EPA TRI Facility · Petroleum
Martin Marietta Arizona LLC - 51ST Avenue Plant
Phoenix, AZ · Parent: Martin Marietta Materials Inc
- Total releases
- 16 lbs
- Chemicals reported
- 3
- Carcinogens
- 1
- Primary pathway
- Air Releases
AIR Form-R mix
Martin Marietta Arizona LLC - 51ST Avenue Plant: how the 16 lbs splits
16 lbs across all reported pathways
- Air Releases 16 lbs 100.0%
Martin Marietta Arizona LLC - 51ST Avenue Plant's 16 lbs Form-R total is AIR - air releases is 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases. Leading chemical by pounds: Lead compounds.
TRACE volume AIR pathway CARC-LEAN
Martin Marietta Arizona LLC - 51ST Avenue Plant is an EPA Toxics Release Inventory reporter in Phoenix, AZ, in the petroleum sector. It reported 1 lbs of releases across 2 chemicals in 2023, and 16 lbs in total across its 2022-2023 reporting years. That ranks 18,135 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Arizona's 288 reporting TRI sites, pounds #1 is not chemical-count #1. Martin Marietta Arizona LLC - 51ST Avenue Plant is pounds #234 and chemical-count #125 at 16 lbs. Freeport-McMoran Miami Inc leads reported pounds (129.3M lbs) at 17 chemicals (chemical-count #10). Freeport-McMoran Morenci Inc leads chemical count at 33 chemicals (36.9M lbs, pounds #4). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Classic Stone; Vulcan Materials Co West 43RD; Calportland Co 43RD Ave Plant; Martin Marietta Arizona LLC - 67TH Ave Plant. Similar-scale Petroleum peers outside Arizona: Tilcon New Jersey Riverdale Quarry; Texarkana Asphalt Plant; Rk Hall - Materials & Asphalt Plant - Denison; Poe Asphalt Paving Inc.. Other Martin Marietta Materials Inc sites in this extract: Martin Marietta North Texas Cement LLC; Martin Marietta Magnesia Specialties Woodville; Mission Valley Rock; Martin Marietta Arizona LLC - River Ranch Plant. Largest disclosed chemicals by pounds: Lead compounds; Polycyclic aromatic compounds; Benzo[g,h,i]perylene.
Martin Marietta Arizona LLC - 51ST Avenue Plant stamps TRACE volume with a dominant AIR pathway (100.0% air releases) across 3 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 16 lbs (2022–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Tilcon New Jersey Riverdale Quarry and Texarkana Asphalt Plant.
Martin Marietta Arizona LLC - 51ST Avenue Plant vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
16 lbs 30th percentile higher than 30% 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
Martin Marietta Arizona LLC - 51ST Avenue Plant in the Petroleum sector extract
Among the 902 Petroleum facilities in this database, Martin Marietta Arizona LLC - 51ST Avenue Plant reports the 508th-largest volume (16 lbs). Scale peers outside Arizona include Tilcon New Jersey Riverdale Quarry and Texarkana Asphalt Plant.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Martin Marietta Arizona LLC - 51ST Avenue Plant's total reported releases fell from 15 lb in 2022 to 1 lb in 2023, based on EPA TRI filings.
- Martin Marietta Arizona LLC - 51ST Avenue Plant's air releases fell from 15 lb in 2022 to 1 lb in 2023, based on EPA TRI filings.
- Martin Marietta Arizona LLC - 51ST Avenue Plant's chemicals reported fell from 3 in 2022 to 2 in 2023, based on EPA TRI filings.
Martin Marietta Arizona LLC - 51ST Avenue Plant Form-R facts
Compare this facility
See how Martin Marietta Arizona LLC - 51ST Avenue Plant stacks up against nearby facilities and the typical reporter.
3169.5× more than the comparison
50% 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 Martin Marietta Arizona LLC - 51ST Avenue Plant releases toxic chemicals into the environment. Total: 16 lbs.
Emissions Trend Summary
From 2022 to 2023, total releases decreased by 95% (15 lbs to 1 lbs).
Martin Marietta Arizona LLC - 51ST Avenue Plant: annual Form-R pounds
TRACE site · AIR pathway · TRI years 2022–2023
- 2022 0
- 2023 0
What this shows Martin Marietta Arizona LLC - 51ST Avenue Plant year-over-year reported totals (decreased by 95% from 2022 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: Lead compounds.
| Year | Total | Chemicals |
|---|---|---|
| 2022 | 15 lbs | 3 |
| 2023 | 1 lbs | 2 |
Chemical Releases
Aggregated across all reporting years (2022–2023). 1 of 3 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Lead compounds | 15 lbs | - |
| Polycyclic aromatic compounds | 1 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 0 lbs | - |
Martin Marietta Arizona LLC - 51ST Avenue Plant · AIR-pathway site
Nearest TRI Facilities to Martin Marietta Arizona LLC - 51ST Avenue Plant
Closest other reporters in Arizona - including Classic Stone, Vulcan Materials Co West 43RD, Calportland Co 43RD Ave Plant, ordered by distance.
Showing 8 of 287 other reporting facilities in Arizona.
Similar Petroleum Facilities
Other Petroleum facilities with similar total release volumes (±80%), outside Arizona - e.g. Tilcon New Jersey Riverdale Quarry, Texarkana Asphalt Plant, Rk Hall - Materials & Asphalt Plant - Denison.
Other Martin Marietta Materials Inc Facilities
Same-parent TRI sites ranked by reported releases - including Martin Marietta North Texas Cement LLC, Martin Marietta Magnesia Specialties Woodville, Mission Valley Rock.
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 Lead compounds, Polycyclic aromatic compounds, Benzo[g,h,i]perylene; nearby reporters include Classic Stone. Martin Marietta Arizona LLC - 51ST Avenue Plant stamps TRACE 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 Martin Marietta Arizona LLC - 51ST Avenue Plant TRI extract (TRACE · AIR · CARC-LEAN · lead Lead compounds) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Martin Marietta Arizona LLC - 51ST Avenue Plant totals are self-reported EPCRA §313 estimates for Phoenix, AZ, latest year 2023. Form-R rows span 2022–2023 (2 years). NAICS 324121 · Petroleum. 0.0% of Maricopa TRI pounds in this extract. Nearest ABS peer: Ft Manufacturing Corp (Δ 0 lbs). Pounds ≠ exposure.
Martin Marietta Arizona LLC - 51ST Avenue Plant stamps TRACE volume · AIR pathway · CARC-LEAN · lead Lead compounds. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. 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