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Clean Water Act discharge permit · NPDES VAR10U463

WESTFAX LOTS 4 & 5A, Chantilly, VA: NPDES VAR10U463 discharge permit, effluent exceedances, inspections, penalties

WESTFAX LOTS 4 & 5A, held by WESTFAX PROPERTY OWNER A, LP, holds NPDES permit VAR10U463, which discharges to Cub Run. EPA’s file records it issued July 1, 2024 and expiring June 30, 2029. 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.

What the register holds for WESTFAX LOTS 4 & 5A: its NPDES ID, its permit type and status, its dates, its address in Chantilly, Virginia, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES VAR10U463.

Identity

Facility as filedWESTFAX LOTS 4 & 5A
Permittee as filedWESTFAX PROPERTY OWNER A, LP
NPDES IDVAR10U463
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJuly 1, 2024
Expiration dateJune 30, 2029
Issuing agencyVA DEQ
AddressChantilly, VA 20151
Receiving waterCub Run
SubwatershedCub Run (HUC 020700100704)

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 VAR10U463.

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 VAR10U463.

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, VAR10U463.

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How often?
  • 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 VAR10U463 there.

Nearby on the register

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

What this page shows

The WESTFAX LOTS 4 & 5A storm water construction permit is one of 61 such permits on EPA's NPDES register in Chantilly, and 65.6% of those 61 permits were issued earlier than it. It sits within the Cub Run subwatershed, which holds 107 NPDES permits, this one included. Among the Chantilly storm water construction permits, 0.0% have a violation on file, and this permit has no pollutants under a numeric limit and no effluent exceedances recorded.