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Arconic US LLC

Aluminum Sheet, Plate, And Foil, major discharger, Bettendorf, Iowa. NPDES permit IA0003395, in force until Dec 31, 2030. Last 12 months: over a limit 5 times (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 007 form A monthly (11 values), outfall 009 form A monthly (30 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
29 values over a limit, 4 required values missing, 0 of 96 reports late

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

Period endingOutfallParameterReportedLimitOver by
October 2025SUMAluminum, total [as Al], 30-day average26.06653≤ 23.2 lb/d12%
October 2025SUMAluminum, total [as Al], daily maximum151.375≤ 49.3 lb/d207%
October 2025SUMSolids, total suspended, daily maximum668.9738≤ 484.6 lb/d38%
December 2025002pH, daily minimum6.88≥ 7 SU—
December 2025SUMSolids, total suspended, daily maximum687.9733≤ 484.6 lb/d42%

Limits in force (41)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year007
pHdaily maximum≤ 9 SUall year007
Tetrachloroethenedaily maximum≤ .033 mg/Lall year007
Tetrachloroethene30-day averagereport only (mg/L)all year007
Tetrachloroethenedaily maximumreport only (mg/L)all year007
Trichloroethenedaily maximum≤ .01 mg/Lall year007
Trichloroethene30-day averagereport only (mg/L)all year007
Trichloroethenedaily maximumreport only (mg/L)all year007
cis-1,2-Dichloroethenedaily maximum≤ .078 mg/Lall year007
cis-1,2-Dichloroethene30-day averagereport only (mg/L)all year007
cis-1,2-Dichloroethenedaily maximumreport only (mg/L)all year007
pHdaily minimum≥ 7 SUall year009
pHdaily maximum≤ 10 SUall year009
Solids, total suspended30-day average≤ 290.4 lb/dall year009
Solids, total suspendeddaily maximum≤ 555.9 lb/dall year009
Oil & Grease30-day average≤ 192.8 lb/dall year009
Oil & Greasedaily maximum≤ 285.5 lb/dall year009
Nitrogen, total [as N]30-day averagereport only (mg/L)all year009
Nitrogen, total [as N]daily maximumreport only (mg/L)all year009
Nitrogen, total [as N]30-day averagereport only (lb/d)all year009
Nitrogen, total [as N]daily maximumreport only (lb/d)all year009
Phosphorus, total [as P]30-day averagereport only (mg/L)all year009
Phosphorus, total [as P]daily maximumreport only (mg/L)all year009
Phosphorus, total [as P]30-day averagereport only (lb/d)all year009
Phosphorus, total [as P]daily maximumreport only (lb/d)all year009
Cyanide, total [as CN]30-day average≤ .8 lb/dall year009
Cyanide, total [as CN]daily maximum≤ 1.94 lb/dall year009
Chromium, total [as Cr]30-day average≤ 1.31 lb/dall year009
Chromium, total [as Cr]daily maximum≤ 3.19 lb/dall year009
Zinc, total [as Zn]30-day average≤ 5.01 lb/dall year009
Zinc, total [as Zn]daily maximum≤ 12.08 lb/dall year009
Aluminum, total [as Al]30-day average≤ 29 lb/dall year009
Aluminum, total [as Al]daily maximum≤ 61.8 lb/dall year009
Chlorine, total residual30-day average≤ .604 mg/Lall year009
Chlorine, total residualdaily maximum≤ .604 mg/Lall year009
Chlorine, total residual30-day average≤ 2.77 lb/dall year009
Chlorine, total residualdaily maximum≤ 2.77 lb/dall year009
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 N=0;Y=1all year009
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 N=0;Y=1all year009
Precipitation volume30-day averagereport only (in/d)all year009
Precipitation volumedaily maximumreport only (in/d)all year009

How strict are these limits?

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

Same industry: the 7 Primary Metal Industries permits in Iowa.

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