EPA TRI Facility · Electric Utilities
Rm Heskett Station
Mandan, ND · Parent: Mdu Resources Group Inc
- Total releases
- 1.1M lbs
- Chemicals reported
- 9
- Carcinogens
- 1
- Primary pathway
- Land Disposal
LAND Form-R mix
Rm Heskett Station: how the 1.1M lbs splits
1.1M lbs across all reported pathways
- Land Disposal 924.8K lbs 87.3%
- Air Releases 134.9K lbs 12.7%
- Water Discharges 156 lbs <0.1%
Rm Heskett Station's 1.1M lbs Form-R total is LAND - land disposal is 87.3% of the bar. Next segment: air releases at 12.7%. Leading chemical by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)).
HEAVY volume LAND pathway TRACE-CARC
Rm Heskett Station is an EPA Toxics Release Inventory reporter in Mandan, ND, in the electric utilities sector. It reported 44.5K lbs of releases across 9 chemicals in 2022, and 1.1M lbs in total across its 2019-2022 reporting years. That ranks 1,250 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In North Dakota's 94 reporting TRI sites, Basin Electric Antelope Valley Station leads both reported pounds (167.8M lbs) and chemical count (55 chemicals). The two rankings do not invert in this pool. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Marathon Mandan Refinery; Bobcat-Doosan; Knife River North Central Bismarck Rock Island; Forterra Concrete Products - Menoken. Similar-scale Electric Utilities peers outside North Dakota: Ecoelectrica LP; Kincaid Power Station; Duke Energy Progress LLC - Smith Energy Complex; E. C. Gaston Electric Generating Plant. Other Mdu Resources Group Inc sites in this extract: Lewis & Clark 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)); Zinc compounds; Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Manganese compounds.
Rm Heskett Station stamps HEAVY volume with a dominant LAND pathway (87.3% land disposal) across 9 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 1.1M lbs (2019–2022). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Ecoelectrica LP and Kincaid Power Station.
Rm Heskett Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.1M lbs Top 5% higher than 95% 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
Rm Heskett Station inside Morton's TRI pounds
Among the 513 Electric Utilities facilities in this database, Rm Heskett Station reports the 180th-largest volume (1.1M lbs). This one site accounts for 33.4% of every pound reported in Morton. Scale peers outside North Dakota include Ecoelectrica LP and Kincaid Power Station.
County-dominant here means ≥25% of Morton's reported pounds (3.2M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Rm Heskett Station Form-R facts
Compare this facility
See how Rm Heskett Station stacks up against nearby facilities and the typical reporter.
44% less than the comparison
78% 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 Rm Heskett Station releases toxic chemicals into the environment. Total: 1.1M lbs.
Emissions Trend Summary
From 2019 to 2022, total releases decreased by 86% (309.4K lbs to 44.5K lbs).
Rm Heskett Station: annual Form-R pounds
HEAVY site · LAND pathway · TRI years 2019–2022
- 2019 0
- 2020 0
- 2021 0
- 2022 0
What this shows Rm Heskett Station year-over-year reported totals (decreased by 86% from 2019 to 2022). 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 | 309.4K lbs | 9 |
| 2020 | 335.5K lbs | 9 |
| 2021 | 370.5K lbs | 9 |
| 2022 | 44.5K lbs | 9 |
Chemical Releases
Aggregated across all reporting years (2019–2022). 1 of 9 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 525.3K lbs | - |
| Zinc compounds | 300.4K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 113.2K lbs | - |
| Manganese compounds | 94.9K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 17.6K lbs | - |
| Lead compounds | 4.8K lbs | - |
| Hydrogen fluoride | 3.6K lbs | - |
| Mercury compounds | 112 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Rm Heskett Station · LAND-pathway site
Nearest TRI Facilities to Rm Heskett Station
Closest other reporters in North Dakota - including Marathon Mandan Refinery, Bobcat-Doosan, Knife River North Central Bismarck Rock Island, ordered by distance.
Showing 8 of 93 other reporting facilities in North Dakota.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside North Dakota - e.g. Ecoelectrica LP, Kincaid Power Station, Duke Energy Progress LLC - Smith Energy Complex.
Compare beyond North Dakota
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Rm Heskett Station on cumulative reported pounds (1.1M lbs) and distinct chemical count (9). Release-pound peers include Danone US LLC, Metal Container Corp - Arnold Can Plant, Domtar Paper Co LLC Kingsport Mill. Chemical-count peers include Viatris Pharmaceuticals LLC, Prepa - San Juan Steam Plant, Solutia Inc. 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).
- Viatris Pharmaceuticals LLC Barceloneta, PR · Chemicals 9 chemicals
- Prepa - San Juan Steam Plant Puerto Nuevo, PR · Electric Utilities 9 chemicals
- Solutia Inc Springfield, MA · Plastics and Rubber 9 chemicals
- O'Connell Oil Co Merrill Road Facility Pittsfield, MA · Petroleum Bulk Terminals 9 chemicals
Other Mdu Resources Group Inc Facilities
Same-parent TRI sites ranked by reported releases - including Lewis & Clark 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)), Zinc compounds, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Manganese compounds; nearby reporters include Marathon Mandan Refinery. Rm Heskett Station stamps HEAVY volume · LAND pathway · TRACE-CARC 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 Rm Heskett Station TRI extract (HEAVY · LAND · TRACE-CARC · 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.
Rm Heskett Station totals are self-reported EPCRA §313 estimates for Mandan, ND, latest year 2022. Form-R rows span 2019–2022 (4 years). NAICS 221112 · Electric Utilities. 33.4% of Morton TRI pounds in this extract. Nearest ABS peer: Danone US LLC (Δ 540 lbs). Pounds ≠ exposure.
Rm Heskett Station stamps HEAVY volume · LAND pathway · TRACE-CARC · 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