EPA TRI Facility · Nonmetallic Mineral Product
Westlake Royal Roofing - Lathrop
Lathrop, CA · Parent: Westlake Corp
- Total releases
- 3.9K lbs
- Chemicals reported
- 2
- Carcinogens
- 1
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Westlake Royal Roofing - Lathrop: how the 3.9K lbs splits
3.9K lbs across all reported pathways
- Off-site Transfers 3.9K lbs 100.0%
Westlake Royal Roofing - Lathrop's 3.9K lbs Form-R total is OFFSITE - off-site transfers is 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases. Leading chemical by pounds: Lead.
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 OFFSITE pathway CARC-HEAVY
Westlake Royal Roofing - Lathrop is an EPA Toxics Release Inventory reporter in Lathrop, CA, in the nonmetallic mineral product sector. It reported 409 lbs of releases across 1 chemical in 2023, and 3.9K lbs in total across its 2019-2023 reporting years. That ranks 11,640 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. Westlake Royal Roofing - Lathrop is pounds #532 and chemical-count #615 at 3.9K 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). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Westlake Royal Roofing - French Camp; California Natural Products; Calaveras Materials Inc - Lathrop Rmc; Valimet Inc. Similar-scale Nonmetallic Mineral Product peers outside California: Epredia; Pilkington Na Inc; Mississippi Lime Co LLC DBA Mlc; Cloud Ceramics. Other Westlake Corp sites in this extract: Westlake Longview Corp; Westlake US 2 LLC; Westlake Polymers LLC; Westlake Vinyls Inc. Largest disclosed chemicals by pounds: Lead; Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region).
Compare Westlake Royal Roofing - Lathrop with
Nearest reporters in California
- Westlake Royal Roofing - French Camp French Camp · 4.1K lbs
- California Natural Products Lathrop · 25.3K lbs
- Calaveras Materials Inc - Lathrop Rmc Lathrop · 0 lbs
- Valimet Inc Stockton · 270 lbs
Similar-scale Nonmetallic Mineral Product sites elsewhere: Epredia (NH) · Pilkington Na Inc (KY) · Mississippi Lime Co LLC DBA Mlc (MO)
Westlake Royal Roofing - Lathrop stamps LIGHT volume with a dominant OFFSITE pathway (100.0% off-site transfers) across 2 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 3.9K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Epredia and Pilkington Na Inc.
Westlake Royal Roofing - Lathrop vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
3.9K lbs Top 45% higher than 55% 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
Westlake Royal Roofing - Lathrop: carcinogen-lbs share on Form-R
Among the 3,265 Nonmetallic Mineral Product facilities in this database, Westlake Royal Roofing - Lathrop reports the 470th-largest volume, placing it in the top 14.4% of its sector. Carcinogen-classified chemicals make up 50.3% of the reported pounds, not just of the chemical count. Scale peers outside California include Epredia and Pilkington Na Inc.
Carcinogen-heavy means ≥50% of pounds (50.3% here), not of chemical count. EPA/IARC classification ≠ site risk.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Westlake Royal Roofing - Lathrop's total reported releases rose from 340 lb in 2022 to 409 lb in 2023, based on EPA TRI filings.
- Westlake Royal Roofing - Lathrop's off-site transfers rose from 340 lb in 2022 to 409 lb in 2023, based on EPA TRI filings.
Westlake Royal Roofing - Lathrop Form-R facts
Compare this facility
See how Westlake Royal Roofing - Lathrop stacks up against nearby facilities and the typical reporter.
About the same as 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 Westlake Royal Roofing - Lathrop releases toxic chemicals into the environment. Total: 3.9K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 138% (172 lbs to 409 lbs).
Westlake Royal Roofing - Lathrop: annual Form-R pounds
LIGHT site · OFFSITE pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Westlake Royal Roofing - Lathrop year-over-year reported totals (increased by 138% 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: Lead.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 172 lbs | 1 |
| 2020 | 519 lbs | 1 |
| 2021 | 2.4K lbs | 2 |
| 2022 | 340 lbs | 1 |
| 2023 | 409 lbs | 1 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 1 of 2 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Lead | 2.0K lbs | Carcinogen |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 1.9K lbs | - |
Westlake Royal Roofing - Lathrop · OFFSITE-pathway site
Nearest TRI Facilities to Westlake Royal Roofing - Lathrop
Closest other reporters in California - including Westlake Royal Roofing - French Camp, California Natural Products, Calaveras Materials Inc - Lathrop Rmc, ordered by distance.
Showing 8 of 1,148 other reporting facilities in California.
Similar Nonmetallic Mineral Product Facilities
Other Nonmetallic Mineral Product facilities with similar total release volumes (±80%), outside California - e.g. Epredia, Pilkington Na Inc, Mississippi Lime Co LLC DBA Mlc.
Compare beyond California
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Westlake Royal Roofing - Lathrop on cumulative reported pounds (3.9K lbs) and distinct chemical count (2). Release-pound peers include Shell Fowlerville, Kureha Pga LLC, Ball Metalpack LLC. 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.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Westlake Corp Facilities
Same-parent TRI sites ranked by reported releases - including Westlake Longview Corp, Westlake US 2 LLC, Westlake Polymers LLC.
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, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region); nearby reporters include Westlake Royal Roofing - French Camp. Westlake Royal Roofing - Lathrop stamps LIGHT volume · OFFSITE 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 Westlake Royal Roofing - Lathrop TRI extract (LIGHT · OFFSITE · CARC-HEAVY · lead Lead) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Westlake Royal Roofing - Lathrop totals are self-reported EPCRA §313 estimates for Lathrop, CA, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 327390 · Nonmetallic Mineral Product. 1.9% of San Joaquin TRI pounds in this extract. Nearest ABS peer: Shell Fowlerville (Δ 3 lbs). Pounds ≠ exposure.
Westlake Royal Roofing - Lathrop stamps LIGHT volume · OFFSITE pathway · CARC-HEAVY · lead Lead. 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