Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
ROCKY MOUNTAIN STEEL MILL
Quick Summary
- •Released 57,734 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 $171,500 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
2100 SOUTH FREEWAY
PUEBLO, CO 81004
View on map ↗ - County
- PUEBLO County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 331110
- Inspections
- 37 · last Aug 5, 2025
- Total Penalties
- $171,500 · last Aug 29, 2024
- Registry ID
- 110000467833
How This Compares
#29
of 246 TRI reporters in CO
#1,544
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.
10
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
6
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)
+53% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 24,158 | — |
| 2016 | 18,904 | -22% |
| 2017 | 57,734 | +205% |
| 2018 | 60,153 | +4% |
| 2019 | 60,603 | +1% |
| 2020 | 55,633 | -8% |
| 2021 | 57,277 | +3% |
| 2022 | 48,756 | -15% |
| 2023 | 46,058 | -6% |
| 2024 | 37,073 | -20% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 19,338 | 19,338 | — | — | — | |
| Zinc compounds | 9,821 | 9,014 | 807 | — | 4,574,772 | |
| Manganese compounds | 7,193 | 1,973 | 5,221 | — | 479,645 | |
| Lead compounds | 280 | 206 | 74 | — | 100,620 | |
| Nickel compounds | 219 | 25 | 194 | — | 3,867 | ♦ Carcinogen |
| Mercury compounds | 131 | 131 | — | — | 24 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 83 | 83 | — | — | 27,105 | |
| Dioxin and dioxin-like compounds | 6 | 6 | — | — | — | ♦ Carcinogen |
| Copper compounds | 3 | 3 | — | — | 33,911 |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 24,448 | 24,448 | — | — | — | |
| Zinc compounds | 11,964 | 11,389 | 575 | — | 6,142,621 | |
| Manganese compounds | 8,186 | 3,109 | 5,077 | — | 545,875 | |
| Lead compounds | 698 | 677 | 21 | — | 138,380 | |
| Nickel compounds | 429 | 240 | 189 | — | 4,366 | ♦ Carcinogen |
| Mercury compounds | 165 | 165 | — | — | 27 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 157 | 157 | — | — | 30,587 | |
| Dioxin and dioxin-like compounds | 8 | 8 | — | — | — | ♦ Carcinogen |
| Copper compounds | 3 | 3 | — | — | 47,437 |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 25,594 | 25,594 | — | — | — | |
| Zinc compounds | 13,354 | 12,029 | 1,325 | — | 7,266,917 | |
| Manganese compounds | 8,234 | 3,125 | 5,108 | — | 517,514 | |
| Lead compounds | 792 | 707 | 85 | — | 179,055 | |
| Nickel compounds | 441 | 251 | 190 | — | 4,206 | ♦ Carcinogen |
| Mercury compounds | 173 | 173 | — | — | 26 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 158 | 158 | — | — | 28,793 | |
| Dioxin and dioxin-like compounds | 8 | 8 | — | — | — | ♦ Carcinogen |
| Copper compounds | 3 | 3 | — | — | 42,361 |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 32,667 | 32,667 | — | — | — | |
| Zinc compounds | 15,182 | 12,340 | 2,842 | — | 6,512,981 | |
| Manganese compounds | 7,818 | 3,051 | 4,767 | — | 478,753 | |
| Lead compounds | 819 | 740 | 80 | — | 158,703 | |
| Nickel compounds | 435 | 258 | 177 | — | 3,878 | ♦ Carcinogen |
| Mercury compounds | 179 | 179 | — | — | 24 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 169 | 169 | — | — | 27,213 | |
| Dioxin and dioxin-like compounds | 8 | 8 | — | — | — | ♦ Carcinogen |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 32,250 | 32,250 | — | — | — | |
| Zinc compounds | 13,969 | 12,440 | 1,529 | — | 6,614,866 | |
| Manganese compounds | 7,713 | 3,097 | 4,616 | — | 504,121 | |
| Lead compounds | 916 | 733 | 183 | — | 154,052 | |
| Nickel compounds | 435 | 263 | 172 | — | 4,085 | ♦ Carcinogen |
