EPA TRI Facility · Nonmetallic Mineral Product
Hemlock Semiconductor Operations LLC
Hemlock, MI · Parent: Corning Inc
- Total releases
- 102.8K lbs
- Chemicals reported
- 5
- Latest report
- 2023
- Primary pathway
- Off-site Transfers
MIXED Form-R mix
Hemlock Semiconductor Operations LLC: how the 102.8K lbs splits
102.8K lbs across all reported pathways
- Off-site Transfers 64.1K lbs 62.4%
- Air Releases 38.7K lbs 37.6%
Hemlock Semiconductor Operations LLC's 102.8K lbs Form-R total is MIXED - off-site transfers is 62.4% of the bar. Next segment: air releases at 37.6%. Leading chemical by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
MID volume MIXED pathway CLEAN
Hemlock Semiconductor Operations LLC is an EPA Toxics Release Inventory reporter in Hemlock, MI, in the nonmetallic mineral product sector. It reported 17.7K lbs of releases across 4 chemicals in 2023, and 102.8K lbs in total across its 2019-2023 reporting years. That ranks 4,526 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Michigan's 791 reporting TRI sites, pounds #1 is not chemical-count #1. Hemlock Semiconductor Operations LLC is pounds #153 and chemical-count #203 at 102.8K lbs. Cleveland-Cliffs Steel Corp Dearborn Works leads reported pounds (53.0M lbs) at 17 chemicals (chemical-count #27). Eq Detroit Inc leads chemical count at 71 chemicals (14.0M lbs, pounds #5). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Ddp Specialty Electronic Materials US 9 Llc. (hims); Porex Technologies Corp; Dow Silicones Corp Auburn Site; Midland Cogeneration Venture. Similar-scale Nonmetallic Mineral Product peers outside Michigan: Owens Corning Insulating Systems LLC; Armstrong Cement & Supply Corp; Harbisonwalker International Inc; Acme Brick Co-Elgin Plant. Other Corning Inc sites in this extract: Corning Inc; Corning Inc; Corning Inc; Corning Optical Communications Llc-Hmtc. Largest disclosed chemicals by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution); Chlorodifluoromethane (HCFC-22); Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Hydrogen fluoride.
Hemlock Semiconductor Operations LLC is a MID · MIXED-pathway Form-R site in Hemlock, MI: 102.8K lbs across 5 chemicals. No single media clears 70% of the bar (lead segment off-site transfers at 62.4%). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Owens Corning Insulating Systems LLC and Armstrong Cement & Supply Corp.
Hemlock Semiconductor Operations LLC vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
103K lbs Top 17% higher than 83% 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
Hemlock Semiconductor Operations LLC: Nitrate compounds (water dissociable; reportable only when in aqueous solution)-led volume
Among the 3,265 Nonmetallic Mineral Product facilities in this database, Hemlock Semiconductor Operations LLC reports the 177th-largest volume, placing it in the top 5.4% of its sector. Its reported volume is concentrated rather than spread: Nitrate compounds (water dissociable; reportable only when in aqueous solution) alone is 62.4% of the total. Scale peers outside Michigan include Owens Corning Insulating Systems LLC and Armstrong Cement & Supply Corp.
Concentrated means ≥60% of Hemlock Semiconductor Operations LLC's pounds in one chemical - here Nitrate compounds (water dissociable; reportable only when in aqueous solution) at 62.4%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Hemlock Semiconductor Operations LLC's total reported releases fell from 42.0 thousand lb in 2022 to 17.7 thousand lb in 2023, based on EPA TRI filings.
- Hemlock Semiconductor Operations LLC's air releases fell from 28.6 thousand lb in 2022 to 1.3 thousand lb in 2023, based on EPA TRI filings.
- Hemlock Semiconductor Operations LLC's off-site transfers rose from 13.4 thousand lb in 2022 to 16.5 thousand lb in 2023, based on EPA TRI filings.
- Hemlock Semiconductor Operations LLC's chemicals reported fell from 5 in 2022 to 4 in 2023, based on EPA TRI filings.
Hemlock Semiconductor Operations LLC Form-R facts
Compare this facility
See how Hemlock Semiconductor Operations LLC stacks up against nearby facilities and the typical reporter.
45.7× more than the comparison
2.5× 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 Hemlock Semiconductor Operations LLC releases toxic chemicals into the environment. Total: 102.8K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 35% (13.1K lbs to 17.7K lbs).
Hemlock Semiconductor Operations LLC: annual Form-R pounds
MID site · MIXED pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Hemlock Semiconductor Operations LLC year-over-year reported totals (increased by 35% 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 | 13.1K lbs | 5 |
| 2020 | 15.6K lbs | 4 |
| 2021 | 14.4K lbs | 4 |
| 2022 | 42.0K lbs | 5 |
| 2023 | 17.7K lbs | 4 |
Chemical Releases
Aggregated across all reporting years (2019–2023). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 64.1K lbs | - |
| Chlorodifluoromethane (HCFC-22) | 27.7K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 9.9K lbs | - |
| Hydrogen fluoride | 831 lbs | - |
| Nitric acid | 211 lbs | - |
Hemlock Semiconductor Operations LLC in Saginaw
Nearest TRI Facilities to Hemlock Semiconductor Operations LLC
Closest other reporters in Michigan - including Ddp Specialty Electronic Materials US 9 Llc. (hims), Porex Technologies Corp, Dow Silicones Corp Auburn Site, ordered by distance.
Showing 8 of 790 other reporting facilities in Michigan.
Similar Nonmetallic Mineral Product Facilities
Other Nonmetallic Mineral Product facilities with similar total release volumes (±80%), outside Michigan - e.g. Owens Corning Insulating Systems LLC, Armstrong Cement & Supply Corp, Harbisonwalker International Inc.
Compare beyond Michigan
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Hemlock Semiconductor Operations LLC on cumulative reported pounds (102.8K lbs) and distinct chemical count (5). Release-pound peers include Air Liquide Large Industries US LP - Smr Unit, Thunderbird Metals, O-At-Ka Milk Products LLC. Chemical-count peers include Abbvie Ltd, Lilly del Caribe Inc Carolin A, Baxter Healthcare of 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.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Corning Inc Facilities
Same-parent TRI sites ranked by reported releases - including Corning Inc, Corning Inc, Corning Inc.
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), Chlorodifluoromethane (HCFC-22), Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrogen fluoride; nearby reporters include Ddp Specialty Electronic Materials US 9 Llc. (hims). Hemlock Semiconductor Operations LLC stamps MID volume · MIXED 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 Hemlock Semiconductor Operations LLC TRI extract (MID · MIXED · CLEAN · 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.
Hemlock Semiconductor Operations LLC totals are self-reported EPCRA §313 estimates for Hemlock, MI, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 327992 · Nonmetallic Mineral Product. 19.7% of Saginaw TRI pounds in this extract. Nearest ABS peer: Air Liquide Large Industries US LP - Smr Unit (Δ 57 lbs). Pounds ≠ exposure.
Hemlock Semiconductor Operations LLC stamps MID · MIXED pathway (off-site transfers leads at 62.4%). Pipeline-rendered EPA Form-R only - no editor-typed pounds. 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