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Clean Water Act discharge permit · NPDES AZC099158

SIRIUS AT TIMBERSKY, Flagstaff, AZ: NPDES AZC099158 discharge permit, effluent exceedances, inspections, penalties

SIRIUS AT TIMBERSKY, held by Cholla Northern Construction Llc, holds NPDES permit AZC099158. EPA’s file records it issued June 11, 2023 and expiring June 30, 2025.

SIRIUS AT TIMBERSKY, Flagstaff, Arizona: Coverage under a general permit AZC099158, held by Cholla Northern Construction Llc; Administratively continued (past its expiration date and still in force until reissued); issued June 11, 2023, term to June 30, 2025.

Other permits held by Cholla Northern Construction Llc

SIRIUS AT TIMBERSKY among its neighbors

EPA’s permit file holds 34 discharge permits in the Upper Rio de Flag subwatershed (HUC 150200150102), AZC099158 among them.

Other permits in the Upper Rio de Flag subwatershed (HUC 150200150102)

What the register holds for SIRIUS AT TIMBERSKY: its NPDES ID, its permit type and status, its dates, its address in Flagstaff, Arizona. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZC099158.

Identity

Facility as filedSIRIUS AT TIMBERSKY
Permittee as filedCholla Northern Construction Llc
NPDES IDAZC099158
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
IssuedJune 11, 2023
Expiration dateJune 30, 2025
AddressFlagstaff, AZ 86001
SubwatershedUpper Rio de Flag (HUC 150200150102)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES AZC099158.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES AZC099158.

Inspections

EPA’s inspection file holds no inspection for NPDES AZC099158.

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 AZC099158.

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, AZC099158.

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How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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Nearby on the register

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

What this page shows

Flagstaff's 37 general permit coverages have violations at 0.0%, and SIRIUS AT TIMBERSKY is counted among them. The Upper Rio de Flag subwatershed includes 34 NPDES permits, and 29.7% of Flagstaff's 37 coverages, this one included, carry an earlier issue date.