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Phosphate Rock, Tampa, Florida. NPDES permit FL0321486, in force until Aug 18, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 001 |
| Flow rate | daily maximum | report only (MGD) | all year | 001 |
| Flow rate | monthly average | report only (MGD) | all year | 001 |
| Turbidity | daily maximum | report only (NTU) | all year | 001 |
| Turbidity | monthly average | report only (NTU) | all year | 001 |
| Turbidity | daily maximum | report only (NTU) | all year | 001 |
| Turbidity | monthly average | report only (NTU) | all year | 001 |
| Turbidity | daily maximum | report only (NTU) | all year | 001 |
| Turbidity | monthly average | report only (NTU) | all year | 001 |
| Turbidity | daily maximum | ≤ 0 NTU | all year | 001 |
| Turbidity | monthly average | ≤ 0 NTU | all year | 001 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | 001 |
| Specific conductance | monthly average | report only (umho/cm) | all year | 001 |
| Oxygen, dissolved [DO] | monthly average minimum | report only (mg/L) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 4 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, fixed suspended | daily maximum | report only (mg/L) | all year | 001 |
| Solids, fixed suspended | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | annual total | report only (ton/yr) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 001 |
| Fluoride, total [as F] | daily maximum | ≤ 5 mg/L | all year | 001 |
| Fluoride, total [as F] | monthly average | report only (mg/L) | all year | 001 |
| Rainfall | daily maximum | report only (in) | all year | 001 |
| Rainfall | monthly total | report only (in) | all year | 001 |
| LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | minimum | ≥ 100 % | all year | 001 |
| LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | minimum | ≥ 100 % | all year | 001 |
| LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | minimum | ≥ 100 % | all year | 001 |
| LC50 Static Renewal 96Hr Acute Menidia | minimum | ≥ 100 % | all year | 001 |
| LC50 Static Renewal 96Hr Acute Menidia | minimum | ≥ 100 % | all year | 001 |
| LC50 Static Renewal 96Hr Acute Menidia | minimum | ≥ 100 % | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 004 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 004 |
| Flow rate | daily maximum | report only (MGD) | all year | 004 |
| Flow rate | monthly average | report only (MGD) | all year | 004 |
| Turbidity | daily maximum | report only (NTU) | all year | 004 |
| Turbidity | monthly average | report only (NTU) | all year | 004 |
| Turbidity | daily maximum | report only (NTU) | all year | 004 |
| Turbidity | monthly average | report only (NTU) | all year | 004 |
| Turbidity | daily maximum | report only (NTU) | all year | 004 |
| Turbidity | monthly average | report only (NTU) | all year | 004 |
| Turbidity | daily maximum | ≤ 0 NTU | all year | 004 |
| Turbidity | monthly average | ≤ 0 NTU | all year | 004 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | 004 |
| Specific conductance | monthly average | report only (umho/cm) | all year | 004 |
| Oxygen, dissolved [DO] | monthly average minimum | report only (mg/L) | all year | 004 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 4 mg/L | all year | 004 |
| pH | daily minimum | ≥ 6.5 SU | all year | 004 |
| pH | daily maximum | ≤ 8.5 SU | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 004 |
| Solids, fixed suspended | daily maximum | report only (mg/L) | all year | 004 |
| Solids, fixed suspended | monthly average | report only (mg/L) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 004 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 004 |
| Nitrogen, total [as N] | annual total | report only (ton/yr) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 004 |
| Fluoride, total [as F] | daily maximum | ≤ 5 mg/L | all year | 004 |
| Fluoride, total [as F] | monthly average | report only (mg/L) | all year | 004 |
| LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | minimum | ≥ 100 % | all year | 004 |
| LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | minimum | ≥ 100 % | all year | 004 |
| LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | minimum | ≥ 100 % | all year | 004 |
| LC50 Static Renewal 96Hr Acute Menidia | minimum | ≥ 100 % | all year | 004 |
| LC50 Static Renewal 96Hr Acute Menidia | minimum | ≥ 100 % | all year | 004 |
| LC50 Static Renewal 96Hr Acute Menidia | minimum | ≥ 100 % | all year | 004 |
| Nitrogen, total [as N] | annual total | report only (ton/yr) | all year | TNL |
| Nitrogen, total [as N] | 5-year average | report only (ton/yr) | all year | TNL |
| Nitrogen, total [as N] | monthly total | report only (ton/mo) | all year | TNL |
| Nitrogen, total [as N] | annual total | ≤ 5.1 ton/yr | all year | TNL |
| Nitrogen, total [as N] | 5-year average | ≤ 3.4 ton/yr | all year | TNL |
| Phosphorus, total [as P] | 5-year average | report only (ton/yr) | all year | TNL |
Cited limits by parameter: Florida's rules and the federal ones.
Same industry: the 22 Mining and Quarrying of Nonmetallic Minerals permits in Florida.
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