Clean Water Act discharge permit · NPDES SCR10Z988
MOUNT PLEASANT REGIONAL AIRPORT - T-HANGER DEVELOPMENT, Mt. Pleasant, SC: NPDES SCR10Z988 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MOUNT PLEASANT REGIONAL AIRPORT - T-HANGER DEVELOPMENT, held by Nathan Yokoyama, Charleston County Aviation Authority, holds NPDES permit SCR10Z988. EPA’s file records it issued October 28, 2021 and expiring October 27, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for MOUNT PLEASANT REGIONAL AIRPORT - T-HANGER DEVELOPMENT: its NPDES ID, its permit type and status, its dates, its address in Mt. Pleasant, South Carolina. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES SCR10Z988.
Identity
| Facility as filed | MOUNT PLEASANT REGIONAL AIRPORT - T-HANGER DEVELOPMENT |
|---|---|
| Permittee as filed | Nathan Yokoyama, Charleston County Aviation Authority |
| NPDES ID | SCR10Z988 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | October 28, 2021 |
| Expiration date | October 27, 2026 |
| Issuing agency | State |
| Address | Mt. Pleasant, SC 29466 |
| Subwatershed | Guerin Creek (HUC 030502010401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES SCR10Z988.
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 SCR10Z988.
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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- One state — $4,990/year
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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 SCR10Z988 there.
Nearby on the register
- Discharge permits in Mt. Pleasant
- Every permit record in Mt. Pleasant, A to Z
- Discharge permits in South Carolina
- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.