TRI Reporter
Clean Air Act
Clean Water Act
RCRA
PACIFICORP DAVE JOHNSTON PLANT
Quick Summary
- •Released 1,594,685 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
- •Assessed $30,000 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
1591 TANK FARM RD
GLENROCK, WY 82637
View on map ↗ - County
- CONVERSE County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221112
- Inspections
- 9 · last May 21, 2025
- Total Penalties
- $30,000 · last Jan 12, 2022
- Registry ID
- 110013320245
How This Compares
#5
of 64 TRI reporters in WY
#58
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)
-39% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 2,135,153 | — |
| 2016 | 1,843,752 | -14% |
| 2017 | 1,594,685 | -14% |
| 2018 | 1,624,584 | +2% |
| 2019 | 1,305,770 | -20% |
| 2020 | 1,998,259 | +53% |
| 2021 | 1,712,350 | -14% |
| 2022 | 1,658,710 | -3% |
| 2023 | 1,265,368 | -24% |
| 2024 | 1,310,729 | +4% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,101,613 | 1,567 | — | 1,100,046 | — | |
| Manganese compounds | 70,944 | 195 | — | 70,749 | 2 | |
| Copper compounds | 39,807 | 125 | 7 | 39,675 | 3,064 | |
| Vanadium compounds | 37,667 | 103 | — | 37,564 | — | |
| Zinc compounds | 23,450 | 611 | — | 22,839 | 1,194 | |
| Hydrogen fluoride | 14,400 | 14,400 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 10,720 | 10,720 | — | — | — | |
| Lead compounds | 6,904 | 40 | — | 6,864 | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4,868 | 4,868 | — | — | — | |
| Mercury compounds | 346 | 36 | — | 310 | — | |
| Naphthalene | 9 | 9 | — | — | — | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,014,148 | 1,469 | — | 1,012,679 | — | |
| Manganese compounds | 83,587 | 221 | — | 83,366 | — | |
| Vanadium compounds | 36,338 | 102 | — | 36,236 | — | |
| Copper compounds | 34,782 | 114 | 162 | 34,506 | 176 | |
| Zinc compounds | 25,728 | 624 | — | 25,104 | 69 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 18,576 | 89 | — | 18,487 | — | |
| Nickel compounds | 16,123 | 94 | — | 16,029 | 1 | ♦ Carcinogen |
| Hydrogen fluoride | 11,740 | 11,740 | — | — | — | |
| Lead compounds | 11,539 | 46 | — | 11,493 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7,697 | 7,697 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4,621 | 4,621 | — | — | — | |
| Mercury compounds | 480 | 41 | — | 439 | — | |
| Naphthalene | 9 | 9 | — | — | — | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,436,624 | 2,097 | — | 1,434,527 | — | |
| Manganese compounds | 64,320 | 204 | — | 64,116 | — | |
| Copper compounds | 42,415 | 135 | 20 | 42,260 | 176 | |
| Vanadium compounds | 37,296 | 114 | — | 37,182 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 19,738 | 106 | — | 19,632 | — | |
| Zinc compounds | 19,412 | 633 | — | 18,779 | 69 | |
| Hydrogen fluoride | 16,420 | 16,420 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 9,820 | 9,820 | — | — | — | |
| Lead compounds | 7,886 | 52 | — | 7,834 | 1 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4,470 | 4,470 | — | — | — | |
| Mercury compounds | 300 | 39 | — | 260 | — | |
| Naphthalene | 9 | 9 | — | — | — | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,460,846 | 3,085 | — | 1,457,761 | — | |
| Manganese compounds | 64,824 | 259 | — | 64,565 | — | |
| Copper compounds | 44,210 | 171 | — | 44,039 | 1,267 | |
| Vanadium compounds | 36,843 | 142 | — | 36,701 | — | |
| Zinc compounds | 27,756 | 790 | — | 26,966 | 494 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 22,070 | 135 | — | 21,935 | — | |
| Nickel compounds | 17,505 | 126 | — | 17,379 | 9 | ♦ Carcinogen |
| Hydrogen fluoride | 16,640 | 16,640 | — | — | — | |
