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Clean Water Act discharge permit · NPDES CAZ468127

HIDDEN VALLEY AGGREGATE & PACKWAY MATERIALS CASSEL YARD, Cassel, CA: NPDES CAZ468127 discharge permit, effluent exceedances, inspections, penalties

HIDDEN VALLEY AGGREGATE & PACKWAY MATERIALS CASSEL YARD, held by Packway Materials, holds NPDES permit CAZ468127. EPA’s file records it issued January 12, 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 HIDDEN VALLEY AGGREGATE & PACKWAY MATERIALS CASSEL YARD: its NPDES ID, its permit type and status, its dates, its address in Cassel, California. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CAZ468127.

Identity

Facility as filedHIDDEN VALLEY AGGREGATE & PACKWAY MATERIALS CASSEL YARD
Permittee as filedPackway Materials
NPDES IDCAZ468127
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
IssuedJanuary 12, 2016
Expiration dateJune 30, 2020
Issuing agencyCA Waterboards
AddressCassel, CA 96016
SubwatershedLower Hat Creek Valley-Hat Creek (HUC 180200030710)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES CAZ468127.

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 CAZ468127.

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 CAZ468127 there.

Nearby on the register

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

What this page shows

The HIDDEN VALLEY AGGREGATE & PACKWAY MATERIALS CASSEL YARD is one of 1 storm water industrial permits on EPA's NPDES register in Cassel, including this one. It is also one of 1 NPDES permits in the Lower Hat Creek Valley-Hat Creek subwatershed, including this one. The permit records 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.