Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
THOMAS HILL ENERGY CENTER - POWER DIV
Quick Summary
- •Released 2,319,240 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 $0 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
5693 HIGHWAY F
CLIFTON HILL, MO 65244
View on map ↗ - County
- RANDOLPH County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221112
- Inspections
- 5 · last Jul 29, 2025
- Total Penalties
- $0
- Registry ID
- 110000444243
How This Compares
#7
of 454 TRI reporters in MO
#32
of 584 TRI reporters in Utilities
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.
0
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
7
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Hazardous Waste (RCRA)
Qtrs Non-Compliant
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)
-81% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 5,026,264 | — |
| 2016 | 2,003,951 | -60% |
| 2017 | 2,319,240 | +16% |
| 2018 | 2,241,721 | -3% |
| 2019 | 991,803 | -56% |
| 2020 | 734,628 | -26% |
| 2021 | 1,010,890 | +38% |
| 2022 | 1,214,969 | +20% |
| 2023 | 1,020,328 | -16% |
| 2024 | 961,193 | -6% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 661,202 | 914 | 134 | 660,154 | — | |
| Hydrogen fluoride | 167,453 | 167,453 | — | — | — | |
| Ammonia | 36,790 | 36,790 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 28,705 | 28,705 | — | — | — | |
| Vanadium compounds | 19,263 | 264 | — | 18,999 | 17,352 | |
| Copper compounds | 16,846 | 259 | 9 | 16,578 | — | |
| Manganese compounds | 13,768 | 327 | 130 | 13,311 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 8,936 | 8,936 | — | — | — | |
| Zinc compounds | 7,965 | 669 | 15 | 7,281 | — | |
| Lead compounds | 132 | 125 | 7 | — | — | |
| Mercury compounds | 128 | 28 | 0 | 100 | — | |
| Dioxin and dioxin-like compounds | 4 | 4 | — | — | — | ♦ Carcinogen |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 697,717 | 948 | 134 | 696,635 | — | |
| Hydrogen fluoride | 180,447 | 180,447 | — | — | — | |
| Ammonia | 36,834 | 36,834 | — | — | — | |
| Vanadium compounds | 27,883 | 200 | — | 27,683 | 18,708 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 25,668 | 25,668 | — | — | — | |
| Copper compounds | 18,849 | 211 | 9 | 18,629 | — | |
| Manganese compounds | 13,759 | 252 | 130 | 13,377 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 10,541 | 10,541 | — | — | — | |
| Zinc compounds | 8,399 | 554 | 15 | 7,830 | — | |
| Mercury compounds | 135 | 30 | 0 | 104 | — | |
| Lead compounds | 93 | 86 | 7 | — | — | |
| Dioxin and dioxin-like compounds | 4 | 4 | — | — | — | ♦ Carcinogen |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 820,626 | 995 | 1,212 | 818,419 | — | |
| Hydrogen fluoride | 222,979 | 222,979 | — | — | — | |
| Vanadium compounds | 34,811 | 81 | — | 34,730 | 17,965 | |
| Ammonia | 34,303 | 34,303 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 29,683 | 29,683 | — | — | — | |
| Copper compounds | 23,032 | 127 | 23 | 22,882 | — | |
| Manganese compounds | 16,556 | 130 | 218 | 16,208 | — | |
| Zinc compounds | 15,134 | 415 | 69 | 14,650 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 11,218 | 11,218 | — | — | — | |
| Lead compounds | 6,460 | 38 | 22 | 6,400 | — | |
| Mercury compounds | 165 | 41 | 1 | 123 | — | |
| Dioxin and dioxin-like compounds | 4 | 4 | — | — | — | ♦ Carcinogen |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 511,005 | 1,686 | 1,548 | 507,771 | — | |
| Hydrogen fluoride | 281,786 | 281,786 | — | — | — | |
| Ammonia | 105,280 | 105,280 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 37,998 | 37,998 | — | — | — | |
| Vanadium compounds | 16,499 | 134 | — | 16,365 | — | |
| Copper compounds | 13,919 | 207 | 30 | 13,682 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 13,582 | 13,582 | — | — | — | |
| Manganese compounds | 11,360 | 223 | 451 | 10,686 | — | |
| Zinc compounds | 6,645 | 556 | 88 | 6,001 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 4,871 | 136 | 14 | 4,720 | — | |
| Nickel | 4,816 | 185 | 30 | 4,601 | — | ♦ Carcinogen |
| Lead compounds | 2,985 | 65 | 21 | 2,898 | — | |
| Mercury compounds | 139 | 59 | 0 | 80 | — | |
| Dioxin and dioxin-like compounds | 5 | 5 | — | — | — | ♦ Carcinogen |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 432,705 | 1,251 | 1,320 | 430,134 | — | |
