Arconic US LLC

NPDES permit TN0067199 · 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

5values over a limit
0required values missing, on 0 form(s)
8of 108 forms filed late

Last period with anything received: 2026-07-31. Most often over: Polychlorinated biphenyls [PCBs] (4), Chromium, hexavalent [as Cr] (1).

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 (275)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY MX <= 40 mg/L all year
001Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= .74 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 1.3 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 1.48 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 2.6 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Cyanide, total [as CN]MO AVG report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Cyanide, free [amenable to chlorination]MO AVG <= .0048 mg/L all year
001Cyanide, free [amenable to chlorination]DAILY MX <= .021 mg/L all year
001Chromium, hexavalent [as Cr]MO AVG <= .01 mg/L all year
001Chromium, hexavalent [as Cr]DAILY MX <= .015 mg/L all year
001Chromium, trivalent [as Cr]MO AVG <= .67 mg/L all year
001Chromium, trivalent [as Cr]DAILY MX <= 5.2 mg/L all year
001Chromium, total [as Cr]MO AVG report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Zinc, total [as Zn]MO AVG <= .76 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .76 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 3.9 mg/L all year
001Polychlorinated biphenyls [PCBs]MO AVG <= .00000064 mg/L all year
001Polychlorinated biphenyls [PCBs]DAILY MX <= .00000128 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .019 mg/L all year
001Chlorine, total residualDAILY MX <= .011 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20 mg/L May, Jun, Jul, Aug, Sep, Oct
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 100 % all year
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 100 % all year
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 100 % all year
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 100 % all year
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 100 % all year
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 100 % all year
007pHMINIMUM >= 6 SU all year
007pHMAXIMUM <= 9 SU all year
007Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
007Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
007Nitrogen, ammonia total [as N]MO AVG <= .74 mg/L May, Jun, Jul, Aug, Sep, Oct
007Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
007Nitrogen, ammonia total [as N]DAILY MX <= 1.48 mg/L May, Jun, Jul, Aug, Sep, Oct
007Nitrogen, ammonia total [as N]DAILY MX <= 2.4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
007Cyanide, total [as CN]MO AVG report only all year
007Cyanide, total [as CN]DAILY MX report only all year
007Cyanide, free [amenable to chlorination]MO AVG <= .005 mg/L all year
007Cyanide, free [amenable to chlorination]DAILY MX <= .022 mg/L all year
007Polychlorinated biphenyls [PCBs]MO AVG <= .000001 mg/L all year
007Polychlorinated biphenyls [PCBs]DAILY MX <= .0000007 mg/L all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Chlorine, total residualMO AVG <= .011 mg/L all year
007Chlorine, total residualDAILY MX <= .019 mg/L all year
007IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 100 % all year
007IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 100 % all year
007IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 100 % all year
007IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 100 % all year
007IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 100 % all year
007IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 100 % all year
01ApHMINIMUM >= 6 SU all year
01ApHMINIMUM >= 6 SU all year
