IMTT ILLINOIS LLC

NPDES permit IL0063061 · Minor NON-POTW · effective, expires 2029-08-31 · 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

3values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: Temperature, water deg. fahrenheit (2), pH (1).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (33)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO MAX <= 63 deg F Jan, Feb, Mar, Dec
001Temperature, water deg. fahrenheitMO MAX <= 93 deg F Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001pHMO MIN >= 6 SU all year
001pHMO MAX <= 9 SU all year
001Oil & Grease30DA AVG <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 30 mg/L all year
001Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX <= .1 mg/L all year
001Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= .75 mg/L all year
001Toluene30DA AVG <= .6 mg/L all year
001TolueneDAILY MX <= 2 mg/L all year
001BenzeneDAILY MX <= .05 mg/L all year
001Ethylbenzene30DA AVG <= .014 mg/L all year
001EthylbenzeneDAILY MX <= .15 mg/L all year
001Temperature, length of excursionTOTAL <= 87.6 hr/12mo 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
001Xylene [mix of m+o+p]30DA AVG <= .36 mg/L all year
001Xylene [mix of m+o+p]DAILY MX <= .92 mg/L all year
002pHMO MIN >= 6 SU all year
002pHMO MAX <= 9 SU all year
002Oil and grease30DA AVG <= 15 mg/L all year
002Oil and greaseDAILY MX <= 30 mg/L all year
002Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX <= .1 mg/L all year
002Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= .75 mg/L all year
002Toluene30DA AVG <= .6 mg/L all year
002TolueneDAILY MX <= 2 mg/L all year
002BenzeneDAILY MX <= .05 mg/L all year
002Ethylbenzene30DA AVG <= .014 mg/L all year
002EthylbenzeneDAILY MX <= .15 mg/L 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
002Xylene [mix of m+o+p]30DA AVG <= .36 mg/L all year
002Xylene [mix of m+o+p]DAILY MX <= .92 mg/L 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