| Mercury compounds | 181 | 181 | 0 | — | 25 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 161 | 161 | — | — | 27,897 | |
| Dioxin and dioxin-like compounds | 8 | 8 | — | — | — | ♦ Carcinogen |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 35,430 | 35,430 | — | — | — | |
| Zinc compounds | 14,778 | 13,723 | 1,055 | — | 7,715,492 | |
| Manganese compounds | 8,581 | 3,577 | 5,004 | — | 565,124 | |
| Lead compounds | 949 | 802 | 147 | — | 201,821 | |
| Nickel compounds | 477 | 291 | 186 | — | 4,506 | ♦ Carcinogen |
| Mercury compounds | 199 | 199 | — | — | 27 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 180 | 180 | — | — | 30,449 | |
| Dioxin and dioxin-like compounds | 9 | 9 | — | — | — | ♦ Carcinogen |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 34,913 | 34,913 | — | — | — | |
| Zinc compounds | 14,531 | 13,493 | 1,038 | — | 7,601,591 | |
| Manganese compounds | 8,823 | 3,613 | 5,210 | — | 541,523 | |
| Lead compounds | 1,014 | 796 | 218 | — | 201,018 | |
| Nickel compounds | 482 | 288 | 194 | — | 4,299 | ♦ Carcinogen |
| Mercury compounds | 196 | 196 | — | — | 26 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 185 | 185 | — | — | 30,065 | |
| Dioxin and dioxin-like compounds | 9 | 9 | — | — | — | ♦ Carcinogen |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrogen fluoride | 34,977 | 34,977 | — | — | — | |
| Zinc compounds | 12,269 | 12,141 | 128 | — | 6,868,089 | |
| Manganese compounds | 8,706 | 3,274 | 5,432 | — | 505,310 | |
| Lead compounds | 960 | 722 | 238 | — | 189,536 | |
| Nickel compounds | 462 | 260 | 202 | — | 4,011 | ♦ Carcinogen |
| Mercury compounds | 183 | 176 | 7 | — | 24 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 169 | 169 | — | — | 28,049 | |
| Dioxin and dioxin-like compounds | 8 | 8 | — | — | — | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Zinc compounds | 9,797 | 9,498 | 299 | — | 4,874,132 | |
| Manganese compounds | 7,778 | 2,694 | 5,084 | — | 386,002 | |
| Lead compounds | 652 | 578 | 74 | — | 138,079 | |
| Nickel compounds | 393 | 204 | 189 | — | 3,042 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 140 | 140 | — | — | 21,247 | |
| Mercury compounds | 138 | 138 | — | — | 18 | |
| Dioxin and dioxin-like compounds | 7 | 7 | — | — | — | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Zinc compounds | 13,018 | 12,948 | 70 | — | 6,997,408 | |
| Manganese compounds | 9,497 | 3,438 | 6,059 | — | 530,669 | |
| Lead compounds | 766 | 766 | — | — | 302,763 | |
| Nickel compounds | 500 | 275 | 225 | — | 4,205 | ♦ Carcinogen |
| Mercury compounds | 188 | 188 | — | — | 25 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 180 | 180 | — | — | 29,401 | |
| Dioxin and dioxin-like compounds | 9 | 9 | — | — | — | ♦ 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 |
|---|---|---|---|---|
| Nickel compounds | — | 3,603 | — | — |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | 25,434 | — | — |
| Copper compounds | — | 33,911 | — | — |
| Manganese compounds | — | 421,773 | — | — |
| Mercury compounds | — | 24 | — | — |
| Lead compounds | — | 99,811 | — | — |
| Zinc compounds | — | 4,568,485 | — | — |
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 |
|---|---|---|---|---|---|
|
ZINC RESOURCES LLC
VICTORIA, TX
|
Copper compounds | — | 33,911 | — | — |
|
ZINC RESOURCES LLC
VICTORIA, TX
|
Lead compounds | — | 99,811 | — | — |
|
MIDWAY LANDFILL
FOUNTAIN, CO
|
Lead compounds | 809 | — | — | — |
|
ZINC RESOURCES LLC
VICTORIA, TX
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | 25,434 | — | — |
|
MIDWAY LANDFILL
FOUNTAIN, CO
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 1,668 | — | — | — |
|
SOUTHSIDE LANDFILL
