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Crushed And Broken Limestone, Calera, Alabama. NPDES permit AL0024252, in force until Jun 30, 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 | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 003 |
| pH | daily maximum | ≤ 8.5 SU | all year | 003 |
| pH | daily maximum | ≤ 8.5 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 003 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 003 |
| Copper, dissolved [as Cu] | monthly average | ≤ 4.95 ug/L | all year | 003 |
| Copper, dissolved [as Cu] | monthly average | ≤ 4.95 ug/L | all year | 003 |
| Copper, dissolved [as Cu] | daily maximum | ≤ 6.99 ug/L | all year | 003 |
| Copper, dissolved [as Cu] | daily maximum | ≤ 6.99 ug/L | all year | 003 |
| Lead, dissolved [as Pb] | monthly average | ≤ 1.17 ug/L | all year | 003 |
| Lead, dissolved [as Pb] | monthly average | ≤ 1.17 ug/L | all year | 003 |
| Lead, dissolved [as Pb] | daily maximum | ≤ 30.13 ug/L | all year | 003 |
| Lead, dissolved [as Pb] | daily maximum | ≤ 30.13 ug/L | all year | 003 |
| Zinc, dissolved [as Zn] | monthly average | ≤ 65.13 ug/L | all year | 003 |
| Zinc, dissolved [as Zn] | monthly average | ≤ 65.13 ug/L | all year | 003 |
| Zinc, dissolved [as Zn] | daily maximum | ≤ 65.13 ug/L | all year | 003 |
| Zinc, dissolved [as Zn] | daily maximum | ≤ 65.13 ug/L | all year | 003 |
| Selenium, total [as Se] | monthly average | ≤ 5 ug/L | all year | 003 |
| Selenium, total [as Se] | monthly average | ≤ 5 ug/L | all year | 003 |
| Selenium, total [as Se] | daily maximum | ≤ 20 ug/L | all year | 003 |
| Selenium, total [as Se] | daily maximum | ≤ 20 ug/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 | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 003 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 003 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 004 |
| pH | daily minimum | ≥ 6 SU | all year | 004 |
| pH | daily maximum | ≤ 8.5 SU | all year | 004 |
| pH | daily maximum | ≤ 8.5 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 004 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 004 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 004 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Selenium, total [as Se] | monthly average | ≤ 7 ug/L | all year | 004 |
| Selenium, total [as Se] | monthly average | ≤ 7 ug/L | all year | 004 |
| Selenium, total [as Se] | daily maximum | ≤ 29 ug/L | all year | 004 |
| Selenium, total [as Se] | daily maximum | ≤ 29 ug/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 | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 004 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 004 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 004 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 004 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year | 005 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year | 005 |
| pH | daily minimum | ≥ 6 SU | all year | 005 |
| pH | daily minimum | ≥ 6 SU | all year | 005 |
| pH | daily maximum | ≤ 8.5 SU | all year | 005 |
| pH | daily maximum | ≤ 8.5 SU | all year | 005 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 005 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 005 |
| Solids, total suspended | weekly average | ≤ 37.5 mg/L | all year | 005 |
| Solids, total suspended | weekly average | ≤ 37.5 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 005 |
| Solids, total suspended | monthly average | ≤ 235.6 lb/d | all year | 005 |
| Solids, total suspended | monthly average | ≤ 235.6 lb/d | all year | 005 |
| Solids, total suspended | weekly average | ≤ 424.09 lb/d | all year | 005 |
| Solids, total suspended | weekly average | ≤ 424.09 lb/d | all year | 005 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 005 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | all year | 005 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | all year | 005 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3 mg/L | all year | 005 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3 mg/L | all year | 005 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 18.8 lb/d | all year | 005 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 18.8 lb/d | all year | 005 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 28.2 lb/d | all year | 005 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 28.2 lb/d | all year | 005 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | Apr–Oct | 005 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | Apr–Oct | 005 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (mg/L) | Apr–Oct | 005 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (mg/L) | Apr–Oct | 005 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | Apr–Oct | 005 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | Apr–Oct | 005 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (lb/d) | Apr–Oct | 005 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (lb/d) | Apr–Oct | 005 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Apr–Oct | 005 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Apr–Oct | 005 |
