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Clean Water Act discharge permit · NPDES CAZ504551

BAY STATE MILLING COMPANY, Woodland, CA: NPDES CAZ504551 discharge permit, effluent exceedances, inspections, penalties

BAY STATE MILLING COMPANY, held by Bay State Milling Company, holds NPDES permit CAZ504551. EPA’s file records it issued March 11, 2019 and expiring June 30, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedBAY STATE MILLING COMPANY
Permittee as filedBay State Milling Company
NPDES IDCAZ504551
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 11, 2019
Expiration dateJune 30, 2020
Issuing agencyCA Waterboards
AddressWoodland, CA 95776
Receiving water impaired303(D) Listed
SubwatershedGoodnow Slough-Cache Creek (HUC 180201160704)
SIC2041 – Flour And Other Grain Mill Products
Other EPA IDs (FRS)RCRA handler CAL000469704

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same 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 CAZ504551.

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

DateWhat EPA recordedAgency
October 2, 2021WW Storm Water Non-Construction - CWA §308 Failure to submit required permit application infoST6

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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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 CAZ504551 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES CAZ504551 held by Bay State Milling Company in Woodland, CA, with status administratively continued, as EPA's file stood when Velarion loaded it on October 14, 2026. The figures listed are 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and the permit is classed as a Minor Discharger.