01ApHMINIMUM >= 6 SU all year
01ApHMINIMUM >= 6 SU all year
01ApHMINIMUM >= 6 SU all year
01ApHMINIMUM >= 6 SU all year
01ApHMAXIMUM <= 10 SU all year
01ApHMAXIMUM <= 10 SU all year
01ApHMAXIMUM <= 10 SU all year
01ApHMAXIMUM <= 10 SU all year
01ApHMAXIMUM <= 10 SU all year
01ApHMAXIMUM <= 10 SU all year
01ASolids, total suspendedMO AVG <= 17.1 lb/d all year
01ASolids, total suspendedMO AVG <= 11.9 lb/d all year
01ASolids, total suspendedMO AVG <= 32.7 lb/d all year
01ASolids, total suspendedMO AVG <= 22.3 lb/d all year
01ASolids, total suspendedMO AVG <= 27.5 lb/d all year
01ASolids, total suspendedMO AVG <= 37.8 lb/d all year
01ASolids, total suspendedDAILY MX <= 36 lb/d all year
01ASolids, total suspendedDAILY MX <= 25.1 lb/d all year
01ASolids, total suspendedDAILY MX <= 68.7 lb/d all year
01ASolids, total suspendedDAILY MX <= 46.9 lb/d all year
01ASolids, total suspendedDAILY MX <= 57.8 lb/d all year
01ASolids, total suspendedDAILY MX <= 79.6 lb/d all year
01AOil and grease, hexane extr methodMO AVG <= 10.5 lb/d all year
01AOil and grease, hexane extr methodMO AVG <= 7.3 lb/d all year
01AOil and grease, hexane extr methodMO AVG <= 20.1 lb/d all year
01AOil and grease, hexane extr methodMO AVG <= 13.7 lb/d all year
01AOil and grease, hexane extr methodMO AVG <= 16.9 lb/d all year
01AOil and grease, hexane extr methodMO AVG <= 23.3 lb/d all year
01AOil and grease, hexane extr methodDAILY MX <= 17.5 lb/d all year
01AOil and grease, hexane extr methodDAILY MX <= 12.2 lb/d all year
01AOil and grease, hexane extr methodDAILY MX <= 33.5 lb/d all year
01AOil and grease, hexane extr methodDAILY MX <= 22.9 lb/d all year
01AOil and grease, hexane extr methodDAILY MX <= 28.2 lb/d all year
01AOil and grease, hexane extr methodDAILY MX <= 38.8 lb/d all year
01ACyanide, total [as CN]MO AVG <= .11 lb/d all year
01ACyanide, total [as CN]MO AVG <= .07 lb/d all year
01ACyanide, total [as CN]MO AVG <= .2 lb/d all year
01ACyanide, total [as CN]MO AVG <= .14 lb/d all year
01ACyanide, total [as CN]MO AVG <= .17 lb/d all year
01ACyanide, total [as CN]MO AVG <= .23 lb/d all year
01ACyanide, total [as CN]DAILY MX <= .26 lb/d all year
01ACyanide, total [as CN]DAILY MX <= .18 lb/d all year
01ACyanide, total [as CN]DAILY MX <= .49 lb/d all year
01ACyanide, total [as CN]DAILY MX <= .34 lb/d all year
01ACyanide, total [as CN]DAILY MX <= .41 lb/d all year
01ACyanide, total [as CN]DAILY MX <= .57 lb/d all year
01AChromium, total [as Cr]MO AVG <= .16 lb/d all year
01AChromium, total [as Cr]MO AVG <= .11 lb/d all year
01AChromium, total [as Cr]MO AVG <= .3 lb/d all year
01AChromium, total [as Cr]MO AVG <= .21 lb/d all year
01AChromium, total [as Cr]MO AVG <= .25 lb/d all year
01AChromium, total [as Cr]MO AVG <= .35 lb/d all year
01AChromium, total [as Cr]DAILY MX <= .39 lb/d all year
01AChromium, total [as Cr]DAILY MX <= .27 lb/d all year
01AChromium, total [as Cr]DAILY MX <= .74 lb/d all year
01AChromium, total [as Cr]DAILY MX <= .51 lb/d all year
01AChromium, total [as Cr]DAILY MX <= .63 lb/d all year
01AChromium, total [as Cr]DAILY MX <= .86 lb/d all year
01AZinc, total [as Zn]MO AVG <= .53 lb/d all year
01AZinc, total [as Zn]MO AVG <= .37 lb/d all year
01AZinc, total [as Zn]MO AVG <= 1.02 lb/d all year
01AZinc, total [as Zn]MO AVG <= .7 lb/d all year
01AZinc, total [as Zn]MO AVG <= .86 lb/d all year
01AZinc, total [as Zn]MO AVG <= 1.18 lb/d all year
01AZinc, total [as Zn]DAILY MX <= 1.28 lb/d all year
01AZinc, total [as Zn]DAILY MX <= .89 lb/d all year
01AZinc, total [as Zn]DAILY MX <= 2.44 lb/d all year
01AZinc, total [as Zn]DAILY MX <= 1.67 lb/d all year
01AZinc, total [as Zn]DAILY MX <= 2.06 lb/d all year
01AZinc, total [as Zn]DAILY MX <= 2.83 lb/d all year
01AAluminum, total [as Al]MO AVG <= 2.81 lb/d all year
