NPDES SDR10P5Y8 · Clean Water Act
NORTHWESTERN ENERGY SD15 REROUTE, Clear Lake, SD: NPDES SDR10P5Y8 discharge permit, effluent exceedances, inspections, penalties
NORTHWESTERN ENERGY SD15 REROUTE, Clear Lake, South Dakota: General permit coverage SDR10P5Y8, held by NorthWestern Energy; Construction stormwater; Effective; issued May 27, 2026, term to October 31, 2028, by SDDANR.
South Dakota holds 1,358 Construction stormwater coverages of this permit type in EPA’s file; 1,180 were issued before SDR10P5Y8.
Coverages issued nearest SDR10P5Y8
- 2026-05-26: MIDWEST RAILCAR REPAIR CONCRETE SURFACING IMPROVEMENTS, Brandon: SDR10P5X2, held by Midwest Railcar Repair, Inc.
- 2026-05-26: THE PINES AT ELKHORN RIDGE, Spearfish: SDR10P5X5, held by HME Companies, LLC
- 2026-05-26: STR 42-1415-0577 DAYTON TOWNSHIP, Harrisburg: SDR10P5XY, held by Katzer Concrete
- 2026-05-27: LEGACY BUSINESS PARK, Brookings: SDR10P5WV, held by Legacy Storage Condos, LLC
- 2026-05-27: KIMBALL MAIN STREET ROADWAY AND UTILITY IMPROVEMENTS, Kimball: SDR10P5WX, held by City of Kimball
- 2026-05-27: BOX CULVERT PROJECT BRF 6308(00)26-2, Castlewood: SDR10P5YB, held by BX Civil & Construction
- 2026-05-28: 38 NORTH DEVELOPMENT, Hartford: SDR10P5V6, held by 38 NORTH LLC
- 2026-05-28: PCN 08K8, Plankinton: SDR10P5XO, held by SD Department of Transportation
- 2026-05-28: PCN 067V, Fairfax: SDR10P5XP, held by SD Department of Transportation
- 2026-05-28: PCN 08LL, Spearfish: SDR10P5XQ, held by SD Department of Transportation
NORTHWESTERN ENERGY SD15 REROUTE among its neighbors
1 discharge permits are in the Coteau Lakes subwatershed (HUC 101702020401); SDR10P5Y8 is one.
Identity
| Facility | NORTHWESTERN ENERGY SD15 REROUTE |
|---|---|
| Permittee | NorthWestern Energy |
| NPDES ID | SDR10P5Y8 |
| Status | Effective |
| Type | General permit coverage |
| Class | Minor |
| Facility type | Non-POTW |
| Program | Construction stormwater |
| Issued | May 27, 2026 |
| Expires | October 31, 2028 |
| Agency | SDDANR |
| Address | Clear Lake, SD 57226 |
| Subwatershed | Coteau Lakes (HUC 101702020401) |
NPDES SDR10P5Y8: effluent limits and exceedances
NORTHWESTERN ENERGY SD15 REROUTE (NPDES SDR10P5Y8): 0 pollutants on file, 0 limited; 0 with a violation of any kind, 0 with an exceedance.
NPDES SDR10P5Y8: no pollutant row on file.
NPDES SDR10P5Y8: inspections, violations and enforcement
NPDES SDR10P5Y8 (NORTHWESTERN ENERGY SD15 REROUTE): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES SDR10P5Y8
NPDES SDR10P5Y8: one email when its EPA record changes — $99/month.
Permits near NPDES SDR10P5Y8
NPDES SDR10P5Y8: 0 pollutant rows, 0 dated events; ICIS-NPDES download, loaded September 15, 2026.