EPA TRI Facility · Nonmetallic Mineral Product
Martin Marietta North Texas Cement LLC
Midlothian, TX · Parent: Martin Marietta Materials Inc
- Total releases
- 1.0M lbs
- Chemicals reported
- 8
- Carcinogens
- 1
- Primary pathway
- Air Releases
Reported-total composition
How the reported total is distributed
1.0M lbs across all reported pathways
- Air Releases 605.1K lbs 58.4%
- Land Disposal 429.4K lbs 41.4%
- Water Discharges 1.8K lbs 0.2%
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.
HEAVY volume MIXED pathway TRACE-CARC
Martin Marietta North Texas Cement LLC is an EPA Toxics Release Inventory reporter in Midlothian, TX, in the nonmetallic mineral product sector. It reported 231.6K lbs of releases across 7 chemicals in 2023, and 1.0M lbs in total across its 2019-2023 reporting years. That ranks 1,270 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. Martin Marietta North Texas Cement LLC is pounds #138 and chemical-count #369 at 1.0M 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 fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Chaparral Steel Midlothian LP; Mm-Midlothian Railport Ready Mix; Buckley Oil Co - Midlothian Site; Qualico Steel Co Inc Texas Div. Similar-scale Nonmetallic Mineral Product peers outside Texas: St Marys Cement U.S. LLC; Knauf Insulation Inc.; Saint Gobain Industrial Ceramic Inc; Roxul USA Inc. Other Martin Marietta Materials Inc sites in this extract: Martin Marietta Magnesia Specialties Woodville; Mission Valley Rock; Martin Marietta Arizona LLC - River Ranch Plant; Martin Marietta Arizona LLC - Dobson Plant. Largest disclosed chemicals by pounds: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Manganese And Manganese Compounds; Zinc compounds; Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region).
Martin Marietta North Texas Cement LLC has reported 1.0M lbs of toxic releases across 8 chemicals to the EPA Toxic Release Inventory, based on annual facility disclosures from 2019 through 2023. Of the chemicals reported, 1 is classified as carcinogen, representing 13% of the facility's chemical profile. The facility operates in the Nonmetallic Mineral Product sector. The primary release pathway is air releases, accounting for 58% 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.
Martin Marietta North Texas Cement LLC vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.0M lbs Top 5% higher than 95% 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, Martin Marietta North Texas Cement LLC reports the 23rd-largest volume, placing it in the top 0.7% of its sector.
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
- Martin Marietta North Texas Cement LLC's total reported releases fell from 307.3 thousand lb in 2022 to 231.6 thousand lb in 2023, based on EPA TRI filings.
- Martin Marietta North Texas Cement LLC's land releases fell from 180.6 thousand lb in 2022 to 105.2 thousand lb in 2023, based on EPA TRI filings.
Quick Facts
Compare this facility
See how Martin Marietta North Texas Cement LLC stacks up against nearby facilities and the typical reporter.
About the same as the comparison
38% 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 Martin Marietta North Texas Cement LLC releases toxic chemicals into the environment. Total: 1.0M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 60% (144.4K lbs to 231.6K lbs).
Reported total releases by year
Martin Marietta North Texas Cement LLC - 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 | 144.4K lbs | 8 |
| 2020 | 151.9K lbs | 7 |
| 2021 | 201.1K lbs | 7 |
| 2022 | 307.3K lbs | 7 |
| 2023 | 231.6K lbs | 7 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 1 of 8 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 597.6K lbs | - |
| Manganese And Manganese Compounds | 388.6K lbs | - |
| Zinc compounds | 24.3K lbs | - |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 15.8K lbs | - |
| Lead And Lead Compounds | 9.5K lbs | - |
| Nickel And Nickel Compounds | 265 lbs | Carcinogen |
| Mercury And Mercury Compounds | 164 lbs | - |
| Ethylene glycol | 0 lbs | - |
Location
Nearest TRI Facilities to Martin Marietta North Texas Cement LLC
Closest other reporters in Texas - including Chaparral Steel Midlothian LP, Mm-Midlothian Railport Ready Mix, Buckley Oil Co - Midlothian Site, 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. St Marys Cement U.S. LLC, Knauf Insulation Inc., Saint Gobain Industrial Ceramic Inc.
Compare beyond Texas
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Martin Marietta North Texas Cement LLC on cumulative reported pounds (1.0M lbs) and distinct chemical count (8). Release-pound peers include Systech Environmental Corp, Western Sugar Cooperative, 250 - Kershaw Oilseeds. Chemical-count peers include Prepa-South Coast Power Plant, Argos Puerto Rico Corp., US Tsubaki Automotive 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 Martin Marietta Materials Inc Facilities
Same-parent TRI sites ranked by reported releases - including Martin Marietta Magnesia Specialties Woodville, Mission Valley Rock, Martin Marietta Arizona LLC - River Ranch Plant.
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 Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Manganese And Manganese Compounds, Zinc compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region); nearby reporters include Chaparral Steel Midlothian LP. Martin Marietta North Texas Cement LLC stamps HEAVY volume · MIXED pathway · TRACE-CARC 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 Martin Marietta North Texas Cement LLC 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