Clean Water Act discharge permit · NPDES CAU000698
RALPH MEST AND SONS, Gardena, CA: NPDES CAU000698 discharge permit, effluent exceedances, inspections, penalties
- Not neededPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
RALPH MEST AND SONS, held by Ralph Mest and Sons, holds NPDES permit CAU000698. 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 RALPH MEST AND SONS: its NPDES ID, its permit type and status, its its address in Gardena, California. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CAU000698.
Identity
| Facility as filed | RALPH MEST AND SONS |
|---|---|
| Permittee as filed | Ralph Mest and Sons |
| NPDES ID | CAU000698 |
| Permit status | Not needed |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Address | Gardena, CA 90247 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lower Dominguez Channel (HUC 180701060102) |
| Other EPA IDs (FRS) | RCRA handler CAL000263637 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES CAU000698.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES CAU000698.
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.
Watch this permit
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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 CAU000698 there.
Nearby on the register
- Discharge permits in Gardena
- Every permit record in Gardena, A to Z
- Discharge permits in California
- Every permit record in California, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.