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Clean Water Act discharge permit · NPDES VAG406602

NOVA POWER SYSTEMS, Haymarket, VA: NPDES VAG406602 discharge permit, effluent exceedances, inspections, penalties

NOVA POWER SYSTEMS, held by Mantis Enterprises Limited Liability Company, holds NPDES permit VAG406602, which discharges to Upper Bull Run. EPA’s file records it issued August 2, 2021 and expiring July 31, 2026.

NOVA POWER SYSTEMS, Haymarket, Virginia: Coverage under a general permit VAG406602, held by Mantis Enterprises Limited Liability Company; Administratively continued (past its expiration date and still in force until reissued); issued August 2, 2021, term to July 31, 2026, by Virginia; discharges to Upper Bull Run.

  • pH: 2 limits, 10 violations of any kind, 0 effluent exceedances.
  • BOD, 5-day, 20 deg. C: 1 limit, 5 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 1 limit, 5 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 1 limit, 5 violations of any kind, 0 effluent exceedances.
  • E. coli: 1 limit, 5 violations of any kind, 0 effluent exceedances.

NOVA POWER SYSTEMS among its neighbors

EPA’s permit file holds 52 discharge permits in the Upper Bull Run subwatershed (HUC 020700100701), VAG406602 among them.

Other permits in the Upper Bull Run subwatershed (HUC 020700100701)

Identity

Facility as filedNOVA POWER SYSTEMS
Permittee as filedMantis Enterprises Limited Liability Company
NPDES IDVAG406602
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedAugust 2, 2021
Expiration dateJuly 31, 2026
Issuing agencyVirginia
AddressHaymarket, VA 20169
Receiving waterUpper Bull Run
SubwatershedUpper Bull Run (HUC 020700100701)

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
pH2100
BOD, 5-day, 20 deg. C150
Solids, total suspended150
Flow, in conduit or thru treatment plant150
E. coli150

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES VAG406602.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES VAG406602.

Inspections

EPA’s inspection file holds no inspection for NPDES VAG406602.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES VAG406602.

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Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES VAG406602 held by NOVA POWER SYSTEMS in Haymarket, VA, with Mantis Enterprises Limited Liability Company as permittee and discharge to Upper Bull Run (HUC 020700100701). The page lists a permit status of administratively continued, a discharger class of 5, and 5 pollutants on file, all 5 under a numeric limit, with 0 pollutants showing an effluent exceedance.