Clean Water Act discharge permit · NPDES COR422002

CALHAN HIGHWAY BRIDGE REPLACEMENT, Unincorporated, CO: NPDES COR422002 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

CALHAN HIGHWAY BRIDGE REPLACEMENT, held by HEI Civil, holds NPDES permit COR422002. EPA’s file records it issued November 6, 2023 and expiring March 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.

What the register holds for CALHAN HIGHWAY BRIDGE REPLACEMENT: its NPDES ID, its permit type and status, its dates, its address in Unincorporated, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR422002.

Identity

Facility as filed	CALHAN HIGHWAY BRIDGE REPLACEMENT
Permittee as filed	HEI Civil
NPDES ID	COR422002
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	November 6, 2023
Expiration date	March 31, 2024
Issuing agency	STA
Address	Unincorporated, CO 80808
Receiving water impaired	303(D) Listed
Subwatershed	Ramah Reservoir-Big Sandy Creek (HUC 110200110102)
SIC	1611 – Highway And Street Construction

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

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR422002.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES COR422002.

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, COR422002.

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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 COR422002 there.

Nearby on the register

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

The CALHAN HIGHWAY BRIDGE REPLACEMENT permit is one of 15 general permit coverages on EPA's NPDES register in Unincorporated, Colorado, and 0.0% of those coverages in the city have a violation on file. Among the 5 NPDES permits in the Ramah Reservoir-Big Sandy Creek subwatershed, this one is set against 13.3% of Unincorporated's general permit coverages that were issued earlier than it. The permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance.