EPA TRI Facility · Primary Metals
Mississippi Silicon LLC
Burnsville, MS · Parent: Rima Holding USA Inc.
- Total releases
- 10.9K lbs
- Chemicals reported
- 3
- Carcinogens
- 2
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Mississippi Silicon LLC: how the 10.9K lbs splits
10.9K lbs across all reported pathways
- Off-site Transfers 7.9K lbs 72.1%
- Air Releases 3.0K lbs 27.9%
- Land Disposal 0 lbs <0.1%
Mississippi Silicon LLC's 10.9K lbs Form-R total is OFFSITE - off-site transfers is 72.1% of the bar. Next segment: air releases at 27.9%. Leading chemical by pounds: Polycyclic aromatic compounds.
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
LIGHT volume OFFSITE pathway CARC-HEAVY
Mississippi Silicon LLC is an EPA Toxics Release Inventory reporter in Burnsville, MS, in the primary metals sector. It reported 678 lbs of releases across 3 chemicals in 2023, and 10.9K lbs in total across its 2019-2023 reporting years. That ranks 9,635 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Mississippi's 328 reporting TRI sites, pounds #1 is not chemical-count #1. Mississippi Silicon LLC is pounds #161 and chemical-count #130 at 10.9K lbs. Tronox LLC leads reported pounds (64.0M lbs) at 17 chemicals (chemical-count #12). Chevron Products Co Pascagoula Refinery leads chemical count at 46 chemicals (7.4M lbs, pounds #9). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Lippert Components Plant 120; Patrick Industries Inc. DBA Baymont Composites; Vanleigh Rv Inc.; Apac-Mississippi Inc. Glen Asphalt Plant. Similar-scale Primary Metals peers outside Mississippi: Welded Tubes Inc.; Lone Star Tubular Operations; Hydro Extrusion USA LLC; Quality Castings Co. Largest disclosed chemicals by pounds: Polycyclic aromatic compounds; Benzo[g,h,i]perylene; Dioxin and dioxin-like compounds.
Mississippi Silicon LLC stamps LIGHT volume with a dominant OFFSITE pathway (72.1% off-site transfers) across 3 chemicals · 2 carcinogen-classified. Cumulative Form-R extract: 10.9K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Welded Tubes Inc. and Lone Star Tubular Operations.
Mississippi Silicon LLC vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
11K lbs Top 37% higher than 63% 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
Mississippi Silicon LLC: Polycyclic aromatic compounds-led volume
Among the 1,603 Primary Metals facilities in this database, Mississippi Silicon LLC reports the 728th-largest volume (10.9K lbs). Its reported volume is concentrated rather than spread: Polycyclic aromatic compounds alone is 90.0% of the total. Carcinogen-classified chemicals make up 90.0% of the reported pounds, not just of the chemical count. Scale peers outside Mississippi include Welded Tubes Inc. and Lone Star Tubular Operations.
Concentrated means ≥60% of Mississippi Silicon LLC's pounds in one chemical - here Polycyclic aromatic compounds at 90.0%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Mississippi Silicon LLC's total reported releases fell from 3.7 thousand lb in 2022 to 678 lb in 2023, based on EPA TRI filings.
- Mississippi Silicon LLC's off-site transfers fell from 3.1 thousand lb in 2022 to 122 lb in 2023, based on EPA TRI filings.
- Mississippi Silicon LLC's air releases fell from 652 lb in 2022 to 556 lb in 2023, based on EPA TRI filings.
Mississippi Silicon LLC Form-R facts
Compare this facility
See how Mississippi Silicon LLC stacks up against nearby facilities and the typical reporter.
97.4× more than 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 Mississippi Silicon LLC releases toxic chemicals into the environment. Total: 10.9K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 20% (849 lbs to 678 lbs).
Mississippi Silicon LLC: annual Form-R pounds
LIGHT site · OFFSITE pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Mississippi Silicon LLC year-over-year reported totals (decreased by 20% 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: Polycyclic aromatic compounds.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 849 lbs | 1 |
| 2020 | 1.5K lbs | 3 |
| 2021 | 4.1K lbs | 3 |
| 2022 | 3.7K lbs | 3 |
| 2023 | 678 lbs | 3 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 2 of 3 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Polycyclic aromatic compounds | 9.8K lbs | Carcinogen |
| Benzo[g,h,i]perylene | 1.1K lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Mississippi Silicon LLC · OFFSITE-pathway site
Nearest TRI Facilities to Mississippi Silicon LLC
Closest other reporters in Mississippi - including Lippert Components Plant 120, Patrick Industries Inc. DBA Baymont Composites, Vanleigh Rv Inc., ordered by distance.
Showing 8 of 327 other reporting facilities in Mississippi.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside Mississippi - e.g. Welded Tubes Inc., Lone Star Tubular Operations, Hydro Extrusion USA LLC.
Compare beyond Mississippi
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Mississippi Silicon LLC on cumulative reported pounds (10.9K lbs) and distinct chemical count (3). Release-pound peers include Inx International Ink Co., Welded Tubes Inc., North American Lighting Inc. Chemical-count peers include Industrial C&s of Pr LLC Arecibo Plant, Island Litho Corp., Fenwal International 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).
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 Polycyclic aromatic compounds, Benzo[g,h,i]perylene, Dioxin and dioxin-like compounds; nearby reporters include Lippert Components Plant 120. Mississippi Silicon LLC stamps LIGHT volume · OFFSITE 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 Mississippi Silicon LLC TRI extract (LIGHT · OFFSITE · CARC-HEAVY · lead Polycyclic aromatic compounds) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Mississippi Silicon LLC totals are self-reported EPCRA §313 estimates for Burnsville, MS, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 331410 · Primary Metals. 0.5% of Tishomingo TRI pounds in this extract. Nearest ABS peer: Inx International Ink Co. (Δ 7 lbs). Pounds ≠ exposure.
Mississippi Silicon LLC stamps LIGHT volume · OFFSITE pathway · CARC-HEAVY · lead Polycyclic aromatic compounds. 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