TRI Reporter
Clean Air Act
Clean Water Act
RCRA
WYODAK PLANT
Quick Summary
- •Released 9,898 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
- •Assessed $0 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
48 WYODAK ROAD
GILLETTE, WY 82718
View on map ↗ - County
- CAMPBELL County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221112
- Inspections
- 5 · last Nov 13, 2024
- Total Penalties
- $0
- Registry ID
- 110007334982
How This Compares
#24
of 64 TRI reporters in WY
#410
of 584 TRI reporters in Utilities
Ranked by most recent year's total TRI releases.
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)
+63% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 5,663 | — |
| 2016 | 4,268 | -25% |
| 2017 | 9,898 | +132% |
| 2018 | 8,930 | -10% |
| 2019 | 23 | -100% |
| 2020 | 9,325 | +40232% |
| 2021 | 9,022 | -3% |
| 2022 | 9,710 | +8% |
| 2023 | 8,057 | -17% |
| 2024 | 9,246 | +15% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 5,103 | 5,103 | — | — | — | |
| Hydrogen fluoride | 3,256 | 3,256 | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 458 | 458 | — | — | 700,100 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 196 | 196 | — | — | — | |
| Manganese compounds | 73 | 73 | — | — | 30,605 | |
| Copper compounds | 54 | 54 | — | — | 25,217 | |
| Vanadium compounds | 49 | 49 | — | — | 25,272 | |
| Lead compounds | 32 | 32 | — | — | 7,303 | |
| Mercury compounds | 25 | 25 | — | — | 285 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4,682 | 4,682 | — | — | — | |
| Hydrogen fluoride | 2,727 | 2,727 | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 224 | 224 | — | — | 430,000 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 175 | 175 | — | — | — | |
| Manganese compounds | 67 | 67 | — | — | 41,298 | |
| Copper compounds | 51 | 51 | — | — | 34,951 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 50 | 50 | — | — | 19,933 | |
| Vanadium compounds | 34 | 34 | — | — | 21,176 | |
| Lead compounds | 24 | 24 | — | — | 6,986 | |
| Mercury compounds | 23 | 23 | — | — | 226 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 5,637 | 5,637 | — | — | — | |
| Hydrogen fluoride | 2,767 | 2,767 | — | — | — | |
| Zinc compounds | 423 | 423 | — | — | 38,092 | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 380 | 380 | — | — | 814,800 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 181 | 181 | — | — | — | |
| Manganese compounds | 76 | 76 | — | — | 49,959 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 56 | 56 | — | — | 24,420 | |
| Nickel compounds | 53 | 53 | — | — | 19,451 | ♦ Carcinogen |
| Copper compounds | 52 | 52 | — | — | 35,712 | |
| Vanadium compounds | 36 | 36 | — | — | 23,050 | |
| Lead compounds | 26 | 26 | — | — | 8,187 | |
| Mercury compounds | 23 | 23 | — | — | 185 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 5,604 | 5,604 | — | — | — | |
| Hydrogen fluoride | 2,497 | 2,497 | — | — | — | |
| Zinc compounds | 342 | 342 | — | — | 31,969 | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 214 | 214 | — | — | 541,400 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 194 | 194 | — | — | — | |
| Manganese compounds | 58 | 58 | — | — | 43,712 | |
| Copper compounds | 42 | 42 | — | — | 33,821 | |
| Vanadium compounds | 30 | 30 | — | — | 22,917 | |
| Mercury compounds | 23 | 23 | — | — | 219 | |
| Lead compounds | 18 | 18 | — | — | 5,642 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 6,321 | 6,321 | — | — | — | |
| Hydrogen fluoride | 1,974 | 1,974 | — | — | — | |
| Zinc compounds | 339 | 339 | — | — | 25,268 | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 302 | 277 | 25 | — | 706,500 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 198 | 198 | — | — | — | |
| Manganese compounds | 73 | 66 | 7 | — | 49,718 | |
| Copper compounds | 45 | 45 | — | — | 33,620 | |
| Vanadium compounds | 33 | 33 | — | — | 23,969 | |
| Mercury compounds | 23 | 23 | — | — | 174 | |
| Lead compounds | 17 | 17 | — | — | 4,463 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Mercury compounds | 23 | 23 | — | — | 240 |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4,710 | 4,710 | — | — | — | |
| Hydrogen fluoride | 3,178 | 3,178 | — | — | — | |
| Zinc compounds | 364 | 364 | — | — | 32,789 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 262 | 262 | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 243 | 243 | — | — | 1,083,800 | |
| Manganese compounds | 49 | 49 | — | — | 48,745 | |
| Copper compounds | 46 | 46 | — | — | 34,158 | |
| Vanadium compounds | 32 | 32 | — | — | 32,660 | |
| Mercury compounds | 25 | 25 | — | — | 307 | |
| Lead compounds | 20 | 20 | — | — | 9,852 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4,932 | 4,932 | — | — | — | |
