PEOPLES GAS LIGHT AND COKE COMPANY — NPDES permit IL0069248: limits, due date and EPA's record

NPDES permit IL0069248 · Minor NON-POTW · administratively continued, expires 2024-10-31 · EPA's file as of 2026-09-19

This permit expired on 2024-10-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (19)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	MO AV MN	>= 5.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
001	Oxygen, dissolved [DO]	MN WK AV	>= 6 mg/L	Mar, Apr, May, Jun, Jul
001	Oxygen, dissolved [DO]	MN WK AV	>= 4 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
001	Oxygen, dissolved [DO]	DAILY MN	>= 5 mg/L	Mar, Apr, May, Jun, Jul
001	Oxygen, dissolved [DO]	DAILY MN	>= 3.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
001	pH	MO MIN	>= 6.5 SU	all year
001	pH	MO MAX	<= 9 SU	all year
001	Solids, total suspended	30DA AVG	<= 37 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 74 mg/L	all year
001	Iron, total [as Fe]	30DA AVG	<= 2 mg/L	all year
001	Iron, total [as Fe]	DAILY MX	<= 4 mg/L	all year
001	Oil and grease	30DA AVG	<= 15 mg/L	all year
001	Oil and grease	DAILY MX	<= 30 mg/L	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	30DA AVG	<= 25 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 50 mg/L	all year
A01	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
A01	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year