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Noncommercial Research Organizations, Lead, South Dakota. NPDES permit SD0028134 expired Jun 30, 2012; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | 30-day average | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 75 deg F | all year | 001 |
| Flow rate | 30-day average | report only (MGD) | all year | 001 |
| Flow rate | daily maximum | report only (MGD) | all year | 001 |
| Conductivity | 30-day average | ≤ 3000 umho/cm | all year | 001 |
| Conductivity | daily maximum | ≤ 4375 umho/cm | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 8 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 10 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 17.5 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.8 mg/L | all year | 001 |
| Nitrogen, nitrate total [as N] | 30-day average | ≤ 50 mg/L | all year | 001 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 88 mg/L | all year | 001 |
| Cyanide, weak acid, dissociable | 30-day average | ≤ 5.2 ug/L | all year | 001 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ 22 ug/L | all year | 001 |
| Hardness, total [as CaCO3] | daily minimum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total recoverable | 30-day average | ≤ 150 ug/L | all year | 001 |
| Arsenic, total recoverable | daily maximum | ≤ 340 ug/L | all year | 001 |
| Selenium, total recoverable | 30-day average | ≤ 4.6 ug/L | all year | 001 |
| Selenium, total recoverable | daily maximum | ≤ 12.8 ug/L | all year | 001 |
| Selenite, Total Recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Selenite, Total Recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Nickel, total recoverable | 30-day average | ≤ 168 ug/L | all year | 001 |
| Nickel, total recoverable | daily maximum | ≤ 1520 ug/L | all year | 001 |
| Silver total recoverable | 30-day average | ≤ 41.1 ug/L | all year | 001 |
| Silver total recoverable | daily maximum | ≤ 41.1 ug/L | all year | 001 |
| Zinc, total recoverable | 30-day average | ≤ 388 ug/L | all year | 001 |
| Zinc, total recoverable | daily maximum | ≤ 388 ug/L | all year | 001 |
| Cadmium, total recoverable | 30-day average | ≤ .76 ug/L | all year | 001 |
| Cadmium, total recoverable | daily maximum | ≤ 8.7 ug/L | all year | 001 |
| Lead, total recoverable | 30-day average | ≤ 18.6 ug/L | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ 477 ug/L | all year | 001 |
| Chromium, total recoverable | 30-day average | ≤ 11 ug/L | all year | 001 |
| Chromium, total recoverable | daily maximum | ≤ 16 ug/L | all year | 001 |
| Copper, total recoverable | 30-day average | ≤ 30.5 ug/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ 52 ug/L | all year | 001 |
| Selenate, Total Recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Selenate, Total Recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Solids, total dissolved | 30-day average | ≤ 3000 mg/L | all year | 001 |
| Solids, total dissolved | daily maximum | ≤ 4375 mg/L | all year | 001 |
| Mercury, total recoverable | 30-day average | ≤ .012 ug/L | all year | 001 |
| Mercury, total recoverable | daily maximum | ≤ 1.4 ug/L | all year | 001 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 001 |
| Oil and grease visual | daily maximum | report only (N=0;Y=1) | all year | 001 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | all year | 001 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | daily maximum | ≤ 0 pass=0;fail=1 | all year | 001 |
| Temperature, water deg. fahrenheit | 30-day average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 65 deg F | all year | 002 |
| Flow rate | 30-day average | report only (MGD) | all year | 002 |
| Flow rate | daily maximum | report only (MGD) | all year | 002 |
| Conductivity | 30-day average | ≤ 3000 umho/cm | all year | 002 |
| Conductivity | daily maximum | ≤ 4375 umho/cm | all year | 002 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| pH | daily minimum | ≥ 6.6 SU | all year | 002 |
| pH | daily maximum | ≤ 8.6 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 10 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 17.5 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.8 mg/L | all year | 002 |
| Nitrogen, nitrate total [as N] | 30-day average | ≤ 50 mg/L | all year | 002 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 88 mg/L | all year | 002 |
| Cyanide, weak acid, dissociable | 30-day average | ≤ 5.2 ug/L | all year | 002 |
| Cyanide, weak acid, dissociable | daily maximum | ≤ 22 ug/L | all year | 002 |
| Hardness, total [as CaCO3] | daily minimum | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Arsenic, total recoverable | 30-day average | ≤ 150 ug/L | all year | 002 |
| Arsenic, total recoverable | daily maximum | ≤ 340 ug/L | all year | 002 |
| Selenium, total recoverable | 30-day average | ≤ 4.6 ug/L | all year | 002 |
| Selenium, total recoverable | daily maximum | ≤ 12.8 ug/L | all year | 002 |
| Selenite, Total Recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Selenite, Total Recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Nickel, total recoverable | 30-day average | ≤ 168 ug/L | all year | 002 |
| Nickel, total recoverable | daily maximum | ≤ 1520 ug/L | all year | 002 |
| Silver total recoverable | 30-day average | ≤ 41.1 ug/L | all year | 002 |
| Silver total recoverable | daily maximum | < 41.1 ug/L | all year | 002 |
| Zinc, total recoverable | 30-day average | ≤ 388 ug/L | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ 388 ug/L | all year | 002 |
| Cadmium, total recoverable | 30-day average | ≤ .76 ug/L | all year | 002 |
| Cadmium, total recoverable | daily maximum | ≤ 8.7 ug/L | all year | 002 |
| Lead, total recoverable | 30-day average | ≤ 18.6 ug/L | all year | 002 |
| Lead, total recoverable | daily maximum | ≤ 477 ug/L | all year | 002 |
| Chromium, total recoverable | 30-day average | ≤ 11 ug/L | all year | 002 |
| Chromium, total recoverable | daily maximum | ≤ 16 ug/L | all year | 002 |
| Copper, total recoverable | 30-day average | ≤ 30.5 ug/L | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ 52 ug/L | all year | 002 |
