Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
ASARCO LLC MISSION MINE COMPLEX
Quick Summary
- •Released 5,021,595 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
-
4201 W PIMA MINE RD
SAHUARITA, AZ 85629
View on map ↗ - County
- PIMA County
- Industry
- Mining, Quarrying, and Oil and Gas Extraction
- NAICS (North American Industry Classification)
- 212230
- Inspections
- 3 · last May 1, 2024
- Total Penalties
- $0 · last Oct 15, 2010
- Registry ID
- 110000471864
How This Compares
#5
of 245 TRI reporters in AZ
#31
of 555 TRI reporters in Mining, Quarrying, and Oil and Gas Extraction
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
12
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)
-52% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 4,357,668 | — |
| 2016 | 4,247,028 | -3% |
| 2017 | 5,021,595 | +18% |
| 2018 | 8,775,888 | +75% |
| 2019 | 3,824,068 | -56% |
| 2020 | 2,147,985 | -44% |
| 2021 | 2,429,417 | +13% |
| 2022 | 6,416,123 | +164% |
| 2023 | 2,243,885 | -65% |
| 2024 | 2,103,256 | -6% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Naphthalene | — | — | — | — | — | ♦ Carcinogen |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 1,610,807 | 9 | — | 1,610,798 | — | |
| Manganese | 258,407 | 5 | — | 258,402 | — | |
| Nickel | 166,024 | 0 | — | 166,024 | — | ♦ Carcinogen |
| Chromium | 63,667 | 0 | — | 63,667 | — | |
| Copper compounds | 2,805 | 7 | — | 2,798 | — | |
| Mercury compounds | 875 | 0 | — | 875 | — | |
| Ammonia | 671 | 671 | — | — | — |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Naphthalene | — | — | — | — | — | ♦ Carcinogen |
| Lead compounds | 1,721,114 | 9 | 1 | 1,721,105 | — | |
| Chromium | 187,970 | 0 | 0 | 187,970 | — | |
| Manganese | 173,305 | 5 | — | 173,300 | — | |
| Nickel | 157,471 | 0 | — | 157,471 | — | ♦ Carcinogen |
| Copper compounds | 2,570 | 7 | 1 | 2,562 | — | |
| Mercury compounds | 853 | 0 | — | 853 | — | |
| Ammonia | 601 | 601 | — | — | — |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 5,761,902 | 12 | 46 | 5,761,844 | — | |
| Chromium | 296,370 | 0 | 1 | 296,368 | — | |
| Manganese | 179,232 | 5 | — | 179,227 | — | |
| Nickel | 174,416 | 0 | — | 174,416 | — | ♦ Carcinogen |
| Copper compounds | 2,822 | 7 | 162 | 2,653 | — | |
| Mercury compounds | 852 | 0 | 0 | 852 | — | |
| Ammonia | 530 | 530 | — | — | — |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 1,768,928 | 7 | — | 1,768,920 | — | |
| Chromium | 296,201 | 0 | — | 296,200 | — | |
| Manganese | 175,155 | 5 | — | 175,150 | — | |
| Nickel | 170,881 | 0 | — | 170,881 | — | ♦ Carcinogen |
| Arsenic | 14,675 | 1 | — | 14,675 | — | ♦ Carcinogen |
| Copper compounds | 2,208 | 70 | — | 2,138 | — | |
| Mercury compounds | 911 | 0 | — | 911 | — | |
| Ammonia | 460 | 460 | — | — | — |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 1,402,257 | 10 | — | 1,402,247 | — | |
| Copper compounds | 285,731 | 219 | — | 285,512 | — | |
| Chromium | 245,642 | 0 | — | 245,642 | — | |
| Manganese | 77,204 | 5 | — | 77,200 | — | |
| Nickel | 70,080 | 0 | — | 70,080 | — | ♦ Carcinogen |
| Cobalt | 32,891 | 0 | — | 32,890 | — | ♦ Carcinogen |
| Arsenic | 32,831 | 1 | — | 32,830 | — | ♦ Carcinogen |
| Mercury compounds | 900 | 0 | — | 900 | — | |
| Ammonia | 449 | 449 | — | — | — |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 2,203,266 | 7 | — | 2,203,259 | 0 | |
| Copper compounds | 1,255,157 | 98 | — | 1,255,059 | — | |
| Chromium | 188,833 | 0 | — | 188,833 | 0 | |
| Manganese | 79,188 | 5 | — | 79,184 | — | |
| Nickel | 68,954 | 0 | — | 68,954 | — | ♦ Carcinogen |
| Arsenic | 27,355 | 1 | — | 27,355 | 0 | ♦ Carcinogen |
| Mercury compounds | 820 | 0 | — | 820 | — | |
| Ammonia | 495 | 495 | — | — | — |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 5,107,885 | 2 | 1 | 5,107,882 | — | |
| Copper compounds | 3,133,503 | 384 | 54 | 3,133,065 | — | |
| Chromium | 301,510 | 0 | — | 301,509 | — | |
| Nickel | 150,577 | 0 | — | 150,577 | — | ♦ Carcinogen |
| Manganese | 81,046 | 5 | — | 81,042 | — | |
| Mercury compounds | 922 | 0 | 0 | 922 | — | |
