Lanxess Corporation - Central Plant

NPDES permit AR0001171 · Major NON-POTW · effective, expires 2029-06-30 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 98 forms filed late

Last period with anything received: 2026-07-31. Most often over: pH (2).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among AR permits in EPA's filings — check your permit).

Limits in force (240)

OutfallParameterStatisticLimitMonths
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Oil & GreaseMO AVG <= 10 mg/L all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 35 mg/L all year
004Chloride [as Cl]MO AVG report only all year
004Chloride [as Cl]DAILY MX report only all year
004Sulfate, total [as SO4]MO AVG report only all year
004Sulfate, total [as SO4]DAILY MX report only all year
004Zinc, total recoverableMO AVG report only all year
004Zinc, total recoverableDAILY MX report only all year
004Lead, total recoverableMO AVG report only all year
004Lead, total recoverableDAILY MX report only all year
004Total purgeable halocarbonsDAILY MX <= .1 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Solids, total dissolvedMO AVG report only all year
004Solids, total dissolvedDAILY MX report only all year
004Mercury, total recoverableMO AVG report only all year
004Mercury, total recoverableDAILY MX report only all year
004Cyanide, total recoverableMO AVG report only all year
004Cyanide, total recoverableDAILY MX report only all year
005Temperature, water deg. fahrenheitINST MAX <= 86 deg F all year
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Oil & GreaseMO AVG <= 10 mg/L all year
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Carbon, tot organic [TOC]DAILY MX <= 35 mg/L all year
005Chloride [as Cl]MO AVG report only all year
005Chloride [as Cl]DAILY MX report only all year
005Sulfate, total [as SO4]MO AVG report only all year
005Sulfate, total [as SO4]DAILY MX report only all year
005Zinc, total recoverableMO AVG report only all year
005Zinc, total recoverableDAILY MX report only all year
005Lead, total recoverableMO AVG report only all year
005Lead, total recoverableDAILY MX report only all year
005Copper, total recoverableMO AVG report only all year
005Copper, total recoverableDAILY MX report only all year
005Total purgeable halocarbonsDAILY MX <= .1 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Solids, total dissolvedMO AVG report only all year
005Solids, total dissolvedDAILY MX report only all year
005Mercury, total recoverableMO AV MN report only all year
005Mercury, total recoverableDAILY MX report only all year
006Oxygen, dissolved [DO]INST MIN >= 4 mg/L May, Jun, Jul, Aug, Sep, Oct
006Oxygen, dissolved [DO]INST MIN >= 6 mg/L Jan, Feb, Mar, Apr, Nov, Dec
006pHMINIMUM >= 6 SU all year
006pHMINIMUM >= 6 SU all year
006pHMAXIMUM <= 9 SU all year
006pHMAXIMUM <= 9 SU all year
006Solids, total suspendedMO AVG <= 30 mg/L all year
006Solids, total suspendedDAILY MX <= 45 mg/L all year
006Oil & GreaseMO AVG <= 10 mg/L all year
006Oil & GreaseMO AVG <= 10 mg/L all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Nitrogen, ammonia total [as N]MO AVG <= .5 mg/L all year
006Nitrogen, ammonia total [as N]DAILY MX <= .75 mg/L all year
006Phosphorus, total [as P]MO AVG report only all year
006Phosphorus, total [as P]DAILY MX report only all year
006Carbon, tot organic [TOC]DAILY MX <= 35 mg/L all year
006Carbon, tot organic [TOC]DAILY MX <= 35 mg/L all year
006Chloride [as Cl]MO AVG report only all year
006Chloride [as Cl]MO AVG report only all year
006Chloride [as Cl]DAILY MX report only all year
006Chloride [as Cl]DAILY MX report only all year
006Sulfate, total [as SO4]MO AVG report only all year
006Sulfate, total [as SO4]MO AVG report only all year
006Sulfate, total [as SO4]DAILY MX report only all year
006Sulfate, total [as SO4]DAILY MX report only all year
006Selenium, total recoverableMO AVG <= 5.58 ug/L all year
006Selenium, total recoverableDAILY MX <= 11.2 ug/L all year
006Chromium, hexavalent [as Cr]MO AVG <= 11.81 ug/L all year
006Chromium, hexavalent [as Cr]DAILY MX <= 23.7 ug/L all year
006Nickel, total recoverableMO AVG <= 131.56 ug/L all year
006Nickel, total recoverableDAILY MX <= 263.96 ug/L all year
006Silver total recoverableMO AVG <= 1.33 ug/L all year
006Silver total recoverableDAILY MX <= 2.68 ug/L all year
006Zinc, total recoverableMO AVG report only all year
