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Railroads, Line-Haul Operating, Dupo, Illinois. NPDES permit IL0045284 expired Jun 30, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 001 |
| pH | monthly maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Cyanide, weak acid, dissociable | semi-annual maximum | ≤ .022 mg/L | all year | 001 |
| Cyanide, total [as CN] | semi-annual maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | semi-annual maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | semi-annual maximum | report only (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 |
| Acenaphthylene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Acenaphthene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Anthracene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Benzo[k]fluoranthene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Benzo[a]pyrene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Chrysene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Fluoranthene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Fluorene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Indeno[1,2,3-cd]pyrene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Phenanthrene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Pyrene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Benzo[ghi]perylene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Benzo[a]anthracene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Dibenz[a,h]anthracene | semi-annual maximum | report only (mg/L) | all year | 001 |
| Naphthalene | semi-annual maximum | report only (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 |
| Flow, in conduit or thru treatment plant | semi-annual average | report only (MGD) | all year | 001 |
| 3,4-Benzofluoranthene | semi-annual maximum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 002 |
| pH | monthly maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Cyanide, weak acid, dissociable | semi-annual maximum | ≤ .022 mg/L | all year | 002 |
| Cyanide, total [as CN] | semi-annual maximum | report only (mg/L) | all year | 002 |
| Arsenic, total [as As] | semi-annual maximum | report only (mg/L) | all year | 002 |
| Lead, total [as Pb] | semi-annual maximum | report only (mg/L) | all year | 002 |
| Oil and grease | 30-day average | ≤ 15 mg/L | all year | 002 |
| Oil and grease | daily maximum | ≤ 30 mg/L | all year | 002 |
| Acenaphthylene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Acenaphthene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Anthracene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Benzo[k]fluoranthene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Benzo[a]pyrene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Chrysene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Fluoranthene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Fluorene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Indeno[1,2,3-cd]pyrene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Phenanthrene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Pyrene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Benzo[ghi]perylene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Benzo[a]anthracene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Dibenz[a,h]anthracene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Naphthalene | semi-annual maximum | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | semi-annual average | report only (MGD) | all year | 002 |
| 3,4-Benzofluoranthene | semi-annual maximum | report only (mg/L) | all year | 002 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 8 Railroad Transportation permits in Illinois.
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Your permit document is the final word. As JSON: /api/v1/permits/IL0045284 · MCP: https://passage-data.com/mcp