EPA TRI Facility · Petroleum
Phillips 66 Co-Santa Maria Refinery
Arroyo Grande, CA · Parent: Phillips 66 Co
- Total releases
- 39.2K lbs
- Chemicals reported
- 24
- Carcinogens
- 8
- Primary pathway
- Air Releases
AIR Form-R mix
Phillips 66 Co-Santa Maria Refinery: how the 39.2K lbs splits
39.2K lbs across all reported pathways
- Air Releases 34.7K lbs 88.4%
- Water Discharges 4.5K lbs 11.4%
- Land Disposal 36 lbs 0.1%
- Off-site Transfers 35 lbs 0.1%
Phillips 66 Co-Santa Maria Refinery's 39.2K lbs Form-R total is AIR - air releases is 88.4% of the bar. Next segment: water discharges at 11.4%. Leading chemical by pounds: Hydrogen sulfide.
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-LEAN
Phillips 66 Co-Santa Maria Refinery is an EPA Toxics Release Inventory reporter in Arroyo Grande, CA, in the petroleum sector. It reported 815 lbs of releases across 23 chemicals in 2023, and 39.2K lbs in total across its 2019-2023 reporting years. That ranks 6,697 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. Phillips 66 Co-Santa Maria Refinery is pounds #234 and chemical-count #19 at 39.2K 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). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Martin Marietta California Ready-Mix LLC - Nipomo Ready Mix; The Pictsweet Co - Santa Maria Ca Plant; Okonite Co Inc; Entegris - San Luis Obispo. Similar-scale Petroleum peers outside California: Iko Southeast Inc; Valor LLC; Owens Corning - Medina; Fuchs Lubricants Co-Corporate Office. Other Phillips 66 Co sites in this extract: Phillips 66 Lake Charles Refinery; Phillips 66 Co Sweeny Refinery Complex; Philllips 66 Co Borger Refinery; Phillips 66 Ponca City Site. Largest disclosed chemicals by pounds: Hydrogen sulfide; Ethylene; Ammonia; Toluene.
Compare Phillips 66 Co-Santa Maria Refinery with
Nearest reporters in California
- Martin Marietta California Ready-Mix LLC - Nipomo Ready Mix Nipomo · 0 lbs
- The Pictsweet Co - Santa Maria Ca Plant Santa Maria · 63.6K lbs
- Okonite Co Inc Santa Maria · 120.4K lbs
- Entegris - San Luis Obispo San Luis Obispo · 2.0K lbs
Similar-scale Petroleum sites elsewhere: Iko Southeast Inc (AL) · Valor LLC (KY) · Owens Corning - Medina (OH)
Phillips 66 Co-Santa Maria Refinery stamps LIGHT volume with a dominant AIR pathway (88.4% air releases) across 24 chemicals · 8 carcinogen-classified. Cumulative Form-R extract: 39.2K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Iko Southeast Inc and Valor LLC.
Phillips 66 Co-Santa Maria Refinery vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
39K lbs Top 26% higher than 74% 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
Phillips 66 Co-Santa Maria Refinery in the Petroleum sector extract
Among the 902 Petroleum facilities in this database, Phillips 66 Co-Santa Maria Refinery reports the 181st-largest volume, placing it in the top 20.1% of its sector. Scale peers outside California include Iko Southeast Inc and Valor LLC.
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
- Phillips 66 Co-Santa Maria Refinery's total reported releases fell from 8.3 thousand lb in 2022 to 815 lb in 2023, based on EPA TRI filings.
- Phillips 66 Co-Santa Maria Refinery's air releases fell from 8.2 thousand lb in 2022 to 732 lb in 2023, based on EPA TRI filings.
- Phillips 66 Co-Santa Maria Refinery's water releases fell from 126 lb in 2022 to 71 lb in 2023, based on EPA TRI filings.
Phillips 66 Co-Santa Maria Refinery Form-R facts
Compare this facility
See how Phillips 66 Co-Santa Maria Refinery stacks up against nearby facilities and the typical reporter.
3268838.3× more than the comparison
24.0× 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 Phillips 66 Co-Santa Maria Refinery releases toxic chemicals into the environment. Total: 39.2K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 93% (11.5K lbs to 815 lbs).
