EPA TRI Facility · Plastics and Rubber
Master Composites Inc
Henning, MN
- Total releases
- 22.4K lbs
- Chemicals reported
- 1
- Carcinogens
- 1
- Primary pathway
- Air Releases
AIR Form-R mix
Master Composites Inc: how the 22.4K lbs splits
22.4K lbs across all reported pathways
- Air Releases 20.6K lbs 92.1%
- Off-site Transfers 1.8K lbs 7.9%
Master Composites Inc's 22.4K lbs Form-R total is AIR - air releases is 92.1% of the bar. Next segment: off-site transfers at 7.9%. Leading chemical by pounds: Styrene.
LIGHT volume AIR pathway CARC-HEAVY
Master Composites Inc is an EPA Toxics Release Inventory reporter in Henning, MN, in the plastics and rubber sector. It reported 3.5K lbs of releases across 1 chemical in 2023, and 22.4K lbs in total across its 2019-2023 reporting years. That ranks 7,994 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Minnesota's 459 reporting TRI sites, pounds #1 is not chemical-count #1. Master Composites Inc is pounds #175 and chemical-count #354 at 22.4K lbs. Xcel Energy Sherburne County Generating Plant leads reported pounds (21.5M lbs) at 24 chemicals (chemical-count #4). 3M Chemical Operations' Cottage Grove Facility leads chemical count at 72 chemicals (3.0M lbs, pounds #8). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Homecrest Outdoor Living - Wadena; Bongards' Creameries Perham; Barrel O'Fun Snack Foods Co; Otter Tail Power Co Hoot Lake Plant. Similar-scale Plastics and Rubber peers outside Minnesota: Milkrite Interpuls Inc; Plaskolite Llc.; Armstrong Flooring Inc.; Cooper-Standard Automotive Inc.. Largest disclosed chemicals by pounds: Styrene.
Master Composites Inc stamps LIGHT volume with a dominant AIR pathway (92.1% air releases) across 1 chemical · 1 carcinogen-classified. Cumulative Form-R extract: 22.4K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Milkrite Interpuls Inc and Plaskolite Llc..
Master Composites Inc vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
22K lbs Top 31% higher than 69% 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
Master Composites Inc: Styrene-led volume
Among the 1,504 Plastics and Rubber facilities in this database, Master Composites Inc reports the 672nd-largest volume (22.4K lbs). Its reported volume is concentrated rather than spread: Styrene alone is 100% of the total. Carcinogen-classified chemicals make up 100% of the reported pounds, not just of the chemical count. Scale peers outside Minnesota include Milkrite Interpuls Inc and Plaskolite Llc..
Concentrated means ≥60% of Master Composites Inc's pounds in one chemical - here Styrene at 100%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Master Composites Inc's total reported releases fell from 8.3 thousand lb in 2022 to 3.5 thousand lb in 2023, based on EPA TRI filings.
- Master Composites Inc's air releases fell from 8.0 thousand lb in 2022 to 3.0 thousand lb in 2023, based on EPA TRI filings.
- Master Composites Inc's off-site transfers rose from 324 lb in 2022 to 494 lb in 2023, based on EPA TRI filings.
Master Composites Inc Form-R facts
Compare this facility
See how Master Composites Inc stacks up against nearby facilities and the typical reporter.
About the same as the comparison
About the same as 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 Master Composites Inc releases toxic chemicals into the environment. Total: 22.4K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 12% (4.0K lbs to 3.5K lbs).
Master Composites Inc: annual Form-R pounds
LIGHT site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Master Composites Inc year-over-year reported totals (decreased by 12% 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: Styrene.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 4.0K lbs | 1 |
| 2020 | 4.8K lbs | 1 |
| 2021 | 1.8K lbs | 1 |
| 2022 | 8.3K lbs | 1 |
| 2023 | 3.5K lbs | 1 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 1 of 1 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Styrene | 22.4K lbs | Carcinogen |
Master Composites Inc · AIR-pathway site
Nearest TRI Facilities to Master Composites Inc
Closest other reporters in Minnesota - including Homecrest Outdoor Living - Wadena, Bongards' Creameries Perham, Barrel O'Fun Snack Foods Co, ordered by distance.
Showing 8 of 458 other reporting facilities in Minnesota.
Similar Plastics and Rubber Facilities
Other Plastics and Rubber facilities with similar total release volumes (±80%), outside Minnesota - e.g. Milkrite Interpuls Inc, Plaskolite Llc., Armstrong Flooring Inc..
Compare beyond Minnesota
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Master Composites Inc on cumulative reported pounds (22.4K lbs) and distinct chemical count (1). Release-pound peers include Pittsfield Generating Co LP, Woodworth Inc Homer, Milkrite Interpuls Inc. Chemical-count peers include Ecoelectrica LP, Planta Penuelas, Tallaboa Puerto Rico 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.
- Pittsfield Generating Co LP Pittsfield, MA · Electric Utilities 22.4K lbs reported
- Woodworth Inc Homer Homer, MI · Fabricated Metals 22.4K lbs reported
- Milkrite Interpuls Inc Johnson Creek, WI · Plastics and Rubber 22.4K lbs reported
- Phillips & Johnston Rock River Fabrications Grand Rapids, MI · Primary Metals 22.4K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
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 Styrene; nearby reporters include Homecrest Outdoor Living - Wadena. Master Composites Inc stamps LIGHT volume · AIR pathway · CARC-HEAVY 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 Master Composites Inc TRI extract (LIGHT · AIR · CARC-HEAVY · lead Styrene) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Master Composites Inc totals are self-reported EPCRA §313 estimates for Henning, MN, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 326199 · Plastics and Rubber. 3.7% of Otter Tail TRI pounds in this extract. Nearest ABS peer: Pittsfield Generating Co LP (Δ 2 lbs). Pounds ≠ exposure.
Master Composites Inc stamps LIGHT volume · AIR pathway · CARC-HEAVY · lead Styrene. 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