LES ROKEBY GENERATING STATION

NPDES permit NE0123935 · Minor NON-POTW · effective, expires 2027-09-30 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 30 forms filed late

Last period with anything received: 2026-06-30.

Reporting

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

Limits in force (66)

OutfallParameterStatisticLimitMonths
007Temperature, water deg. fahrenheitMO AVG report only all year
007Temperature, water deg. fahrenheitDAILY MX <= 90 deg F all year
007BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
007BOD, 5-day, 20 deg. C7 DA AVG <= 45 mg/L all year
007BOD, 5-day, 20 deg. CMO AVG report only all year
007BOD, 5-day, 20 deg. CDAILY MX report only all year
007pHDAILY MN >= 6.5 SU all year
007pHDAILY MX report only all year
007Solids, total suspendedMO AVG <= 80 mg/L all year
007Solids, total suspendedDAILY MX <= 120 mg/L all year
007Solids, total suspendedMO AVG report only all year
007Solids, total suspendedDAILY MX report only all year
007Nitrogen, total [as N]MO AVG report only all year
007Nitrogen, total [as N]DAILY MX report only all year
007Nitrogen, ammonia total [as N]MO AVG <= 1.86 mg/L Jan, Feb, Nov, Dec
007Nitrogen, ammonia total [as N]MO AVG <= .53 mg/L Mar, Apr, May
007Nitrogen, ammonia total [as N]MO AVG <= .31 mg/L Jun, Jul, Aug, Sep, Oct
007Nitrogen, ammonia total [as N]DAILY MX <= 1.04 mg/L Jan, Feb, Nov, Dec
007Nitrogen, ammonia total [as N]DAILY MX <= .91 mg/L Mar, Apr, May
007Nitrogen, ammonia total [as N]DAILY MX <= .75 mg/L Jun, Jul, Aug, Sep, Oct
007Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Nov, Dec
007Nitrogen, ammonia total [as N]MO AVG report only Mar, Apr, May
007Nitrogen, ammonia total [as N]MO AVG report only Jun, Jul, Aug, Sep, Oct
007Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Nov, Dec
007Nitrogen, ammonia total [as N]DAILY MX report only Mar, Apr, May
007Nitrogen, ammonia total [as N]DAILY MX report only Jun, Jul, Aug, Sep, Oct
007Phosphorus, total [as P]MO AVG report only all year
007Phosphorus, total [as P]DAILY MX report only all year
007E. coli, MTEC-MFMO GEOMN <= 126 #/100mL Jun, Jul, Aug, Sep
007E. coli, MTEC-MFDAILY MX <= 298 #/100mL Jun, Jul, Aug, Sep
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Duration of dischargeMO AVG report only all year
007Duration of dischargeDAILY MX report only all year
008Temperature, water deg. fahrenheitMO AVG report only all year
008Temperature, water deg. fahrenheitDAILY MX report only all year
008ConductivityMO AVG report only all year
008ConductivityDAILY MX report only all year
008pHMINIMUM >= 6.5 SU all year
008pHMAXIMUM <= 9 SU all year
008Solids, total suspendedMO AVG report only all year
008Solids, total suspendedDAILY MX report only all year
008Solids, total suspendedMO AVG report only all year
008Solids, total suspendedDAILY MX report only all year
008Chloride [as Cl]MO AVG report only all year
008Chloride [as Cl]DAILY MX report only all year
008Flow, in conduit or thru treatment plantMO AVG report only all year
008Flow, in conduit or thru treatment plantDAILY MX report only all year
008Toxicity [acute], Ceriodaphnia dubiaMO AVG report only all year
008Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 tox acute all year
008Toxicity [acute], Pimephales promelas [Fathead Minnow]MO AVG report only all year
008Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 tox acute all year
010Temperature, water deg. fahrenheitMO AVG report only all year
010Temperature, water deg. fahrenheitDAILY MX report only all year
010ConductivityMO AVG report only all year
010ConductivityDAILY MX report only all year
010pHDAILY MN >= 6 SU all year
010pHDAILY MX <= 9 SU all year
010Chloride [as Cl]MO AVG report only all year
010Chloride [as Cl]DAILY MX report only all year
010Flow, in conduit or thru treatment plantMO AVG report only all year
010Flow, in conduit or thru treatment plantDAILY MX report only all year
010Toxicity [acute], Ceriodaphnia dubiaMO AVG report only all year
010Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 tox acute all year
010Toxicity [acute], Pimephales promelas [Fathead Minnow]MO AVG report only all year
010Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 tox acute 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