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Crushed And Broken Limestone, Calera, Alabama. NPDES permit AL0056073, in force until Aug 17, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 8.5 SU | all year | 001 |
| pH | daily maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Selenium, total recoverable | monthly average | = 5 ug/L | all year | 001 |
| Selenium, total recoverable | monthly average | = 5 ug/L | all year | 001 |
| Selenium, total recoverable | daily maximum | = 20 ug/L | all year | 001 |
| Selenium, total recoverable | daily maximum | = 20 ug/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 | 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 | daily maximum | report only (MGD) | all year | 001 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 8.5 SU | all year | 002 |
| pH | daily maximum | ≤ 8.5 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 002 |
| Arsenic, dissolved [as As] | monthly average | = .373 ug/L | all year | 002 |
| Arsenic, dissolved [as As] | monthly average | = .373 ug/L | all year | 002 |
| Arsenic, dissolved [as As] | daily maximum | report only (ug/L) | all year | 002 |
| Arsenic, dissolved [as As] | daily maximum | report only (ug/L) | all year | 002 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 002 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 002 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 002 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 002 |
| Manganese, total [as Mn] | monthly average | report only (mg/L) | all year | 002 |
| Manganese, total [as Mn] | monthly average | report only (mg/L) | all year | 002 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 002 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 002 |
| Oil and grease | monthly average | report only (mg/L) | all year | 002 |
| Oil and grease | monthly average | report only (mg/L) | all year | 002 |
| Oil and grease | daily maximum | = 15 mg/L | all year | 002 |
| Oil and grease | daily maximum | = 15 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 | 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 | daily maximum | report only (MGD) | all year | 002 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Chemical oxygen demand [COD] | monthly average | report only (mg/L) | all year | 002 |
| Chemical oxygen demand [COD] | monthly average | report only (mg/L) | all year | 002 |
| Chemical oxygen demand [COD] | daily maximum | report only (mg/L) | all year | 002 |
| Chemical oxygen demand [COD] | daily maximum | report only (mg/L) | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 006 |
| pH | daily minimum | ≥ 6 SU | all year | 006 |
| pH | daily maximum | ≤ 8.5 SU | all year | 006 |
| pH | daily maximum | ≤ 8.5 SU | all year | 006 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 006 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| pH | daily minimum | ≥ 6 SU | all year | 009 |
| pH | daily minimum | ≥ 6 SU | all year | 009 |
| pH | daily maximum | ≤ 8.5 SU | all year | 009 |
| pH | daily maximum | ≤ 8.5 SU | all year | 009 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 009 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 009 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 009 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 009 |
| Selenium, total recoverable | monthly average | = 5 ug/L | all year | 009 |
| Selenium, total recoverable | monthly average | = 5 ug/L | all year | 009 |
| Selenium, total recoverable | daily maximum | = 20 ug/L | all year | 009 |
| Selenium, total recoverable | daily maximum | = 20 ug/L | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 009 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 009 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 009 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 009 |
| pH | daily minimum | ≥ 6 SU | all year | 010 |
| pH | daily minimum | ≥ 6 SU | all year | 010 |
| pH | daily maximum | ≤ 8.5 SU | all year | 010 |
| pH | daily maximum | ≤ 8.5 SU | all year | 010 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 010 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 010 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 010 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 010 |
| Selenium, total recoverable | monthly average | = 5 ug/L | all year | 010 |
| Selenium, total recoverable | monthly average | = 5 ug/L | all year | 010 |
| Selenium, total recoverable | daily maximum | = 20 ug/L | all year | 010 |
| Selenium, total recoverable | daily maximum | = 20 ug/L | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 010 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 010 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 010 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 010 |
Cited limits by parameter: Alabama's rules and the federal ones.
Same industry: the 206 Mining and Quarrying of Nonmetallic Minerals permits in Alabama.
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