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Intalco Aluminum Corporation

Industrial or other facility, major discharger, Ferndale, Washington. NPDES permit WA0002950, in force until Oct 31, 2029. Last 12 months: over a limit 8 times (last August 2026), 12 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 0022 form MM monthly (1 value), outfall 0051 form MM monthly (18 values), outfall 011 form MM quarterly (6 values), outfall 012 form MM quarterly (6 values), outfall 051I form MM monthly (2 values), outfall D10 form 03 monthly (7 values), and 20 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
11 values over a limit, 11 required values missing, 0 of 162 reports late

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

Period endingParameterReportedLimitOver by
October 2025Number of operating tubes, weekly average14≤ 12 #17%
November 2025Number of operating tubes, weekly average14≤ 12 #17%
December 2025Number of operating tubes, weekly average14≤ 12 #17%
January 2026Number of operating tubes, weekly average14≤ 12 #17%
May 2026Number of operating tubes, weekly average13.5≤ 12 #13%
June 2026Number of operating tubes, weekly average14≤ 12 #17%
July 2026Number of operating tubes, weekly average14≤ 12 #17%
August 2026Number of operating tubes, weekly average14≤ 12 #17%

Limits in force (124)

ParameterStatisticLimitMonthsOutfall
Discharge event observation [Visual Monitoring]single readingreport only (N=0;Y=1) (alert, not enforceable)all year0022
Arsenic, total [as As]single readingreport only (ug/L) (alert, not enforceable)all year002C
Beryllium, total [as Be]single readingreport only (ug/L) (alert, not enforceable)all year002C
Cadmium, total [as Cd]single readingreport only (ug/L) (alert, not enforceable)all year002C
Chromium, total [as Cr]single readingreport only (ug/L) (alert, not enforceable)all year002C
Copper, total [as Cu]single readingreport only (ug/L) (alert, not enforceable)all year002C
Lead, total [as Pb]single readingreport only (ug/L) (alert, not enforceable)all year002C
Thallium, total [as Tl]single readingreport only (ug/L) (alert, not enforceable)all year002C
Nickel, total [as Ni]single readingreport only (ug/L) (alert, not enforceable)all year002C
Silver, total [as Ag]single readingreport only (ug/L) (alert, not enforceable)all year002C
Zinc, total [as Zn]single readingreport only (ug/L) (alert, not enforceable)all year002C
Antimony, total [as Sb]single readingreport only (ug/L) (alert, not enforceable)all year002C
Selenium, total [as Se]single readingreport only (ug/L) (alert, not enforceable)all year002C
Chromium, hexavalent dissolved [as Cr]single readingreport only (ug/L) (alert, not enforceable)all year002C
Mercury, total [as Hg]single readingreport only (ng/L) (alert, not enforceable)all year002C
BOD, 5-day, 20 deg. Cmonthly average≤ 40 mg/Lall year0051
BOD, 5-day, 20 deg. Cweekly average≤ 60 mg/Lall year0051
BOD, 5-day, 20 deg. Cmonthly average≤ 22.4 lb/dall year0051
BOD, 5-day, 20 deg. Cweekly average≤ 32.4 lb/dall year0051
pHdaily minimum≥ 6 SUall year0051
pHdaily maximum≤ 9 SUall year0051
Solids, total suspendedmonthly average≤ 40 mg/Lall year0051
Solids, total suspendedweekly average≤ 60 mg/Lall year0051
Solids, total suspendedmonthly average≤ 22.4 lb/dall year0051
Solids, total suspendedweekly average≤ 32.4 lb/dall year0051
Arsenic, total [as As]single readingreport only (ug/L) (alert, not enforceable)all year0051
BOD, percent removal [total]monthly average minimumreport only (%) (alert, not enforceable)all year0051
Number of operating tubesweekly average≤ 12 #all year0051
Enterococcisingle readingreport only (#/100mL) (alert, not enforceable)all year0051
Coliform, fecal generalmonthly geometric mean≤ 200 MPN/100mLall year0051
Coliform, fecal generalweekly geometric mean≤ 400 MPN/100mLall year0051
Flowdaily maximumreport only (MGD) (alert, not enforceable)all year0051
Flowmonthly averagereport only (MGD) (alert, not enforceable)all year0051
