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Hazardous waste handler · EPA ID CAT080010796

PHILLIPS 66 SANTA MARIA REFINERY, Arroyo Grande, CA: hazardous-waste inspections, violations, penalties

Counts cover every year in the register file; the lists below are the dated events since 2017. The most recent inspection on file is dated June 10, 2025.

Identity

Name as filedPHILLIPS 66 SANTA MARIA REFINERY
EPA IDCAT080010796
Address2555 WILLOW RD RTE 3, Arroyo Grande, CA 93420
CountySan Luis Obispo
Generator statusVery small quantity generator
IndustryPetroleum and coal products manufacturing (NAICS 324110)
Most cited ruleStandards for permitted TSD facilities (40 CFR 264)
Other EPA IDs (FRS)NPDES permit CA0000051; ICIS-AIR source CASLO0000607900509

Cited to rcra_downloads.zip/RCRA_FACILITIES.csv; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Inspections since 2017

DateInspectionByViolation found
June 10, 2025COMPLIANCE EVALUATION INSPECTIONStateYes
May 24, 2022COMPLIANCE EVALUATION INSPECTIONStateNo

Cited to rcra_downloads.zip/RCRA_EVALUATIONS.csv.

Violations since 2017

DeterminedRuleWhat the register saysByReturned to compliance
June 10, 2025XXSState Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirementsStateJuly 23, 2025

Cited to rcra_downloads.zip/RCRA_VIOLATIONS.csv.

Enforcement and penalties since 2017

DateActionFormalByPenalty
July 9, 2025WRITTEN INFORMALNoState
July 9, 2025INSPECTION REPORT W/VIOLATIONS (MAILED DATE)YesState

Cited to rcra_downloads.zip/RCRA_ENFORCEMENTS.csv.

Hazardous waste codes (EPA Biennial Report)

Report cycleFederal waste codeCode family
2021D001Characteristic hazardous waste
2021D008Characteristic hazardous waste
2021D011Characteristic hazardous waste
2021K050Hazardous waste from a specific source
2021K051Hazardous waste from a specific source

Cited to EPA Envirofacts’ BR_REPORTING (the Biennial Report, filed by large-quantity generators and treatment/storage/disposal facilities every odd year).

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Nearby on the register

Figures from EPA’s RCRAInfo download, loaded September 15, 2026.

What this page shows

This public-records page covers hazardous-waste handler PHILLIPS 66 SANTA MARIA REFINERY, EPA ID CAT080010796, in Arroyo Grande, CA, and lists 16 inspections, 2 violations, and 3 formal actions on file, with $40,000 in final penalties. The most recent inspection on file is dated June 10, 2025.