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Clean Water Act discharge permit · NPDES SCR10ZH18

MCMAHAN EVENT CENTER, St. Matthews, SC: NPDES SCR10ZH18 discharge permit, effluent exceedances, inspections, penalties

MCMAHAN EVENT CENTER, held by JJ McMahan, holds NPDES permit SCR10ZH18. EPA’s file records it issued March 3, 2025 and expiring March 2, 2030. 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 MCMAHAN EVENT CENTER: its NPDES ID, its permit type and status, its dates, its address in St. Matthews, South Carolina. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES SCR10ZH18.

Identity

Facility as filedMCMAHAN EVENT CENTER
Permittee as filedJJ McMahan
NPDES IDSCR10ZH18
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedMarch 3, 2025
Expiration dateMarch 2, 2030
Issuing agencyState
AddressSt. Matthews, SC 29135
SubwatershedUpper Caw Caw Swamp-North Fork Edisto River (HUC 030502030305)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES SCR10ZH18.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES SCR10ZH18.

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 SCR10ZH18 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The McMahan Event Center storm water construction permit, NPDES ID SCR10ZH18, is one of 44 such permits in Calhoun County, and 0.0% of those 44 permits have a violation on file. Among all 44 Calhoun County storm water construction permits, this one, issued March 3, 2025, is one of the 43.2% with an earlier issue date than this permit, and it is one of 11 NPDES permits in the Upper Caw Caw Swamp-North Fork Edisto River subwatershed, this one included. The permit records no pollutants under a numeric limit and no effluent exceedances.