Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES COR10F0DY

GSA DENVER GEOTHERMAL LOOP, Lakewood, CO: NPDES COR10F0DY discharge permit, effluent exceedances, inspections, penalties

GSA DENVER GEOTHERMAL LOOP, held by Ameresco, Inc., holds NPDES permit COR10F0DY. EPA’s file records it issued July 6, 2026 and expiring February 16, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for GSA DENVER GEOTHERMAL LOOP: its NPDES ID, its permit type and status, its dates, its address in Lakewood, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR10F0DY.

Identity

Facility as filedGSA DENVER GEOTHERMAL LOOP
Permittee as filedAmeresco, Inc.
NPDES IDCOR10F0DY
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJuly 6, 2026
Expiration dateFebruary 16, 2027
Issuing agencyU.S. EPA
AddressLakewood, CO 80226
Subwatershed101900020904 (HUC 101900020904)

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 COR10F0DY.

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 COR10F0DY.

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, COR10F0DY.

Start the watch

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 COR10F0DY there.

Nearby on the register

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

What this page shows

The GSA DENVER GEOTHERMAL LOOP permit, held by Ameresco, Inc., is one of 3 storm water construction permits on the NPDES register in Lakewood, Colorado, and it is one of 192 NPDES permits within the 101900020904 subwatershed. The permit records no pollutants under a numeric limit and no pollutants with an effluent exceedance, each counted as 0.