Clean Water Act discharge permit · NPDES AZI108648
TRIANGLE INDUSTRIAL CORP, Tucson, AZ: NPDES AZI108648 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
TRIANGLE INDUSTRIAL CORP, held by T3 Engineered Products, Inc. Dba Triangle Industrial Corporation, holds NPDES permit AZI108648, which discharges to Santa Cruz River | Santa Cruz River West Branc. EPA’s file records it issued January 16, 2025 and expiring January 15, 2030. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for TRIANGLE INDUSTRIAL CORP: its NPDES ID, its permit type and status, its dates, its address in Tucson, Arizona, its receiving water, and 4 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZI108648.
Identity
| Facility as filed | TRIANGLE INDUSTRIAL CORP |
|---|---|
| Permittee as filed | T3 Engineered Products, Inc. Dba Triangle Industrial Corporation |
| NPDES ID | AZI108648 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | January 16, 2025 |
| Expiration date | January 15, 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) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 4Pollutants on file
- 4Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Nitrite + Nitrate total [as N] | 3 | 0 | 0 | ||
| Chromium, total dry weight [as Cr] | 3 | 0 | 0 | ||
| Iron, total [as Fe] | 3 | 0 | 0 | ||
| Zinc, total [as Zn] | 3 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES AZI108648.
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 AZI108648.
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
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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 AZI108648 there.
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- Every permit record in Arizona, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.