EPA TRI Facility · Fabricated Metals
Surface Treatment & Inspection (st&i) Inc.
Paramount, CA
- Total releases
- 95.9K lbs
- Chemicals reported
- 2
- Latest report
- 2022
- Primary pathway
- Off-site Transfers
Reported-total composition
How the reported total is distributed
95.9K lbs across all reported pathways
- Off-site Transfers 87.8K lbs 91.5%
- Air Releases 8.1K lbs 8.5%
The segments reconcile to the cumulative total shown above. Off-site transfers are shown separately from releases to air, water, and land.
LIGHT volume OFFSITE pathway CLEAN
Surface Treatment & Inspection (st&i) Inc. is an EPA Toxics Release Inventory reporter in Paramount, CA, in the fabricated metals sector. It reported 2.3K lbs of releases across 1 chemical in 2022, and 95.9K lbs in total across its 2019-2022 reporting years. That ranks 4,679 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In California's 1,149 reporting TRI sites, pounds #1 is not chemical-count #1. Surface Treatment & Inspection (st&i) Inc. is pounds #150 and chemical-count #544 at 95.9K lbs. Clean Harbors Buttonwillow LLC leads reported pounds (50.4M lbs) at 45 chemicals (chemical-count #2). Chevron Products Co Richmond Refinery leads chemical count at 46 chemicals (3.0M lbs, pounds #13). Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Aerocraft Heat Treating Co. Inc; Carlton Forge Works; Press Forge Co; Weber Metals Inc.. Similar-scale Fabricated Metals peers outside California: De Nora Tech Inc Chardon Manufacturing Facility; Valmont Coatings Intermountain Galvanizing; Nagalv-Ohio Inc; Pioneer Metal Finishing LLC. Largest disclosed chemicals by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution); Nitric acid.
Surface Treatment & Inspection (st&i) Inc. has reported 95.9K lbs of toxic releases across 2 chemicals to the EPA Toxic Release Inventory, based on annual facility disclosures from 2019 through 2023. The facility operates in the Fabricated Metals sector. The primary release pathway is off-site transfers, accounting for 92% 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.
Surface Treatment & Inspection (st&i) Inc. vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
96K lbs Top 18% higher than 82% 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 3,421 Fabricated Metals facilities in this database, Surface Treatment & Inspection (st&i) Inc. reports the 473rd-largest volume, placing it in the top 13.8% of its sector. Its reported volume is concentrated rather than spread: Nitrate compounds (water dissociable; reportable only when in aqueous solution) alone is 91.5% 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.
Quick Facts
Compare this facility
See how Surface Treatment & Inspection (st&i) Inc. stacks up against nearby facilities and the typical reporter.
9.3× more than the comparison
33% 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 Surface Treatment & Inspection (st&i) Inc. releases toxic chemicals into the environment. Total: 95.9K lbs.
Emissions Trend Summary
From 2019 to 2022, total releases decreased by 95% (47.8K lbs to 2.3K lbs).
Reported total releases by year
Surface Treatment & Inspection (st&i) Inc. - annual TRI totals
- 2019 0
- 2020 0
- 2021 0
- 2022 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 | 47.8K lbs | 2 |
| 2020 | 40.9K lbs | 2 |
| 2021 | 5.0K lbs | 2 |
| 2022 | 2.3K lbs | 1 |
Chemical Releases
Aggregated across all reporting years (2019–2022). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 87.8K lbs | - |
| Nitric acid | 8.1K lbs | - |
Location
Nearest TRI Facilities to Surface Treatment & Inspection (st&i) Inc.
Closest other reporters in California - including Aerocraft Heat Treating Co. Inc, Carlton Forge Works, Press Forge Co, ordered by distance.
Showing 8 of 1,148 other reporting facilities in California.
Similar Fabricated Metals Facilities
Other Fabricated Metals facilities with similar total release volumes (±80%), outside California - e.g. De Nora Tech Inc Chardon Manufacturing Facility, Valmont Coatings Intermountain Galvanizing, Nagalv-Ohio Inc.
Compare beyond California
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Surface Treatment & Inspection (st&i) Inc. on cumulative reported pounds (95.9K lbs) and distinct chemical count (2). Release-pound peers include American Italian Pasta Co, Nexeo Solutions LLC, Cemex Construction Materials South LLC - Balcones Plant. Chemical-count peers include Idi Caribe Inc, Suiza Dairy Corp, Edwards Lifesciences Technology Sarl. 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.
- American Italian Pasta Co Excelsior Springs, MO · Food 95.9K lbs reported
- Nexeo Solutions LLC Kansas City, KS · Chemical Wholesalers 95.9K lbs reported
- Cemex Construction Materials South LLC - Balcones Plant New Braunfels, TX · Nonmetallic Mineral Product 96.0K lbs reported
- Shell Norco Chemical Plant West Site Norco, LA · Chemicals 96.0K 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 Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid; nearby reporters include Aerocraft Heat Treating Co. Inc. Surface Treatment & Inspection (st&i) Inc. stamps LIGHT volume · OFFSITE 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 Surface Treatment & Inspection (st&i) Inc. 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