EPA TRI Facility · Primary Metals
Mountain Ridge Metals Llc.
Millersburg, PA
- Total releases
- 73.9K lbs
- Chemicals reported
- 3
- Latest report
- 2023
- Primary pathway
- Air Releases
AIR Form-R mix
Mountain Ridge Metals Llc.: how the 79.0K lbs splits
79.0K lbs across all reported pathways
- Air Releases 79.0K lbs 100.0%
Mountain Ridge Metals Llc.'s 79.0K lbs Form-R total is AIR - air releases is 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases. Leading chemical by pounds: Xylene (mixed isomers).
LIGHT volume AIR pathway CLEAN
Mountain Ridge Metals Llc. is an EPA Toxics Release Inventory reporter in Millersburg, PA, in the primary metals sector. It reported 5.1K lbs of releases across 2 chemicals in 2024, and 73.9K lbs in total across its 2019-2024 reporting years. That ranks 5,242 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Pennsylvania's 1,010 reporting TRI sites, pounds #1 is not chemical-count #1. Mountain Ridge Metals Llc. is pounds #207 and chemical-count #442 at 73.9K lbs. Max Environmental -- Yukon Facility leads reported pounds (34.8M lbs) at 18 chemicals (chemical-count #24). Keystone Cement Co leads chemical count at 53 chemicals (155.4K lbs, pounds #149). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Dauphin Precision Tool LLC; Papetti's Hygrade Egg Products Inc; Wenger Feeds Llc-Spring Glen (f/k/a Wenger Feed Mill Inc); Master Woodcraft Cabinetry LLC. Similar-scale Primary Metals peers outside Pennsylvania: Rock River Fabrication; Nemak USA Inc.; East Jordan Foundry LLC; Nucor Steel Longview LLC. Largest disclosed chemicals by pounds: Xylene (mixed isomers); Certain glycol ethers; Diisocyanates.
Mountain Ridge Metals Llc. stamps LIGHT volume with a dominant AIR pathway (100.0% air releases) across 3 chemicals. Cumulative Form-R extract: 73.9K lbs (2019–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Rock River Fabrication and Nemak USA Inc..
Mountain Ridge Metals Llc. vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
74K lbs Top 20% higher than 80% 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
Mountain Ridge Metals Llc.: Xylene (mixed isomers)-led volume
Among the 1,603 Primary Metals facilities in this database, Mountain Ridge Metals Llc. reports the 448th-largest volume (73.9K lbs). Its reported volume is concentrated rather than spread: Xylene (mixed isomers) alone is 74.4% of the total. Scale peers outside Pennsylvania include Rock River Fabrication and Nemak USA Inc..
Concentrated means ≥60% of Mountain Ridge Metals Llc.'s pounds in one chemical - here Xylene (mixed isomers) at 74.4%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Mountain Ridge Metals Llc.'s total reported releases fell from 10.7 thousand lb in 2022 to 7.5 thousand lb in 2023, based on EPA TRI filings.
- Mountain Ridge Metals Llc.'s air releases fell from 10.7 thousand lb in 2022 to 7.5 thousand lb in 2023, based on EPA TRI filings.
Mountain Ridge Metals Llc. Form-R facts
Compare this facility
See how Mountain Ridge Metals Llc. stacks up against nearby facilities and the typical reporter.
About the same as the comparison
3.0× 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 Mountain Ridge Metals Llc. releases toxic chemicals into the environment. Total: 79.0K lbs.
Emissions Trend Summary
From 2019 to 2024, total releases decreased by 78% (22.8K lbs to 5.1K lbs).
Mountain Ridge Metals Llc.: annual Form-R pounds
LIGHT site · AIR pathway · TRI years 2019–2024
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
- 2024 0
What this shows Mountain Ridge Metals Llc. year-over-year reported totals (decreased by 78% from 2019 to 2024). 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: Xylene (mixed isomers).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 22.8K lbs | 3 |
| 2020 | 21.4K lbs | 3 |
| 2021 | 11.5K lbs | 2 |
| 2022 | 10.7K lbs | 2 |
| 2023 | 7.5K lbs | 2 |
| 2024 | 5.1K lbs | 2 |
Chemical Releases
Aggregated across all reporting years (2019–2024). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Xylene (mixed isomers) | 58.8K lbs | - |
| Certain glycol ethers | 20.2K lbs | - |
| Diisocyanates | 0 lbs | - |
Mountain Ridge Metals Llc. · AIR-pathway site
Nearest TRI Facilities to Mountain Ridge Metals Llc.
Closest other reporters in Pennsylvania - including Dauphin Precision Tool LLC, Papetti's Hygrade Egg Products Inc, Wenger Feeds Llc-Spring Glen (f/k/a Wenger Feed Mill Inc), ordered by distance.
Showing 8 of 1,009 other reporting facilities in Pennsylvania.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside Pennsylvania - e.g. Rock River Fabrication, Nemak USA Inc., East Jordan Foundry LLC.
Compare beyond Pennsylvania
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Mountain Ridge Metals Llc. on cumulative reported pounds (73.9K lbs) and distinct chemical count (3). Release-pound peers include Nascote Industries, Darigold - Lynden, Hexion Luling Facility. Chemical-count peers include Industrial C&s of Pr LLC Arecibo Plant, Island Litho Corp., Fenwal International Inc. 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.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
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 Xylene (mixed isomers), Certain glycol ethers, Diisocyanates; nearby reporters include Dauphin Precision Tool LLC. Mountain Ridge Metals Llc. stamps LIGHT volume · AIR pathway · CLEAN 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 Mountain Ridge Metals Llc. TRI extract (LIGHT · AIR · CLEAN · lead Xylene (mixed isomers)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Mountain Ridge Metals Llc. totals are self-reported EPCRA §313 estimates for Millersburg, PA, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 331318 · Primary Metals. 6.8% of Dauphin TRI pounds in this extract. Nearest ABS peer: Nascote Industries (Δ 75 lbs). Pounds ≠ exposure.
Mountain Ridge Metals Llc. stamps LIGHT volume · AIR pathway · CLEAN · lead Xylene (mixed isomers). 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