EPA TRI Facility · Electric Utilities
Lewis & Clark Station
Sidney, MT · Parent: Mdu Resources Group Inc
- Total releases
- 263.5K lbs
- Chemicals reported
- 4
- Latest report
- 2021
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Lewis & Clark Station: how the 263.5K lbs splits
263.5K lbs across all reported pathways
- Off-site Transfers 261.8K lbs 99.3%
- Water Discharges 934 lbs 0.4%
- Air Releases 789 lbs 0.3%
Lewis & Clark Station's 263.5K lbs Form-R total is OFFSITE - off-site transfers is 99.3% of the bar. Next segment: water discharges at 0.4%. Leading chemical by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)).
MID volume OFFSITE pathway CLEAN
Lewis & Clark Station is an EPA Toxics Release Inventory reporter in Sidney, MT, in the electric utilities sector. It reported 34.5K lbs of releases across 4 chemicals in 2021, and 263.5K lbs in total across its 2019-2021 reporting years. That ranks 2,787 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Montana's 67 reporting TRI sites, pounds #1 is not chemical-count #1. Lewis & Clark Station is pounds #18 and chemical-count #33 at 263.5K lbs. Montana Resources LLC leads reported pounds (215.2M lbs) at 12 chemicals (chemical-count #11). Phillips 66 Co Billings Refinery leads chemical count at 39 chemicals (465.0K lbs, pounds #16). Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Sidney Sugars Inc; Bakken Gas Plant; Thatcher Co of North Dakota Inc; Nalco Company-Baker. Similar-scale Electric Utilities peers outside Montana: National Grid E.f. Barrett Power Station; Florida Power & Light Co Turkey Point Power Plant; Duke Energy Carolinas LLC - Allen Steam Station; Mankato Energy Center. Other Mdu Resources Group Inc sites in this extract: Rm Heskett Station; Knife River Cheyenne; Mdu Resources Roseburg Asphalt; Mdu Resources Redmond Concrete. Largest disclosed chemicals by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Manganese compounds; Lead compounds; Mercury compounds.
Lewis & Clark Station stamps MID volume with a dominant OFFSITE pathway (99.3% off-site transfers) across 4 chemicals. Cumulative Form-R extract: 263.5K lbs (2019–2021). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include National Grid E.f. Barrett Power Station and Florida Power & Light Co Turkey Point Power Plant.
Lewis & Clark Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
264K lbs Top 11% higher than 89% 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
Lewis & Clark Station inside Richland's TRI pounds
Among the 513 Electric Utilities facilities in this database, Lewis & Clark Station reports the 275th-largest volume (263.5K lbs). This one site accounts for 25.9% of every pound reported in Richland. Its reported volume is concentrated rather than spread: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) alone is 81.8% of the total. Scale peers outside Montana include National Grid E.f. Barrett Power Station and Florida Power & Light Co Turkey Point Power Plant.
County-dominant here means ≥25% of Richland's reported pounds (1.0M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Lewis & Clark Station Form-R facts
Compare this facility
See how Lewis & Clark Station stacks up against nearby facilities and the typical reporter.
64% less than the comparison
20% less 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 Lewis & Clark Station releases toxic chemicals into the environment. Total: 263.5K lbs.
Emissions Trend Summary
From 2019 to 2021, total releases decreased by 70% (114.7K lbs to 34.5K lbs).
Lewis & Clark Station: annual Form-R pounds
MID site · OFFSITE pathway · TRI years 2019–2021
- 2019 0
- 2020 0
- 2021 0
What this shows Lewis & Clark Station year-over-year reported totals (decreased by 70% from 2019 to 2021). 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: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 114.7K lbs | 4 |
| 2020 | 114.3K lbs | 4 |
| 2021 | 34.5K lbs | 4 |
Chemical Releases
Aggregated across all reporting years (2019–2021). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 215.6K lbs | - |
| Manganese compounds | 45.7K lbs | - |
| Lead compounds | 2.2K lbs | - |
| Mercury compounds | 64 lbs | - |
Lewis & Clark Station · OFFSITE-pathway site
Nearest TRI Facilities to Lewis & Clark Station
Closest other reporters in Montana - including Sidney Sugars Inc, Bakken Gas Plant, Thatcher Co of North Dakota Inc, ordered by distance.
Showing 8 of 66 other reporting facilities in Montana.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Montana - e.g. National Grid E.f. Barrett Power Station, Florida Power & Light Co Turkey Point Power Plant, Duke Energy Carolinas LLC - Allen Steam Station.
Compare beyond Montana
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Lewis & Clark Station on cumulative reported pounds (263.5K lbs) and distinct chemical count (4). Release-pound peers include Whirlpool Corp - Clyde Operations, Nd Paper Inc - Biron Div, Boise Cascade Wood Products Florien Operations. Chemical-count peers include Hamilton Sundstrand de Puerto Rico Inc., Abb Installation Products Caribe LLC, Solenis LLC. 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.
- Whirlpool Corp - Clyde Operations Clyde, OH · Electrical Equipment 263.7K lbs reported
- Nd Paper Inc - Biron Div Wisconsin Rapids, WI · Paper 264.0K lbs reported
- Boise Cascade Wood Products Florien Operations Florien, LA · Wood Products 263.0K lbs reported
- Westfield Electroplating Co Westfield, MA · Fabricated Metals 264.1K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
- Hamilton Sundstrand de Puerto Rico Inc. Santa Isabel, PR · Transportation Equipment 4 chemicals
- Abb Installation Products Caribe LLC Vega Baja, PR · Electrical Equipment 4 chemicals
- Solenis LLC Chicopee, MA · Chemicals 4 chemicals
- Adhesive Applications Inc. - O'Neill St Easthampton Easthampton, MA · Miscellaneous Manufacturing 4 chemicals
Other Mdu Resources Group Inc Facilities
Same-parent TRI sites ranked by reported releases - including Rm Heskett Station, Knife River Cheyenne, Mdu Resources Roseburg Asphalt.
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 Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Manganese compounds, Lead compounds, Mercury compounds; nearby reporters include Sidney Sugars Inc. Lewis & Clark Station stamps MID volume · OFFSITE 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 Lewis & Clark Station TRI extract (MID · OFFSITE · CLEAN · lead Barium compounds (except for barium sulfate (CAS No. 7727-43-7))) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Lewis & Clark Station totals are self-reported EPCRA §313 estimates for Sidney, MT, latest year 2021. Form-R rows span 2019–2021 (3 years). NAICS 221112 · Electric Utilities. 25.9% of Richland TRI pounds in this extract. Nearest ABS peer: Whirlpool Corp - Clyde Operations (Δ 170 lbs). Pounds ≠ exposure.
Lewis & Clark Station stamps MID volume · OFFSITE pathway · CLEAN · lead Barium compounds (except for barium sulfate (CAS No. 7727-43-7)). 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