| Hydrogen fluoride | 216,726 | 216,726 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 20,681 | 20,681 | — | — | — | |
| Vanadium compounds | 17,068 | 108 | — | 16,960 | — | |
| Copper compounds | 12,036 | 159 | 35 | 11,842 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 10,904 | 10,904 | — | — | — | |
| Manganese compounds | 9,434 | 169 | 567 | 8,698 | — | |
| Zinc compounds | 7,078 | 474 | 262 | 6,342 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 4,769 | 124 | 14 | 4,630 | — | |
| Lead compounds | 3,088 | 50 | 58 | 2,980 | — | |
| Mercury compounds | 135 | 55 | 1 | 80 | — | |
| Dioxin and dioxin-like compounds | 4 | 4 | — | — | — | ♦ Carcinogen |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 724,172 | 1,692 | 1,169 | 721,311 | — | |
| Ammonia | 134,802 | 134,802 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 47,321 | 47,321 | — | — | — | |
| Vanadium compounds | 27,122 | 137 | — | 26,985 | — | |
| Copper compounds | 19,363 | 196 | 104 | 19,063 | — | |
| Manganese compounds | 14,946 | 212 | 596 | 14,138 | — | |
| Zinc compounds | 13,179 | 634 | 194 | 12,351 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 5,876 | 129 | 24 | 5,723 | — | |
| Lead compounds | 4,817 | 62 | 60 | 4,695 | — | |
| Mercury compounds | 199 | 61 | 1 | 137 | — | |
| Dioxin and dioxin-like compounds | 5 | 5 | — | — | — | ♦ Carcinogen |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,608,933 | 2,372 | 1,224 | 1,605,337 | — | |
| Hydrogen fluoride | 222,979 | 222,979 | — | — | — | |
| Ammonia | 176,960 | 176,960 | — | — | — | |
| Vanadium compounds | 52,325 | 177 | — | 52,148 | — | |
| Copper compounds | 47,545 | 241 | 104 | 47,199 | — | |
| Manganese compounds | 33,028 | 287 | 518 | 32,223 | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 31,633 | 31,633 | — | — | — | |
| Zinc compounds | 29,546 | 734 | 267 | 28,545 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 15,691 | 165 | 21 | 15,505 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 14,015 | 14,015 | — | — | — | |
| Lead compounds | 8,830 | 83 | 56 | 8,691 | — | |
| Mercury compounds | 233 | 65 | 0 | 167 | — | |
| Dioxin and dioxin-like compounds | 5 | 5 | — | — | — | ♦ Carcinogen |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,551,333 | 2,722 | 1,847 | 1,546,764 | — | |
| Hydrogen fluoride | 359,707 | 359,707 | — | — | — | |
| Ammonia | 164,148 | 164,148 | — | — | — | |
| Vanadium compounds | 48,710 | 179 | — | 48,531 | — | |
| Copper compounds | 45,535 | 258 | 164 | 45,113 | — | |
| Manganese compounds | 32,476 | 306 | 1,015 | 31,155 | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 28,903 | 28,903 | — | — | — | |
| Zinc compounds | 28,608 | 782 | 376 | 27,449 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 22,431 | 22,431 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 15,691 | 170 | 28 | 15,493 | — | |
| Nickel compounds | 13,500 | 220 | 39 | 13,241 | — | ♦ Carcinogen |
| Lead compounds | 7,966 | 87 | 73 | 7,806 | — | |
| Mercury compounds | 227 | 69 | 0 | 157 | — | |
| Dioxin and dioxin-like compounds | 5 | 5 | — | — | — | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,383,417 | 2,451 | 1,828 | 1,379,138 | — | |
| Hydrogen fluoride | 312,248 | 312,248 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 105,870 | 105,870 | — | — | — | |
| Vanadium compounds | 44,277 | 162 | — | 44,115 | — | |
| Copper compounds | 42,590 | 235 | 176 | 42,179 | — | |
| Manganese compounds | 29,149 | 338 | 1,030 | 27,781 | — | |
| Zinc compounds | 27,887 | 748 | 357 | 26,782 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 19,890 | 19,890 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 15,809 | 199 | 31 | 15,580 | — | |
| Nickel compounds | 12,110 | 197 | 57 | 11,856 | — | ♦ Carcinogen |
| Lead compounds | 10,471 | 115 | 86 | 10,270 | — | |
| Mercury compounds | 228 | 82 | 1 | 145 | — | |
| Dioxin and dioxin-like compounds | 4 | 4 | — | — | — | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 3,993,940 | 9,192 | 2,103 | 3,982,645 | 2 | |
| Hydrogen fluoride | 340,469 | 340,469 | — | — | — | |
| Vanadium compounds | 125,520 | 374 | — | 125,146 | — | |
