TRI Reporter
Clean Air Act
RCRA
BLACK HILLS CORP - NEIL SIMPSON COMPLEX
Quick Summary
- •Released 2,250,537 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
-
13151 WY-51
GILLETTE, WY 82718
View on map ↗ - County
- CAMPBELL County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221112
- Inspections
- 6 · last Apr 24, 2024
- Total Penalties
- $0 · last Jun 25, 2013
- Registry ID
- 110000600341
How This Compares
#4
of 64 TRI reporters in WY
#34
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)
-25% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 2,262,623 | — |
| 2016 | 1,993,141 | -12% |
| 2017 | 2,250,537 | +13% |
| 2018 | 2,250,967 | 0% |
| 2019 | 102,222 | -95% |
| 2020 | 1,831,217 | +1691% |
| 2021 | 1,560,498 | -15% |
| 2022 | 1,896,918 | +22% |
| 2023 | 1,525,145 | -20% |
| 2024 | 1,691,648 | +11% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,320,341 | 811 | — | 1,319,530 | — | |
| Manganese | 78,286 | 63 | — | 78,223 | — | |
| Vanadium (except when contained in an alloy) | 72,144 | 59 | — | 72,085 | — | |
| Copper | 63,702 | 54 | — | 63,648 | — | |
| Zinc (fume or dust) | 47,733 | 43 | — | 47,690 | — | |
| Chromium | 34,016 | 23 | — | 33,993 | — | |
| Ammonia | 28,333 | 28,333 | — | — | — | |
| Nickel | 25,410 | 16 | — | 25,394 | — | ♦ Carcinogen |
| Lead | 20,959 | 17 | — | 20,942 | — | ♦ Carcinogen |
| Mercury | 721 | 304 | — | 417 | — | |
| Dioxin and dioxin-like compounds | 3 | 3 | — | — | — | ♦ Carcinogen |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,109,451 | 868 | 33 | 1,108,550 | — | |
| Manganese | 92,902 | 67 | 1 | 92,834 | — | |
| Copper | 79,490 | 58 | 1 | 79,431 | — | |
| Vanadium (except when contained in an alloy) | 72,671 | 64 | — | 72,607 | — | |
| Zinc (fume or dust) | 48,163 | 69 | — | 48,094 | — | |
| Chromium | 37,967 | 24 | 1 | 37,942 | — | |
| Ammonia | 30,964 | 30,964 | — | — | — | |
| Nickel | 30,903 | 17 | 1 | 30,885 | — | ♦ Carcinogen |
| Lead | 21,953 | 19 | 1 | 21,933 | — | ♦ Carcinogen |
| Mercury | 680 | 340 | — | 340 | — | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,454,828 | 817 | 38 | 1,453,973 | — | |
| Manganese | 98,359 | 63 | 2 | 98,294 | — | |
| Copper | 76,863 | 55 | 1 | 76,807 | — | |
| Vanadium (except when contained in an alloy) | 71,608 | 61 | — | 71,547 | — | |
| Zinc (fume or dust) | 67,343 | 41 | — | 67,302 | — | |
| Chromium | 41,397 | 22 | 2 | 41,373 | — | |
| Nickel | 32,354 | 16 | 1 | 32,337 | — | ♦ Carcinogen |
| Ammonia | 31,201 | 31,201 | — | — | — | |
| Lead | 22,291 | 18 | 2 | 22,271 | — | ♦ Carcinogen |
| Mercury | 675 | 353 | — | 322 | — | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,178,228 | 847 | 334 | 1,177,047 | — | |
| Manganese | 91,265 | 63 | 13 | 91,189 | — | |
| Vanadium (except when contained in an alloy) | 71,351 | 64 | — | 71,287 | — | |
| Copper | 70,708 | 56 | 7 | 70,645 | — | |
| Zinc (fume or dust) | 40,893 | 41 | — | 40,852 | — | |
| Chromium | 31,192 | 23 | 13 | 31,156 | — | |
| Nickel | 29,287 | 17 | 7 | 29,263 | — | ♦ Carcinogen |
| Ammonia | 27,185 | 27,185 | — | — | — | |
| Lead | 19,702 | 19 | 13 | 19,670 | — | ♦ Carcinogen |
| Mercury | 686 | 328 | — | 358 | — | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,414,911 | 930 | 477 | 1,413,504 | — | |
| Manganese | 102,445 | 69 | 19 | 102,357 | — | |
| Vanadium (except when contained in an alloy) | 77,881 | 71 | — | 77,810 | — | |
| Copper | 75,989 | 62 | 10 | 75,917 | — | |
| Zinc (fume or dust) | 44,166 | 44 | — | 44,122 | — | |
