Clean Water Act discharge permit · NPDES AZC110849

GRANT WEST STORAGE, Tucson, AZ: NPDES AZC110849 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

GRANT WEST STORAGE, held by Tlw Construction, Inc., holds NPDES permit AZC110849, which discharges to Santa Cruz River | Santa Cruz River West Branc. EPA’s file records it issued August 29, 2025 and expiring August 28, 2030.

GRANT WEST STORAGE, Tucson, Arizona: Coverage under a general permit AZC110849, held by Tlw Construction, Inc.; Effective; issued August 29, 2025, term to August 28, 2030, by ADEQ; discharges to Santa Cruz River | Santa Cruz River West Branc.

Other permits held by Tlw Construction, Inc.

EL MIRAGE RV OFFICE & STORAGE: AZC099981, issued August 16, 2023
FRANK LLOYD WRIGHT STORAGE: AZC100200, issued September 5, 2023
GRANT WEST STORAGE, Tucson: AZC101256, issued December 5, 2023
CHANDLER HEIGHTS SELF STORAGE, Queen Creek: AZC102870, issued March 7, 2024
STACK STORAGE 19TH & BROADWAY, Phoenix: AZC103716, issued May 10, 2024
DESERT COVE SELF STORAGE, Scottsdale: AZC104966, issued August 22, 2024
TUCSON SPEEDWAY SELF STORAGE, Tucson: AZC105162, issued September 9, 2024
PALM VALLEY INDUSTRIAL: AZC107751, issued February 27, 2025
ELLSWORTH SELF STORAGE: AZC108505, issued April 4, 2025
U-HAUL OF MARICOPA: AZC109520, issued May 27, 2025

GRANT WEST STORAGE among its neighbors

EPA’s permit file holds 125 discharge permits in the Arroyo Chico-Santa Cruz River subwatershed (HUC 150503010906), AZC110849 among them.

Other permits in the Arroyo Chico-Santa Cruz River subwatershed (HUC 150503010906)

22ND ST FROM KINO PKWY TO TUCSON BLVD, Tucson: AZC115032, minor permit, discharging to Arroyo Chico, permit term to August 28, 2030
22ND ST FROM KINO PKWY TO TUCSON BLVD, Tucson: AZC115203, minor permit, discharging to Arroyo Chico, permit term to August 28, 2030
25432-01 FRANCISCO ELIAS ESQUER PARK, Tucson: AZC113982, minor permit, permit term to August 28, 2030
5TH STREET ROAD AND WATER IMPROVEMENTS, Tucson: AZC107753, minor permit, permit term to June 30, 2025
5TH STREET ROAD AND WATER IMPROVEMENTS, Tucson: AZC111154, minor permit, discharging to Rillito Creek | Alamo Wash - SANTA CRUZ RIVER, permit term to August 28, 2030
AGUA NUEVA WRF, Tucson: AZ0026107, major permit, permit term to June 6, 2023
AJO KINNEY P2 IMPORT, Unknown: AZC117682, minor permit, discharging to Julian Wash | Old Julian Wash - SANTA CRUZ RIV, permit term to August 28, 2030
ALLSTATE CAB COMPANY, Tucson: AZMS80677, minor permit, permit term to December 30, 2024
AMAZON FLATS PHASE 2, Unknown: AZC115391, minor permit, discharging to Santa Cruz River | Santa Cruz River West Branc, permit term to August 28, 2030
ARIZONA PETROLEUM, Tucson: AZMS68299, minor permit, permit term to May 25, 2016

What the register holds for GRANT WEST STORAGE: its NPDES ID, its permit type and status, its dates, its address in Tucson, Arizona, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZC110849.

Identity

Facility as filed	GRANT WEST STORAGE
Permittee as filed	Tlw Construction, Inc.
NPDES ID	AZC110849
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	August 29, 2025
Expiration date	August 28, 2030
Issuing agency	ADEQ
Address	Tucson, AZ 85745
Receiving water	Santa Cruz River \| Santa Cruz River West Branc
Subwatershed	Arroyo Chico-Santa Cruz River (HUC 150503010906)

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 AZC110849.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES AZC110849.

Inspections

EPA’s inspection file holds no inspection for NPDES AZC110849.

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 AZC110849.

Watch this permit

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Nearby on the register

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

This public-records page covers NPDES permit AZC110849 for GRANT WEST STORAGE in Tucson, AZ, held by Tlw Construction, Inc., with permit status Effective, a Minor discharger class, and a coverage under a general permit. The register lists zero pollutants under a numeric limit and zero pollutants with an effluent exceedance, with the permit issued August 29, 2025 and expiring August 28, 2030.