Clean Water Act discharge permit · NPDES WA0052434
BUCKHORN MOUNTAIN MINE, Chesaw, WA: NPDES WA0052434 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 20Pollutants with an effluent exceedance
BUCKHORN MOUNTAIN MINE, held by Kinross-Crown Resources-Buckhorn Operations, holds NPDES permit WA0052434. EPA’s file records it issued February 27, 2014 and expiring February 28, 2019. 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.
Identity
| Facility as filed | BUCKHORN MOUNTAIN MINE |
|---|---|
| Permittee as filed | Kinross-Crown Resources-Buckhorn Operations |
| NPDES ID | WA0052434 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 27, 2014 |
| Expiration date | February 28, 2019 |
| Issuing agency | State |
| Address | Chesaw, WA 98844 |
| Subwatershed | Upper Myers Creek (HUC 170200020102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 0Under a numeric limit
- 22With a violation of any kind
- 20With 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 |
|---|---|---|---|---|---|
| Chloride [as Cl] | 0 | 1,871 | 1,871 | July 31, 2026 | 3,533% over the limit |
| Nitrite + Nitrate total [as N] | 0 | 1,378 | 1,378 | July 31, 2026 | 2,241% over the limit |
| Sulfate [as S] | 0 | 828 | 828 | July 31, 2026 | 559% over the limit |
| Solids, total dissolved | 0 | 794 | 794 | July 31, 2026 | 209% over the limit |
| Conductivity | 0 | 605 | 605 | July 31, 2026 | 133% over the limit |
| Iron, total [as Fe] | 0 | 323 | 323 | July 31, 2026 | 12,173% over the limit |
| Arsenic, total [as As] | 0 | 218 | 218 | July 31, 2026 | 580% over the limit |
| Oxygen, dissolved [DO] | 0 | 112 | 112 | July 31, 2026 | 114% over the limit |
| Manganese, total [as Mn] | 0 | 96 | 96 | July 31, 2026 | 317% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 82 | 82 | July 31, 2026 | 275% over the limit |
| Zinc, total [as Zn] | 0 | 43 | 43 | July 31, 2026 | 1,250% over the limit |
| Solids, total suspended | 0 | 47 | 29 | March 31, 2025 | 515% over the limit |
| Copper, total [as Cu] | 0 | 16 | 16 | August 31, 2023 | 354% over the limit |
| pH | 0 | 4 | 4 | October 31, 2013 | |
| Oil and grease, hexane extr method | 0 | 4 | 3 | March 31, 2017 | 276% over the limit |
| Mercury, total [as Hg] | 0 | 2 | 2 | December 31, 2010 | 56% over the limit |
| Turbidity | 0 | 1 | 1 | August 31, 2019 | |
| Lead, total [as Pb] | 0 | 1 | 1 | May 31, 2011 | 80% over the limit |
| Silver, total [as Ag] | 0 | 1 | 1 | February 28, 2011 | 99,999% over the limit |
| pH, maximum | 0 | 1 | 1 | October 31, 2010 | |
| Depth to water level ft below landsurface | 0 | 11 | 0 | ||
| Flow | 0 | 10 | 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 WA0052434.
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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Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.