Clean Water Act discharge permit · NPDES CA0081876
MAMMOTH,SUTRO,KEYSTONE ET AL, Redding, CA: NPDES CA0081876 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 8Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
MAMMOTH,SUTRO,KEYSTONE ET AL, held by MINING REMEDIAL RECOVERY CO, holds NPDES permit CA0081876, which discharges to Lake Shasta. EPA’s file records it issued September 6, 2002 and expiring September 1, 2007. 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 filed | MAMMOTH,SUTRO,KEYSTONE ET AL |
|---|---|
| Permittee as filed | MINING REMEDIAL RECOVERY CO |
| NPDES ID | CA0081876 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 6, 2002 |
| Expiration date | September 1, 2007 |
| Address | Redding, CA 96002 |
| Receiving water | LAKE SHASTA |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Sugarloaf Creek-Sacramento River (HUC 180200050406) |
| SIC | 1021 – Copper Ores |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 3With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Zinc, percent removal | 10 | 94 | 54 | December 31, 2016 | 62,300% over the limit |
| Cadmium, percent removal | 10 | 94 | 54 | December 31, 2016 | 21,900% over the limit |
| Copper, percent removal | 10 | 79 | 39 | December 31, 2013 | 40,700% over the limit |
| pH | 28 | 193 | 0 | ||
| Flow, in conduit or thru treatment plant | 14 | 58 | 0 | ||
| Zinc, total recoverable | 14 | 56 | 0 | ||
| Cadmium, total recoverable | 14 | 56 | 0 | ||
| Copper, total recoverable | 14 | 56 | 0 |
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 CA0081876.
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 CA0081876 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.