INTALCO ALUMINUM CORPORATION

NPDES permit WA0002950 · Major NON-POTW · effective, expires 2029-10-31 · 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.

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

10values over a limit
11required values missing, on 11 form(s)
0of 158 forms filed late

Last period with anything received: 2026-07-31. Most often over: Number of operating tubes (8), BOD, 5-day, 20 deg. C (1), Solids, total suspended (1).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among WA permits in EPA's filings — check your permit).

Limits in force (124)

OutfallParameterStatisticLimitMonths
0022Discharge event observation [Visual Monitoring]Single Rdg report only (alert) all year
002CArsenic, total [as As]Single Rdg report only (alert) all year
002CBeryllium, total [as Be]Single Rdg report only (alert) all year
002CCadmium, total [as Cd]Single Rdg report only (alert) all year
002CChromium, total [as Cr]Single Rdg report only (alert) all year
002CCopper, total [as Cu]Single Rdg report only (alert) all year
002CLead, total [as Pb]Single Rdg report only (alert) all year
002CThallium, total [as Tl]Single Rdg report only (alert) all year
002CNickel, total [as Ni]Single Rdg report only (alert) all year
002CSilver, total [as Ag]Single Rdg report only (alert) all year
002CZinc, total [as Zn]Single Rdg report only (alert) all year
002CAntimony, total [as Sb]Single Rdg report only (alert) all year
002CSelenium, total [as Se]Single Rdg report only (alert) all year
002CChromium, hexavalent dissolved [as Cr]Single Rdg report only (alert) all year
002CMercury, total [as Hg]Single Rdg report only (alert) all year
0051BOD, 5-day, 20 deg. CMO AVG <= 40 mg/L all year
0051BOD, 5-day, 20 deg. CWKLY AVG <= 60 mg/L all year
0051BOD, 5-day, 20 deg. CMO AVG <= 22.4 lb/d all year
0051BOD, 5-day, 20 deg. CWKLY AVG <= 32.4 lb/d all year
0051pHDAILY MN >= 6 SU all year
0051pHDAILY MX <= 9 SU all year
0051Solids, total suspendedMO AVG <= 40 mg/L all year
0051Solids, total suspendedWKLY AVG <= 60 mg/L all year
0051Solids, total suspendedMO AVG <= 22.4 lb/d all year
0051Solids, total suspendedWKLY AVG <= 32.4 lb/d all year
0051Arsenic, total [as As]Single Rdg report only (alert) all year
0051BOD, percent removal [total]MO AV MN report only (alert) all year
0051Number of operating tubesWKLY AVG <= 12 # all year
0051EnterococciSingle Rdg report only (alert) all year
0051Coliform, fecal generalMO GEOMN <= 200 MPN/100mL all year
0051Coliform, fecal generalWK GEOMN <= 400 MPN/100mL all year
0051FlowDAILY MX report only (alert) all year
0051FlowMO AVG report only (alert) all year
0051Solids, suspended percent removalMO AV MN report only (alert) all year
011TurbiditySingle Rdg report only (alert) all year
011pHSingle Rdg report only (alert) all year
011Fluoride, total [as F]Single Rdg report only (alert) all year
011Arsenic, total [as As]Single Rdg report only (alert) all year
011Beryllium, total [as Be]Single Rdg report only (alert) all year
011Cadmium, total [as Cd]Single Rdg report only (alert) all year
011Chromium, total [as Cr]Single Rdg report only (alert) all year
011Copper, total [as Cu]Single Rdg report only (alert) all year
011Copper, total [as Cu]Single Rdg report only (alert) all year
011Lead, total [as Pb]Single Rdg report only (alert) all year
011Thallium, total [as Tl]Single Rdg report only (alert) all year
011Nickel, total [as Ni]Single Rdg report only (alert) all year
011Silver, total [as Ag]Single Rdg report only (alert) all year
011Zinc, total [as Zn]Single Rdg report only (alert) all year
011Zinc, total [as Zn]Single Rdg report only (alert) all year
011Antimony, total [as Sb]Single Rdg report only (alert) all year
011Aluminum, total [as Al]Single Rdg report only (alert) all year
011Selenium, total [as Se]Single Rdg report only (alert) all year
011Chromium, hexavalent dissolved [as Cr]Single Rdg report only (alert) all year
011Mercury, total [as Hg]Single Rdg report only (alert) all year
012TurbiditySingle Rdg report only (alert) all year
012pHSingle Rdg report only (alert) all year
