Clean Water Act discharge permit · NPDES SD0021610
USNPS - MT. RUSHMORE NATIONAL MEMORIAL, Keystone, SD: NPDES SD0021610 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
USNPS - MT. RUSHMORE NATIONAL MEMORIAL, held by USNPS - Mt. Rushmore National Monument, holds NPDES permit SD0021610, which discharges to Unnamd Trb,Lafferty Glch,Battle Crk. EPA’s file records it issued September 26, 2007 and expiring September 30, 2012. 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 | USNPS - MT. RUSHMORE NATIONAL MEMORIAL |
|---|---|
| Permittee as filed | USNPS - Mt. Rushmore National Monument |
| NPDES ID | SD0021610 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Federal facility |
| Program | Publicly owned treatment works |
| Issued | September 26, 2007 |
| Expiration date | September 30, 2012 |
| Issuing agency | SDDENR |
| Address | Keystone, SD 57751 |
| Receiving water | UNNAMD TRB,LAFFERTY GLCH,BATTLE CRK |
| Subwatershed | Grizzly Bear Creek-Battle Creek (HUC 101201090801) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler SDR000002428 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 13Pollutants on file
- 12Under a numeric limit
- 12With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 5 | 24 | 15 | February 28, 2026 | 1,100% over the limit |
| Solids, total suspended | 5 | 18 | 10 | April 30, 2020 | 2,600% over the limit |
| Nitrogen, ammonia total [as N] | 14 | 9 | 7 | August 31, 2020 | 620% over the limit |
| pH | 2 | 6 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 5 | 0 | ||
| BOD, 5-day, percent removal | 1 | 5 | 0 | ||
| Solids, suspended percent removal | 1 | 5 | 0 | ||
| Temperature, water deg. centigrade | 2 | 3 | 0 | ||
| Flow rate | 2 | 2 | 0 | ||
| Oil and grease, hexane extr method | 1 | 1 | 0 | ||
| Oil and grease visual | 1 | 1 | 0 | ||
| Nitrogen, total [as N] | 0 | 1 | 0 | ||
| Coliform, fecal general | 2 | 0 | 0 |
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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 21, 2024 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | ST6 |
| March 15, 2024 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, SD0021610.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 SD0021610 there.
Nearby on the register
- Discharge permits in Keystone
- Every permit record in Keystone, 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.