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Gasoline Service Stations, Effingham, Illinois. NPDES permit IL0069931, in force until Jun 30, 2029. Last 12 months: over a limit once (last September 2026), 47 required values missing, 3 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form 0 monthly (10 values), form Q quarterly (17 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
September 2026Nitrogen, ammonia total [as N], quarterly maximum18.5 mg/L≤ 8.3 mg/L123%

Limits in force (29)

ParameterStatisticLimitMonths
pHmonthly minimum≥ 6.5 SUall year
pHmonthly maximum≤ 9 SUall year
Oil & Grease30-day average≤ 15 mg/Lall year
Oil & Greasedaily maximum≤ 30 mg/Lall year
Nitrogen, ammonia total [as N]quarterly maximum≤ 8.3 mg/LMar, Apr, May, Sep, Oct
Nitrogen, ammonia total [as N]quarterly maximum≤ 8.7 mg/LJun–Aug
Nitrogen, ammonia total [as N]quarterly maximum≤ 6.4 mg/LJan, Feb, Nov, Dec
Toluenedaily maximumreport only (mg/L)all year
Benzenedaily maximumreport only (mg/L)all year
Acenaphthylenequarterly maximumreport only (mg/L)all year
Acenaphthenequarterly maximumreport only (mg/L)all year
Anthracenequarterly maximumreport only (mg/L)all year
Benzo[k]fluoranthenequarterly maximumreport only (mg/L)all year
Benzo[a]pyrenequarterly maximumreport only (mg/L)all year
Chrysenequarterly maximumreport only (mg/L)all year
Ethylbenzenedaily maximumreport only (mg/L)all year
Fluoranthenequarterly maximumreport only (mg/L)all year
Fluorenequarterly maximumreport only (mg/L)all year
Indeno[1,2,3-cd]pyrenequarterly maximumreport only (mg/L)all year
Phenanthrenequarterly maximumreport only (mg/L)all year
Pyrenequarterly maximumreport only (mg/L)all year
Benzo[ghi]perylenequarterly maximumreport only (mg/L)all year
Benzo[a]anthracenequarterly maximumreport only (mg/L)all year
Dibenz[a,h]anthracenequarterly maximumreport only (mg/L)all year
Naphthalenequarterly maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
3,4-Benzofluoranthenequarterly maximumreport only (mg/L)all year
Xylene [mix of m+o+p]daily maximumreport only (mg/L)all year

How strict are these limits?

Cited limits by parameter: Illinois's rules and the federal ones.

Same industry: the 9 Automotive Dealers and Gasoline Service Stations permits in Illinois.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0069931 · MCP: https://passage-data.com/mcp