Coal Creek Station – Emissions Trend

Underwood, ND · 2019–2023 · Parent: Remc Assets LP

This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for Coal Creek Station, spanning 2019–2023. 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 2.7M in 2019 and closed at 2.4M in 2023 – a decrease of 9.9% 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 compounds (except for barium sulfate (CAS No. 7727-43-7)) at 5.9M, followed by Barium And Barium Compounds at 3.3M.

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.

Overall Trend
↓ Decreasing (-9.9%)
2019 Total
2.7M lbs
2023 Total
2.4M lbs

Total Releases by Category

Air
Water
Land
Offsite Transfer
0741.2K1.5M2.2M3.0M3.7M 20192020202120222023 Pounds Released

Year-over-Year Comparison

Year Total Chemicals YoY Change
2019 2.7M lbs 18 -
2020 2.6M lbs 18 -3.7%
2021 3.7M lbs 19 +42.2%
2022 3.1M lbs 19 -17.4%
2023 2.4M lbs 19 -20.4%

Top Chemicals by Year

Chemical 20192020202120222023 Total
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) 1.7M 1.9M 2.4M - - 5.9M
Barium And Barium Compounds - - - 1.8M 1.5M 3.3M
Manganese compounds 611.7K 315.5K 455.0K - - 1.4M
Manganese And Manganese Compounds - - - 555.6K 316.3K 872.0K
Vanadium compounds 58.5K 54.1K 144.1K 101.8K 91.6K 450.1K
Zinc compounds 22.8K 33.8K 115.3K 83.4K 72.9K 328.2K
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 62.0K 61.0K 67.0K 63.0K 55.0K 308.0K
Hydrogen fluoride 52.0K 51.0K 55.0K 52.0K 45.0K 255.0K
Antimony compounds 70.2K 76.4K 104.4K - - 251.0K
Copper compounds 21.6K 37.8K 134.2K - - 193.6K
Copper And Copper Compounds - - - 99.9K 86.7K 186.6K
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 30.0K 30.0K 33.0K 31.0K 28.0K 152.0K
Antimony And Antimony Compounds - - - 79.6K 69.2K 148.8K
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) 26.1K - - 55.7K 48.5K 130.3K
Cobalt compounds 35.2K 37.8K 52.0K - - 125.1K

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

Is Coal Creek Station getting cleaner or dirtier?
Based on EPA TRI data from 2019–2023, Coal Creek Station's total toxic releases have decreased by approximately 10%.
What time period does this trend data cover?
This page shows 5 years of EPA Toxic Release Inventory data from 2019–2023. Release quantities are self-reported estimates filed annually by the facility.