EPA TRI Facility · Petroleum
Mission Valley Rock
Sunol, CA · Parent: Martin Marietta Materials Inc
- Total releases
- 1.2K lbs
- Chemicals reported
- 8
- Carcinogens
- 1
- Primary pathway
- Air Releases
AIR Form-R mix
Mission Valley Rock: how the 1.2K lbs splits
1.2K lbs across all reported pathways
- Air Releases 1.2K lbs 100.0%
- Water Discharges 0 lbs <0.1%
- Land Disposal 0 lbs <0.1%
Mission Valley Rock's 1.2K lbs Form-R total is AIR - air releases is 100.0% of the bar. Next segment: water discharges at <0.1%. Leading chemical by pounds: Aluminum (fume or dust).
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 TRACE-CARC
Mission Valley Rock is an EPA Toxics Release Inventory reporter in Sunol, CA, in the petroleum sector. It reported 6 lbs of releases across 5 chemicals in 2023, and 1.2K lbs in total across its 2019-2023 reporting years. That ranks 13,633 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. Mission Valley Rock is pounds #653 and chemical-count #122 at 1.2K 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: Applied Biosystems LLC; Western Digital Technologies - Fremont; Google LLC; Bay Area Circuits Inc. Similar-scale Petroleum peers outside California: Owens Corning; Danosa Caribbean Inc; Marathon Petroleum Co - Kuttawa Ky Terminal; Knife River Cheyenne. Other Martin Marietta Materials Inc sites in this extract: Martin Marietta North Texas Cement LLC; Martin Marietta Magnesia Specialties Woodville; Martin Marietta Arizona LLC - River Ranch Plant; Martin Marietta Arizona LLC - Dobson Plant. Largest disclosed chemicals by pounds: Aluminum (fume or dust); Zinc compounds; Lead And Lead Compounds; Polycyclic aromatic compounds.
Compare Mission Valley Rock with
Nearest reporters in California
- Applied Biosystems LLC Pleasanton · 2.1K lbs
- Western Digital Technologies - Fremont Fremont · 505.1K lbs
- Google LLC Fremont · 9.6K lbs
- Bay Area Circuits Inc Fremont · 2 lbs
Similar-scale Petroleum sites elsewhere: Owens Corning (FL) · Danosa Caribbean Inc (PR) · Marathon Petroleum Co - Kuttawa Ky Terminal (KY)
Mission Valley Rock stamps LIGHT volume with a dominant AIR pathway (100.0% air releases) across 8 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 1.2K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Owens Corning and Danosa Caribbean Inc.
Mission Valley Rock vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.2K lbs 48th percentile higher than 48% 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
Mission Valley Rock: Aluminum (fume or dust)-led volume
Among the 902 Petroleum facilities in this database, Mission Valley Rock reports the 318th-largest volume (1.2K lbs). Its reported volume is concentrated rather than spread: Aluminum (fume or dust) alone is 98.2% of the total. Scale peers outside California include Owens Corning and Danosa Caribbean Inc.
Concentrated means ≥60% of Mission Valley Rock's pounds in one chemical - here Aluminum (fume or dust) at 98.2%. Not a toxicity score.
Mission Valley Rock Form-R facts
Compare this facility
See how Mission Valley Rock stacks up against nearby facilities and the typical reporter.
43% less than the comparison
4.0× 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 Mission Valley Rock releases toxic chemicals into the environment. Total: 1.2K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 99% (490 lbs to 6 lbs).
Mission Valley Rock: annual Form-R pounds
LIGHT site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Mission Valley Rock year-over-year reported totals (decreased by 99% from 2019 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: Aluminum (fume or dust).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 490 lbs | 5 |
| 2020 | 663 lbs | 5 |
| 2021 | 3 lbs | 4 |
| 2022 | 7 lbs | 5 |
| 2023 | 6 lbs | 5 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 1 of 8 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Aluminum (fume or dust) | 1.1K lbs | - |
| Zinc compounds | 8 lbs | - |
| Lead And Lead Compounds | 6 lbs | - |
| Polycyclic aromatic compounds | 3 lbs | Carcinogen |
| Lead compounds | 1 lbs | - |
| Mercury And Mercury Compounds | 1 lbs | - |
| Mercury compounds | 1 lbs | - |
| Benzo[g,h,i]perylene | 0 lbs | - |
Mission Valley Rock · AIR-pathway site
Nearest TRI Facilities to Mission Valley Rock
Closest other reporters in California - including Applied Biosystems LLC, Western Digital Technologies - Fremont, Google LLC, ordered by distance.
Showing 8 of 1,148 other reporting facilities in California.
Similar Petroleum Facilities
Other Petroleum facilities with similar total release volumes (±80%), outside California - e.g. Owens Corning, Danosa Caribbean Inc, Marathon Petroleum Co - Kuttawa Ky Terminal.
Compare beyond California
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Mission Valley Rock on cumulative reported pounds (1.2K lbs) and distinct chemical count (8). Release-pound peers include Redwood Materials Inc, Meramec Group, Titanium Metals Corp DBA Timet. 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.
- Redwood Materials Inc Carson City, NV · Electrical Equipment 1.2K lbs reported
- Meramec Group Sullivan, MO · Plastics and Rubber 1.2K lbs reported
- Titanium Metals Corp DBA Timet Morgantown, PA · Primary Metals 1.2K lbs reported
- Hitachi Energy USA Inc. South Boston, VA · Electrical Equipment 1.2K lbs reported
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 North Texas Cement LLC, Martin Marietta Magnesia Specialties Woodville, 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 Aluminum (fume or dust), Zinc compounds, Lead And Lead Compounds, Polycyclic aromatic compounds; nearby reporters include Applied Biosystems LLC. Mission Valley Rock stamps LIGHT volume · AIR 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 Mission Valley Rock TRI extract (LIGHT · AIR · TRACE-CARC · lead Aluminum (fume or dust)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Mission Valley Rock totals are self-reported EPCRA §313 estimates for Sunol, CA, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 324121 · Petroleum. 0.0% of Alameda TRI pounds in this extract. Nearest ABS peer: Redwood Materials Inc (Δ 1 lbs). Pounds ≠ exposure.
Mission Valley Rock stamps LIGHT volume · AIR pathway · TRACE-CARC · lead Aluminum (fume or dust). 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