Clean Water Act discharge permit · NPDES SD0028606
EMPIRICAL TECHNOLOGY, Dakota Dunes, SD: NPDES SD0028606 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
EMPIRICAL TECHNOLOGY, held by Empirical Technology, holds NPDES permit SD0028606, which discharges to Big Sioux River. EPA’s file records it issued January 1, 2020 and expiring December 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | EMPIRICAL TECHNOLOGY |
|---|---|
| Permittee as filed | Empirical Technology |
| NPDES ID | SD0028606 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 1, 2020 |
| Expiration date | December 31, 2024 |
| Issuing agency | SDDANR |
| Address | Dakota Dunes, SD 57049 |
| Receiving water | Big Sioux River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Big Sioux River (HUC 101702032507) |
| NAICS | 311611 – Animal [Except Poultry] Slaughtering |
| SIC | 2011 – Meat Packing Plants |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 7With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Temperature, water deg. fahrenheit | 2 | 4 | 0 | ||
| Flow rate | 2 | 4 | 0 | ||
| Conductivity | 2 | 4 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Solids, total suspended | 2 | 4 | 0 | ||
| Solids, total dissolved | 2 | 4 | 0 | ||
| Flow, total | 1 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES SD0028606.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES SD0028606.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID SD0028606 there.
Nearby on the register
- Discharge permits in Dakota Dunes
- Every permit record in Dakota Dunes, A to Z
- Discharge permits in South Dakota
- Every permit record in South Dakota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.