Entergy Louisiana, LLC- Roy S. Nelson Generating Plant

NPDES permit LA0005843 · Major NON-POTW · effective, expires 2027-03-31 · 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)
0of 125 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among LA permits in EPA's filings — check your permit).

Limits in force (126)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG <= 90 deg F Jan, Feb, Mar, Apr, May, Nov, Dec
001Temperature, water deg. fahrenheitMO AVG <= 90 deg F Jun, Jul, Aug, Sep, Oct
001Temperature, water deg. fahrenheitDAILY MX <= 90 deg F Jan, Feb, Mar, Apr, May, Nov, Dec
001Temperature, water deg. fahrenheitDAILY MX <= 95 deg F Jun, Jul, Aug, Sep, Oct
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 <= 100 mg/L all year
001Oil & GreaseMO AVG <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 20 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
001Chromium, total [as Cr]MO AVG <= .2 mg/L all year
001Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
001Zinc, total [as Zn]MO AVG <= 359 ug/L all year
001Zinc, total [as Zn]DAILY MX <= 852 ug/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, free availableMO AVG <= .2 mg/L all year
001Chlorine, free availableDAILY MX <= .5 mg/L all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelasMO AV MN report only all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiaMAXIMUM report only all year
001Coef Of Var Static Renewal 7Day Chronic Pimephales promelasMAXIMUM report only all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
002Phenolics, total recoverableMO AVG report only all year
002Phenolics, total recoverableDAILY MX report only 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
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 <= 100 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
003Phenolics, total recoverableMO AVG report only all year
003Phenolics, total recoverableDAILY MX report only 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
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Solids, total suspendedMO AVG <= 30 mg/L all year
004Solids, total suspendedDAILY MX <= 100 mg/L 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
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
005Phenolics, total recoverableMO AVG report only all year
005Phenolics, total recoverableDAILY MX report only 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
006pHINST MIN >= 6 SU all year
006pHINST MAX <= 9 SU all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
006Phenolics, total recoverableMO AVG report only all year
006Phenolics, total recoverableDAILY MX 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
007pHINST MIN >= 6 SU all year
007pHINST MAX <= 9 SU all year
007Oil & GreaseDAILY MX <= 15 mg/L all year
007Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
007Phenolics, total recoverableMO AVG report only all year
007Phenolics, total recoverableDAILY MX report only 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
101Copper, total [as Cu]MO AVG <= 1 mg/L all year
101Copper, total [as Cu]DAILY MX <= 1 mg/L all year
101Iron, total [as Fe]MO AVG <= 1 mg/L all year
101Iron, total [as Fe]DAILY MX <= 1 mg/L all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
105pHINST MIN >= 6 SU all year
105pHINST MAX <= 9 SU all year
105Solids, total suspendedMO AVG <= 30 mg/L all year
105Solids, total suspendedDAILY MX <= 100 mg/L all year
105Oil & GreaseMO AVG <= 15 mg/L all year
105Oil & GreaseDAILY MX <= 20 mg/L all year
105Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
105Phenolics, total recoverableMO AVG report only all year
105Phenolics, total recoverableDAILY MX report only all year
105Flow, in conduit or thru treatment plantMO AVG report only all year
105Flow, in conduit or thru treatment plantDAILY MX report only all year
107pHINST MIN >= 6 SU all year
107pHINST MAX <= 9 SU all year
107Solids, total suspendedDAILY MX <= 90 mg/L all year
107Solids, total suspendedDAILY MX <= 90 mg/L all year
107Oil & GreaseDAILY MX <= 15 mg/L all year
107Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
107Lead, total [as Pb]DAILY MX <= 50 ug/L all year
107BenzeneDAILY MX <= 50 ug/L all year
107BTEXDAILY MX <= 250 ug/L all year
107Flow, in conduit or thru treatment plantMO AVG report only all year
107Flow, in conduit or thru treatment plantDAILY MX report only all year
201BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
201BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
201Solids, total suspendedMO AVG <= 30 mg/L all year
201Solids, total suspendedDAILY MX <= 45 mg/L all year
201Flow, in conduit or thru treatment plantMO AVG report only all year
201Flow, in conduit or thru treatment plantDAILY MX report only all year
201Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
201Coliform, fecal generalDAILY MX <= 400 #/100mL all year
IT01Flow, in conduit or thru treatment plantMO AVG report only all year
IT01Flow, 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