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Clean Water Act discharge permit · NPDES COR901624

NLIGHT DEFENSE SYSTEMS, Longmont, CO: NPDES COR901624 discharge permit, effluent exceedances, inspections, penalties

NLIGHT DEFENSE SYSTEMS, held by Nutronics Inc, holds NPDES permit COR901624, which discharges to Dry Creek To St Vrain River. EPA’s file records it issued November 28, 2022 and expiring December 31, 2025. 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 NLIGHT DEFENSE SYSTEMS: its NPDES ID, its permit type and status, its dates, its address in Longmont, Colorado, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR901624.

Identity

Facility as filedNLIGHT DEFENSE SYSTEMS
Permittee as filedNutronics Inc
NPDES IDCOR901624
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedNovember 28, 2022
Expiration dateDecember 31, 2025
AddressLongmont, CO 80501
Receiving waterDry Creek to St Vrain River
SubwatershedDry Creek (HUC 101900050702)
SIC3827 – Optical Instruments And Lenses

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

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR901624.

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 COR901624.

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, COR901624.

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  • One watershed — $2,990/year
  • One state — $4,990/year
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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 COR901624 there.

Nearby on the register

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

What this page shows

NLIGHT DEFENSE SYSTEMS is one of 40 storm water industrial permits on EPA's NPDES register in Boulder County, and it is among 10 NPDES permits in the Dry Creek subwatershed, this one included. Of those 40 Boulder County storm water industrial permits, 97.5% were issued earlier than this one, and 25.0% have a violation on file, while this permit has no pollutants under a numeric limit and no effluent exceedances.