| Ammonia | 445 | 445 | — | — | — |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 4,653,160 | 25 | — | 4,653,136 | 8 | |
| Chromium | 197,265 | 0 | — | 197,265 | 0 | |
| Nickel | 132,140 | 0 | — | 132,139 | — | ♦ Carcinogen |
| Manganese | 32,348 | 12 | — | 32,336 | — | |
| Copper compounds | 5,097 | 189 | — | 4,908 | — | |
| Mercury compounds | 942 | 0 | — | 942 | — | |
| Ammonia | 644 | 644 | — | — | — |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 3,865,058 | 21 | — | 3,865,037 | — | |
| Chromium | 211,677 | 0 | — | 211,677 | — | |
| Nickel | 130,679 | 0 | — | 130,679 | — | ♦ Carcinogen |
| Manganese | 33,015 | 12 | — | 33,004 | — | |
| Copper compounds | 4,901 | 179 | — | 4,722 | — | |
| Mercury compounds | 976 | 0 | — | 976 | 0 | |
| Ammonia | 722 | 722 | — | — | — |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | — | — | — | — | — | |
| Lead compounds | 3,985,260 | 2 | 36 | 3,985,223 | 0 | |
| Chromium | 172,425 | 0 | 4 | 172,421 | 0 | |
| Nickel | 136,482 | 0 | — | 136,481 | — | ♦ Carcinogen |
| Manganese | 53,161 | 12 | — | 53,150 | — | |
| Copper compounds | 8,539 | 270 | 88 | 8,181 | — | |
| Mercury compounds | 963 | 0 | 0 | 962 | — | |
| Ammonia | 838 | 838 | — | — | — |
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 |
|---|
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 |
|---|---|---|---|---|---|
|
CLEAN HARBORS DEER PARK
LA PORTE, TX
|
Chromium | — | 0 | — | — |
|
CLEAN HARBORS EL DORADO, LLC
EL DORADO, AR
|
Lead compounds | — | 8 | — | — |
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 unachieved and not reported | Apr 1, 2025 | May 2, 2025 | Resolved |
| cwa | Schedule Event unachieved and not reported | Apr 1, 2024 | May 2, 2024 | Resolved |
| cwa | Schedule Event unachieved and not reported | Apr 1, 2023 | May 2, 2023 | Resolved |
| cwa | Schedule Event unachieved and not reported | Apr 1, 2022 | May 2, 2022 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Sep 1, 2015 | Dec 8, 2015 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Mar 5, 2012 | Jun 26, 2012 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | Sep 21, 2006 | Oct 20, 2006 | Resolved |
| rcra | Standards for Used Oil: Generators | Sep 21, 2006 | Oct 19, 2006 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Aug 14, 1997 | Jan 23, 1998 | 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 |
|---|---|---|---|---|---|---|
| Copper, total recoverable | DMR, Limited - Numeric Violation | 11.00 mg/L | 0.09 | +12,691% | Aug 2022 | Resolved |
| Zinc, total recoverable | DMR, Limited - Numeric Violation | 6.00 mg/L | 3.60 | +67% | Aug 2022 | Open |
| Chromium, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.10 | +20% | Aug 2022 | Open |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 2.90 mg/L | 0.02 | +13,082% | Aug 2022 | Resolved |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.02 | +73% | Jul 2022 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.33 mg/L | 0.09 | +284% | Jul 2022 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 4.50 mg/L | 0.09 | +5,133% | Oct 2018 | Open |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.95 mg/L | 0.02 | +4,218% | Oct 2018 | Open |
| Chromium, total recoverable | DMR, Limited - Numeric Violation | 0.17 mg/L | 0.15 | +16% | Oct 2018 | Open |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.26 mg/L | 0.02 | +1,100% | Sep 2015 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 1.29 mg/L | 0.09 | +1,400% | Sep 2015 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 4.23 mg/L | 0.09 | +4,819% | Mar 2015 | Open |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.96 mg/L | 0.02 | +4,255% | Mar 2015 | Open |
| Chromium, total recoverable | DMR, Limited - Numeric Violation | 0.21 mg/L | 0.15 | +42% | Mar 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.
VERBAL INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-AZT000623678-001 · Jul 15, 2020
Civil Judicial Action
Clean Water Act
· Case AZ-N00000024 · Apr 14, 2010
Administrative - Formal
· Case 09-2002-0064 · Jun 20, 2002
CWA 309A AO For Compliance
Clean Water Act
· Case 09-2002-N015 · Jun 20, 2002
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