006Zinc, total recoverableMO AVG <= 115.62 ug/L all year
006Zinc, total recoverableDAILY MX report only all year
006Zinc, total recoverableDAILY MX <= 231.99 ug/L all year
006Cadmium, total recoverableMO AVG <= 2.03 ug/L all year
006Cadmium, total recoverableDAILY MX <= 4.08 ug/L all year
006Lead, total recoverableMO AVG report only all year
006Lead, total recoverableMO AVG <= 3.8 ug/L all year
006Lead, total recoverableDAILY MX report only all year
006Lead, total recoverableDAILY MX <= 7.62 ug/L all year
006Chromium, total recoverableMO AVG <= 364.32 ug/L all year
006Chromium, total recoverableDAILY MX <= 730.99 ug/L all year
006Copper, total recoverableMO AVG report only all year
006Copper, total recoverableMO AVG <= 12.2 ug/L all year
006Copper, total recoverableDAILY MX report only all year
006Copper, total recoverableDAILY MX <= 24.48 ug/L all year
006Total purgeable halocarbonsDAILY MX <= .1 mg/L all year
006Total purgeable halocarbonsDAILY MX <= .1 mg/L all year
006Flow, in conduit or thru treatment plantMO AVG report only 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
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Solids, total dissolvedMO AVG report only all year
006Solids, total dissolvedMO AVG report only all year
006Solids, total dissolvedDAILY MX report only all year
006Solids, total dissolvedDAILY MX report only all year
006Mercury, total recoverableMO AVG report only all year
006Mercury, total recoverableMO AVG <= .0134 ug/L all year
006Mercury, total recoverableDAILY MX report only all year
006Mercury, total recoverableDAILY MX <= .0269 ug/L all year
006Coliform, fecal general30DA GEO <= 1000 #/100mL all year
006Coliform, fecal general7 DA GEO <= 2000 #/100mL all year
006Cyanide, total recoverableMO AVG <= 5.8 ug/L all year
006Cyanide, total recoverableDAILY MX <= 11.64 ug/L all year
006BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L all year
006BOD, carbonaceous [5 day, 20 C]DAILY MX <= 23 mg/L all year
010Oxygen, dissolved [DO]INST MIN report only all year
010pHMINIMUM >= 6 SU all year
010pHMAXIMUM <= 9 SU all year
010Solids, total suspendedMO AVG <= 750.6 lb/d all year
010Solids, total suspendedDAILY MX <= 1125.9 lb/d all year
010Oil & GreaseMO AVG <= 250.2 lb/d all year
010Oil & GreaseDAILY MX <= 375.3 lb/d all year
010Nitrogen, ammonia total [as N]MO AVG <= 12.5 lb/d all year
010Nitrogen, ammonia total [as N]DAILY MX <= 18.7 lb/d all year
010Phosphorus, total [as P]MO AVG report only all year
010Phosphorus, total [as P]DAILY MX report only all year
010Chloride [as Cl]MO AVG report only all year
010Chloride [as Cl]DAILY MX report only all year
010Sulfate, total [as SO4]MO AVG report only all year
010Sulfate, total [as SO4]DAILY MX report only all year
010Selenium, total recoverableMO AVG <= .99 lb/d all year
010Selenium, total recoverableDAILY MX <= 1.98 lb/d all year
010Nickel, total recoverableMO AVG <= 21.35 lb/d all year
010Nickel, total recoverableDAILY MX <= 42.83 lb/d all year
010Silver total recoverableMO AVG <= .12 lb/d all year
010Silver total recoverableDAILY MX <= .23 lb/d all year
010Zinc, total recoverableMO AVG <= 11.03 lb/d all year
010Zinc, total recoverableDAILY MX <= 22.13 lb/d all year
010Cadmium, total recoverableMO AVG <= .33 lb/d all year
010Cadmium, total recoverableDAILY MX <= .67 lb/d all year
010Lead, total recoverableMO AVG <= .6 lb/d all year
010Lead, total recoverableDAILY MX <= 1.2 lb/d all year
010Copper, total recoverableMO AVG <= 1.23 lb/d all year
010Copper, total recoverableDAILY MX <= 2.48 lb/d all year
010Chromium, hexavalent dissolved [as Cr]MO AVG <= 1.44 lb/d all year
010Chromium, hexavalent dissolved [as Cr]DAILY MX <= 2.9 lb/d all year
010Flow, in conduit or thru treatment plantMO AVG report only all year
010Flow, in conduit or thru treatment plantDAILY MX <= 3 MGD all year
010Chromium IIIMO AVG <= 59.27 lb/d all year
010Chromium IIIDAILY MX <= 118.93 lb/d all year
010Solids, total dissolvedMO AVG report only all year
010Solids, total dissolvedDAILY MX report only all year
010Mercury, total recoverableDAILY MX < .19 ug/L all year
010Coliform, fecal general30DA GEO report only all year
010Coliform, fecal general7 DA GEO report only all year
010Cyanide, total recoverableMO AVG <= 1.03 lb/d all year
010Cyanide, total recoverableDAILY MX <= 2.06 lb/d all year
010BOD, carbonaceous [5 day, 20 C]MO AVG <= 383.33 lb/d all year
