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Les Rokeby Generating Station

Electric Services, Lincoln, Nebraska. NPDES permit NE0123935, in force until Sep 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 007 form M quarterly (26 values), outfall 008 form M quarterly (14 values), outfall 010 form M quarterly (10 values), outfall 008 form P every 60 months, outfall 010 form P every 60 months
Renewal application due
Apr 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (66)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year007
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year007
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year007
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year007
BOD, 5-day, 20 deg. Cmonthly averagereport only (kg/d)all year007
BOD, 5-day, 20 deg. Cdaily maximumreport only (kg/d)all year007
pHdaily minimum≥ 6.5 SUall year007
pHdaily maximumreport only (SU)all year007
Solids, total suspendedmonthly average≤ 80 mg/Lall year007
Solids, total suspendeddaily maximum≤ 120 mg/Lall year007
Solids, total suspendedmonthly averagereport only (kg/d)all year007
Solids, total suspendeddaily maximumreport only (kg/d)all year007
Nitrogen, total [as N]monthly averagereport only (mg/L)all year007
Nitrogen, total [as N]daily maximumreport only (mg/L)all year007
Nitrogen, ammonia total [as N]monthly average≤ 1.86 mg/LJan, Feb, Nov, Dec007
Nitrogen, ammonia total [as N]monthly average≤ .53 mg/LMar–May007
Nitrogen, ammonia total [as N]monthly average≤ .31 mg/LJun–Oct007
Nitrogen, ammonia total [as N]daily maximum≤ 1.04 mg/LJan, Feb, Nov, Dec007
Nitrogen, ammonia total [as N]daily maximum≤ .91 mg/LMar–May007
Nitrogen, ammonia total [as N]daily maximum≤ .75 mg/LJun–Oct007
Nitrogen, ammonia total [as N]monthly averagereport only (kg/d)Jan, Feb, Nov, Dec007
Nitrogen, ammonia total [as N]monthly averagereport only (kg/d)Mar–May007
Nitrogen, ammonia total [as N]monthly averagereport only (kg/d)Jun–Oct007
Nitrogen, ammonia total [as N]daily maximumreport only (kg/d)Jan, Feb, Nov, Dec007
Nitrogen, ammonia total [as N]daily maximumreport only (kg/d)Mar–May007
Nitrogen, ammonia total [as N]daily maximumreport only (kg/d)Jun–Oct007
Phosphorus, total [as P]monthly averagereport only (mg/L)all year007
Phosphorus, total [as P]daily maximumreport only (mg/L)all year007
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLJun–Sep007
E. coli, MTEC-MFdaily maximum≤ 298 #/100mLJun–Sep007
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007
Duration of dischargemonthly averagereport only (d)all year007
Duration of dischargedaily maximumreport only (d)all year007
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year008
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year008
Conductivitymonthly averagereport only (umho/cm)all year008
Conductivitydaily maximumreport only (umho/cm)all year008
pHminimum≥ 6.5 SUall year008
pHmaximum≤ 9 SUall year008
Solids, total suspendedmonthly averagereport only (mg/L)all year008
Solids, total suspendeddaily maximumreport only (mg/L)all year008
Solids, total suspendedmonthly averagereport only (kg/d)all year008
Solids, total suspendeddaily maximumreport only (kg/d)all year008
Chloride [as Cl]monthly averagereport only (mg/L)all year008
Chloride [as Cl]daily maximumreport only (mg/L)all year008
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year008
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year008
Toxicity [acute], Ceriodaphnia dubiamonthly averagereport only (tox acute)all year008
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteall year008
Toxicity [acute], Pimephales promelas [Fathead Minnow]monthly averagereport only (tox acute)all year008
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 tox acuteall year008
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year010
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year010
Conductivitymonthly averagereport only (umho/cm)all year010
Conductivitydaily maximumreport only (umho/cm)all year010
pHdaily minimum≥ 6 SUall year010
pHdaily maximum≤ 9 SUall year010
Chloride [as Cl]monthly averagereport only (mg/L)all year010
Chloride [as Cl]daily maximumreport only (mg/L)all year010
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year010
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year010
Toxicity [acute], Ceriodaphnia dubiamonthly averagereport only (tox acute)all year010
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteall year010
Toxicity [acute], Pimephales promelas [Fathead Minnow]monthly averagereport only (tox acute)all year010
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 tox acuteall year010

How strict are these limits?

Cited limits by parameter: Nebraska's rules and the federal ones.

Same industry: the 21 Electric Services permits in Nebraska.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NE0123935 · MCP: https://passage-data.com/mcp