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Oil And Gas Exploration Services, Anchorage, Alaska. NPDES permit AK0053690 expired Jun 15, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Drilling fluid, end of well, 96-hr LC50 | minimum | ≥ 3 % | all year | 001 |
| Drilling fluid, toxicity | minimum | ≥ 3 % | all year | 001 |
| Fuel, Diesel, #1 Occurrences | monthly average | ≤ 0 occur/mo | all year | 001 |
| Fuel, Diesel, #1 Occurrences | total | ≤ 0 occur/mo | all year | 001 |
| Free Oil | total | ≤ 0 occur/mo | all year | 001 |
| Cadmium [Cd], in barite, dry weight | minimum | report only (mg/kg) | all year | 001 |
| Cadmium [Cd], in barite, dry weight | monthly average | report only (mg/kg) | all year | 001 |
| Cadmium [Cd], in barite, dry weight | maximum | ≤ 3 mg/kg | all year | 001 |
| Mercury [Hg], in barite, dry weight | minimum | report only (mg/kg) | all year | 001 |
| Mercury [Hg], in barite, dry weight | monthly average | report only (mg/kg) | all year | 001 |
| Mercury [Hg], in barite, dry weight | maximum | ≤ 1 mg/kg | all year | 001 |
| Drilling fluids, discharge rate | monthly average | ≤ 0 bbl/hr | all year | 001 |
| Drilling fluids, discharge rate | daily maximum | ≤ 0 bbl/hr | all year | 001 |
| Drilling fluids, discharge rate | monthly average | ≤ 500 bbl/hr | all year | 001 |
| Drilling fluids, discharge rate | daily maximum | ≤ 500 bbl/hr | all year | 001 |
| Drilling fluids, discharge rate | monthly average | ≤ 500 bbl/hr | all year | 001 |
| Drilling fluids, discharge rate | daily maximum | ≤ 500 bbl/hr | all year | 001 |
| Drilling fluids, discharge rate | monthly average | ≤ 500 bbl/hr | all year | 001 |
| Drilling fluids, discharge rate | daily maximum | ≤ 500 bbl/hr | all year | 001 |
| Drilling fluids, volume | monthly average | report only (Mgal) | all year | 001 |
| Drilling fluids, volume | daily maximum | report only (Mgal) | all year | 001 |
| Free Oil | value | ≤ 0 occur/mo | all year | 002 |
| Free Oil Visual Sheen | value | ≤ 0 N=0;Y=1 | all year | 002 |
| Volume | monthly total | report only (Mgal/mo) | all year | 002 |
| Floating solids, waste or visible foam-visual | value | ≤ 0 N=0;Y=1 | all year | 004 |
| Chlorine, total residual | maximum | report only (mg/L) | all year | 004 |
| Volume | monthly total | report only (Mgal/mo) | all year | 004 |
| Oil and grease visual | value | ≤ 0 N=0;Y=1 | all year | 004 |
| Free Oil | value | ≤ 0 occur/mo | all year | 006 |
| Free Oil Visual Sheen | value | ≤ 0 N=0;Y=1 | all year | 006 |
| Volume | maximum | report only (MGD) | all year | 006 |
| Water Treatment Additives Presence | value | report only (N=0;Y=1) | all year | 008 |
| Free Oil | value | ≤ 0 occur/mo | all year | 008 |
| Free Oil Visual Sheen | value | ≤ 0 N=0;Y=1 | all year | 008 |
| Volume | maximum | report only (MGD) | all year | 008 |
| Toxicity, Chronic | maximum | report only (tox chronic) | all year | 008 |
| Toxicity, Chronic | maximum | report only (tox chronic) | all year | 008 |
| Water Treatment Additives Presence | value | report only (N=0;Y=1) | all year | 009 |
| Free Oil | value | ≤ 0 occur/mo | all year | 009 |
| Free Oil Visual Sheen | value | ≤ 0 N=0;Y=1 | all year | 009 |
| Volume | maximum | report only (MGD) | all year | 009 |
| Toxicity, Chronic | maximum | report only (tox chronic) | all year | 009 |
| Toxicity, Chronic | maximum | report only (tox chronic) | all year | 009 |