| Chromium | 34,061 | 25 | 19 | 34,017 | — | |
| Ammonia | 30,540 | 30,540 | — | — | — | |
| Nickel | 30,433 | 18 | 10 | 30,405 | — | ♦ Carcinogen |
| Lead | 20,099 | 20 | 19 | 20,060 | — | ♦ Carcinogen |
| Mercury | 692 | 364 | — | 328 | — | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2019
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,789,000 | 1,083 | 14 | 1,787,903 | — | |
| Manganese | 101,912 | 82 | 1 | 101,829 | — | |
| Vanadium (except when contained in an alloy) | 86,204 | 82 | 0 | 86,122 | — | |
| Copper | 82,488 | 72 | 0 | 82,416 | — | |
| Zinc (fume or dust) | 65,952 | 52 | — | 65,900 | — | |
| Chromium | 37,341 | 29 | 1 | 37,311 | — | |
| Nickel | 31,756 | 22 | 0 | 31,734 | — | ♦ Carcinogen |
| Ammonia | 30,095 | 30,095 | — | — | — | |
| Lead | 25,396 | 24 | 1 | 25,371 | — | ♦ Carcinogen |
| Mercury | 822 | 363 | — | 459 | — | |
| Dioxin and dioxin-like compounds | 2 | 2 | — | — | — | ♦ Carcinogen |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,750,092 | 1,047 | 3 | 1,749,042 | — | |
| Manganese | 119,974 | 80 | 0 | 119,894 | — | |
| Copper | 93,458 | 69 | 0 | 93,389 | — | |
| Vanadium (except when contained in an alloy) | 84,950 | 79 | 0 | 84,871 | — | |
| Zinc (fume or dust) | 70,039 | 51 | — | 69,988 | — | |
| Chromium | 42,918 | 28 | 0 | 42,890 | — | |
| Nickel | 32,547 | 21 | 0 | 32,526 | — | ♦ Carcinogen |
| Ammonia | 30,489 | 30,489 | — | — | — | |
| Lead | 25,051 | 23 | 0 | 25,028 | — | ♦ Carcinogen |
| Mercury | 1,017 | 433 | — | 584 | — | |
| Dioxin and dioxin-like compounds | 2 | 2 | — | — | — | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,517,105 | 1,090 | 34 | 1,515,981 | — | |
| Manganese | 132,370 | 83 | 1 | 132,286 | — | |
| Copper | 81,479 | 72 | 1 | 81,406 | — | |
| Vanadium (except when contained in an alloy) | 80,416 | 82 | 1 | 80,333 | — | |
| Zinc (fume or dust) | 61,234 | 54 | — | 61,180 | — | |
| Chromium | 36,475 | 29 | 1 | 36,445 | — | |
| Ammonia | 31,103 | 31,103 | — | — | — | |
| Nickel | 29,893 | 22 | 1 | 29,870 | — | ♦ Carcinogen |
| Lead | 22,305 | 24 | 1 | 22,280 | — | ♦ Carcinogen |
| Mercury | 759 | 358 | — | 401 | — | |
| Dioxin and dioxin-like compounds | 2 | 2 | — | — | — | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,761,607 | 1,064 | 1,955 | 1,758,588 | — | |
| Manganese | 133,871 | 81 | 78 | 133,712 | — | |
| Copper | 90,645 | 65 | 39 | 90,541 | — | |
| Vanadium (except when contained in an alloy) | 84,907 | 80 | 39 | 84,788 | — | |
| Zinc (fume or dust) | 62,848 | 52 | — | 62,796 | — | |
| Chromium | 41,713 | 29 | 78 | 41,606 | — | |
| Nickel | 31,992 | 21 | 39 | 31,932 | — | ♦ Carcinogen |
| Ammonia | 30,369 | 30,369 | — | — | — | |
| Lead | 23,959 | 24 | 78 | 23,857 | — | ♦ Carcinogen |
| Mercury | 711 | 351 | 0 | 360 | — | |
| 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 |
|---|
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 Universal Waste Management: Standards for Small Quantity Handlers | Apr 7, 2016 | Apr 7, 2016 | Resolved |
| rcra | Standards for Used Oil: Generators | Apr 7, 2016 | Apr 7, 2016 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Nov 9, 2011 | Nov 9, 2011 | Resolved |
| rcra | Standards for Used Oil: Generators | Nov 9, 2011 | Nov 9, 2011 | Resolved |
| rcra | Standards for Used Oil: Generators | Apr 9, 2003 | Apr 9, 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-WYD988874376-001 · Apr 15, 2003
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