Peoples Gas Light and Coke Company — NPDES permit IL0069248: limits, due date and EPA's record

Natural Gas Transmission, Fisher, Illinois. NPDES permit IL0069248 expired Oct 31, 2024; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (19)

Parameter	Statistic	Limit	Months	Outfall
Oxygen, dissolved [DO]	monthly average minimum	≥ 5.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	001
Oxygen, dissolved [DO]	minimum weekly average	≥ 6 mg/L	Mar–Jul	001
Oxygen, dissolved [DO]	minimum weekly average	≥ 4 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	001
Oxygen, dissolved [DO]	daily minimum	≥ 5 mg/L	Mar–Jul	001
Oxygen, dissolved [DO]	daily minimum	≥ 3.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	001
pH	monthly minimum	≥ 6.5 SU	all year	001
pH	monthly maximum	≤ 9 SU	all year	001
Solids, total suspended	30-day average	≤ 37 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 74 mg/L	all year	001
Iron, total [as Fe]	30-day average	≤ 2 mg/L	all year	001
Iron, total [as Fe]	daily maximum	≤ 4 mg/L	all year	001
Oil and grease	30-day average	≤ 15 mg/L	all year	001
Oil and grease	daily maximum	≤ 30 mg/L	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
BOD, carbonaceous [5 day, 20 C]	30-day average	≤ 25 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 50 mg/L	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	A01
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	A01

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/IL0069248 · MCP: https://passage-data.com/mcp