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Exxonmobil Oil Corp - E Chicago Terminal

Gasoline Service Stations, East Chicago, Indiana. NPDES permit IN0056910, in force until Feb 28, 2027. Last 12 months: no values over a limit, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (23 values)
Renewal application due
Sep 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 12 reports late

Limits in force (27)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 83 lb/dall year
Solids, total suspendeddaily maximum≤ 124 lb/dall year
Oil and grease, hexane extr methodmonthly average≤ 10 mg/Lall year
Oil and grease, hexane extr methoddaily maximum≤ 15 mg/Lall year
Oil and grease, hexane extr methodmonthly average≤ 28 lb/dall year
Oil and grease, hexane extr methoddaily maximum≤ 41 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LMay–Nov
Nitrogen, ammonia total [as N]daily maximum≤ 3.6 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 3.9 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 4.1 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 8.8 lb/dMay–Nov
Nitrogen, ammonia total [as N]daily maximum≤ 9.9 lb/dJan, Feb, Mar, Apr, Dec
Benzenedaily maximum≤ .005 mg/Lall year
Benzenedaily maximum≤ .014 lb/dall 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
Chlorine, total residualmonthly average≤ .01 mg/Lall year
Chlorine, total residualdaily maximum< .06 mg/Lall year
Chlorine, total residualmonthly average≤ .028 lb/dall year
Chlorine, total residualdaily maximum< .165 lb/dall year
Flow, totalmonthly totalreport only (Mgal/mo)all year

How strict are these limits?

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

Same industry: the 11 Automotive Dealers and Gasoline Service Stations permits in Indiana.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0056910 · MCP: https://passage-data.com/mcp