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Clean Water Act discharge permit · NPDES VA0089796

THE NATURE CONSERVANCY, Arlington, VA: NPDES VA0089796 discharge permit, effluent exceedances, inspections, penalties

THE NATURE CONSERVANCY, held by NATURE CONSERVANCY, THE, holds NPDES permit VA0089796, which discharges to Potomac River-Fourmile Run. EPA’s file records it issued January 29, 2019 and expiring January 31, 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 filedTHE NATURE CONSERVANCY
Permittee as filedNATURE CONSERVANCY, THE
NPDES IDVA0089796
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJanuary 29, 2019
Expiration dateJanuary 31, 2024
Issuing agencyVA DEQ
AddressArlington, VA 22203
Receiving waterPotomac River-Fourmile Run
SubwatershedFourmile Run-Potomac River (HUC 020700100301)
NAICS562910 – Remediation Services
SIC4959 – Sanitary Services

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

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
Tetrachloroethylene111December 31, 2024140% over the limit
pH200
Flow, in conduit or thru treatment plant200
Dichloromethane100
Carbon tetrachloride100
Chloroform100
Toluene100
Benzene100
Ethylbenzene100
1,1-Dichloroethylene100
1,1,1-Trichloroethane100
1,2-Dichloroethane, total weight100
1,2-Dichlorobenzene100
Vinyl chloride100
Trichloroethylene100
cis-1,2-Dichloroethylene100
Organics-tot voltile [NJAC reg.7:23-17e]100
Xylene [mix of m+o+p]100
trans-1,2-Dichloroethylene100

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 VA0089796.

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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Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES VA0089796, held by THE NATURE CONSERVANCY in Arlington, VA, which discharges to Potomac River-Fourmile Run and is classed as a Minor discharger. The permit is listed as administratively continued, with one pollutant under a numeric limit and 1 pollutant with an effluent exceedance, and the file shows it was issued January 29, 2019 and expired January 31, 2024.