Clean Water Act discharge permit · NPDES CAZ484306
CALIBER DIESEL MACHINE SHOP, Ontario, CA: NPDES CAZ484306 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CALIBER DIESEL MACHINE SHOP, held by Caliber Diesel Machine Shop, holds NPDES permit CAZ484306. EPA’s file records it issued April 5, 2017 and expiring June 30, 2020. 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 CALIBER DIESEL MACHINE SHOP: its NPDES ID, its permit type and status, its dates, its address in Ontario, California. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CAZ484306.
Identity
| Facility as filed | CALIBER DIESEL MACHINE SHOP |
|---|---|
| Permittee as filed | Caliber Diesel Machine Shop |
| NPDES ID | CAZ484306 |
| 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 |
| Program | Industrial stormwater |
| Issued | April 5, 2017 |
| Expiration date | June 30, 2020 |
| Issuing agency | CA Waterboards |
| Address | Ontario, CA 91761 |
| Subwatershed | Lower Cucamonga Creek (HUC 180702030705) |
| Other EPA IDs (FRS) | RCRA handler CAL000450719 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
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 CAZ484306.
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 CAZ484306.
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, CAZ484306.
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 CAZ484306 there.
Nearby on the register
- Discharge permits in Ontario
- Every permit record in Ontario, A to Z
- Discharge permits in California
- Every permit record in California, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.