Erik Hernandez - City of Unalaska

NPDES permit AK0043451 · Major POTW · administratively continued, expires 2009-02-01 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2009-02-01 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

4values over a limit
0required values missing, on 0 form(s)
25of 30 forms filed late

Last period with anything received: 2026-08-31. Most often over: BOD, 5-day, 20 deg. C (2), pH (1), Flow, in conduit or thru treatment plant (1).

Reporting

Reports are due about 10 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (50)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMAXIMUM report only all year
001Temperature, water deg. centigradeMAXIMUM report only Mar, Jun, Sep, Dec
001Oxygen, dissolved [DO]MINIMUM >= 2 mg/L all year
001Oxygen, dissolved [DO]MAXIMUM <= 17 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 140 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 200 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 468 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 700 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 1501 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 2343 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMINIMUM >= 6.5 SU Mar, Jun, Sep, Dec
001pHMAXIMUM <= 8.5 SU all year
001pHMAXIMUM <= 8.5 SU Mar, Jun, Sep, Dec
001Solids, total suspendedMO AVG <= 140 mg/L all year
001Solids, total suspendedDAILY MX <= 200 mg/L all year
001Solids, total suspendedDAILY MX <= 468 mg/L all year
001Solids, total suspendedMO AVG <= 700 lb/d all year
001Solids, total suspendedDAILY MX <= 1501 lb/d all year
001Solids, total suspendedDAILY MX <= 2343 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG report only Mar, Jun, Sep, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only Mar, Jun, Sep, Dec
001Hardness, total [as CaCO3]DAILY MX report only Jan, Jul
001Hardness, total [as CaCO3]DAILY MX report only Jan, Jul
001Arsenic, total [as As]DAILY MX report only Jan, Jul
001Arsenic, total [as As]DAILY MX report only Jan, Jul
001Chromium, total [as Cr]DAILY MX report only Jan, Jul
001Chromium, total [as Cr]DAILY MX report only Jan, Jul
001Copper, total [as Cu]DAILY MX report only Jan, Jul
001Copper, total [as Cu]DAILY MX report only Jan, Jul
001Iron, total [as Fe]DAILY MX report only Jan, Jul
001Iron, total [as Fe]DAILY MX report only Jan, Jul
001Zinc, total [as Zn]DAILY MX report only Jan, Jul
001Zinc, total [as Zn]DAILY MX report only Jan, Jul
001Fecal coliform, MPN, EC med, 44.5 CMO AVG <= 10000 #/100mL all year
001Fecal coliform, MPN, EC med, 44.5 CDAILY MX <= 15000 #/100mL all year
001Hydrocarbons, aromaticDAILY MX <= 10 ug/L all year
001Hydrocarbons, aromaticDAILY MX <= 10 ug/L Mar, Jun, Sep, Dec
001Flow, in conduit or thru treatment plantMO AVG <= .6 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .9 MGD all year
001Chlorine, total residualMO AVG <= .17 mg/L all year
001Chlorine, total residualDAILY MX <= .34 mg/L all year
001Hydrocarbon, aqueousDAILY MX <= 15 ug/L all year
001Hydrocarbon, aqueousDAILY MX <= 15 ug/L Mar, Jun, Sep, Dec
001Coliform, fecal generalMO AVG <= 10000 #/100mL all year
001Coliform, fecal generalDAILY MX <= 15000 #/100mL all year
001BOD, 5-day, percent removalMN % RMV >= 30 % all year
001Solids, suspended percent removalMN % RMV >= 30 % all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states