EPA TRI Facility · Chemicals
Sigma Life Sciences
The Woodlands, TX
- Total releases
- 9.5K lbs
- Chemicals reported
- 3
- Carcinogens
- 2
- Primary pathway
- Air Releases
Reported-total composition
How the reported total is distributed
9.5K lbs across all reported pathways
- Air Releases 9.5K lbs 100.0%
The segments reconcile to the cumulative total shown above. Off-site transfers are shown separately from releases to air, water, and land.
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 AIR pathway CARC-LEAN
Sigma Life Sciences is an EPA Toxics Release Inventory reporter in The Woodlands, TX, in the chemicals sector. It reported 2.0K lbs of releases across 3 chemicals in 2023, and 9.5K lbs in total across its 2019-2023 reporting years. That ranks 9,914 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Texas's 2,016 reporting TRI sites, pounds #1 is not chemical-count #1. Sigma Life Sciences is pounds #962 and chemical-count #1005 at 9.5K lbs. Ascend Performance Materials-Chocolate Bayou Plant leads reported pounds (94.0M lbs) at 36 chemicals (chemical-count #35). Veolia Es Technical Solutions LLC Port Arthur Facility leads chemical count at 246 chemicals (1.5M lbs, pounds #112). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Baker Hughes - Hughes Christensen; Tuf-Crete Plant; Halliburton Drill Bits & Services; Welldynamics Inc. Similar-scale Chemicals peers outside Texas: Bluestone Specialty Chemicals LLC; Polyurethane Specialties Co.in C.; Innospec Active Chemicals; Resinlab Kitpackers. Largest disclosed chemicals by pounds: Acetonitrile; Dichloromethane; N,N-Dimethylformamide.
Sigma Life Sciences has reported 9.5K lbs of toxic releases across 3 chemicals to the EPA Toxic Release Inventory, based on annual facility disclosures from 2019 through 2023. Of the chemicals reported, 2 are classified as carcinogens, representing 67% of the facility's chemical profile. The facility operates in the Chemicals sector. The primary release pathway is air releases, accounting for 100% of total releases. All release data shown below is self-reported to the EPA under the Emergency Planning and Community Right-to-Know Act (EPCRA) Section 313.
Sigma Life Sciences vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
9.5K lbs Top 38% higher than 62% 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
Where this facility sits in the TRI record
Among the 3,917 Chemicals facilities in this database, Sigma Life Sciences reports the 2,077th-largest volume (9.5K lbs). Its reported volume is concentrated rather than spread: Acetonitrile alone is 75.9% of the total.
Placement is computed from reported TRI pounds in this database. Thresholds are fixed across every facility page: concentrated ≥60% of volume in one chemical, county-dominant ≥25% of the county total, carcinogen-heavy ≥50% of pounds. Share-based statements are shown only for sites reporting at least 1,000 lbs, because a share of a very small total is not a meaningful signal. Reported pounds are self-reported estimates and do not measure toxicity or health risk.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Sigma Life Sciences's total reported releases rose from 1.8 thousand lb in 2022 to 2.0 thousand lb in 2023, based on EPA TRI filings.
- Sigma Life Sciences's air releases rose from 1.8 thousand lb in 2022 to 2.0 thousand lb in 2023, based on EPA TRI filings.
Quick Facts
Compare this facility
See how Sigma Life Sciences stacks up against nearby facilities and the typical reporter.
7.9× more than the comparison
40% 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 Sigma Life Sciences releases toxic chemicals into the environment. Total: 9.5K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 5% (1.9K lbs to 2.0K lbs).
Reported total releases by year
Sigma Life Sciences - annual TRI totals
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Year-over-year reported totals. TRI figures are self-reported estimates and can swing with production levels, waste-rock handling and reporting changes, not only with emissions controls.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 1.9K lbs | 3 |
| 2020 | 1.8K lbs | 3 |
| 2021 | 2.0K lbs | 3 |
| 2022 | 1.8K lbs | 3 |
| 2023 | 2.0K 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 |
|---|---|---|
| Acetonitrile | 7.2K lbs | - |
| Dichloromethane | 1.3K lbs | Carcinogen |
| N,N-Dimethylformamide | 1.0K lbs | Carcinogen |
Location
Nearest TRI Facilities to Sigma Life Sciences
Closest other reporters in Texas - including Baker Hughes - Hughes Christensen, Tuf-Crete Plant, Halliburton Drill Bits & Services, ordered by distance.
Showing 8 of 2,015 other reporting facilities in Texas.
Similar Chemicals Facilities
Other Chemicals facilities with similar total release volumes (±80%), outside Texas - e.g. Bluestone Specialty Chemicals LLC, Polyurethane Specialties Co.in C., Innospec Active Chemicals.
Compare beyond Texas
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Sigma Life Sciences on cumulative reported pounds (9.5K lbs) and distinct chemical count (3). Release-pound peers include Tampa Bay Fisheries Inc, Betts Co, Amac Enterprises 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 Acetonitrile, Dichloromethane, N,N-Dimethylformamide; nearby reporters include Baker Hughes - Hughes Christensen. Sigma Life Sciences stamps LIGHT volume · AIR pathway · CARC-LEAN 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 Sigma Life Sciences record combines EPA TRI filings, facility identity, and compliance context without turning reported releases into a health-risk rating.
TRI release totals are self-reported estimates, not measured stack emissions. The methodology explains how records are joined, computed, and refreshed.
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.
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