| Hydrogen fluoride | 3,585 | 3,585 | — | — | — | |
| Zinc compounds | 464 | 464 | — | — | 36,929 | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 371 | 371 | — | — | 1,061,000 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 248 | 248 | — | — | — | |
| Manganese compounds | 82 | 82 | — | — | 67,409 | |
| Copper compounds | 63 | 63 | — | — | 47,281 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 54 | 54 | — | — | 24,617 | |
| Vanadium compounds | 43 | 43 | — | — | 32,774 | |
| Mercury compounds | 28 | 28 | — | — | 436 | |
| Lead compounds | 27 | 27 | — | — | 9,878 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 3,183 | 3,183 | — | — | — | |
| Zinc compounds | 353 | 353 | — | — | 39,979 | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 319 | 319 | — | — | 797,600 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 200 | 200 | — | — | — | |
| Manganese compounds | 85 | 85 | — | — | 77,378 | |
| Copper compounds | 49 | 49 | — | — | 68,741 | |
| Vanadium compounds | 36 | 36 | — | — | 25,971 | |
| Mercury compounds | 23 | 23 | — | — | 239 | |
| Lead compounds | 20 | 20 | — | — | 6,457 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 3,850 | 3,850 | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 591 | 591 | — | — | 1,064,000 | |
| Zinc compounds | 508 | 508 | — | — | 36,370 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 243 | 243 | — | — | — | |
| Manganese compounds | 125 | 125 | — | — | 81,140 | |
| Mercury compounds | 111 | 111 | — | — | 208 | |
| Copper compounds | 75 | 75 | — | — | 59,928 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 69 | 69 | — | — | 23,180 | |
| Vanadium compounds | 57 | 57 | — | — | 32,100 | |
| Lead compounds | 33 | 33 | — | — | 8,543 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ 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 |
|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 54,291 |
| Manganese compounds | — | 2 | — | — |
| Copper compounds | — | 2,261 | — | — |
| Hydrogen fluoride | — | — | — | 145,676 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 35,104 |
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 |
|---|---|---|---|---|---|
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (FA/SCRBR SLDG)
GILLETTE, WY
|
Mercury compounds | 253 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (BTM ASH)
GILLETTE, WY
|
Mercury compounds | 31 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (FA/SCRBR SLDG)
GILLETTE, WY
|
Manganese compounds | 23,230 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (BTM ASH)
GILLETTE, WY
|
Manganese compounds | 7,359 | — | — | — |
|
PACIFIC STEEL & RECYCLING
GILLETTE, WY
|
Manganese compounds | — | 2 | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (BALL MILLS)
GILLETTE, WY
|
Manganese compounds | 14 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (FA/SCRBR SLDG)
GILLETTE, WY
|
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 516,400 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (BTM ASH)
GILLETTE, WY
|
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 183,700 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (FA/SCRBR SLDG)
GILLETTE, WY
|
Vanadium compounds | 18,980 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (BTM ASH)
GILLETTE, WY
|
Vanadium compounds | 6,292 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (FA/SCRBR SLDG)
GILLETTE, WY
|
Lead compounds | 6,530 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (BTM ASH)
GILLETTE, WY
|
Lead compounds | 773 | — | — | — |
|
VEOLIA ES TECHNICAL SOLUTIONS / ONYX ENV. SRVS. - CO
HENDERSON, CO
|
Lead compounds | 0 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (FA/SCRBR SLDG)
GILLETTE, WY
|
Copper compounds | 18,610 | — | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (BTM ASH)
GILLETTE, WY
|
Copper compounds | 4,337 | — | — | — |
|
PACIFIC STEEL & RECYCLING
GILLETTE, WY
|
Copper compounds | — | 2,261 | — | — |
|
BLACK HILLS CORP - NEIL SIMPSON COMPLEX (BALL MILLS)
GILLETTE, WY
|
Copper compounds | 9 | — | — | — |
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 |
|---|---|---|---|---|
| rcra | Standards for Used Oil: Generators | Feb 6, 2013 | Feb 6, 2013 | Resolved |
| rcra | Standards for Used Oil: Generators | May 20, 2003 | May 20, 2003 | 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.
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-WYD083710103-001 · May 28, 2003
Other facilities in CAMPBELL County, WY
PEABODY COAL- RAWHIDE MINE
GILLETTE, WY
· Mining, Quarrying, and Oil and Gas Extraction
CAMPBELL COUNTY #1
GILLETTE, WY
LIBERTY OILFIELD SERVICES
GILLETTE, WY
· Mining, Quarrying, and Oil and Gas Extraction
UPDIKE BROTHERS INC. SHOP
GILLETTE, WY
QUALITY AUTO
GILLETTE, WY