Entergy Louisiana, LLC- Roy S. Nelson Plant (Coal Unit 6)

NPDES permit LA0059030 · Major NON-POTW · effective, expires 2028-04-30 · 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

1values over a limit
0required values missing, on 0 form(s)
1of 58 forms filed late

Last period with anything received: 2026-07-31. Most often over: Flow, in conduit or thru treatment plant (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 (76)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 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
001Coliform, fecal generalMO AVG <= 200 #/100mL all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL all year
002Temperature, water deg. fahrenheitINST MAX <= 97 deg F all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Chromium, total [as Cr]MO AVG <= .2 mg/L all year
002Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
002Zinc, total [as Zn]MO AVG <= 330 ug/L all year
002Zinc, total [as Zn]DAILY MX <= 783 ug/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, free availableMO AVG <= .2 mg/L all year
002Chlorine, free availableDAILY MX <= .5 mg/L all year
002Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
002Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
002Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
002Pass/Fail Static Renewal 7Day Chronic Pimephales promelasMO AV MN report only all year
002Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
002Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
002Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
002Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
002NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
002NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
002NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
002NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
002NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
002NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
002NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
002NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
002Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiaMAXIMUM report only all year
002Coef Of Var Static Renewal 7Day Chronic Pimephales promelasMAXIMUM report only all year
003Temperature, water deg. fahrenheitDAILY MX <= 97 deg F all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Solids, total suspendedMO AVG <= 30 mg/L all year
003Solids, total suspendedDAILY MX <= 50 mg/L all year
003Oil & GreaseMO AVG <= 15 mg/L all year
003Oil & GreaseDAILY MX <= 20 mg/L all year
003Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Flow, in conduit or thru treatment plant30DA AVG <= .071 MGD all year
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 50 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
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Solids, total suspendedMO AVG <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 50 mg/L all year
005Oil & GreaseMO AVG <= 15 mg/L all year
005Oil & GreaseDAILY MX <= 20 mg/L all year
005Carbon, tot organic [TOC]DAILY MX <= 50 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
303pHINST MIN >= 6 SU all year
303pHINST MAX <= 9 SU all year
303Solids, total suspendedDAILY MX <= 90 mg/L all year
303Solids, total suspendedDAILY MX <= 90 mg/L all year
303Oil & GreaseDAILY MX <= 15 mg/L all year
303Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
303Lead, total [as Pb]DAILY MX <= 50 ug/L all year
303BenzeneDAILY MX <= 50 ug/L all year
303BTEXDAILY MX <= 250 ug/L all year
303Flow, in conduit or thru treatment plantMO AVG report only all year
303Flow, in conduit or thru treatment plantDAILY MX 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