Clean Water Act discharge permit · NPDES VAR050174

MERSEN USA ACE CORP, Salem, VA: NPDES VAR050174 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
5Pollutants under a numeric limit
0Pollutants with an effluent exceedance

MERSEN USA ACE CORP, held by Mersen USA ACE Corp., holds NPDES permit VAR050174, which discharges to Mason Creek. EPA’s file records it issued July 1, 2019 and expiring June 30, 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	MERSEN USA ACE CORP
Permittee as filed	Mersen USA ACE Corp.
NPDES ID	VAR050174
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	July 1, 2019
Expiration date	June 30, 2024
Issuing agency	VA DEQ
Address	Salem, VA 24153
Receiving water	Mason Creek
Subwatershed	Mason Creek (HUC 030101010302)
NAICS	332410 – Power Boiler and Heat Exchanger Manufacturing
SIC	3443 – Fabricated Plate Work (Boiler Shops)
Other EPA IDs (FRS)	ICIS-AIR source VA0000005177500184

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

5Pollutants on file
5Under a numeric limit
4With 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
Solids, total suspended	8	4
Zinc, total recoverable	4	4
Aluminum, total recoverable	4	4
Copper, total recoverable	4	4
Iron, total recoverable	4	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES VAR050174.

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 VAR050174.

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.

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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 VAR050174 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers Clean Water Act discharge permit NPDES VAR050174, held by MERSEN USA ACE CORP in Salem, VA, which discharges to Mason Creek within the Mason Creek subwatershed (HUC 030101010302). The page lists a minor discharger class, 0 pollutants under a numeric limit, and 0 pollutants with an effluent exceedance, with the permit shown as administratively continued after its June 30, 2024 expiration.