01AAluminum, total [as Al]MO AVG <= 1.96 lb/d all year
01AAluminum, total [as Al]MO AVG <= 5.37 lb/d all year
01AAluminum, total [as Al]MO AVG <= 3.66 lb/d all year
01AAluminum, total [as Al]MO AVG <= 4.52 lb/d all year
01AAluminum, total [as Al]MO AVG <= 6.22 lb/d all year
01AAluminum, total [as Al]DAILY MX <= 5.64 lb/d all year
01AAluminum, total [as Al]DAILY MX <= 3.93 lb/d all year
01AAluminum, total [as Al]DAILY MX <= 10.77 lb/d all year
01AAluminum, total [as Al]DAILY MX <= 7.35 lb/d all year
01AAluminum, total [as Al]DAILY MX <= 9.06 lb/d all year
01AAluminum, total [as Al]DAILY MX <= 12.48 lb/d all year
01AFlow, in conduit or thru treatment plantMO AVG report only all year
01AFlow, in conduit or thru treatment plantMO AVG report only all year
01AFlow, in conduit or thru treatment plantMO AVG report only all year
01AFlow, in conduit or thru treatment plantMO AVG report only all year
01AFlow, in conduit or thru treatment plantMO AVG report only all year
01AFlow, in conduit or thru treatment plantMO AVG report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
01AFlowMO AVG report only all year
01AFlowMO AVG report only all year
01AFlowMO AVG report only all year
01AFlowMO AVG report only all year
01AFlowMO AVG report only all year
01AFlowMO AVG report only all year
01AFlowDAILY MX report only all year
01AFlowDAILY MX report only all year
01AFlowDAILY MX report only all year
01AFlowDAILY MX report only all year
01AFlowDAILY MX report only all year
01AFlowDAILY MX report only all year
01EBOD, 5-day, 20 deg. CDAILY MX report only all year
01EpHMINIMUM report only all year
01EpHMAXIMUM report only all year
01ESolids, total suspendedDAILY MX report only all year
01EOil and grease, hexane extr methodDAILY MX report only all year
01EMagnesium, total [as Mg]DAILY MX report only all year
01ECopper, total [as Cu]DAILY MX report only all year
01EIron, total [as Fe]DAILY MX report only all year
01EAluminum, total [as Al]DAILY MX report only all year
01EPolychlorinated biphenyls [PCBs]DAILY MX report only all year
01EFlow, in conduit or thru treatment plantMO AVG report only all year
01EFlow, in conduit or thru treatment plantDAILY MX report only all year
01EChemical Oxygen Demand [COD]DAILY MX report only all year
01NBOD, 5-day, 20 deg. CDAILY MX report only all year
01NpHMINIMUM report only all year
01NpHMAXIMUM report only all year
01NSolids, total suspendedDAILY MX report only all year
01NOil and grease, hexane extr methodDAILY MX report only all year
01NNitrite + Nitrate total [as N]DAILY MX report only all year
01NMagnesium, total [as Mg]DAILY MX report only all year
01NIron, total [as Fe]DAILY MX report only all year
01NAluminum, total [as Al]DAILY MX report only all year
01NPolychlorinated biphenyls [PCBs]DAILY MX report only all year
01NFlow, in conduit or thru treatment plantMO AVG report only all year
01NFlow, in conduit or thru treatment plantDAILY MX report only all year
01NChemical Oxygen Demand [COD]DAILY MX report only all year
01SBOD, 5-day, 20 deg. CDAILY MX report only all year
01SpHMINIMUM report only all year
01SpHMAXIMUM report only all year
01SSolids, total suspendedDAILY MX report only all year
01SOil and grease, hexane extr methodDAILY MX report only all year
01SMagnesium, total [as Mg]DAILY MX report only all year
01SIron, total [as Fe]DAILY MX report only all year
01SAluminum, total [as Al]DAILY MX report only all year
01SPolychlorinated biphenyls [PCBs]DAILY MX report only all year
01SFlow, in conduit or thru treatment plantMO AVG report only all year
01SFlow, in conduit or thru treatment plantDAILY MX report only all year
01SChemical Oxygen Demand [COD]DAILY MX report only all year
N01BOD, 5-day, 20 deg. CDAILY MX report only all year
N01pHMINIMUM report only all year