| Copper compounds | 115,503 | 357 | 191 | 114,955 | 572 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 114,229 | 114,229 | — | — | — | |
| Manganese compounds | 82,414 | 485 | 1,097 | 80,832 | 61 | |
| Zinc compounds | 73,973 | 1,317 | 350 | 72,306 | 208 | |
| Ammonia | 65,752 | 65,752 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 42,412 | 272 | 17 | 42,123 | 4 | |
| Nickel compounds | 34,320 | 320 | 40 | 33,960 | — | ♦ Carcinogen |
| Lead compounds | 20,049 | 178 | 87 | 19,784 | 2 | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 17,170 | 17,170 | — | — | — | |
| Mercury compounds | 508 | 238 | 0 | 270 | — | |
| Dioxin and dioxin-like compounds | 5 | 5 | — | — | — | ♦ 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 |
|---|---|---|---|---|
| Hydrogen fluoride | — | — | — | 136,139 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 82,039 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 32,463 |
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 |
|---|---|---|---|---|---|
|
MAPLE HILL LANDFILL
MACON, MO
|
Vanadium compounds | 17,352 | — | — | — |
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 |
|---|---|---|---|---|
| cwa | Schedule Event reported late | Nov 1, 2023 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 1, 2023 | — | Open |
| cwa | Effluent Violations - Numeric effluent violation | Sep 19, 2022 | Sep 19, 2022 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Aug 28, 2020 | Aug 28, 2020 | Resolved |
| caa | FRV | May 7, 2020 | — | Open |
| rcra | Standards Applicable to Generators of HW: General | Jan 25, 1995 | Mar 1, 1995 | 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 |
|---|---|---|---|---|---|---|
| Chlorides + Sulfates | DMR, Limited - Numeric Violation | 1,530.80 mg/L | 1,000.00 | +53% | Sep 2025 | Open |
| Chlorides + Sulfates | DMR, Limited - Numeric Violation | 1,530.80 mg/L | 1,000.00 | +53% | Sep 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 87.00 mg/L | 70.00 | +24% | Aug 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 69.00 mg/L | 35.00 | +97% | Aug 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 103.00 mg/L | 50.00 | +106% | Aug 2023 | Open |
| E. coli | DMR, Limited - Numeric Violation | 141.00 MPN/100mL | 126.00 | +12% | Jun 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 78.30 mg/L | 70.00 | +12% | Nov 2022 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.15 mg/L | 0.02 | +782% | Oct 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 53.40 mg/L | 35.00 | +53% | Aug 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 89.40 mg/L | 50.00 | +79% | Jun 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 82.40 mg/L | 70.00 | +18% | Jun 2022 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.28 mg/L | 0.02 | +1,547% | Oct 2020 | Open |
| Iron, total recoverable | DMR, Limited - Numeric Violation | 1.57 mg/L | 1.00 | +57% | Jun 2020 | Open |
| Iron, total recoverable | DMR, Limited - Numeric Violation | 1.57 mg/L | 1.00 | +57% | Jun 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 59.50 mg/L | 50.00 | +19% | Aug 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 156.40 mg/L | 100.00 | +56% | Aug 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 76.30 mg/L | 30.00 | +154% | Aug 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 47.40 mg/L | 30.00 | +58% | Jul 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 74.40 mg/L | 50.00 | +49% | Jun 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 74.00 mg/L | 30.00 | +147% | Jun 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 74.40 mg/L | 50.00 | +49% | Jun 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 52.70 mg/L | 30.00 | +76% | May 2019 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 727.00 MPN/100mL | 630.00 | +15% | Sep 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.20 mg/L | 7.50 | +383% | Feb 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.16 mg/L | 2.80 | +227% | Feb 2018 | 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.
Warning Letter
Clean Air Act
· Case 3602225484 · May 7, 2020
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-MOD053979316-000 · Feb 3, 1995
State CWA Non Penalty AO
Clean Water Act
· Case MO-N00000444 · Aug 28, 1991
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