Solids, suspended percent removalmonthly average minimumreport only (%) (alert, not enforceable)all year0051
Turbiditysingle readingreport only (NTU) (alert, not enforceable)all year011
pHsingle readingreport only (SU) (alert, not enforceable)all year011
Fluoride, total [as F]single readingreport only (mg/L) (alert, not enforceable)all year011
Arsenic, total [as As]single readingreport only (ug/L) (alert, not enforceable)all year011
Beryllium, total [as Be]single readingreport only (ug/L) (alert, not enforceable)all year011
Cadmium, total [as Cd]single readingreport only (ug/L) (alert, not enforceable)all year011
Chromium, total [as Cr]single readingreport only (ug/L) (alert, not enforceable)all year011
Copper, total [as Cu]single readingreport only (ug/L) (alert, not enforceable)all year011
Copper, total [as Cu]single readingreport only (ug/L) (alert, not enforceable)all year011
Lead, total [as Pb]single readingreport only (ug/L) (alert, not enforceable)all year011
Thallium, total [as Tl]single readingreport only (ug/L) (alert, not enforceable)all year011
Nickel, total [as Ni]single readingreport only (ug/L) (alert, not enforceable)all year011
Silver, total [as Ag]single readingreport only (ug/L) (alert, not enforceable)all year011
Zinc, total [as Zn]single readingreport only (ug/L) (alert, not enforceable)all year011
Zinc, total [as Zn]single readingreport only (ug/L) (alert, not enforceable)all year011
Antimony, total [as Sb]single readingreport only (ug/L) (alert, not enforceable)all year011
Aluminum, total [as Al]single readingreport only (mg/L) (alert, not enforceable)all year011
Selenium, total [as Se]single readingreport only (ug/L) (alert, not enforceable)all year011
Chromium, hexavalent dissolved [as Cr]single readingreport only (ug/L) (alert, not enforceable)all year011
Mercury, total [as Hg]single readingreport only (ng/L) (alert, not enforceable)all year011
Turbiditysingle readingreport only (NTU) (alert, not enforceable)all year012
pHsingle readingreport only (SU) (alert, not enforceable)all year012
Fluoride, total [as F]single readingreport only (mg/L) (alert, not enforceable)all year012
Arsenic, total [as As]single readingreport only (ug/L) (alert, not enforceable)all year012
Beryllium, total [as Be]single readingreport only (ug/L) (alert, not enforceable)all year012
Cadmium, total [as Cd]single readingreport only (ug/L) (alert, not enforceable)all year012
Chromium, total [as Cr]single readingreport only (ug/L) (alert, not enforceable)all year012
Copper, total [as Cu]single readingreport only (ug/L) (alert, not enforceable)all year012
Copper, total [as Cu]single readingreport only (ug/L) (alert, not enforceable)all year012
Lead, total [as Pb]single readingreport only (ug/L) (alert, not enforceable)all year012
Thallium, total [as Tl]single readingreport only (ug/L) (alert, not enforceable)all year012
Nickel, total [as Ni]single readingreport only (ug/L) (alert, not enforceable)all year012
Silver, total [as Ag]single readingreport only (ug/L) (alert, not enforceable)all year012
Zinc, total [as Zn]single readingreport only (ug/L) (alert, not enforceable)all year012
Zinc, total [as Zn]single readingreport only (ug/L) (alert, not enforceable)all year012
Antimony, total [as Sb]single readingreport only (ug/L) (alert, not enforceable)all year012
Aluminum, total [as Al]single readingreport only (mg/L) (alert, not enforceable)all year012
Selenium, total [as Se]single readingreport only (ug/L) (alert, not enforceable)all year012
Chromium, hexavalent dissolved [as Cr]single readingreport only (ug/L) (alert, not enforceable)all year012
Mercury, total [as Hg]single readingreport only (ng/L) (alert, not enforceable)all year012
BOD, 5-day, 20 deg. Csingle readingreport only (mg/L) (alert, not enforceable)all year051I
Solids, total suspendedsingle readingreport only (mg/L) (alert, not enforceable)all year051I
