, Limited - Numeric Violation 98.70 mg/L 60.00 +65% Oct 2025 Open
BOD, carbonaceous [20 day, 20 C] DMR, Limited - Numeric Violation 690.53 kg/d 681.00 +1% Jul 2025 Open
Oil & Grease DMR, Limited - Numeric Violation 32.50 mg/L 30.00 +8% Jun 2025 Open
BOD, 5-day, 20 deg. C DMR, Limited - Numeric Violation 89.00 mg/L 56.00 +59% Jun 2025 Open
BOD, 5-day, 20 deg. C DMR, Limited - Numeric Violation 949.77 kg/d 908.00 +5% Jun 2025 Open
Solids, total suspended DMR, Limited - Numeric Violation 62.70 mg/L 60.00 +5% Jan 2025 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.48 kg/d 0.40 +19% Aug 2024 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.04 mg/L 0.03 +33% Aug 2024 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.04 mg/L 0.03 +33% Jul 2024 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.44 kg/d 0.40 +9% Jul 2024 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.50 kg/d 0.40 +25% Jun 2024 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.04 mg/L 0.03 +33% Jun 2024 Open
Carbon, tot organic [TOC] DMR, Limited - Numeric Violation 34.40 mg/L 5.00 +588% Nov 2023 Resolved
Carbon, tot organic [TOC] DMR, Limited - Numeric Violation 13.80 mg/L 5.00 +176% Oct 2023 Resolved
Solids, total suspended DMR, Limited - Numeric Violation 56.10 mg/L 30.00 +87% Mar 2023 Open
Solids, total suspended DMR, Limited - Numeric Violation 35,228.90 kg/d 14,945.68 +136% Mar 2023 Open
Solids, total suspended DMR, Limited - Numeric Violation 269.00 mg/L 60.00 +348% Mar 2023 Open
Phosphorus, total [as P] DMR, Limited - Numeric Violation 39.50 kg/d 37.68 +5% Jul 2022 Open
Carbon, tot organic [TOC] DMR, Limited - Numeric Violation 12.10 mg/L 5.00 +142% Dec 2021 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.07 mg/L 0.03 +133% Jul 2021 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.07 mg/L 0.06 +17% Jul 2021 Open
Selenium, total [as Se] DMR, Limited - Numeric Violation 0.73 kg/d 0.40 +82% Jul 2021 Open
Oil & Grease DMR, Limited - Numeric Violation 15.10 mg/L 15.00 +1% Jun 2021 Open
Oil & Grease DMR, Limited - Numeric Violation 626.07 kg/d 397.70 +57% Apr 2021 Open
Oil & Grease DMR, Limited - Numeric Violation 42.10 mg/L 30.00 +40% Apr 2021 Open
Oil & Grease DMR, Limited - Numeric Violation 32.80 mg/L 30.00 +9% May 2020 Open
Oil & Grease DMR, Limited - Numeric Violation 75.50 mg/L 30.00 +152% May 2020 Open
Solids, total suspended DMR, Limited - Numeric Violation 70.00 mg/L 60.00 +17% May 2020 Open
Oil & Grease DMR, Limited - Numeric Violation 784.51 kg/d 397.70 +97% May 2020 Open
Solids, total suspended DMR, Limited - Numeric Violation 80.00 mg/L 60.00 +33% Sep 2019 Open
Temperature, water deg. fahrenheit DMR, Limited - Numeric Violation 111.00 deg F 110.00 +1% Jul 2019 Open
Temperature, water deg. fahrenheit DMR, Limited - Numeric Violation 130.00 deg F 110.00 +18% Jun 2019 Open
Carbon, tot organic [TOC] DMR, Limited - Numeric Violation 7.70 mg/L 5.00 +54% Jun 2019 Open
BOD, carbonaceous, 20-day, % Removal DMR, Limited - Numeric Violation 78.52 % 89.25 +100% Nov 2018 Open
BOD, carbonaceous, 20-day, % Removal DMR, Limited - Numeric Violation 82.78 % 89.25 +60% Oct 2018 Open
Solids, total dissolved DMR, Limited - Numeric Violation 13,975.03 kg/d 13,252.26 +5% May 2018 Open
Solids, total dissolved DMR, Limited - Numeric Violation 1,069.00 mg/L 1,000.00 +7% May 2018 Open
Solids, total suspended DMR, Limited - Numeric Violation 68.00 mg/L 60.00 +13% Apr 2018 Open
Solids, total suspended DMR, Limited - Numeric Violation 12,462.75 kg/d 8,217.40 +52% Apr 2018 Open
Solids, total suspended DMR, Limited - Numeric Violation 4,363.39 kg/d 4,108.70 +6% Apr 2018 Open
Oil & Grease DMR, Limited - Numeric Violation 31.64 mg/L 15.00 +111% Mar 2018 Open
Oil & Grease DMR, Limited - Numeric Violation 117.02 mg/L 30.00 +290% Mar 2018 Open
Oil & Grease DMR, Limited - Numeric Violation 5,266.40 kg/d 2,054.35 +156% Mar 2018 Open
Solids, total suspended DMR, Limited - Numeric Violation 4,488.24 kg/d 4,108.70 +9% Jan 2018 Open
Solids, total suspended DMR, Limited - Numeric Violation 61.00 mg/L 60.00 +2% Jan 2018 Open
Solids, total suspended DMR, Limited - Numeric Violation 71.00 mg/L 60.00 +18% Jan 2018 Open
Solids, total suspended DMR, Limited - Numeric Violation 9,845.44 kg/d 8,217.40 +20% Jan 2018 Open
Solids, total suspended DMR, Limited - Numeric Violation 93.00 mg/L 60.00 +55% Nov 2017 Open

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.

Administrative - Formal
· Case 03-2004-0356
Administrative - Formal
Clean Air Act · Case 3603356751 · Sep 12, 2022
$15,390
Administrative - Formal
Clean Air Act · Case 3602922404 · Dec 7, 2021
$32,850
Notice of Violation
Clean Air Act · Case 3602867740 · Oct 15, 2021
Notice of Violation
Clean Air Act · Case 3602507564 · Mar 3, 2021
Administrative - Formal
Clean Air Act · Case 3602499558 · Jun 4, 2020
$67,985
Administrative - Formal
Clean Air Act · Case 3602499545 · Mar 19, 2020
$51,866
Administrative - Formal
Clean Air Act · Case 3602499432 · Jun 18, 2019
$21,502
Notice of Violation
Clean Air Act · Case 3602506907 · Feb 6, 2019
Notice of Violation
Clean Air Act · Case 3602506903 · Feb 6, 2019
Notice of Violation
Clean Air Act · Case 3602506793 · Sep 24, 2018
Administrative - Formal
Clean Air Act · Case 3602499249 · Mar 15, 2018
$39,862
Notice of Violation
Clean Air Act · Case 3602506361 · Apr 24, 2017
Administrative - Formal
Clean Air Act · Case 3602499129 · Apr 7, 2017
$403,528
Administrative - Formal
· Case 03-2017-0004 · Nov 9, 2016
$2,000
Notice of Violation
Clean Air Act · Case 3602506140 · Jun 15, 2016
State CWA Penalty AO
Clean Water Act · Case PA-0012637_07162014 · Jul 16, 2014
$30,543
Administrative - Formal
· Case 03-2013-0053 · Jan 10, 2013
$50,000
WRITTEN INFORMAL
RCRA (Hazardous Waste) · Case RCRA-PAR000015768-100 · Jun 9, 2009
State CWA Penalty AO
Clean Water Act · Case PA-0012637_04112007 · Apr 11, 2007
$5,140

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