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Gold Ores, Kershaw, South Carolina. NPDES permit SC0040479, in force until May 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | instantaneous minimum | report only (SU) | all year | 003 |
| pH | instantaneous maximum | report only (SU) | all year | 003 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 003 |
| Cyanide, free-water plus wastewaters | monthly average | ≤ 5.2 ug/L | all year | 003 |
| Cyanide, free-water plus wastewaters | daily maximum | ≤ 22 ug/L | all year | 003 |
| Cyanide, total [as CN] | monthly average | ≤ 140 ug/L | all year | 003 |
| Cyanide, total [as CN] | daily maximum | ≤ 204 ug/L | all year | 003 |
| Sulfide, total [as S] | monthly average | report only (mg/L) | all year | 003 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 003 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 003 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 003 |
| Cadmium, total [as Cd] | monthly average | ≤ 4.6 ug/L | all year | 003 |
| Cadmium, total [as Cd] | daily maximum | ≤ 12.3 ug/L | all year | 003 |
| Copper, total [as Cu] | monthly average | ≤ 25.7 ug/L | all year | 003 |
| Copper, total [as Cu] | daily maximum | ≤ 40 ug/L | all year | 003 |
| Lead, total [as Pb] | monthly average | ≤ 14.8 ug/L | all year | 003 |
| Lead, total [as Pb] | daily maximum | ≤ 378.7 ug/L | all year | 003 |
| Thallium, total [as Tl] | monthly average | ≤ .47 ug/L | all year | 003 |
| Thallium, total [as Tl] | daily maximum | ≤ 1.31 ug/L | all year | 003 |
| Zinc, total [as Zn] | monthly average | ≤ 375 ug/L | all year | 003 |
| Zinc, total [as Zn] | daily maximum | ≤ 375 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 | daily maximum | report only (MGD) | all year | 003 |
| Hydrogen sulfide, unionized | monthly average | ≤ 2 ug/L | all year | 003 |
| Hydrogen sulfide, unionized | daily maximum | ≤ 4 ug/L | all year | 003 |
| Mercury, total [as Hg] | monthly average | ≤ 51 ng/L | all year | 003 |
| Mercury, total [as Hg] | daily maximum | ≤ 168 ng/L | all year | 003 |
| Length of longest pH excursion | instantaneous maximum | ≤ 60 min | all year | 003 |
| pH range excursions, monthly total accum | monthly maximum | = 446 min | all year | 003 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | daily minimum | report only (%) | all year | 003 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average | ≤ 25 % | all year | 003 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 40 % | all year | 003 |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily minimum | report only (%) | all year | 003 |
| pH | instantaneous minimum | report only (SU) | all year | 004 |
| pH | instantaneous maximum | report only (SU) | all year | 004 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 004 |
| Cyanide, free-water plus wastewaters | monthly average | ≤ 5.2 ug/L | all year | 004 |
| Cyanide, free-water plus wastewaters | daily maximum | ≤ 22 ug/L | all year | 004 |
| Cyanide, total [as CN] | monthly average | ≤ 140 ug/L | all year | 004 |
| Cyanide, total [as CN] | daily maximum | ≤ 204 ug/L | all year | 004 |
| Sulfide, total [as S] | monthly average | report only (mg/L) | all year | 004 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 004 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 004 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 004 |
| Cadmium, total [as Cd] | monthly average | ≤ 4.6 ug/L | all year | 004 |
| Cadmium, total [as Cd] | daily maximum | ≤ 12.3 ug/L | all year | 004 |
| Copper, total [as Cu] | monthly average | ≤ 25.7 ug/L | all year | 004 |
| Copper, total [as Cu] | daily maximum | ≤ 40 ug/L | all year | 004 |
| Lead, total [as Pb] | monthly average | ≤ 14.8 ug/L | all year | 004 |
| Lead, total [as Pb] | daily maximum | ≤ 378.7 ug/L | all year | 004 |
| Thallium, total [as Tl] | monthly average | ≤ .47 ug/L | all year | 004 |
| Thallium, total [as Tl] | daily maximum | ≤ 1.31 ug/L | all year | 004 |
| Zinc, total [as Zn] | monthly average | ≤ 375 ug/L | all year | 004 |
| Zinc, total [as Zn] | daily maximum | ≤ 375 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 | daily maximum | report only (MGD) | all year | 004 |
| Hydrogen sulfide, unionized | monthly average | ≤ 2 ug/L | all year | 004 |
| Hydrogen sulfide, unionized | daily maximum | ≤ 4 ug/L | all year | 004 |
| Mercury, total [as Hg] | monthly average | ≤ 51 ng/L | all year | 004 |
| Mercury, total [as Hg] | daily maximum | ≤ 168 ng/L | all year | 004 |
| Length of longest pH excursion | instantaneous maximum | ≤ 60 min | all year | 004 |
| pH range excursions, monthly total accum | monthly maximum | = 446 min | all year | 004 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | daily minimum | report only (%) | all year | 004 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average | ≤ 25 % | all year | 004 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 40 % | all year | 004 |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily minimum | report only (%) | all year | 004 |
| pH | instantaneous minimum | report only (SU) | all year | 005 |
| pH | instantaneous maximum | report only (SU) | all year | 005 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 005 |
| Cyanide, free-water plus wastewaters | monthly average | ≤ 5.2 ug/L | all year | 005 |
| Cyanide, free-water plus wastewaters | daily maximum | ≤ 22 ug/L | all year | 005 |
| Cyanide, total [as CN] | monthly average | ≤ 140 ug/L | all year | 005 |
| Cyanide, total [as CN] | daily maximum | ≤ 204 ug/L | all year | 005 |
| Sulfide, total [as S] | monthly average | report only (mg/L) | all year | 005 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 005 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 005 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 005 |
| Cadmium, total [as Cd] | monthly average | ≤ 4.6 ug/L | all year | 005 |
| Cadmium, total [as Cd] | daily maximum | ≤ 12.3 ug/L | all year | 005 |
| Copper, total [as Cu] | monthly average | ≤ 25.7 ug/L | all year | 005 |
| Copper, total [as Cu] | daily maximum | ≤ 40 ug/L | all year | 005 |
| Lead, total [as Pb] | monthly average | ≤ 14.8 ug/L | all year | 005 |
| Lead, total [as Pb] | daily maximum | ≤ 378.7 ug/L | all year | 005 |
| Thallium, total [as Tl] | monthly average | ≤ .47 ug/L | all year | 005 |
| Thallium, total [as Tl] | daily maximum | ≤ 1.31 ug/L | all year | 005 |
| Zinc, total [as Zn] | monthly average | ≤ 375 ug/L | all year | 005 |
| Zinc, total [as Zn] | daily maximum | ≤ 375 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 | daily maximum | report only (MGD) | all year | 005 |
| Hydrogen sulfide, unionized | monthly average | ≤ 2 ug/L | all year | 005 |
| Hydrogen sulfide, unionized | daily maximum | ≤ 4 ug/L | all year | 005 |
| Mercury, total [as Hg] | monthly average | ≤ 51 ng/L | all year | 005 |
| Mercury, total [as Hg] | daily maximum | ≤ 168 ng/L | all year | 005 |
| Length of longest pH excursion | instantaneous maximum | ≤ 60 min | all year | 005 |
| pH range excursions, monthly total accum | monthly maximum | = 446 min | all year | 005 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | daily minimum | report only (%) | all year | 005 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average | ≤ 25 % | all year | 005 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 40 % | all year | 005 |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily minimum | report only (%) | all year | 005 |
Cited limits by parameter: South Carolina'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/SC0040479 · MCP: https://passage-data.com/mcp