Keystone-Conemaugh Projects LLC
2 facilities · 1 state · 15.0M lbs total releases
According to the EPA Toxics Release Inventory, Keystone-Conemaugh Projects LLC is the reported parent of 2 Form R facilities across 1 state, disclosing 15.0M lbs of toxic releases. 8 of 53 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is Pennsylvania (15.0M lbs). Those TRI figures remain self-reported disclosure pounds for Keystone-Conemaugh Projects LLC, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for Keystone-Conemaugh Projects LLC: EPA TRI 2023 reporting year
Same facilities, both years
-52.4%
2 facilities that filed in 2022 and 2023
Whole inventory
-52.4%
2.1 million lb → 1.0 million lb, every facility that filed
- Keystone-Conemaugh Projects LLC's total reported releases fell from 2.1 million lb in 2022 to 1.0 million lb in 2023, based on EPA TRI filings.
- Keystone-Conemaugh Projects LLC's water releases rose from 20.5 thousand lb in 2022 to 80.8 thousand lb in 2023, based on EPA TRI filings.
- Keystone-Conemaugh Projects LLC's land releases fell from 985.1 thousand lb in 2022 to 335.3 thousand lb in 2023, based on EPA TRI filings.
- Keystone-Conemaugh Projects LLC's air releases fell from 1.1 million lb in 2022 to 587.0 thousand lb in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read Keystone-Conemaugh Projects LLC from filing to facility
Largest Form R sites under this parent: Conemaugh Generating Station; Keystone Power Plant. Neighbor parents on the disclosure ladder: US Steel Corp; Cleveland-Cliffs Inc; Metals Holding Recovery LLC. Largest disclosed chemicals by pounds: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Manganese And Manganese Compounds; Barium And Barium Compounds; Manganese compounds; Zinc compounds. Heaviest-reporting states in this extract: Pennsylvania. Industry labels on the parent rollup: Electric Utilities. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files Toxics Release Inventory (TRI) · August 2026
Largest Form R sites under this parent: Conemaugh Generating Station; Keystone Power Plant. Neighbor parents on the disclosure ladder: US Steel Corp; Cleveland-Cliffs Inc; Metals Holding Recovery LLC. Largest disclosed chemicals by pounds: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Manganese And Manganese Compounds; Barium And Barium Compounds; Manganese compounds; Zinc compounds. Heaviest-reporting states in this extract: Pennsylvania. Industry labels on the parent rollup: Electric Utilities.
Keystone-Conemaugh Projects LLC ranks #115 of 4,988 slug-merged TRI parents by disclosed release pounds, mid-to-upper among parents, not a top-25 volume name. Keystone-Conemaugh Projects LLC's TRI Form R footprint is concentrated in a single state (Pennsylvania), so statewide context matters more than a multi-state portfolio read. Keystone-Conemaugh Projects LLC's disclosed pounds are spread across 2 facilities, no single site dominates the parent total in this extract.
Parent aggregation for Keystone-Conemaugh Projects LLC follows facility-reported names. Compare the named neighbors (US Steel Corp; Cleveland-Cliffs Inc; Metals Holding Recovery LLC) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where Keystone-Conemaugh Projects LLC sits among TRI parents
Keystone-Conemaugh Projects LLC sits on a disclosure ladder beside US Steel Corp and Cleveland-Cliffs Inc and Metals Holding Recovery LLC. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- US Steel Corp · rank #113 · 40.6M lbs
Lower disclosed volume
- Cleveland-Cliffs Inc · rank #116 · 13.7M lbs
- Metals Holding Recovery LLC · rank #117 · 9.6M lbs
Largest chemicals disclosed by Keystone-Conemaugh Projects LLC
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Manganese And Manganese Compounds; Barium And Barium Compounds; Manganese compounds; Zinc compounds lead the Form R pound rollup for this parent, including filings such as Conemaugh Generating Station. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 9.3M lbs |
| Manganese And Manganese Compounds | 2.5M lbs |
| Barium And Barium Compounds | 1.1M lbs |
| Manganese compounds | 1.0M lbs |
| Zinc compounds | 529.4K lbs |
Facilities (2)
| Facility | Releases |
|---|---|
| Conemaugh Generating Station New Florence, PA | 9.0M lbs |
| Keystone Power Plant Shelocta, PA | 6.0M lbs |
Frequently Asked Questions
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Compare beyond the release ladder
Nationwide peers by disclosed pounds & facility count
Cross-portfolio TRI parents nearest Keystone-Conemaugh Projects LLC on total disclosed release pounds (15.0M lbs) and reporting facility count (2). Release-volume peers include Real Alloy Holding LLC, Ashland Inc, Lamb Weston Inc. Neighborhoods are forced disjoint so each axis surfaces a different set of parents.
Similar disclosed release pounds
Nearest parents (≥3 facilities, ≥10k lbs) by absolute TRI disclosed pounds, not rank-adjacent ladder neighbors.
About This Data
EPA TRI parent totals cover all media. This extract's heaviest states for the parent are Pennsylvania; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with Keystone-Conemaugh Projects LLC's TRI parent record
From Keystone-Conemaugh Projects LLC, open Conemaugh Generating Station or compare against US Steel Corp rather than reading rank alone.
- Open the largest Form R site for Keystone-Conemaugh Projects LLC (Conemaugh Generating Station in PA). Largest facility
- Compare against US Steel Corp, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where Keystone-Conemaugh Projects LLC sits among all slug-merged TRI parents. All parent companies
Rank and peers (US Steel Corp, Cleveland-Cliffs Inc) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
Keystone-Conemaugh Projects LLC's record groups disclosed TRI parent-company filings so readers can compare reporting context without treating the total as a measure of risk.
Company release figures are computed directly from EPA Toxic Release Inventory data; source names and the record-linking method are documented in the methodology.
Primary sources
- EPA Toxics Release Inventory Basic Data Files - annual facility-level chemical-release disclosures
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.