Arconic US LLC

NPDES permit TN0065081 · Major NON-POTW · effective, expires 2027-12-31 · 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

0values over a limit
0required values missing, on 0 form(s)
3of 43 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (95)

OutfallParameterStatisticLimitMonths
006pHMINIMUM >= 6 SU all year
006pHMAXIMUM <= 9 SU all year
006Solids, total suspendedDAILY MX <= 40 mg/L all year
006Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
006Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
006Fluoride, dissolved [as F]DAILY MX report only all year
006Aluminum, total [as Al]DAILY MX <= 76.6 mg/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Chlorine, total residualMO AVG <= .19 mg/L all year
006Chlorine, total residualDAILY MX <= .33 mg/L all year
006IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM > 5.8 % all year
006IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM > 5.8 % all year
06ApHMINIMUM >= 6 SU all year
06ApHMAXIMUM <= 9 SU all year
06ASolids, total suspendedMO AVG <= 4125 lb/d all year
06ANitrogen, ammonia total [as N]MO AVG <= 27.5 lb/d all year
06ANitrogen, ammonia total [as N]DAILY MX <= 487.3 lb/d all year
06AFluoride, total [as F]MO AVG <= 1100 lb/d all year
06ACopper, total [as Cu]MO AVG <= 8.25 lb/d all year
06ALead, total [as Pb]MO AVG <= .476 lb/d all year
06ALead, total [as Pb]DAILY MX <= 1.02 lb/d all year
06AZinc, total [as Zn]MO AVG <= 1.54 lb/d all year
06AZinc, total [as Zn]DAILY MX <= 3.73 lb/d all year
06AAluminum, total [as Al]MO AVG <= 9.91 lb/d all year
06AAluminum, total [as Al]DAILY MX <= 22.3 lb/d all year
06AFlow, in conduit or thru treatment plantMO AVG report only all year
06AFlow, in conduit or thru treatment plantDAILY MX report only all year
06AFlow, in conduit or thru treatment plantMO AVG report only all year
06AFlow, in conduit or thru treatment plantDAILY MX report only all year
06AChemical Oxygen Demand [COD]MO AVG <= 2750 lb/d all year
06EpHMINIMUM >= 6 SU all year
06EpHMAXIMUM <= 9 SU all year
06ESolids, total suspendedMO AVG <= 5625 lb/d all year
06ENitrogen, ammonia total [as N]MO AVG <= 37.5 lb/d all year
06ENitrogen, ammonia total [as N]DAILY MX <= 664.5 lb/d all year
06EFluoride, total [as F]DAILY MX <= 327 lb/d all year
06ECopper, total [as Cu]MO AVG <= 11.25 lb/d all year
06ELead, total [as Pb]MO AVG <= .649 lb/d all year
06ELead, total [as Pb]DAILY MX <= 1.395 lb/d all year
06EZinc, total [as Zn]MO AVG <= 2.09 lb/d all year
06EZinc, total [as Zn]DAILY MX <= 5.09 lb/d all year
06EAluminum, total [as Al]MO AVG <= 13.5 lb/d all year
06EAluminum, total [as Al]DAILY MX <= 30.5 lb/d all year
06EFlow, in conduit or thru treatment plantMO AVG report only all year
06EFlow, in conduit or thru treatment plantDAILY MX report only all year
06EFlow, in conduit or thru treatment plantMO AVG report only all year
06EFlow, in conduit or thru treatment plantDAILY MX report only all year
06EChemical Oxygen Demand [COD]MO AVG <= 3750 lb/d all year
S03pHMAXIMUM report only all year
S03Solids, total suspendedDAILY MX report only all year
S03Oil and grease, hexane extr methodDAILY MX report only all year
S03Nitrite + Nitrate total [as N]DAILY MX report only all year
S03Cyanide, total [as CN]DAILY MX report only all year
S03Magnesium, total [as Mg]DAILY MX report only all year
S03Fluoride, dissolved [as F]DAILY MX report only all year
S03Iron, total [as Fe]DAILY MX report only all year
S03Aluminum, total [as Al]DAILY MX report only all year
S03Flow, in conduit or thru treatment plantDAILY MX report only all year
S03LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM report only all year
S03LC50 Static 48Hr Acute Pimephales promelasMINIMUM report only all year
SW4pHDAILY MX report only all year
SW4Solids, total suspendedDAILY MX report only all year
SW4Oil and grease, hexane extr methodDAILY MX report only all year
SW4Nitrogen, ammonia total [as N]DAILY MX report only all year
SW4Nitrite + Nitrate total [as N]DAILY MX report only all year
SW4Cyanide, total [as CN]DAILY MX report only all year
SW4Magnesium, total [as Mg]DAILY MX report only all year
SW4Fluoride, dissolved [as F]DAILY MX report only all year
SW4Chromium, total [as Cr]DAILY MX report only all year
SW4Copper, total [as Cu]DAILY MX report only all year
SW4Zinc, total [as Zn]DAILY MX report only all year
SW4Aluminum, total [as Al]DAILY MX report only all year
SW4Flow, in conduit or thru treatment plantDAILY MX report only all year
SW4Chlorine, total residualDAILY MX report only all year
SW4BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
SW4LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM report only all year
SW4LC50 Static 48Hr Acute Pimephales promelasMINIMUM report only all year
SW6pHDAILY MX report only all year
SW6Solids, total suspendedDAILY MX report only all year
SW6Oil and grease, hexane extr methodDAILY MX report only all year
SW6Nitrogen, ammonia total [as N]DAILY MX report only all year
SW6Nitrite + Nitrate total [as N]DAILY MX report only all year
SW6Cyanide, total [as CN]DAILY MX report only all year
SW6Magnesium, total [as Mg]DAILY MX report only all year
SW6Fluoride, dissolved [as F]DAILY MX report only all year
SW6Chromium, total [as Cr]DAILY MX report only all year
SW6Copper, total [as Cu]DAILY MX report only all year
SW6Zinc, total [as Zn]DAILY MX report only all year
SW6Aluminum, total [as Al]DAILY MX report only all year
SW6Flow, in conduit or thru treatment plantDAILY MX report only all year
SW6Chlorine, total residualDAILY MX report only all year
SW6BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
SW6LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM report only all year
SW6LC50 Static 48Hr Acute Pimephales promelasMINIMUM report only 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