| Selenate, Total Recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Selenate, Total Recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Solids, total dissolved | 30-day average | ≤ 3000 mg/L | all year | 002 |
| Solids, total dissolved | daily maximum | ≤ 4375 mg/L | all year | 002 |
| Mercury, total recoverable | 30-day average | ≤ .012 ug/L | all year | 002 |
| Mercury, total recoverable | daily maximum | ≤ 1.4 ug/L | all year | 002 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 002 |
| Oil and grease visual | daily maximum | report only (N=0;Y=1) | all year | 002 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | all year | 002 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | daily maximum | ≤ 0 pass=0;fail=1 | all year | 002 |
| Temperature, water deg. fahrenheit | 30-day average | report only (deg F) | all year | MTL |
| Temperature, water deg. fahrenheit | 30-day average | report only (deg F) | all year | MTL |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | MTL |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | MTL |
| Conductivity | 30-day average | report only (umho/cm) | all year | MTL |
| Conductivity | 30-day average | report only (umho/cm) | all year | MTL |
| Conductivity | daily maximum | report only (umho/cm) | all year | MTL |
| Conductivity | daily maximum | report only (umho/cm) | all year | MTL |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | MTL |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | MTL |
| pH | daily minimum | report only (SU) | all year | MTL |
| pH | daily minimum | report only (SU) | all year | MTL |
| pH | daily maximum | report only (SU) | all year | MTL |
| pH | daily maximum | report only (SU) | all year | MTL |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | MTL |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | MTL |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | MTL |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | MTL |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | all year | MTL |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | all year | MTL |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | MTL |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | MTL |
| Nitrogen, nitrate total [as N] | 30-day average | report only (mg/L) | all year | MTL |
| Nitrogen, nitrate total [as N] | 30-day average | report only (mg/L) | all year | MTL |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | MTL |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | MTL |
| Cyanide, weak acid, dissociable | 30-day average | report only (ug/L) | all year | MTL |
| Cyanide, weak acid, dissociable | 30-day average | report only (ug/L) | all year | MTL |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | MTL |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | MTL |
| Hardness, total [as CaCO3] | 30-day average | report only (ug/L) | all year | MTL |
| Hardness, total [as CaCO3] | 30-day average | report only (mg/L) | all year | MTL |
| Hardness, total [as CaCO3] | daily maximum | report only (ug/L) | all year | MTL |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | MTL |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Selenium, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Selenium, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Selenite, Total Recoverable | 30-day average | report only (mg/L) | all year | MTL |
| Selenite, Total Recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Selenite, Total Recoverable | daily maximum | report only (mg/L) | all year | MTL |
| Selenite, Total Recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Nickel, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Nickel, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Silver total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Silver total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Zinc, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Zinc, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Cadmium, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Cadmium, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Lead, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Lead, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Copper, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Copper, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Chromium, trivalent total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Chromium, trivalent total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Chromium, trivalent total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Chromium, trivalent total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Selenate, Total Recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Selenate, Total Recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Selenate, Total Recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Selenate, Total Recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | MTL |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | MTL |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | MTL |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | MTL |
| Mercury, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Mercury, total recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Chromium, hexavalent tot recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Chromium, hexavalent tot recoverable | 30-day average | report only (ug/L) | all year | MTL |
| Chromium, hexavalent tot recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Chromium, hexavalent tot recoverable | daily maximum | report only (ug/L) | all year | MTL |
| Hydrocarbons, total petroleum | daily maximum | report only (mg/L) | all year | MTL |
| Hydrocarbons, total petroleum | daily maximum | report only (mg/L) | all year | MTL |
| Oil and grease visual | daily minimum | report only (N=0;Y=1) | all year | MTL |
| Oil and grease visual | daily maximum | report only (N=0;Y=1) | all year | MTL |
Cited limits by parameter: South Dakota's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/SD0028134 · MCP: https://passage-data.com/mcp