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Brick And Structural Clay Tile, Clay City, Indiana. NPDES permit IN0061981, in force until Jul 31, 2029. Last 12 months: no values over a limit, 2 of 28 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 001 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Oil and grease, hexane extr method | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 15 mg/L | all year | 001 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 001 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 001 |
| Iron, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Iron, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Aluminum, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Aluminum, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Lead, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 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] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Storm water flow | quarterly maximum | report only (Mgal/qtr) | Mar, Jun, Sep, Dec | 001 |
| Storm water flow | quarterly maximum | report only (Mgal/qtr) | Mar, Jun, Sep, Dec | 001 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 002 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 002 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Oil and grease, hexane extr method | monthly average | ≤ 10 mg/L | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | ≤ 15 mg/L | all year | 002 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 002 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 002 |
| Iron, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Iron, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Aluminum, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Aluminum, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Aluminum, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Lead, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Lead, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, 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 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Storm water flow | quarterly maximum | report only (Mgal/qtr) | Mar, Jun, Sep, Dec | 002 |
| Storm water flow | quarterly maximum | report only (Mgal/qtr) | Mar, Jun, Sep, Dec | 002 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 002 |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 80 Stone, Clay, Glass and Concrete Products permits in Indiana.
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