EPA TRI Facility · Electrical Equipment
Mersen USA Gs Corp. - St Marys
Saint Marys, PA · Parent: Mersen USA Bn Corp
- Total releases
- 42.2K lbs
- Chemicals reported
- 6
- Carcinogens
- 3
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Mersen USA Gs Corp. - St Marys: how the 44.6K lbs splits
44.6K lbs across all reported pathways
- Off-site Transfers 42.3K lbs 94.9%
- Air Releases 2.3K lbs 5.1%
- Water Discharges 23 lbs 0.1%
- Land Disposal 0 lbs <0.1%
Mersen USA Gs Corp. - St Marys's 44.6K lbs Form-R total is OFFSITE - off-site transfers is 94.9% of the bar. Next segment: air releases at 5.1%. Leading chemical by pounds: Polycyclic aromatic 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.
LIGHT volume OFFSITE pathway CARC-HEAVY
Mersen USA Gs Corp. - St Marys is an EPA Toxics Release Inventory reporter in Saint Marys, PA, in the electrical equipment sector. It reported 2.4K lbs of releases across 5 chemicals in 2024, and 42.2K lbs in total across its 2019-2024 reporting years. That ranks 6,507 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. Mersen USA Gs Corp. - St Marys is pounds #267 and chemical-count #195 at 42.2K 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: Sgl Carbon LLC; Speer Carbon Co LLC; Graftech USA LLC; Morgan Advanced Materials St Marys Site. Similar-scale Electrical Equipment peers outside Pennsylvania: Ilsco; Eaton Intelligent Power Ltd; Virginia Transformer Corp; Abb Motors & Mechanical Inc.. Largest disclosed chemicals by pounds: Polycyclic aromatic compounds; Naphthalene; Phenanthrene; Benzo[g,h,i]perylene.
Mersen USA Gs Corp. - St Marys stamps LIGHT volume with a dominant OFFSITE pathway (94.9% off-site transfers) across 6 chemicals · 3 carcinogen-classified. Cumulative Form-R extract: 42.2K lbs (2019–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Ilsco and Eaton Intelligent Power Ltd.
Mersen USA Gs Corp. - St Marys vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
42K lbs Top 25% higher than 75% 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
Mersen USA Gs Corp. - St Marys: Polycyclic aromatic compounds-led volume
Among the 566 Electrical Equipment facilities in this database, Mersen USA Gs Corp. - St Marys reports the 110th-largest volume, placing it in the top 19.4% of its sector. Its reported volume is concentrated rather than spread: Polycyclic aromatic compounds alone is 86.8% of the total. Carcinogen-classified chemicals make up 95.4% of the reported pounds, not just of the chemical count. Scale peers outside Pennsylvania include Ilsco and Eaton Intelligent Power Ltd.
Concentrated means ≥60% of Mersen USA Gs Corp. - St Marys's pounds in one chemical - here Polycyclic aromatic compounds at 86.8%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Mersen USA Gs Corp. - St Marys's total reported releases fell from 7.1 thousand lb in 2022 to 3.8 thousand lb in 2023, based on EPA TRI filings.
- Mersen USA Gs Corp. - St Marys's off-site transfers fell from 6.7 thousand lb in 2022 to 3.4 thousand lb in 2023, based on EPA TRI filings.
- Mersen USA Gs Corp. - St Marys's air releases fell from 442 lb in 2022 to 421 lb in 2023, based on EPA TRI filings.
Mersen USA Gs Corp. - St Marys Form-R facts
Compare this facility
See how Mersen USA Gs Corp. - St Marys stacks up against nearby facilities and the typical reporter.
16.4× more than the comparison
6.0× 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 Mersen USA Gs Corp. - St Marys releases toxic chemicals into the environment. Total: 44.6K lbs.
Emissions Trend Summary
From 2019 to 2024, total releases decreased by 85% (15.9K lbs to 2.4K lbs).
Mersen USA Gs Corp. - St Marys: annual Form-R pounds
LIGHT site · OFFSITE pathway · TRI years 2019–2024
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
- 2024 0
What this shows Mersen USA Gs Corp. - St Marys year-over-year reported totals (decreased by 85% 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: Polycyclic aromatic compounds.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 15.9K lbs | 6 |
| 2020 | 9.4K lbs | 4 |
| 2021 | 6.0K lbs | 5 |
| 2022 | 7.1K lbs | 5 |
| 2023 | 3.8K lbs | 5 |
| 2024 | 2.4K lbs | 5 |
Chemical Releases
Aggregated across all reporting years (2019–2024). 3 of 6 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Polycyclic aromatic compounds | 38.7K lbs | Carcinogen |
| Naphthalene | 3.8K lbs | Carcinogen |
| Phenanthrene | 1.6K lbs | - |
| Benzo[g,h,i]perylene | 325 lbs | - |
| Copper | 96 lbs | - |
| Lead | 43 lbs | Carcinogen |
Mersen USA Gs Corp. - St Marys · OFFSITE-pathway site
Nearest TRI Facilities to Mersen USA Gs Corp. - St Marys
Closest other reporters in Pennsylvania - including Sgl Carbon LLC, Speer Carbon Co LLC, Graftech USA LLC, ordered by distance.
Showing 8 of 1,009 other reporting facilities in Pennsylvania.
Similar Electrical Equipment Facilities
Other Electrical Equipment facilities with similar total release volumes (±80%), outside Pennsylvania - e.g. Ilsco, Eaton Intelligent Power Ltd, Virginia Transformer Corp.
Compare beyond Pennsylvania
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Mersen USA Gs Corp. - St Marys on cumulative reported pounds (42.2K lbs) and distinct chemical count (6). Release-pound peers include Lindau Chemicals Inc., Jvis Manufacturing LLC, Isp Chemicals LLC. Chemical-count peers include Eaton Intelligent Power Ltd, Leoni Wire Inc, Turf Care Supply-Hatfield Plant. 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 Polycyclic aromatic compounds, Naphthalene, Phenanthrene, Benzo[g,h,i]perylene; nearby reporters include Sgl Carbon LLC. Mersen USA Gs Corp. - St Marys stamps LIGHT volume · OFFSITE pathway · CARC-HEAVY 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 Mersen USA Gs Corp. - St Marys TRI extract (LIGHT · OFFSITE · CARC-HEAVY · lead Polycyclic aromatic compounds) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Mersen USA Gs Corp. - St Marys totals are self-reported EPCRA §313 estimates for Saint Marys, PA, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 335991 · Electrical Equipment. 2.7% of Elk TRI pounds in this extract. Nearest ABS peer: Lindau Chemicals Inc. (Δ 7 lbs). Pounds ≠ exposure.
Mersen USA Gs Corp. - St Marys stamps LIGHT volume · OFFSITE pathway · CARC-HEAVY · lead Polycyclic aromatic 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