010BOD, carbonaceous [5 day, 20 C]DAILY MX <= 575 lb/d all year
06AFlow, in conduit or thru treatment plantDAILY MX <= 3 MGD all year
TX10Whole effluent toxicity - retest #17 DA MIN report only all year
TX10Whole effluent toxicity - retest #27 DA MIN report only all year
TX10WET, sublethal retest #17 DA MIN report only all year
TX10WET, sublethal retest #27 DA MIN report only all year
TX10Whole Effluent Toxicity - Retest #37 DA MIN report only all year
TX10Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX10Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX10Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX10Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX10Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX10NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX10NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX10NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX10NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX10Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX10Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX4Whole effluent toxicity - retest #17 DA MIN report only all year
TX4Whole effluent toxicity - retest #27 DA MIN report only all year
TX4WET, sublethal retest #17 DA MIN report only all year
TX4WET, sublethal retest #27 DA MIN report only all year
TX4Whole Effluent Toxicity - Retest #37 DA MIN report only all year
TX4Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX4Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX4Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX4Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX4Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX4NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX4NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX4NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX4NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX4Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX4Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX5Whole effluent toxicity - retest #17 DA MIN report only all year
TX5Whole effluent toxicity - retest #27 DA MIN report only all year
TX5WET, sublethal retest #17 DA MIN report only all year
TX5WET, sublethal retest #27 DA MIN report only all year
TX5Whole Effluent Toxicity - Retest #37 DA MIN report only all year
TX5Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX5Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX5Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX5Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX5Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX5NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX5NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX5NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX5NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX5Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX5Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX6Whole effluent toxicity - retest #17 DA MIN report only all year
TX6Whole effluent toxicity - retest #17 DA MIN report only all year
TX6Whole effluent toxicity - retest #27 DA MIN report only all year
TX6Whole effluent toxicity - retest #27 DA MIN report only all year
TX6WET, sublethal retest #17 DA MIN report only all year
TX6WET, sublethal retest #17 DA MIN report only all year
TX6WET, sublethal retest #27 DA MIN report only all year
TX6WET, sublethal retest #27 DA MIN report only all year
TX6Whole Effluent Toxicity - Retest #37 DA MIN report only all year
TX6Whole Effluent Toxicity - Retest #37 DA MIN report only all year
TX6Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX6Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX6Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX6Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX6Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX6Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX6NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX6NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX6NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX6NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX6Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX6Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX6Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year

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