GRAND TOWER ENERGY CENTER LLC

NPDES permit IL0000124 · Major NON-POTW · effective, expires 2030-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
3of 43 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (46)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Oil & Grease30DA AVG <= 15 mg/L all year
001Oil & GreaseDAILY MX report only all year
001Oil & GreaseDAILY MX <= 20 mg/L all year
001Cyanide, total [as CN]DAILY MX report only all year
001Cyanide, free [amenable to chlorination]DAILY MX report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Fluoride, total [as F]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Boron, total [as B]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Iron, dissolved [as Fe]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Manganese, total [as Mn]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Phenolics, total recoverableDAILY MX report only 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
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
A03BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
A03BOD, 5-day, 20 deg. CDAILY MX <= 60 mg/L all year
A03BOD, 5-day, 20 deg. C30DA AVG <= 1.25 lb/d all year
A03BOD, 5-day, 20 deg. CDAILY MX <= 2.5 lb/d all year
A03pHMO MIN >= 6 SU all year
A03pHMO MAX <= 9 SU all year
A03Solids, total suspended30DA AVG <= 30 mg/L all year
A03Solids, total suspendedDAILY MX <= 60 mg/L all year
A03Solids, total suspended30DA AVG <= 1.25 lb/d all year
A03Solids, total suspendedDAILY MX <= 2.5 lb/d all year
A03Flow, in conduit or thru treatment plantMO AVG report only all year
A03Flow, in conduit or thru treatment plantDAILY MX report only all year
A03Chlorine, total residualDAILY MX <= .75 mg/L all year
A03Coliform, fecal generalDAILY MX <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct

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