| Lead compounds | 9,194 | 68 | — | 9,127 | 2 | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7,595 | 7,595 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4,623 | 4,623 | — | — | — | |
| Mercury compounds | 235 | 32 | — | 203 | — | |
| Naphthalene | 9 | 9 | — | — | — | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Chlorine | — | — | — | — | — | |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,745,539 | 6,939 | — | 1,738,600 | — | |
| Copper compounds | 55,585 | 317 | 26 | 55,242 | 81 | |
| Manganese compounds | 46,147 | 299 | — | 45,848 | — | |
| Vanadium compounds | 42,571 | 246 | — | 42,325 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 24,955 | 204 | — | 24,751 | — | |
| Zinc compounds | 22,554 | 864 | — | 21,690 | 32 | |
| Nickel compounds | 18,884 | 178 | — | 18,706 | 1 | ♦ Carcinogen |
| Hydrogen fluoride | 17,380 | 17,380 | — | — | — | |
| Lead compounds | 10,034 | 97 | — | 9,936 | 1 | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 8,876 | 8,876 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 5,412 | 5,412 | — | — | — | |
| Mercury compounds | 311 | 38 | — | 273 | 1 | |
| Naphthalene | 10 | 10 | — | — | 6 | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,305,770 | 7,422 | 2,314 | 1,296,034 | — |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,400,333 | 7,559 | 2,453 | 1,390,321 | — | |
| Copper compounds | 48,540 | 358 | 24 | 48,158 | 6,706 | |
| Vanadium compounds | 45,954 | 318 | — | 45,636 | — | |
| Manganese compounds | 36,557 | 284 | 1,629 | 34,644 | 5 | |
| Zinc compounds | 26,921 | 913 | — | 26,008 | 2,613 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 18,463 | 181 | 526 | 17,756 | — | |
| Hydrogen fluoride | 18,100 | 18,100 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 12,700 | 12,700 | — | — | — | |
| Lead compounds | 11,035 | 113 | — | 10,922 | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 5,565 | 5,565 | — | — | — | |
| Mercury compounds | 404 | 41 | — | 362 | — | |
| Naphthalene | 12 | 12 | — | — | — | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,342,487 | 7,214 | 2,488 | 1,332,785 | — | |
| Copper compounds | 47,090 | 341 | 24 | 46,725 | 6,976 | |
| Vanadium compounds | 43,671 | 297 | — | 43,374 | — | |
| Manganese compounds | 43,653 | 314 | 1,652 | 41,687 | 5 | |
| Zinc compounds | 31,527 | 901 | — | 30,626 | 2,719 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 20,701 | 187 | 533 | 19,981 | — | |
| Hydrogen fluoride | 20,150 | 20,150 | — | — | — | |
| Nickel compounds | 16,664 | 169 | — | 16,495 | 49 | ♦ Carcinogen |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 12,900 | 12,900 | — | — | — | |
| Lead compounds | 9,984 | 100 | — | 9,884 | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 5,447 | 5,447 | — | — | — | |
| Mercury compounds | 400 | 41 | — | 358 | — | |
| Naphthalene | 10 | 10 | — | — | — | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,523,613 | 7,031 | 2,462 | 1,514,120 | — | |
| Manganese compounds | 63,094 | 399 | 1,635 | 61,060 | 5 | |
| Copper compounds | 59,745 | 378 | 24 | 59,343 | 6,586 | |
| Vanadium compounds | 50,887 | 308 | — | 50,579 | — | |
| Zinc compounds | 45,803 | 1,134 | — | 44,669 | 2,567 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 26,684 | 218 | 528 | 25,938 | — | |
| Hydrogen fluoride | 23,900 | 23,900 | — | — | — | |
| Nickel compounds | 18,687 | 178 | — | 18,509 | 47 | ♦ Carcinogen |
| Lead compounds | 13,418 | 121 | — | 13,297 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 11,380 | 11,380 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 6,110 | 6,110 | — | — | — | |
| Mercury compounds | 418 | 42 | — | 376 | 2 | |
