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Electric Services, major discharger, Bremo Bluff, Virginia. NPDES permit VA0004138, in force until Aug 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | report only (SU) | all year | 008 |
| pH | maximum | report only (SU) | all year | 008 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 008 |
| Solids, total suspended | maximum | report only (mg/L) | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .8 MGD | all year | 008 |
| Flow, in conduit or thru treatment plant | maximum | report only (MGD) | all year | 008 |
| pH | minimum | ≥ 6 SU | all year | 504 |
| pH | maximum | ≤ 9 SU | all year | 504 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 504 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 504 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 504 |
| Oil & Grease | maximum | ≤ 20 mg/L | all year | 504 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 9.6 mg/L | all year | 504 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14 mg/L | all year | 504 |
| Cyanide, free [amenable to chlorination] | monthly average | report only (ug/L) | all year | 504 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (ug/L) | all year | 504 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 504 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 504 |
| Chloride [as Cl] | monthly average | ≤ 450 mg/L | all year | 504 |
| Chloride [as Cl] | daily maximum | ≤ 820 mg/L | all year | 504 |
| Arsenic, total recoverable | monthly average | ≤ 280 ug/L | all year | 504 |
| Arsenic, total recoverable | daily maximum | ≤ 510 ug/L | all year | 504 |
| Selenium, total recoverable | monthly average | ≤ 9.6 ug/L | all year | 504 |
| Selenium, total recoverable | daily maximum | ≤ 18 ug/L | all year | 504 |
| Barium, total recoverable | monthly average | report only (ug/L) | all year | 504 |
| Barium, total recoverable | daily maximum | report only (ug/L) | all year | 504 |
| Beryllium, total [as Be] | monthly average | report only (ug/L) | all year | 504 |
| Beryllium, total [as Be] | daily maximum | report only (ug/L) | all year | 504 |
| Boron, total [as B] | monthly average | report only (ug/L) | all year | 504 |
| Boron, total [as B] | daily maximum | report only (ug/L) | all year | 504 |
| Cobalt, total [as Co] | monthly average | report only (ug/L) | all year | 504 |
| Cobalt, total [as Co] | daily maximum | report only (ug/L) | all year | 504 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 504 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 504 |
| Thallium, total [as Tl] | monthly average | ≤ 1.4 ug/L | all year | 504 |
| Thallium, total [as Tl] | daily maximum | ≤ 1.4 ug/L | all year | 504 |
| Molybdenum, total [as Mo] | monthly average | report only (ug/L) | all year | 504 |
| Molybdenum, total [as Mo] | daily maximum | report only (ug/L) | all year | 504 |
| Nickel, total recoverable | monthly average | ≤ 31 ug/L | all year | 504 |
| Nickel, total recoverable | daily maximum | ≤ 57 ug/L | all year | 504 |
| Silver total recoverable | monthly average | ≤ 2.7 ug/L | all year | 504 |
| Silver total recoverable | daily maximum | ≤ 5 ug/L | all year | 504 |
| Zinc, total recoverable | monthly average | ≤ 110 ug/L | all year | 504 |
| Zinc, total recoverable | daily maximum | ≤ 210 ug/L | all year | 504 |
| Aluminum, total [as Al] | monthly average | report only (ug/L) | all year | 504 |
| Aluminum, total [as Al] | daily maximum | report only (ug/L) | all year | 504 |
| Cadmium, total recoverable | monthly average | ≤ 1.8 ug/L | all year | 504 |
| Cadmium, total recoverable | daily maximum | ≤ 3.2 ug/L | all year | 504 |
| Lead, total recoverable | monthly average | ≤ 19 ug/L | all year | 504 |
| Lead, total recoverable | daily maximum | ≤ 35 ug/L | all year | 504 |
| Copper, total recoverable | monthly average | ≤ 12 ug/L | all year | 504 |
| Copper, total recoverable | daily maximum | ≤ 23 ug/L | all year | 504 |
| Vanadium, total recoverable | monthly average | report only (ug/L) | all year | 504 |
| Vanadium, total recoverable | daily maximum | report only (ug/L) | all year | 504 |
| Antimony, total recoverable | monthly average | ≤ 2100 ug/L | all year | 504 |
| Antimony, total recoverable | daily maximum | ≤ 2100 ug/L | all year | 504 |
| Chromium, trivalent total recoverable | monthly average | ≤ 120 ug/L | all year | 504 |
| Chromium, trivalent total recoverable | daily maximum | ≤ 220 ug/L | all year | 504 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 504 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 6 MGD | all year | 504 |
| Mercury, total recoverable | monthly average | ≤ 1.1 ug/L | all year | 504 |
| Mercury, total recoverable | daily maximum | ≤ 2.1 ug/L | all year | 504 |
| Chromium, hexavalent tot recoverable | monthly average | ≤ 13 ug/L | all year | 504 |
| Chromium, hexavalent tot recoverable | daily maximum | ≤ 24 ug/L | all year | 504 |
| NOAEL Static 48Hr Acute Ceriodaphnia dubia | minimum | ≥ 100 % | all year | 504 |
| NOAEL Static 48Hr Acute Pimephales promelas | minimum | ≥ 100 % | all year | 504 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | maximum | ≤ 4.35 tox chronic | all year | 504 |
| TU Static Renewal 7-Day Chronic Pimphales promelas | maximum | ≤ 4.35 tox chronic | all year | 504 |
| Arsenic, total recoverable | monthly average | ≤ 8 ug/L | all year | 604 |
| Arsenic, total recoverable | daily maximum | ≤ 11 ug/L | all year | 604 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 604 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .5 MGD | all year | 604 |
| Mercury, total recoverable | monthly average | ≤ .356 ug/L | all year | 604 |
| Mercury, total recoverable | daily maximum | ≤ .788 ug/L | all year | 604 |
Cited limits by parameter: Virginia's rules and the federal ones.
Same industry: the 24 Electric Services permits in Virginia.
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