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Clean Water Act discharge permit · NPDES AZC113823

US-191 COCHISE RAILROAD OVERPASS, AZ: NPDES AZC113823 discharge permit, effluent exceedances, inspections, penalties

US-191 COCHISE RAILROAD OVERPASS, held by Sema Construction, Inc., holds NPDES permit AZC113823, which discharges to Willcox Playa | 32°9 50.022'/11°48 21.58' In. EPA’s file records it issued December 9, 2025 and expiring August 28, 2030. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for US-191 COCHISE RAILROAD OVERPASS: its NPDES ID, its permit type and status, its dates, its address, Arizona, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZC113823.

Identity

Facility as filedUS-191 COCHISE RAILROAD OVERPASS
Permittee as filedSema Construction, Inc.
NPDES IDAZC113823
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedDecember 9, 2025
Expiration dateAugust 28, 2030
Issuing agencyADEQ
AddressAZ 91316
Receiving waterWillcox Playa | 32°9 50.022'/11°48 21.58' IN
SubwatershedI T Draw-Willcox Playa (HUC 150502010706)

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 AZC113823.

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 AZC113823.

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, AZC113823.

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  • 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 AZC113823 there.

Nearby on the register

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