TRUNKLINE GAS COMPANY

NPDES permit IL0004294 · Minor NON-POTW · effective, expires 2030-08-31 · 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
16required values missing, on 1 form(s)
3of 4 forms filed late

Last period with anything received: 2026-06-30. Most often over: BOD, 5-day, 20 deg. C (3).

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 (64)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. C30DA AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG <= 2.21 lb/d all year
001BOD, 5-day, 20 deg. C30DA AVG <= 2.21 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 4.42 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 4.42 lb/d all year
001pHMO MIN >= 6.5 SU all year
001pHMO MIN >= 6.5 SU all year
001pHMO MAX <= 9 SU all year
001pHMO MAX <= 9 SU all year
001Solids, total suspended30DA AVG <= 12 mg/L all year
001Solids, total suspended30DA AVG <= 12 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Solids, total suspended30DA AVG <= 2.65 lb/d all year
001Solids, total suspended30DA AVG <= 2.65 lb/d all year
001Solids, total suspendedDAILY MX <= 5.3 lb/d all year
001Solids, total suspendedDAILY MX <= 5.3 lb/d all year
001Oil & Grease30DA AVG <= 15 mg/L all year
001Oil & Grease30DA AVG <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 30 mg/L all year
001Oil & GreaseDAILY MX <= 30 mg/L all year
001Oil & Grease30DA AVG <= 3.32 lb/d all year
001Oil & Grease30DA AVG <= 3.32 lb/d all year
001Oil & GreaseDAILY MX <= 6.63 lb/d all year
001Oil & GreaseDAILY MX <= 6.63 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 4.6 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 4.6 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 2.6 mg/L Mar, Apr, May
001Nitrogen, ammonia total [as N]30DA AVG <= 2.6 mg/L Mar, Apr, May
001Nitrogen, ammonia total [as N]30DA AVG <= 1.9 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 1.9 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 2.6 mg/L Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 2.6 mg/L Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Mar, Apr, May
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Mar, Apr, May
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= .57 lb/d Mar, Apr, May
001Nitrogen, ammonia total [as N]30DA AVG <= .57 lb/d Mar, Apr, May
001Nitrogen, ammonia total [as N]30DA AVG <= .42 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]30DA AVG <= .42 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]30DA AVG <= .57 lb/d Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= .57 lb/d Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 1.02 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 1.02 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 3.32 lb/d Mar, Apr, May
001Nitrogen, ammonia total [as N]DAILY MX <= 3.32 lb/d Mar, Apr, May
001Nitrogen, ammonia total [as N]DAILY MX <= 3.32 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 3.32 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 3.32 lb/d Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 3.32 lb/d Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 2.67 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 2.67 lb/d Jan, Feb, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG 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
001Flow, in conduit or thru treatment plantDAILY MX report only 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