| Naphthalene | 12 | 12 | — | — | — | ♦ Carcinogen |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,805,799 | 7,678 | 3,374 | 1,794,747 | — | |
| Copper compounds | 63,653 | 388 | 33 | 63,232 | 22,590 | |
| Manganese compounds | 61,910 | 369 | 2,241 | 59,300 | 16 | |
| Vanadium compounds | 54,804 | 310 | — | 54,494 | — | |
| Zinc compounds | 40,134 | 1,054 | — | 39,080 | 8,804 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 30,925 | 231 | 723 | 29,971 | — | |
| Nickel compounds | 23,582 | 191 | — | 23,391 | 160 | ♦ Carcinogen |
| Hydrogen fluoride | 22,840 | 22,840 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 14,490 | 14,490 | — | — | — | |
| Lead compounds | 12,388 | 116 | — | 12,272 | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4,129 | 4,129 | — | — | — | |
| Mercury compounds | 499 | 76 | — | 422 | 3 | |
| 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 |
|---|---|---|---|---|
| Hydrogen fluoride | — | — | — | 204,710 |
| Zinc compounds | — | 1,194 | — | — |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 41,644 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 58,956 |
| Manganese compounds | — | 2 | — | — |
| Copper compounds | — | 3,064 | — | — |
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 |
|---|---|---|---|---|---|
|
PACIFIC STEEL
CASPER, WY
|
Zinc compounds | — | 1,194 | — | — |
|
PACIFIC STEEL
CASPER, WY
|
Copper compounds | — | 3,064 | — | — |
|
PACIFIC STEEL
CASPER, WY
|
Manganese compounds | — | 2 | — | — |
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 Applicable to Generators of HW: General | Nov 4, 2021 | Jan 3, 2022 | Resolved |
| caa | HPV | Mar 25, 2020 | Apr 19, 2022 | Resolved |
| rcra | Standards for Used Oil: Generators | Aug 6, 2015 | Aug 6, 2015 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Aug 6, 2015 | Aug 6, 2015 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | May 13, 2013 | Jul 17, 2013 | Resolved |
| rcra | Standards for Used Oil: Generators | May 13, 2013 | Jun 12, 2013 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Jul 22, 2011 | Aug 19, 2011 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Jul 22, 2011 | Aug 19, 2011 | Resolved |
| rcra | Standards for Used Oil: Generators | Jul 22, 2011 | Jul 22, 2011 | Resolved |
| rcra | Standards for Used Oil: Generators | May 12, 2009 | Aug 10, 2009 | Resolved |
| rcra | Standards for Used Oil: Generators | May 2, 2006 | Jun 16, 2006 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | May 2, 2006 | Jun 16, 2006 | Resolved |
| rcra | Standards for Used Oil: Generators | Feb 19, 2003 | Feb 24, 2003 | Resolved |
| rcra | Standards for Used Oil: Burners Who Burn Off-Specification Used Oil for Energy Recovery | Feb 19, 2003 | Feb 24, 2003 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Feb 19, 2003 | Feb 24, 2003 | Resolved |
| rcra | Standards Applicable to Transporters of HW: General | Feb 19, 2003 | Jan 24, 2006 | 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.
Judicial
Clean Air Act
· Case 3602819345 · Jan 12, 2022
$30,000
Notice of Violation
Clean Air Act
· Case 3602819343 · Sep 8, 2021
Administrative - Formal
· Case 08-2016-0023 · Feb 24, 2016
Administrative - Formal
· Case 08-2015-0126 · Sep 30, 2015
Administrative - Formal
· Case 08-2011-0081 · May 16, 2011
Letter of Violation (LOV)
RCRA (Hazardous Waste)
· Case RCRA-WYD051842730-001 · Feb 24, 2003
Other facilities in CONVERSE County, WY
CANYON ROAD GRAVEL PIT
UNKNOWN, WY
WOODYS TIP TOP SERVICE
DOUGLAS, WY
SUN OIL PENNINGTON #2
CONVERSE CNTY, WY
MAVERIK 0468
DOUGLAS, WY
RUSSELL CONSTRUCTION COMPANY
DOUGLAS, WY
AARON'S WATER SERVICE, ORIN JCT. FACILITY
DOUGLAS, WY
· Wholesale Trade