EPA TRI Facility · Petroleum
Mdu Resources Knife River Sundial Asphalt
Troutdale, OR · Parent: Mdu Resources Group Inc
- Total releases
- 403 lbs
- Chemicals reported
- 6
- Carcinogens
- 1
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Mdu Resources Knife River Sundial Asphalt: how the 403 lbs splits
403 lbs across all reported pathways
- Off-site Transfers 399 lbs 99.1%
- Air Releases 3 lbs 0.6%
- Land Disposal 1 lbs 0.3%
Mdu Resources Knife River Sundial Asphalt's 403 lbs Form-R total is OFFSITE - off-site transfers is 99.1% of the bar. Next segment: air releases at 0.6%. Leading chemical by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
TRACE volume OFFSITE pathway TRACE-CARC
Mdu Resources Knife River Sundial Asphalt is an EPA Toxics Release Inventory reporter in Troutdale, OR, in the petroleum sector. It reported 3 lbs of releases across 3 chemicals in 2023, and 403 lbs in total across its 2019-2023 reporting years. That ranks 15,060 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Oregon's 285 reporting TRI sites, pounds #1 is not chemical-count #1. Mdu Resources Knife River Sundial Asphalt is pounds #189 and chemical-count #55 at 403 lbs. Dyno Nobel- St.helens Plant leads reported pounds (32.0M lbs) at 6 chemicals (chemical-count #39). Chemical Waste Management of the Northwest Inc. leads chemical count at 56 chemicals (15.6M lbs, pounds #2). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Glacier Northwest Inc Troutdale Ready Mix Plant; Willamette Graystone - Wood Village Or Paver Plan; Onsemi; Cascade Corp. Similar-scale Petroleum peers outside Oregon: Weblain&sons Inc Natchez Asphalt Plant; Building Materials Manufacturing LLC; Fort Myer Construction Plant 1; Vance Brothers LLC. Other Mdu Resources Group Inc sites in this extract: Rm Heskett Station; Lewis & Clark Station; Knife River Cheyenne; Mdu Resources Roseburg Asphalt. Largest disclosed chemicals by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution); Lead And Lead Compounds; Polycyclic aromatic compounds; Lead compounds.
Mdu Resources Knife River Sundial Asphalt stamps TRACE volume with a dominant OFFSITE pathway (99.1% off-site transfers) across 6 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 403 lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Weblain&sons Inc Natchez Asphalt Plant and Building Materials Manufacturing LLC.
Mdu Resources Knife River Sundial Asphalt vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
403 lbs 42nd percentile higher than 42% 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
Mdu Resources Knife River Sundial Asphalt in the Petroleum sector extract
Among the 902 Petroleum facilities in this database, Mdu Resources Knife River Sundial Asphalt reports the 372nd-largest volume (403 lbs). Scale peers outside Oregon include Weblain&sons Inc Natchez Asphalt Plant and Building Materials Manufacturing LLC.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Mdu Resources Knife River Sundial Asphalt's total reported releases fell from 17 lb in 2022 to 3 lb in 2023, based on EPA TRI filings.
- Mdu Resources Knife River Sundial Asphalt's off-site transfers fell from 16 lb in 2022 to 1 lb in 2023, based on EPA TRI filings.
- Mdu Resources Knife River Sundial Asphalt's chemicals reported fell from 4 in 2022 to 3 in 2023, based on EPA TRI filings.
Mdu Resources Knife River Sundial Asphalt Form-R facts
Compare this facility
See how Mdu Resources Knife River Sundial Asphalt stacks up against nearby facilities and the typical reporter.
79% less than the comparison
3.0× more 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 Mdu Resources Knife River Sundial Asphalt releases toxic chemicals into the environment. Total: 403 lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 99% (312 lbs to 3 lbs).
Mdu Resources Knife River Sundial Asphalt: annual Form-R pounds
TRACE site · OFFSITE pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Mdu Resources Knife River Sundial Asphalt year-over-year reported totals (decreased by 99% from 2019 to 2023). 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: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 312 lbs | 4 |
| 2020 | 44 lbs | 5 |
| 2021 | 27 lbs | 5 |
| 2022 | 17 lbs | 4 |
| 2023 | 3 lbs | 3 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 1 of 6 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 391 lbs | - |
| Lead And Lead Compounds | 8 lbs | - |
| Polycyclic aromatic compounds | 2 lbs | Carcinogen |
| Lead compounds | 1 lbs | - |
| Mercury | 0 lbs | - |
| Benzo[g,h,i]perylene | 0 lbs | - |
Mdu Resources Knife River Sundial Asphalt · OFFSITE-pathway site
Nearest TRI Facilities to Mdu Resources Knife River Sundial Asphalt
Closest other reporters in Oregon - including Glacier Northwest Inc Troutdale Ready Mix Plant, Willamette Graystone - Wood Village Or Paver Plan, Onsemi, ordered by distance.
Showing 8 of 284 other reporting facilities in Oregon.
Similar Petroleum Facilities
Other Petroleum facilities with similar total release volumes (±80%), outside Oregon - e.g. Weblain&sons Inc Natchez Asphalt Plant, Building Materials Manufacturing LLC, Fort Myer Construction Plant 1.
Other Mdu Resources Group Inc Facilities
Same-parent TRI sites ranked by reported releases - including Rm Heskett Station, Lewis & Clark Station, Knife River Cheyenne.
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 Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead And Lead Compounds, Polycyclic aromatic compounds, Lead compounds; nearby reporters include Glacier Northwest Inc Troutdale Ready Mix Plant. Mdu Resources Knife River Sundial Asphalt stamps TRACE volume · OFFSITE 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 Mdu Resources Knife River Sundial Asphalt TRI extract (TRACE · OFFSITE · TRACE-CARC · lead Nitrate compounds (water dissociable; reportable only when in aqueous solution)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Mdu Resources Knife River Sundial Asphalt totals are self-reported EPCRA §313 estimates for Troutdale, OR, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 324121 · Petroleum. 0.0% of Multnomah TRI pounds in this extract. Nearest ABS peer: Sfi of Arkansas (Δ 0 lbs). Pounds ≠ exposure.
Mdu Resources Knife River Sundial Asphalt stamps TRACE volume · OFFSITE pathway · TRACE-CARC · lead Nitrate compounds (water dissociable; reportable only when in aqueous solution). 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