PUEBLO, CO
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 3 | — | — | — |
|
MIDWAY LANDFILL
FOUNTAIN, CO
|
Nickel compounds | 264 | — | — | — |
|
ZINC RESOURCES LLC
VICTORIA, TX
|
Nickel compounds | — | 3,603 | — | — |
|
MIDWAY LANDFILL
FOUNTAIN, CO
|
Manganese compounds | 57,873 | — | — | — |
|
ZINC RESOURCES LLC
VICTORIA, TX
|
Manganese compounds | — | 421,773 | — | — |
|
ZINC RESOURCES LLC
VICTORIA, TX
|
Mercury compounds | — | 24 | — | — |
|
MIDWAY LANDFILL
FOUNTAIN, CO
|
Mercury compounds | 0 | — | — | — |
|
MIDWAY LANDFILL
FOUNTAIN, CO
|
Zinc compounds | 6,287 | — | — | — |
|
ZINC RESOURCES LLC
VICTORIA, TX
|
Zinc compounds | — | 4,568,485 | — | — |
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: General | Aug 29, 2019 | Sep 11, 2019 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Aug 29, 2019 | Sep 11, 2019 | Resolved |
| cwa | Effluent Violations - Failed Toxicity Test | Jul 1, 2018 | Dec 20, 2018 | Resolved |
| caa | FRV | Sep 24, 2016 | — | Open |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Sep 27, 2011 | Sep 28, 2011 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Special Provisions for Cleanup | Apr 8, 2011 | Mar 12, 2013 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Special Provisions for Cleanup | Oct 10, 2008 | Jan 13, 2010 | Resolved |
| rcra | Land Disposal Restrictions: General | Apr 17, 2007 | May 18, 2007 | Resolved |
| rcra | Standards Applicable to Generators of HW: Manifest Requirements Applicable to Small and Large Quantity Generators | Apr 17, 2007 | May 18, 2007 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Apr 17, 2007 | May 18, 2007 | Resolved |
| rcra | Standards for Used Oil: Generators | Apr 17, 2007 | May 18, 2007 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Sep 1, 2005 | Dec 20, 2005 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Sep 1, 2005 | Dec 20, 2005 | Resolved |
| rcra | Standards for Used Oil: Generators | Sep 1, 2005 | Dec 20, 2005 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Feb 20, 2004 | Oct 15, 2004 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Jun 24, 2003 | Jun 25, 2003 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General Facility Standards | Sep 30, 2002 | Jan 24, 2003 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Jul 23, 1996 | Sep 6, 1996 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Sep 11, 1995 | Nov 30, 1995 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Nov 22, 1993 | Dec 20, 1993 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Sep 25, 1992 | Jan 12, 1993 | Resolved |
| rcra | Violation of a formal enforcement agreement or order. (3008(a) or 3013) | May 5, 1989 | Feb 26, 1992 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Financial Requirements | May 5, 1989 | Feb 26, 1992 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Nov 24, 1987 | May 24, 1988 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Mar 4, 1986 | Jun 13, 1988 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Dec 16, 1980 | Oct 3, 1981 | 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 |
|---|---|---|---|---|---|---|
| Oil and grease | DMR, Limited - Numeric Violation | 54.48 kg/d | 29.06 | +88% | Jul 2025 | Resolved |
| Oil and grease | DMR, Limited - Numeric Violation | 71.19 kg/d | 29.06 | +145% | Jun 2025 | Resolved |
| Oil and grease | DMR, Limited - Numeric Violation | 165.85 kg/d | 29.06 | +471% | Apr 2025 | Resolved |
| Oil and grease | DMR, Limited - Numeric Violation | 1,492.75 kg/d | 1,116.84 | +34% | Apr 2025 | Open |
