Passage Data · Check a report · Use it from your AI
Construction Sand And Gravel, Parker, South Dakota. NPDES permit SD0028643 expired Nov 30, 2025; its limits still apply. Last 12 months: no values over a limit, 2 of 22 reports late. 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 | report only (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 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 001 |
| Floating solids, waste or visible foam-visual | value | report only (abst=0;prst=1) | all year | 001 |
| Flow, total | total | report only (Mgal) | all year | 001 |
| Suspended Solids, Total | 30-day average | ≤ 90 mg/L | all year | 001 |
| Suspended Solids, Total | daily maximum | ≤ 158 mg/L | all year | 001 |
| Duration of discharge | total | report only (d) | all year | 001 |
| Oil and grease visual | value | report only (abst=0;prst=1) | all year | 001 |
| Temperature, water deg. fahrenheit | 30-day average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | report only (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 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 90 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 158 mg/L | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | ≤ 10 mg/L | all year | 002 |
| Floating solids, waste or visible foam-visual | value | report only (abst=0;prst=1) | all year | 002 |
| Flow, total | total | report only (Mgal) | all year | 002 |
| Duration of discharge | total | report only (d) | all year | 002 |
| Oil and grease visual | value | report only (abst=0;prst=1) | all year | 002 |
Cited limits by parameter: South Dakota's rules and the federal ones.
Same industry: the 6 Mining and Quarrying of Nonmetallic Minerals permits in South Dakota.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/SD0028643 · MCP: https://passage-data.com/mcp