N01pHMAXIMUM report only all year
N01Solids, total suspendedDAILY MX report only all year
N01Oil and grease, hexane extr methodDAILY MX report only all year
N01Magnesium, total [as Mg]DAILY MX report only all year
N01Iron, total [as Fe]DAILY MX report only all year
N01Aluminum, total [as Al]DAILY MX report only all year
N01Polychlorinated biphenyls [PCBs]DAILY MX report only all year
N01Flow, in conduit or thru treatment plantMO AVG report only all year
N01Flow, in conduit or thru treatment plantDAILY MX report only all year
N01Chemical Oxygen Demand [COD]DAILY MX report only all year
N05BOD, 5-day, 20 deg. CDAILY MX report only all year
N05pHMINIMUM report only all year
N05pHMAXIMUM report only all year
N05Solids, total suspendedDAILY MX report only all year
N05Oil and grease, hexane extr methodDAILY MX report only all year
N05Nitrite + Nitrate total [as N]DAILY MX report only all year
N05Magnesium, total [as Mg]DAILY MX report only all year
N05Iron, total [as Fe]DAILY MX report only all year
N05Aluminum, total [as Al]DAILY MX report only all year
N05Polychlorinated biphenyls [PCBs]DAILY MX report only all year
N05Flow, in conduit or thru treatment plantMO AVG report only all year
N05Flow, in conduit or thru treatment plantDAILY MX report only all year
N05Chemical Oxygen Demand [COD]DAILY MX report only all year
N06BOD, 5-day, 20 deg. CDAILY MX report only all year
N06pHMINIMUM report only all year
N06pHMAXIMUM report only all year
N06Solids, total suspendedDAILY MX report only all year
N06Oil and grease, hexane extr methodDAILY MX report only all year
N06Nitrite + Nitrate total [as N]DAILY MX report only all year
N06Magnesium, total [as Mg]DAILY MX report only all year
N06Iron, total [as Fe]DAILY MX report only all year
N06Aluminum, total [as Al]DAILY MX report only all year
N06Polychlorinated biphenyls [PCBs]DAILY MX report only all year
N06Flow, in conduit or thru treatment plantMO AVG report only all year
N06Flow, in conduit or thru treatment plantDAILY MX report only all year
N06Chemical Oxygen Demand [COD]DAILY MX report only all year
N10BOD, 5-day, 20 deg. CDAILY MX report only all year
N10pHMINIMUM report only all year
N10pHMAXIMUM report only all year
N10Solids, total suspendedDAILY MX report only all year
N10Oil and grease, hexane extr methodDAILY MX report only all year
N10Magnesium, total [as Mg]DAILY MX report only all year
N10Iron, total [as Fe]DAILY MX report only all year
N10Zinc, total [as Zn]DAILY MX report only all year
N10Aluminum, total [as Al]DAILY MX report only all year
N10Polychlorinated biphenyls [PCBs]DAILY MX report only all year
N10Flow, in conduit or thru treatment plantMO AVG report only all year
N10Flow, in conduit or thru treatment plantDAILY MX report only all year
N10Chemical Oxygen Demand [COD]DAILY MX report only all year
SW1pHMAXIMUM report only all year
SW1Solids, total suspendedDAILY MX report only all year
SW1Oil and grease, hexane extr methodDAILY MX report only all year
SW1Nitrogen, ammonia total [as N]DAILY MX report only all year
SW1Cyanide, total [as CN]DAILY MX report only all year
SW1Magnesium, total [as Mg]DAILY MX report only all year
SW1Chromium, total [as Cr]DAILY MX report only all year
SW1Copper, total [as Cu]DAILY MX report only all year
SW1Zinc, total [as Zn]DAILY MX report only all year
SW1Aluminum, total [as Al]DAILY MX report only all year
SW1Polychlorinated biphenyls [PCBs]DAILY MX report only all year
SW1Flow, in conduit or thru treatment plantMO AVG report only all year
SW1Flow, in conduit or thru treatment plantDAILY MX report only all year
SW1Chlorine, total residualDAILY MX report only all year
SW1BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year

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