| Oil and grease | DMR, Limited - Numeric Violation | 274.22 kg/d | 29.06 | +844% | Mar 2025 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,861.76 kg/d | 1,601.26 | +16% | Jul 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 10,317.06 kg/d | 1,601.26 | +544% | Jun 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 59.20 MGD | 57.00 | +4% | Jun 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 9,624.53 kg/d | 1,601.26 | +501% | Jun 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,839.15 kg/d | 1,601.26 | +15% | Apr 2023 | Open |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 24.00 toxic | 48.00 | +50% | Dec 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 7,966.38 kg/d | 1,601.26 | +398% | Sep 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,850.00 kg/d | 1,601.26 | +16% | Mar 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 4,476.03 kg/d | 1,601.26 | +180% | Sep 2021 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 5.18 kg/d | 4.72 | +10% | Mar 2021 | Open |
| Oil and grease | DMR, Limited - Numeric Violation | 248.81 kg/d | 29.06 | +756% | Feb 2021 | Open |
| Oil and grease | DMR, Limited - Numeric Violation | 1,990.49 kg/d | 1,116.84 | +78% | Feb 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 7,215.10 kg/d | 1,601.26 | +351% | Nov 2020 | Open |
| Oil and grease | DMR, Limited - Numeric Violation | 81.40 kg/d | 29.06 | +180% | Apr 2020 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 5.58 kg/d | 4.72 | +18% | Jan 2020 | Open |
| Oil and grease | DMR, Limited - Numeric Violation | 62.42 kg/d | 29.06 | +115% | Sep 2019 | Open |
| Zinc, total [as Zn] | DMR, Limited - Numeric Violation | 6.82 kg/d | 4.72 | +45% | Dec 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 3,132.78 kg/d | 1,601.26 | +96% | Oct 2016 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 12,200.16 kg/d | 1,601.26 | +662% | Jun 2015 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 64.80 MGD | 57.00 | +14% | Jun 2015 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 11,408.48 kg/d | 1,601.26 | +612% | May 2015 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,856.77 kg/d | 1,601.26 | +16% | Apr 2015 | 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 08-1987-0194
COMPLIANCE ADVISORY
RCRA (Hazardous Waste)
· Case RCRA-COD007057961-5 · Aug 29, 2019
Administrative - Formal
Clean Air Act
· Case 3601267017 · Sep 27, 2017
$30,100
Notice of Violation
Clean Air Act
· Case 3601119354 · Jul 5, 2017
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-COD007057961-001 · Oct 25, 2011
Administrative - Formal
· Case 08-2010-0119 · Jul 20, 2010
$500
Administrative - Formal
· Case 08-2005-0225 · Dec 21, 2005
$13,000
Judicial
· Case 08-2002-0056 · Nov 26, 2003
$450,000
Administrative - Formal
· Case HQ-2001-6019 · Dec 11, 2001
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-COD007057961-000 · Jul 23, 1996
FINAL 3008(A) COMPLIANCE ORDER
RCRA (Hazardous Waste)
· Case RCRA-COD007057961-006 · Jan 22, 1990
Judicial
· Case 08-1987-0121 · Jun 9, 1988
$15,000
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-COD007057961-005 · Mar 3, 1988
INITIAL 3008(A) COMPLIANCE
RCRA (Hazardous Waste)
· Case RCRA-COD007057961-002 · Feb 5, 1988
FINAL 3008(A) COMPLIANCE ORDER
RCRA (Hazardous Waste)
· Case RCRA-COD007057961-003 · Sep 3, 1981
INITIAL 3008(A) COMPLIANCE
RCRA (Hazardous Waste)
· Case RCRA-COD007057961-004 · Jun 15, 1981
$5,500
Judicial
· Case 08-1976-0001 · Jul 19, 1978
Other facilities in PUEBLO County, CO
CF ALTITUDE - ALTA CONVIENCE 3109
PUEBLO, CO
· Retail Trade
PUEBLO FIRE STATION #6
PUEBLO, CO
MIDWEST FABRICATION AND STEEL LLC
PUEBLO, CO
SWALLOWS CHARTER ACADEMY
PUEBLO, CO
CEDARWOOD PIT
PUEBLO COUNTY, CO