Clean Water Act discharge permit · NPDES AZMS79746
YOUNG BLOCK CO, Tucson, AZ: NPDES AZMS79746 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
YOUNG BLOCK CO, held by Oldcastle Apg West, Inc., holds NPDES permit AZMS79746. EPA’s file records it issued January 3, 2020 and expiring December 30, 2024. 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 YOUNG BLOCK CO: its NPDES ID, its permit type and status, its dates, its address in Tucson, Arizona. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZMS79746.
Identity
| Facility as filed | YOUNG BLOCK CO |
|---|---|
| Permittee as filed | Oldcastle Apg West, Inc. |
| NPDES ID | AZMS79746 |
| 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 | January 3, 2020 |
| Expiration date | December 30, 2024 |
| Address | Tucson, AZ 85705 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Arroyo Chico-Santa Cruz River (HUC 150503010906) |
Cited to the EPA ICIS-NPDES permit file (ECHO 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 AZMS79746.
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 AZMS79746.
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, AZMS79746.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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 AZMS79746 there.
Nearby on the register
- Discharge permits in Tucson
- Every permit record in Tucson, A to Z
- Discharge permits in Arizona
- Every permit record in Arizona, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.