EPA TRI Facility · Metal Mining
Freeport-McMoran Sierrita Inc
Green Valley, AZ · Parent: Freeport-McMoran Inc
- Total releases
- 10.0M lbs
- Chemicals reported
- 18
- Carcinogens
- 4
- Primary pathway
- Land Disposal
LAND Form-R mix
Freeport-McMoran Sierrita Inc: how the 10.0M lbs splits
10.0M lbs across all reported pathways
- Land Disposal 9.8M lbs 98.4%
- Air Releases 129.4K lbs 1.3%
- Off-site Transfers 29.5K lbs 0.3%
Freeport-McMoran Sierrita Inc's 10.0M lbs Form-R total is LAND - land disposal is 98.4% of the bar. Next segment: air releases at 1.3%. Leading chemical by pounds: Lead And Lead Compounds.
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
HEAVY volume LAND pathway CARC-LEAN
Freeport-McMoran Sierrita Inc is an EPA Toxics Release Inventory reporter in Green Valley, AZ, in the metal mining sector. It reported 2.5M lbs of releases across 14 chemicals in 2023, and 10.0M lbs in total across its 2019-2023 reporting years. That ranks 210 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Arizona's 288 reporting TRI sites, pounds #1 is not chemical-count #1. Freeport-McMoran Sierrita Inc is pounds #8 and chemical-count #8 at 10.0M lbs. Freeport-McMoran Miami Inc leads reported pounds (129.3M lbs) at 17 chemicals (chemical-count #10). Freeport-McMoran Morenci Inc leads chemical count at 33 chemicals (36.9M lbs, pounds #4). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Asarco LLC Mission Complex; U.S. Air Force Plant 44 - Operated By Raytheon; Learjet Inc; Swan Rd. Asphalt Plant. Similar-scale Metal Mining peers outside Arizona: St Lawrence Zinc Co Balmat 4 Mine & Mill; Bald Mountain Mine; Coeur Alaska Inc Kensington Gold Project; Wharf Resources. Other Freeport-McMoran Inc sites in this extract: Freeport-McMoran Miami Inc; Freeport-McMoran Morenci Inc; Freeport-McMoran Bagdad Inc; Climax Molybdenum Co. Largest disclosed chemicals by pounds: Lead And Lead Compounds; Manganese; Chromium; Manganese And Manganese Compounds.
Freeport-McMoran Sierrita Inc stamps HEAVY volume with a dominant LAND pathway (98.4% land disposal) across 18 chemicals · 4 carcinogen-classified. Cumulative Form-R extract: 10.0M lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include St Lawrence Zinc Co Balmat 4 Mine & Mill and Bald Mountain Mine.
Freeport-McMoran Sierrita Inc vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
10.0M lbs Top 1% higher than 99% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Freeport-McMoran Sierrita Inc inside Pima's TRI pounds
Among the 103 Metal Mining facilities in this database, Freeport-McMoran Sierrita Inc reports the 35th-largest volume (10.0M lbs). This one site accounts for 36.3% of every pound reported in Pima. Scale peers outside Arizona include St Lawrence Zinc Co Balmat 4 Mine & Mill and Bald Mountain Mine.
County-dominant here means ≥25% of Pima's reported pounds (27.4M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Freeport-McMoran Sierrita Inc's total reported releases rose from 2.2 million lb in 2022 to 2.5 million lb in 2023, based on EPA TRI filings.
- Freeport-McMoran Sierrita Inc's off-site transfers fell from 28.7 thousand lb in 2022 to 12 lb in 2023, based on EPA TRI filings.
- Freeport-McMoran Sierrita Inc's air releases rose from 23.4 thousand lb in 2022 to 42.5 thousand lb in 2023, based on EPA TRI filings.
- Freeport-McMoran Sierrita Inc's land releases rose from 2.1 million lb in 2022 to 2.4 million lb in 2023, based on EPA TRI filings.
Freeport-McMoran Sierrita Inc Form-R facts
Compare this facility
See how Freeport-McMoran Sierrita Inc stacks up against nearby facilities and the typical reporter.
42% less than the comparison
50% more than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Freeport-McMoran Sierrita Inc releases toxic chemicals into the environment. Total: 10.0M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 23% (2.0M lbs to 2.5M lbs).