Phillips 66 Co-Santa Maria Refinery: 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 Phillips 66 Co-Santa Maria Refinery year-over-year reported totals (decreased by 93% 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: Hydrogen sulfide.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 11.5K lbs | 23 |
| 2020 | 10.3K lbs | 23 |
| 2021 | 8.3K lbs | 23 |
| 2022 | 8.3K lbs | 23 |
| 2023 | 815 lbs | 23 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 8 of 24 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Hydrogen sulfide | 16.4K lbs | - |
| Ethylene | 4.4K lbs | - |
| Ammonia | 4.2K lbs | - |
| Toluene | 4.2K lbs | - |
| Propylene | 2.7K lbs | - |
| Carbonyl sulfide | 2.2K lbs | - |
| n-Hexane | 1.1K lbs | - |
| Xylene (mixed isomers) | 1.0K lbs | - |
| Benzene | 986 lbs | Carcinogen |
| Cyclohexane | 716 lbs | - |
| Phenol | 371 lbs | - |
| 1,2,4-Trimethylbenzene | 278 lbs | - |
| Naphthalene | 218 lbs | Carcinogen |
| Ethylbenzene | 184 lbs | Carcinogen |
| Cumene | 74 lbs | Carcinogen |
| 1,3-Butadiene | 65 lbs | Carcinogen |
| Polycyclic aromatic compounds | 51 lbs | Carcinogen |
| Styrene | 42 lbs | Carcinogen |
| Biphenyl | 38 lbs | - |
| Benzo[g,h,i]perylene | 17 lbs | - |
| Mercury compounds | 5 lbs | - |
| Carbon disulfide | 2 lbs | - |
| Mercury And Mercury Compounds | 2 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Phillips 66 Co-Santa Maria Refinery · AIR-pathway site
Nearest TRI Facilities to Phillips 66 Co-Santa Maria Refinery
Closest other reporters in California - including Martin Marietta California Ready-Mix LLC - Nipomo Ready Mix, The Pictsweet Co - Santa Maria Ca Plant, Okonite Co Inc, 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. Iko Southeast Inc, Valor LLC, Owens Corning - Medina.
Compare beyond California
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Phillips 66 Co-Santa Maria Refinery on cumulative reported pounds (39.2K lbs) and distinct chemical count (24). Release-pound peers include Corning Optical Communications Llc-Hmtc, Faurecia Interior Systems, 3M Co - Medina. Chemical-count peers include Duke Energy Carolinas LLC - Belews Creek Steam Station, Kapstone Paper & Packaging Corp, Georgia-Pacific Cedar Springs 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.
- Corning Optical Communications Llc-Hmtc Hickory, NC · Electrical Equipment 39.2K lbs reported
- Faurecia Interior Systems Louisville, KY · Transportation Equipment 39.2K lbs reported
- 3M Co - Medina Medina, OH · Paper 39.3K lbs reported
- Nebraska Corn Processing LLC Cambridge, NE · Chemicals 39.3K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
- Duke Energy Carolinas LLC - Belews Creek Steam Station Walnut Cove, NC · Electric Utilities 24 chemicals
- Kapstone Paper & Packaging Corp North Charleston, SC · Paper 24 chemicals
- Georgia-Pacific Cedar Springs LLC Cedar Springs, GA · Paper 24 chemicals
- International Paper Pensacola Mill Cantonment, FL · Paper 24 chemicals
Other Phillips 66 Co Facilities
Same-parent TRI sites ranked by reported releases - including Phillips 66 Lake Charles Refinery, Phillips 66 Co Sweeny Refinery Complex, Philllips 66 Co Borger Refinery.
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 Hydrogen sulfide, Ethylene, Ammonia, Toluene; nearby reporters include Martin Marietta California Ready-Mix LLC - Nipomo Ready Mix. Phillips 66 Co-Santa Maria Refinery stamps LIGHT 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 Phillips 66 Co-Santa Maria Refinery TRI extract (LIGHT · AIR · CARC-LEAN · lead Hydrogen sulfide) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Phillips 66 Co-Santa Maria Refinery totals are self-reported EPCRA §313 estimates for Arroyo Grande, CA, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 324110 · Petroleum. 13.7% of San Luis Obispo TRI pounds in this extract. Nearest ABS peer: Corning Optical Communications Llc-Hmtc (Δ 7 lbs). Pounds ≠ exposure.
Phillips 66 Co-Santa Maria Refinery stamps LIGHT volume · AIR pathway · CARC-LEAN · lead Hydrogen sulfide. 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