Solids, total suspendedmonthly average≤ 35 mg/Lall yearD10
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall yearD10
Oil and grease, hexane extr methodmonthly average≤ 5 mg/Lall yearD10
Fluoride, total [as F]monthly average≤ 35 mg/Lall yearD10
Arsenic, total [as As]single readingreport only (ug/L) (alert, not enforceable)all yearD10
Copper, total [as Cu]single readingreport only (ug/L) (alert, not enforceable)all yearD10
Zinc, total [as Zn]single readingreport only (ug/L) (alert, not enforceable)all yearD10
Aluminum, total [as Al]monthly average≤ 10 mg/Lall yearD10
Benzo[a]pyrenedaily maximum≤ 7.5 ug/Lall yearD10
pH, maximumdaily maximum≤ 9 SU (alert, not enforceable)all yearD10
pH, minimumdaily minimum≥ 6 SU (alert, not enforceable)all yearD10
Flowmonthly averagereport only (MGD) (alert, not enforceable)all yearD10
Daily excursion time [min]monthly total≤ 446 minall yearD10
Population servedmonthly averagereport only (pop serv) (alert, not enforceable)all yearPERS
Solids, total suspendedsingle readingreport only (mg/L) (alert, not enforceable)all yearPOND
Fluoride, total [as F]single readingreport only (mg/L) (alert, not enforceable)all yearPOND
Aluminum, total [as Al]single readingreport only (mg/L) (alert, not enforceable)all yearPOND
pH, maximumdaily maximum≤ 9 SU (alert, not enforceable)all yearPOND
pH, minimumdaily minimum≥ 6 SU (alert, not enforceable)all yearPOND
Flowmonthly averagereport only (cfs) (alert, not enforceable)all yearPOND
Arsenic, total [as As]single readingreport only (ug/L) (alert, not enforceable)all yearPUD
Flowsingle readingreport only (MGD) (alert, not enforceable)all yearPWS
Rainfallmonthly totalreport only (in) (alert, not enforceable)all yearRAIN
Solids, total suspendedsingle readingreport only (mg/L) (alert, not enforceable)all yearSEC
Cyanide, weak acid, dissociablesingle readingreport only (ug/L) (alert, not enforceable)all yearSEC
Fluoride, total [as F]single readingreport only (mg/L) (alert, not enforceable)all yearSEC
Arsenic, total [as As]single readingreport only (ug/L) (alert, not enforceable)all yearSEC
Aluminum, total [as Al]single readingreport only (mg/L) (alert, not enforceable)all yearSEC
PCB-1016single readingreport only (ug/L) (alert, not enforceable)all yearSEC
Toxaphenesingle readingreport only (ng/L) (alert, not enforceable)all yearSEC
PCB-1221single readingreport only (ug/L) (alert, not enforceable)all yearSEC
PCB-1232single readingreport only (ug/L) (alert, not enforceable)all yearSEC
PCB-1242single readingreport only (ug/L) (alert, not enforceable)all yearSEC
PCB-1248single readingreport only (ug/L) (alert, not enforceable)all yearSEC
PCB-1254single readingreport only (ug/L) (alert, not enforceable)all yearSEC
PCB-1260single readingreport only (ug/L) (alert, not enforceable)all yearSEC
Flowmonthly averagereport only (MGD) (alert, not enforceable)all yearSEC
Fluoride, total [as F]single readingreport only (mg/L) (alert, not enforceable)all yearSECI
Temperature, water deg. centigradesingle readingreport only (deg C) (alert, not enforceable)all yearSP10
pHsingle readingreport only (SU)all yearSP10
Oil and grease, hexane extr methodmonthly average≤ 5 mg/Lall yearSP10
Nitrogen, ammonia total [as N]single readingreport only (mg/L) (alert, not enforceable)all yearSP10
pH, maximuminstantaneous maximumreport only (SU) (alert, not enforceable)all yearSP10
pH, minimuminstantaneous minimumreport only (SU) (alert, not enforceable)all yearSP10
Flowsingle readingreport only (MGD) (alert, not enforceable)all yearSP10
Conductivitysingle readingreport only (uS/cm) (alert, not enforceable)all yearTLL
Arsenic, total [as As]single readingreport only (ug/L) (alert, not enforceable)all yearTLL
Discharge event observation [Visual Monitoring]single readingreport only (N=0;Y=1) (alert, not enforceable)all yearTLL

How strict are these limits?

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

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