Clean Water Act discharge permit · NPDES WY0002241
GWEN KNAPP BATTERY, (Unknown City), WY: NPDES WY0002241 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
GWEN KNAPP BATTERY, held by PRINCIPLE PETROLEUM LLC, holds NPDES permit WY0002241. EPA’s file records it issued September 25, 2023 and expiring August 31, 2028. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | GWEN KNAPP BATTERY |
|---|---|
| Permittee as filed | PRINCIPLE PETROLEUM LLC |
| NPDES ID | WY0002241 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 25, 2023 |
| Expiration date | August 31, 2028 |
| Issuing agency | Wyoming Department of Environmental Quality |
| Address | (Unknown City), WY |
| Subwatershed | Oregon Coulee (HUC 100800110103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 5With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Radium 226, total | 1 | 13 | 11 | June 30, 2019 | 185% over the limit |
| Flow | 4 | 28 | 0 | ||
| pH | 6 | 16 | 0 | ||
| Sulfide, total [as S] | 4 | 12 | 0 | ||
| Produced water, oil and grease | 2 | 6 | 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 WY0002241.
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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Start the watch
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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 WY0002241 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.