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Clean Water Act discharge permit · NPDES COR430921

*DUP* HOLCIM - TIER 2 *DUP*, Florence, CO: NPDES COR430921 discharge permit, effluent exceedances, inspections, penalties

*DUP* HOLCIM - TIER 2 *DUP*, held by Amrize Cement Inc, holds NPDES permit COR430921. EPA’s file records it issued June 29, 2026 and expiring March 31, 2029.

*DUP* HOLCIM - TIER 2 *DUP*, Florence, Colorado: Coverage under a general permit COR430921, held by Amrize Cement Inc; Effective; issued June 29, 2026, term to March 31, 2029.

Other permits held by Amrize Cement Inc

*DUP* HOLCIM - TIER 2 *DUP* among its neighbors

EPA’s permit file holds 11 discharge permits in the Willow Spring Creek-Arkansas River subwatershed (HUC 110200020603), COR430921 among them. Its county holds 94, 1 of them major permits; COR430921 is a minor permit.

Other permits in the Willow Spring Creek-Arkansas River subwatershed (HUC 110200020603)

  • *DUP* HOLCIM - TIER 2 *DUP*, Florence: COR425697, minor permit, permit term to March 31, 2029
  • PENROSE AUTO SALVAGE, Penrose: COR901564, minor permit, discharging to unnamed tributary to Arkansas River, permit term to December 31, 2025
  • PENROSE FACILITY, Penrose: COR900026, minor permit, discharging to Bear Creek - Arkansas River, permit term to June 30, 2017
  • PENROSE RANCH PIT, Florence: COG501749, minor permit, discharging to unnamed tributary - Arkansas River, permit term to December 31, 2021
  • PENROSE WWTF, Penrose: CO0046523, minor permit, discharging to BEAR CREEK, permit term to December 31, 2015
  • PORTLAND CEMENT PLANT, Florence: COR900923, minor permit, discharging to the Arkansas River, permit term to June 30, 2017
  • PORTLAND PLANT, Florence: CO0000671, minor permit, discharging to ARKANSAS RIVER, permit term to June 30, 2016
  • RANCH LAND ROCK PIT 2, Pueblo: COG501895, minor permit, discharging to Minnequa Canal - Salt Creek, permit term to December 31, 2021
  • SH 120 BRIDGE @ HOLCIM, Fremont County: COG074285, minor permit, discharging to Arkansas River, permit term to September 30, 2013
  • THERMO FLUIDS PENROSE, Penrose: COR900947, minor permit, discharging to Arkansas River, permit term to June 30, 2017

What the register holds for *DUP* HOLCIM - TIER 2 *DUP*: its NPDES ID, its permit type and status, its dates, its address in Florence, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR430921.

Identity

Facility as filed*DUP* HOLCIM - TIER 2 *DUP*
Permittee as filedAmrize Cement Inc
NPDES IDCOR430921
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJune 29, 2026
Expiration dateMarch 31, 2029
AddressFlorence, CO 80906
SubwatershedWillow Spring Creek-Arkansas River (HUC 110200020603)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR430921.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES COR430921.

Inspections

EPA’s inspection file holds no inspection for NPDES COR430921.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES COR430921.

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Nearby on the register

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

What this page shows

The *DUP* HOLCIM - TIER 2 *DUP* general permit coverage in Florence, Fremont County, Colorado, is one of 67 general permit coverages on EPA's NPDES register in that county, and 25.4% of those 67 carry a violation on file. Among the 11 NPDES permits in the Willow Spring Creek-Arkansas River subwatershed, this one is grouped with its neighbors, and it has no pollutants under a numeric limit and no pollutants with an effluent exceedance.