Saint Nicholas Cogeneration Project – Emissions Trend
Shenandoah, PA · 2019–2024
This page assembles 6 consecutive years of EPA Toxics Release Inventory Form R filings for Saint Nicholas Cogeneration Project, spanning 2019–2024. Each annual total aggregates on-site air emissions, surface-water discharges, land disposal, and off-site transfers reported by the facility under EPCRA Section 313, which requires disclosure whenever a listed chemical is manufactured, processed, or otherwise used above threshold quantities.
Reported releases opened at 913.4K in 2019 and closed at 886.6K in 2024 – a flat trend of 2.9% over the window. The chart below stacks the four TRI release media (air, water, land, off-site) and overlays the yearly total. The top contributor by cumulative mass is Barium And Barium Compounds at 1.8M, followed by Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) at 903.4K.
Because TRI figures are estimated, not metered, year-over-year deltas can reflect methodology revisions, ownership changes, or shifts in what a facility classifies as reportable, not only physical emission changes. Treat the trajectory as a disclosure record, and cross-reference with the EPA Enforcement and Compliance History Online (ECHO) system for the fuller regulatory picture on this electric utilities facility.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Saint Nicholas Cogeneration Project's total reported releases rose from 869.3 thousand lb in 2022 to 917.7 thousand lb in 2023, based on EPA TRI filings.
- Saint Nicholas Cogeneration Project's land releases rose from 801.4 thousand lb in 2022 to 848.9 thousand lb in 2023, based on EPA TRI filings.
- Saint Nicholas Cogeneration Project's air releases rose from 67.9 thousand lb in 2022 to 68.8 thousand lb in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 913.4K lbs | 18 | - |
| 2020 | 999.0K lbs | 18 | +9.4% |
| 2021 | 979.5K lbs | 18 | -2.0% |
| 2022 | 869.3K lbs | 18 | -11.2% |
| 2023 | 917.7K lbs | 18 | +5.6% |
| 2024 | 886.6K lbs | 18 | -3.4% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | Total |
|---|---|---|---|---|---|---|---|
| Barium And Barium Compounds | - | - | 448.7K | 393.0K | 482.2K | 491.2K | 1.8M |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 422.7K | 480.7K | - | - | - | - | 903.4K |
| Manganese And Manganese Compounds | - | - | 243.0K | 193.7K | 150.5K | 92.5K | 679.7K |
| Manganese compounds | 213.0K | 225.2K | - | - | - | - | 438.1K |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 46.2K | 50.6K | 50.1K | 50.2K | 50.9K | 45.4K | 293.3K |
| Zinc compounds | 55.2K | 54.2K | 37.5K | 27.9K | 29.6K | 37.3K | 241.8K |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | - | - | 49.7K | 58.2K | 59.8K | 54.2K | 221.9K |
| Copper And Copper Compounds | - | - | 46.3K | 50.2K | 44.1K | 43.0K | 183.5K |
| Lead And Lead Compounds | - | - | 33.4K | 26.7K | 29.2K | 51.4K | 140.7K |
| Copper compounds | 48.2K | 53.1K | - | - | - | - | 101.3K |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 45.6K | 54.2K | - | - | - | - | 99.9K |
| Nickel And Nickel Compounds | - | - | 27.8K | 18.4K | 19.4K | 17.6K | 83.1K |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 12.3K | 13.4K | 13.3K | 13.3K | 13.5K | 12.0K | 77.8K |
| Arsenic And Arsenic Compounds | - | - | 15.7K | 14.9K | 14.7K | 19.9K | 65.2K |
| Cobalt And Cobalt Compounds | - | - | 9.4K | 18.4K | 19.4K | 17.6K | 64.8K |
About This Data
Trend data is sourced from the EPA Toxic Release Inventory (TRI). Facilities report annually. Release quantities are self-reported estimates. Year-over-year changes may reflect changes in production, pollution control measures, reporting methodology, or chemical thresholds.
A decrease in reported releases does not necessarily indicate improved environmental performance, as it may reflect production cutbacks, facility closures, or changes in reporting requirements. Similarly, increases may reflect expanded production rather than degraded environmental practices.
Frequently Asked Questions
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Read our methodology - how this data is sourced, computed, and verified.