Freeport-McMoran Sierrita Inc: annual Form-R pounds
HEAVY site · LAND pathway · TRI years 2019–2023
- 2019
- 2020
- 2021
- 2022
- 2023
What this shows Freeport-McMoran Sierrita Inc year-over-year reported totals (increased by 23% from 2019 to 2023). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Lead And Lead Compounds.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 2.0M lbs | 16 |
| 2020 | 1.5M lbs | 14 |
| 2021 | 1.8M lbs | 15 |
| 2022 | 2.2M lbs | 15 |
| 2023 | 2.5M lbs | 14 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 4 of 18 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Lead And Lead Compounds | 5.5M lbs | - |
| Manganese | 1.2M lbs | - |
| Chromium | 956.0K lbs | - |
| Manganese And Manganese Compounds | 570.5K lbs | - |
| Cobalt | 423.0K lbs | Carcinogen |
| Arsenic | 420.0K lbs | Carcinogen |
| Nickel | 359.0K lbs | Carcinogen |
| Copper And Copper Compounds | 258.1K lbs | - |
| Zinc compounds | 96.0K lbs | - |
| Molybdenum trioxide | 66.5K lbs | Carcinogen |
| n-Butyl alcohol | 61.4K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 21.9K lbs | - |
| Ammonia | 21.7K lbs | - |
| Mercury compounds | 13.1K lbs | - |
| Chlorine | 3.8K lbs | - |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 2.1K lbs | - |
| Sodium nitrite | 0 lbs | - |
| Butyraldehyde | 0 lbs | - |
Freeport-McMoran Sierrita Inc · LAND-pathway site
Nearest TRI Facilities to Freeport-McMoran Sierrita Inc
Closest other reporters in Arizona - including Asarco LLC Mission Complex, U.S. Air Force Plant 44 - Operated By Raytheon, Learjet Inc, ordered by distance.
Showing 8 of 287 other reporting facilities in Arizona.
Similar Metal Mining Facilities
Other Metal Mining facilities with similar total release volumes (±80%), outside Arizona - e.g. St Lawrence Zinc Co Balmat 4 Mine & Mill, Bald Mountain Mine, Coeur Alaska Inc Kensington Gold Project.
Compare beyond Arizona
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Freeport-McMoran Sierrita Inc on cumulative reported pounds (10.0M lbs) and distinct chemical count (18). Release-pound peers include Pilgrim's Pride Corp Mt Pleasant Complex, Cpi USA North Carolina LLC, Nd Paper Inc. - Rumford Div. Chemical-count peers include Pride Solvents & Chemical Co of New Jersey, Mpm Silicones LLC, Max Environmental -- Yukon Facility. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
- Pilgrim's Pride Corp Mt Pleasant Complex Mount Pleasant, TX · Food 9.9M lbs reported
- Cpi USA North Carolina LLC Southport, NC · Electric Utilities 9.9M lbs reported
- Nd Paper Inc. - Rumford Div Rumford, ME · Paper 9.8M lbs reported
- King Ranch Gas Plant Kingsville, TX · Natural Gas Processing 9.8M lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
- Pride Solvents & Chemical Co of New Jersey Avenel, NJ · Chemical Wholesalers 18 chemicals
- Mpm Silicones LLC Waterford, NY · Chemicals 18 chemicals
- Max Environmental -- Yukon Facility Yukon, PA · Hazardous Waste 18 chemicals
- Desotec US LLC Darlington Facility Darlington, PA · Hazardous Waste 18 chemicals
Other Freeport-McMoran Inc Facilities
Same-parent TRI sites ranked by reported releases - including Freeport-McMoran Miami Inc, Freeport-McMoran Morenci Inc, Freeport-McMoran Bagdad Inc.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Lead And Lead Compounds, Manganese, Chromium, Manganese And Manganese Compounds; nearby reporters include Asarco LLC Mission Complex. Freeport-McMoran Sierrita Inc stamps HEAVY volume · LAND pathway · CARC-LEAN carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Freeport-McMoran Sierrita Inc TRI extract (HEAVY · LAND · CARC-LEAN · lead Lead And Lead Compounds) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Freeport-McMoran Sierrita Inc totals are self-reported EPCRA §313 estimates for Green Valley, AZ, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 212230 · Metal Mining. 36.3% of Pima TRI pounds in this extract. Nearest ABS peer: Pilgrim's Pride Corp Mt Pleasant Complex (Δ 45.6K lbs). Pounds ≠ exposure.
Freeport-McMoran Sierrita Inc stamps HEAVY volume · LAND pathway · CARC-LEAN · lead Lead And Lead Compounds. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov