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Invenergy Nelson LLC

Electric Services, Rock Falls, Illinois. NPDES permit IL0074209, in force until Oct 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (7 values), outfall A01 form 0 monthly (12 values), outfall B01 form 0 monthly (28 values), outfall 001 form S twice a year
Renewal application due
May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 38 reports late

Limits in force (64)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec001
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov001
pHmonthly minimum≥ 6 SUall year001
pHmonthly maximum≤ 9 SUall year001
Chloride [as Cl]semi-annual averagereport only (mg/L)all year001
Chloride [as Cl]semi-annual averagereport only (mg/L)all year001
Sulfate, total [as SO4]semi-annual averagereport only (mg/L)all year001
Sulfate, total [as SO4]semi-annual averagereport only (mg/L)all year001
Fluoride, total [as F]semi-annual averagereport only (mg/L)all year001
Fluoride, total [as F]semi-annual averagereport only (mg/L)all year001
Iron, dissolved [as Fe]semi-annual averagereport only (mg/L)all year001
Iron, dissolved [as Fe]semi-annual averagereport only (mg/L)all year001
Manganese, total [as Mn]semi-annual averagereport only (mg/L)all year001
Manganese, total [as Mn]semi-annual averagereport only (mg/L)all year001
Silver, total [as Ag]semi-annual averagereport only (mg/L)all year001
Silver, total [as Ag]semi-annual averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantsemi-annual averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantsemi-annual averagereport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .05 mg/Lall year001
Chlorine, total residualdaily maximum≤ .988 lb/dall year001
Solids, total dissolved- 180 deg. Csemi-annual averagereport only (mg/L)all year001
Solids, total dissolved- 180 deg. Csemi-annual averagereport only (mg/L)all year001
pHmonthly minimum≥ 6 SUall yearA01
pHmonthly maximum≤ 9 SUall yearA01
Solids, total suspended30-day average≤ 15 mg/Lall yearA01
Solids, total suspendeddaily maximum≤ 30 mg/Lall yearA01
Solids, total suspended30-day average≤ 6.63 lb/dall yearA01
Solids, total suspendeddaily maximum≤ 116.3 lb/dall yearA01
Oil & Grease30-day average≤ 15 mg/Lall yearA01
Oil & Greasedaily maximum≤ 20 mg/Lall yearA01
Oil & Grease30-day average≤ 6.63 lb/dall yearA01
Oil & Greasedaily maximum≤ 77.56 lb/dall yearA01
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearA01
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearA01
pHmonthly minimum≥ 6 SUall yearB01
pHmonthly maximum≤ 9 SUall yearB01
Solids, total suspended30-day average≤ 15 mg/Lall yearB01
Solids, total suspendeddaily maximum≤ 30 mg/Lall yearB01
Solids, total suspended30-day average≤ 181.27 lb/dall yearB01
Solids, total suspendeddaily maximum≤ 476.6 lb/dall yearB01
Chromium, hexavalent [as Cr]30-day average≤ .1 mg/Lall yearB01
Chromium, hexavalent [as Cr]daily maximum≤ .3 mg/Lall yearB01
Chromium, hexavalent [as Cr]30-day average≤ 1.208 lb/dall yearB01
Chromium, hexavalent [as Cr]daily maximum≤ 4.77 lb/dall yearB01
Chromium, total [as Cr]30-day average≤ 1 mg/Lall yearB01
Chromium, total [as Cr]daily maximum≤ 2 mg/Lall yearB01
Chromium, total [as Cr]30-day average≤ 12.08 lb/dall yearB01
Chromium, total [as Cr]daily maximum≤ 31.78 lb/dall yearB01
Copper, total [as Cu]30-day average≤ .5 mg/Lall yearB01
Copper, total [as Cu]daily maximum≤ 1 mg/Lall yearB01
Copper, total [as Cu]30-day average≤ 6.042 lb/dall yearB01
Copper, total [as Cu]daily maximum≤ 15.89 lb/dall yearB01
Iron, total [as Fe]30-day average≤ 2 mg/Lall yearB01
Iron, total [as Fe]daily maximum≤ 4 mg/Lall yearB01
Iron, total [as Fe]30-day average≤ 24.17 lb/dall yearB01
Iron, total [as Fe]daily maximum≤ 63.55 lb/dall yearB01
Zinc, total [as Zn]30-day average≤ 1 mg/Lall yearB01
Zinc, total [as Zn]daily maximum≤ 2 mg/Lall yearB01
Zinc, total [as Zn]30-day average≤ 12.08 lb/dall yearB01
Zinc, total [as Zn]daily maximum≤ 31.78 lb/dall yearB01
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearB01
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearB01

How strict are these limits?

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

Same industry: the 45 Electric Services permits in Illinois.

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Your permit document is the final word. As JSON: /api/v1/permits/IL0074209 · MCP: https://passage-data.com/mcp