Clean Water Act discharge permit · NPDES AKG315211
TYONEK GAS PLATFORM, Anchorage, AK: NPDES AKG315211 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 28Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
TYONEK GAS PLATFORM, held by Luke Saugier - Hilcorp Alaska LLC, holds NPDES permit AKG315211. EPA’s file records it issued March 1, 2022 and expiring December 31, 2026. 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 | TYONEK GAS PLATFORM |
|---|---|
| Permittee as filed | Luke Saugier - Hilcorp Alaska LLC |
| NPDES ID | AKG315211 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 1, 2022 |
| Expiration date | December 31, 2026 |
| Issuing agency | Alaska Department of Environmental Conservation |
| Address | Anchorage, AK 99503 |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 28Pollutants on file
- 28Under a numeric limit
- 5With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Flow | 5 | 6 | 0 | ||
| Cadmium [Cd], in barite, dry weight | 1 | 5 | 0 | ||
| Mercury [Hg], in barite, dry weight | 1 | 5 | 0 | ||
| Drilling fluids, discharge rate | 2 | 4 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 2 | 0 | ||
| pH | 12 | 0 | 0 | ||
| Oil and grease | 10 | 0 | 0 | ||
| Volume | 9 | 0 | 0 | ||
| Hydrocarbons, aromatic | 6 | 0 | 0 | ||
| Oil and grease visual | 6 | 0 | 0 | ||
| Hydrocarbon, aqueous | 5 | 0 | 0 | ||
| Number of Events | 4 | 0 | 0 | ||
| Free Oil | 4 | 0 | 0 | ||
| Solids, total suspended | 2 | 0 | 0 | ||
| Copper, total recoverable | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Flow rate, domestic | 2 | 0 | 0 | ||
| Toxicity, Chronic | 2 | 0 | 0 | ||
| Turbidity | 1 | 0 | 0 | ||
| Silver total recoverable | 1 | 0 | 0 | ||
| Zinc, total recoverable | 1 | 0 | 0 | ||
| Drilling fluid, toxicity | 1 | 0 | 0 | ||
| Manganese, total recoverable | 1 | 0 | 0 | ||
| Floating solids, waste or visible foam-visual | 1 | 0 | 0 | ||
| Flow rate, deck drainage | 1 | 0 | 0 | ||
| Mercury, total [as Hg] | 1 | 0 | 0 | ||
| Drilling fluids, free oil | 1 | 0 | 0 | ||
| Drill cuttings, free oil | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES AKG315211.
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 AKG315211.
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 AKG315211 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.