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Asphalt Paving Mixtures And Blocks, Meredosia, Illinois. NPDES permit IL0070343 expired Jan 31, 2026; its limits still apply. Last 12 months: no values over a limit, 37 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | monthly minimum | ≥ 6.5 SU | all year | 001 |
| pH | monthly maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (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 |
| 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 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 63 deg F | Jan, Feb, Mar, Dec | 002 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 93 deg F | Apr–Nov | 002 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 002 |
| pH | monthly maximum | ≤ 9 SU | all year | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.9 mg/L | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .9 mg/L | Jun–Aug | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.3 mg/L | Mar, Apr, May, Sep, Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.7 mg/L | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Jun–Aug | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.7 mg/L | Mar, Apr, May, Sep, Oct | 002 |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 2.3 mg/L | Jun–Aug | 002 |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 3.3 mg/L | Mar, Apr, May, Sep, Oct | 002 |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 4.8 mg/L | Jan, Feb, Nov, Dec | 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 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 003 |
| pH | monthly maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 23 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jun–Aug | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.4 mg/L | Jan, Feb, Nov, Dec | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.8 mg/L | Mar, Apr, May, Sep, Oct | 003 |
| Cyanide, total [as CN] | quarterly maximum | report only (ug/L) | Jan, Apr, Jul, Oct | 003 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 003 |
| Oil and grease | 30-day average | ≤ 10 mg/L | all year | 003 |
| Oil and grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 004 |
| pH | monthly maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 23 mg/L | all year | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.4 mg/L | Jan, Feb, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jun–Aug | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.8 mg/L | Mar, Apr, May, Sep, Oct | 004 |
| Cyanide, total [as CN] | quarterly maximum | report only (ug/L) | Jan, Apr, Jul, Oct | 004 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 004 |
| Oil and grease | 30-day average | ≤ 10 mg/L | all year | 004 |
| Oil and grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 9 Petroleum Refining and Related Industries permits in Illinois.
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On EPA ECHO: Facility report · DMR history
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