| Free Oil | value | ≤ 0 occur/mo | all year | 010 |
| Free Oil Visual Sheen | value | ≤ 0 N=0;Y=1 | all year | 010 |
| Volume | maximum | report only (MGD) | all year | 010 |
| Free Oil | value | ≤ 0 occur/mo | all year | 012 |
| Free Oil Visual Sheen | value | ≤ 0 N=0;Y=1 | all year | 012 |
| Volume | maximum | report only (MGD) | all year | 012 |
| Free Oil | value | ≤ 0 occur/mo | all year | 013 |
| Free Oil Visual Sheen | value | ≤ 0 N=0;Y=1 | all year | 013 |
| Volume | maximum | report only (MGD) | all year | 013 |
| pH | single sample | ≤ 6 SU | all year | 016 |
| pH | maximum | ≤ 9 SU | all year | 016 |
| Oil and grease | monthly average | ≤ 29 mg/L | all year | 016 |
| Oil and grease | daily maximum | ≤ 42 mg/L | all year | 016 |
| Hydrocarbons, aromatic | single sample | report only (ug/L) | all year | 016 |
| Hydrocarbon, aqueous | single sample | report only (ug/L) | all year | 016 |
| Number of Events | monthly total | report only (#) | all year | 016 |
| Free Oil | value | ≤ 0 occur/mo | all year | 016 |
| Oil based fluids, non-aqueous based drilling fluids and cuttings | value | ≤ 0 N=0;Y=1 | all year | 016 |
| Volume | daily maximum | report only (MGD) | all year | 016 |
| Toxicity, Chronic | single sample | report only (tox chronic) | all year | 016 |
| Toxicity, Chronic | single sample | report only (tox chronic) | all year | 016 |
| pH | single sample | ≤ 6 SU | all year | 018 |
| pH | maximum | ≤ 9 SU | all year | 018 |
| Oil and grease | monthly average | ≤ 29 mg/L | all year | 018 |
| Oil and grease | daily maximum | ≤ 42 mg/L | all year | 018 |
| Hydrocarbons, aromatic | single sample | report only (ug/L) | all year | 018 |
| Hydrocarbon, aqueous | single sample | report only (ug/L) | all year | 018 |
| Number of Events | monthly total | report only (#) | all year | 018 |
| Free Oil | value | ≤ 0 occur/mo | all year | 018 |
| Oil based fluids, non-aqueous based drilling fluids and cuttings | value | ≤ 0 N=0;Y=1 | all year | 018 |
| Volume | daily maximum | report only (MGD) | all year | 018 |
| Toxicity, Chronic | single sample | report only (tox chronic) | all year | 018 |
| Toxicity, Chronic | single sample | report only (tox chronic) | all year | 018 |
| pH | single sample | ≤ 6 SU | all year | 019 |
| pH | maximum | ≤ 9 SU | all year | 019 |
| Oil and grease | monthly average | ≤ 29 mg/L | all year | 019 |
| Oil and grease | daily maximum | ≤ 42 mg/L | all year | 019 |
| Hydrocarbons, aromatic | single sample | report only (ug/L) | all year | 019 |
| Hydrocarbon, aqueous | single sample | report only (ug/L) | all year | 019 |
| Number of Events | monthly total | report only (#) | all year | 019 |
| Free Oil | value | ≤ 0 occur/mo | all year | 019 |
| Oil based fluids, non-aqueous based drilling fluids and cuttings | value | ≤ 0 N=0;Y=1 | all year | 019 |
| Volume | daily maximum | report only (MGD) | all year | 019 |
| Toxicity, Chronic | single sample | report only (tox chronic) | all year | 019 |
| Toxicity, Chronic | single sample | report only (tox chronic) | all year | 019 |
Cited limits by parameter: Alaska's rules and the federal ones.
Same industry: the 11 Oil and Gas Extraction permits in Alaska.
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Your permit document is the final word. As JSON: /api/v1/permits/AK0053690 · MCP: https://passage-data.com/mcp