012Fluoride, total [as F]Single Rdg report only (alert) all year
012Arsenic, total [as As]Single Rdg report only (alert) all year
012Beryllium, total [as Be]Single Rdg report only (alert) all year
012Cadmium, total [as Cd]Single Rdg report only (alert) all year
012Chromium, total [as Cr]Single Rdg report only (alert) all year
012Copper, total [as Cu]Single Rdg report only (alert) all year
012Copper, total [as Cu]Single Rdg report only (alert) all year
012Lead, total [as Pb]Single Rdg report only (alert) all year
012Thallium, total [as Tl]Single Rdg report only (alert) all year
012Nickel, total [as Ni]Single Rdg report only (alert) all year
012Silver, total [as Ag]Single Rdg report only (alert) all year
012Zinc, total [as Zn]Single Rdg report only (alert) all year
012Zinc, total [as Zn]Single Rdg report only (alert) all year
012Antimony, total [as Sb]Single Rdg report only (alert) all year
012Aluminum, total [as Al]Single Rdg report only (alert) all year
012Selenium, total [as Se]Single Rdg report only (alert) all year
012Chromium, hexavalent dissolved [as Cr]Single Rdg report only (alert) all year
012Mercury, total [as Hg]Single Rdg report only (alert) all year
051IBOD, 5-day, 20 deg. CSingle Rdg report only (alert) all year
051ISolids, total suspendedSingle Rdg report only (alert) all year
D10Solids, total suspendedMO AVG <= 35 mg/L all year
D10Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
D10Oil and grease, hexane extr methodMO AVG <= 5 mg/L all year
D10Fluoride, total [as F]MO AVG <= 35 mg/L all year
D10Arsenic, total [as As]Single Rdg report only (alert) all year
D10Copper, total [as Cu]Single Rdg report only (alert) all year
D10Zinc, total [as Zn]Single Rdg report only (alert) all year
D10Aluminum, total [as Al]MO AVG <= 10 mg/L all year
D10Benzo[a]pyreneDAILY MX <= 7.5 ug/L all year
D10pH, maximumDAILY MX <= 9 SU (alert) all year
D10pH, minimumDAILY MN >= 6 SU (alert) all year
D10FlowMO AVG report only (alert) all year
D10Daily excursion time [min]MO TOTAL <= 446 min all year
PERSPopulation servedMO AVG report only (alert) all year
PONDSolids, total suspendedSingle Rdg report only (alert) all year
PONDFluoride, total [as F]Single Rdg report only (alert) all year
PONDAluminum, total [as Al]Single Rdg report only (alert) all year
PONDpH, maximumDAILY MX <= 9 SU (alert) all year
PONDpH, minimumDAILY MN >= 6 SU (alert) all year
PONDFlowMO AVG report only (alert) all year
PUDArsenic, total [as As]Single Rdg report only (alert) all year
PWSFlowSingle Rdg report only (alert) all year
RAINRainfallMO TOTAL report only (alert) all year
SECSolids, total suspendedSingle Rdg report only (alert) all year
SECCyanide, weak acid, dissociableSingle Rdg report only (alert) all year
SECFluoride, total [as F]Single Rdg report only (alert) all year
SECArsenic, total [as As]Single Rdg report only (alert) all year
SECAluminum, total [as Al]Single Rdg report only (alert) all year
SECPCB-1016Single Rdg report only (alert) all year
SECToxapheneSingle Rdg report only (alert) all year
SECPCB-1221Single Rdg report only (alert) all year
SECPCB-1232Single Rdg report only (alert) all year
SECPCB-1242Single Rdg report only (alert) all year
SECPCB-1248Single Rdg report only (alert) all year
SECPCB-1254Single Rdg report only (alert) all year
SECPCB-1260Single Rdg report only (alert) all year
SECFlowMO AVG report only (alert) all year
SECIFluoride, total [as F]Single Rdg report only (alert) all year
SP10Temperature, water deg. centigradeSingle Rdg report only (alert) all year
SP10pHSingle Rdg report only all year
SP10Oil and grease, hexane extr methodMO AVG <= 5 mg/L all year
SP10Nitrogen, ammonia total [as N]Single Rdg report only (alert) all year
SP10pH, maximumINST MAX report only (alert) all year
SP10pH, minimumINST MIN report only (alert) all year
SP10FlowSingle Rdg report only (alert) all year
TLLConductivitySingle Rdg report only (alert) all year
TLLArsenic, total [as As]Single Rdg report only (alert) all year
TLLDischarge event observation [Visual Monitoring]Single Rdg report only (alert) 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