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 COG501776

MUNROE GYPSUM QUARRY, Livermore, CO: NPDES COG501776 discharge permit, effluent exceedances, inspections, penalties

MUNROE GYPSUM QUARRY, held by Pete Lien and Sons Inc, holds NPDES permit COG501776, which discharges to Unnamed Tributary To Boxelder Creek. EPA’s file records it issued April 7, 2017 and expiring December 31, 2021. 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 MUNROE GYPSUM QUARRY: its NPDES ID, its permit type and status, its dates, its address in Livermore, Colorado, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COG501776.

Identity

Facility as filedMUNROE GYPSUM QUARRY
Permittee as filedPete Lien and Sons Inc
NPDES IDCOG501776
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
IssuedApril 7, 2017
Expiration dateDecember 31, 2021
AddressLivermore, CO 80535
Receiving waterunnamed tributary to Boxelder Creek
SubwatershedUpper Boxelder Creek (HUC 101900070901)
SIC1499 – Miscellaneous Nonmetallic Minerals

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 COG501776.

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 COG501776.

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, COG501776.

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 COG501776 there.

Nearby on the register

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

What this page shows

The MUNROE GYPSUM QUARRY is one of 322 general permit coverages in Larimer County, and 17.4% of those coverages carry an earlier issue date than this one. Within the Upper Boxelder Creek subwatershed, it is one of 4 NPDES permits, this one included. The permit records no pollutant under a numeric limit and no effluent exceedance, both counted as 0.