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Klint VanWingerden - Alyeska Pipeline Service Company

Crude Petroleum Pipelines, major discharger, Valdez, Alaska. NPDES permit AK0023248 expired Nov 30, 2024; its limits still apply. Last 12 months: over a limit once (last October 2025), 20 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form AM monthly (19 values), outfall 001 form AQ quarterly (5 values), outfall 002 form AM monthly (12 values), outfall 001 form AS twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 24 required values missing, 0 of 30 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025Enterococci, daily maximum17329 MPN/100mL≤ 4225 CFU/100mL310%

Limits in force (37)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 25 mg/Lall year001
Solids, total suspendeddaily maximum≤ 40 mg/Lall year001
Solids, total suspendeddaily maximum≤ 170 mg/Lall year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, dissolvedmonthly averagereport only (mg/L)all year001
Phosphorus, dissolveddaily maximumreport only (mg/L)all year001
Zinc, total recoverablemonthly average≤ 1592 ug/Lall year001
Zinc, total recoverabledaily maximum≤ 4163 ug/Lall year001
Oil and greasemonthly averagereport only (mg/L)all year001
Oil and greasedaily maximumreport only (mg/L)all year001
Hydrocarbons, aromaticmonthly averagereport only (ug/L)all year001
Hydrocarbons, aromaticdaily maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantmonthly average≤ 5.54 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 10.1 MGDall year001
Hydrocarbon, aqueousmonthly averagereport only (ug/L)all year001
Hydrocarbon, aqueousdaily maximumreport only (ug/L)all year001
Oil & grease, total recoverablemonthly averagereport only (mg/L)all year001
Oil & grease, total recoverabledaily maximumreport only (mg/L)all year001
Densitymonthly averagereport only (kg/m3)all year001
Densitydaily maximumreport only (kg/m3)all year001
Toxicity, Chronicmaximumreport only (tox chronic)all year001
Toxicity, Chronicmaximumreport only (tox chronic)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year002
BOD, 5-day, 20 deg. Cdaily maximum≤ 60 mg/Lall year002
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 30 mg/Lall year002
Solids, total suspendeddaily maximum≤ 60 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year002
Flow, in conduit or thru treatment plantdaily maximum≤ 10000 gal/dall year002
Enterococcimonthly average≤ 2106 CFU/100mLall year002
Enterococcidaily maximum≤ 4225 CFU/100mLall year002
Coliform, fecal generalmonthly averagereport only (MPN/100mL)all year002
Coliform, fecal generaldaily maximumreport only (MPN/100mL)all year002

How strict are these limits?

Cited limits by parameter: Alaska's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AK0023248 · MCP: https://passage-data.com/mcp