EPA TRI Facility · Nonmetallic Mineral Product
Capitol Aggregates Inc.
San Antonio, TX · Parent: Zachry Construction & Materials Inc
- Total releases
- 40.6K lbs
- Chemicals reported
- 9
- Carcinogens
- 3
- Primary pathway
- Air Releases
Reported-total composition
How the reported total is distributed
40.6K lbs across all reported pathways
- Air Releases 40.6K lbs 100.0%
- Land Disposal 0 lbs <0.1%
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-HEAVY
Capitol Aggregates Inc. is an EPA Toxics Release Inventory reporter in San Antonio, TX, in the nonmetallic mineral product sector. It reported 2.2K lbs of releases across 8 chemicals in 2023, and 40.6K lbs in total across its 2019-2023 reporting years. That ranks 6,623 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. Capitol Aggregates Inc. is pounds #649 and chemical-count #330 at 40.6K 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). Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Carbonfree Chemicals Spe I Holdings LLC; Clarios Llc. San Antonio Dc; Package Design & Mfg; Allied Aviation Fueling Co of Texas Inc.. Similar-scale Nonmetallic Mineral Product peers outside Texas: Nsg Glass N.a. Inc; General Shale Brick Inc. - Plant 51; Abrasive Technology; Europtec USA LLC. Largest disclosed chemicals by pounds: Acetaldehyde; Ammonia; Mercury And Mercury Compounds; Lead And Lead Compounds.
Capitol Aggregates Inc. has reported 40.6K lbs of toxic releases across 9 chemicals to the EPA Toxic Release Inventory, based on annual facility disclosures from 2019 through 2023. Of the chemicals reported, 3 are classified as carcinogens, representing 33% of the facility's chemical profile. The facility operates in the Nonmetallic Mineral Product 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.
Capitol Aggregates Inc. vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
41K lbs Top 25% higher than 75% 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 3,265 Nonmetallic Mineral Product facilities in this database, Capitol Aggregates Inc. reports the 243rd-largest volume, placing it in the top 7.4% of its sector. Its reported volume is concentrated rather than spread: Acetaldehyde alone is 71.0% of the total. Carcinogen-classified chemicals make up 71.0% of the reported pounds, not just of the chemical count.
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 Capitol Aggregates Inc. stacks up against nearby facilities and the typical reporter.
50.5× more than the comparison
4.5× 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 Capitol Aggregates Inc. releases toxic chemicals into the environment. Total: 40.6K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 93% (31.1K lbs to 2.2K lbs).
Reported total releases by year
Capitol Aggregates Inc. - 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 | 31.1K lbs | 9 |
| 2020 | 2.3K lbs | 8 |
| 2021 | 2.8K lbs | 8 |
| 2022 | 2.2K lbs | 8 |
| 2023 | 2.2K lbs | 8 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 3 of 9 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Acetaldehyde | 28.8K lbs | Carcinogen |
| Ammonia | 11.6K lbs | - |
| Mercury And Mercury Compounds | 123 lbs | - |
| Lead And Lead Compounds | 68 lbs | - |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0 lbs | - |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 0 lbs | - |
| Cobalt compounds | 0 lbs | Carcinogen |
| Manganese compounds | 0 lbs | - |
| Nickel compounds | 0 lbs | Carcinogen |
Location
Nearest TRI Facilities to Capitol Aggregates Inc.
Closest other reporters in Texas - including Carbonfree Chemicals Spe I Holdings LLC, Clarios Llc. San Antonio Dc, Package Design & Mfg, ordered by distance.
Showing 8 of 2,015 other reporting facilities in Texas.
Similar Nonmetallic Mineral Product Facilities
Other Nonmetallic Mineral Product facilities with similar total release volumes (±80%), outside Texas - e.g. Nsg Glass N.a. Inc, General Shale Brick Inc. - Plant 51, Abrasive Technology.
Compare beyond Texas
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Capitol Aggregates Inc. on cumulative reported pounds (40.6K lbs) and distinct chemical count (9). Release-pound peers include Crane Chempharma & Energy Corp., Merck Sharp & Dohme LLC, E & J Gallo Winery. Chemical-count peers include Viatris Pharmaceuticals LLC, Prepa - San Juan Steam Plant, Solutia 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).
- Viatris Pharmaceuticals LLC Barceloneta, PR · Chemicals 9 chemicals
- Prepa - San Juan Steam Plant Puerto Nuevo, PR · Electric Utilities 9 chemicals
- Solutia Inc Springfield, MA · Plastics and Rubber 9 chemicals
- O'Connell Oil Co Merrill Road Facility Pittsfield, MA · Petroleum Bulk Terminals 9 chemicals
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 Acetaldehyde, Ammonia, Mercury And Mercury Compounds, Lead And Lead Compounds; nearby reporters include Carbonfree Chemicals Spe I Holdings LLC. Capitol Aggregates 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 Capitol Aggregates 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