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Clean Water Act discharge permit · NPDES CAZ470657

PHILLIPS 66 COMPANY, Arroyo Grande, CA: NPDES CAZ470657 discharge permit, effluent exceedances, inspections, penalties

PHILLIPS 66 COMPANY, held by Phillips 66 Company, holds NPDES permit CAZ470657. EPA’s file records it issued March 17, 2016 and expiring June 30, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for PHILLIPS 66 COMPANY: its NPDES ID, its permit type and status, its dates, its address in Arroyo Grande, California. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CAZ470657.

Identity

Facility as filedPHILLIPS 66 COMPANY
Permittee as filedPhillips 66 Company
NPDES IDCAZ470657
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedMarch 17, 2016
Expiration dateJune 30, 2020
Issuing agencyCA Waterboards
AddressArroyo Grande, CA 93420
Receiving water impaired303(D) Listed
SubwatershedOso Flaco Creek (HUC 180600060704)
Other EPA IDs (FRS)RCRA handler CAT080010796; ICIS-AIR source CASLO0000607900509

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES CAZ470657.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES CAZ470657.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID CAZ470657 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The Phillips 66 Company storm water industrial permit (NPDES ID CAZ470657) in Arroyo Grande is the only NPDES permit counted within the Oso Flaco Creek subwatershed, this one included. Of the 6 storm water industrial permits in San Luis Obispo County, this one included, 66.7% carry an earlier issue date than this permit's March 17, 2016 issuance. Among the 10 storm water industrial permits in San Luis Obispo County, 10.0% have a violation on file, and this permit records 0 pollutants with an effluent exceedance.