| Nitrite + Nitrate total [as N] | weekly average | report only (mg/L) | Apr–Oct | 005 |
| Nitrite + Nitrate total [as N] | weekly average | report only (mg/L) | Apr–Oct | 005 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | Apr–Oct | 005 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | Apr–Oct | 005 |
| Nitrite + Nitrate total [as N] | weekly average | report only (lb/d) | Apr–Oct | 005 |
| Nitrite + Nitrate total [as N] | weekly average | report only (lb/d) | Apr–Oct | 005 |
| Phosphorus, total [as P] | monthly average | ≤ .3 mg/L | Apr–Oct | 005 |
| Phosphorus, total [as P] | monthly average | ≤ .3 mg/L | Apr–Oct | 005 |
| Phosphorus, total [as P] | weekly average | ≤ .45 mg/L | Apr–Oct | 005 |
| Phosphorus, total [as P] | weekly average | ≤ .45 mg/L | Apr–Oct | 005 |
| Phosphorus, total [as P] | monthly average | ≤ 2.8 lb/d | Apr–Oct | 005 |
| Phosphorus, total [as P] | monthly average | ≤ 2.8 lb/d | Apr–Oct | 005 |
| Phosphorus, total [as P] | weekly average | ≤ 4.2 lb/d | Apr–Oct | 005 |
| Phosphorus, total [as P] | weekly average | ≤ 4.2 lb/d | Apr–Oct | 005 |
| Selenium, total [as Se] | monthly average | ≤ 5 ug/L | all year | 005 |
| Selenium, total [as Se] | monthly average | ≤ 5 ug/L | all year | 005 |
| Selenium, total [as Se] | daily maximum | ≤ 20 ug/L | all year | 005 |
| Selenium, total [as Se] | daily maximum | ≤ 20 ug/L | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Chlorine, total residual | monthly average | ≤ .011 mg/L | all year | 005 |
| Chlorine, total residual | monthly average | ≤ .011 mg/L | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year | 005 |
| E. coli | monthly average | ≤ 126 #/100mL | Jun–Sep | 005 |
| E. coli | monthly average | ≤ 126 #/100mL | Jun–Sep | 005 |
| E. coli | monthly average | ≤ 548 #/100mL | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 005 |
| E. coli | monthly average | ≤ 548 #/100mL | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 005 |
| E. coli | daily maximum | ≤ 298 #/100mL | Jun–Sep | 005 |
| E. coli | daily maximum | ≤ 298 #/100mL | Jun–Sep | 005 |
| E. coli | daily maximum | ≤ 2507 #/100mL | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 005 |
| E. coli | daily maximum | ≤ 2507 #/100mL | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 005 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 005 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 005 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 005 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 19 mg/L | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 19 mg/L | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 28.5 mg/L | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 28.5 mg/L | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 179 lb/d | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 179 lb/d | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 268.5 lb/d | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 268.5 lb/d | all year | 005 |
| pH | daily minimum | ≥ 6 SU | all year | 007 |
| pH | daily minimum | ≥ 6 SU | all year | 007 |
| pH | daily maximum | ≤ 8.5 SU | all year | 007 |
| pH | daily maximum | ≤ 8.5 SU | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 35 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 35 mg/L | all year | 007 |
| Selenium, total [as Se] | monthly average | ≤ 11 ug/L | all year | 007 |
| Selenium, total [as Se] | monthly average | ≤ 11 ug/L | all year | 007 |
| Selenium, total [as Se] | daily maximum | ≤ 41 ug/L | all year | 007 |
| Selenium, total [as Se] | daily maximum | ≤ 41 ug/L | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 007 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 007 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 007 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 007 |
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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