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Bridge, Tunnel, & Elevated Highway, Hampton, Virginia. NPDES permit VA0093084, in force until Mar 31, 2031. Last 12 months: no values over a limit, 2 of 25 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | maximum | report only (deg C) | all year | 001 |
| Turbidity | average | report only (NTU) | all year | 001 |
| Turbidity | maximum | report only (NTU) | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum | ≤ 60 mg/L | all year | 001 |
| Solids, settleable | average | report only (mg/L) | all year | 001 |
| Solids, settleable | maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 001 |
| Sulfide, dissolved, [as S] | average | report only (mg/L) | all year | 001 |
| Sulfide, dissolved, [as S] | maximum | report only (mg/L) | all year | 001 |
| 4,4'-DDT | average | report only (ug/L) | all year | 001 |
| 4,4'-DDT | maximum | report only (ug/L) | all year | 001 |
| 4,4'-DDE | average | report only (ug/L) | all year | 001 |
| 4,4'-DDE | maximum | report only (ug/L) | all year | 001 |
| Petrol hydrocarbons, total recoverable | average | ≤ 10 mg/L | all year | 001 |
| Petrol hydrocarbons, total recoverable | maximum | ≤ 15 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 | maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | average | report only (mg/L) | all year | 001 |
| Chlorine, total residual | maximum | ≤ .4 mg/L | all year | 001 |
| Chlordane | average | report only (ug/L) | all year | 001 |
| Chlordane | maximum | report only (ug/L) | all year | 001 |
| Hydrogen sulfide | average | report only (mg/L) | all year | 001 |
| Hydrogen sulfide | maximum | report only (mg/L) | all year | 001 |
| TU Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | maximum | ≤ 10 tox acute | all year | 001 |
| TU 48Hr Acute Cyprinodon variegatus | maximum | ≤ 10 tox acute | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | maximum | ≤ 60 mg/L | all year | 002 |
| Nitrogen, total [as N] | average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | maximum | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | maximum | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | average | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | maximum | report only (mg/L) | all year | 002 |
| Toxaphene | average | report only (ug/L) | all year | 002 |
| Toxaphene | maximum | report only (ug/L) | all year | 002 |
| Petrol hydrocarbons, total recoverable | average | ≤ 10 mg/L | all year | 002 |
| Petrol hydrocarbons, total recoverable | 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 | maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | average | report only (mg/L) | all year | 002 |
| Chlorine, total residual | maximum | ≤ 1.4 mg/L | all year | 002 |
Cited limits by parameter: Virginia's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/VA0093084 · MCP: https://passage-data.com/mcp