Clean Water Act discharge permit · NPDES AZ0024635
ASARCO, MISSION COMPLEX, Sahuarita, AZ: NPDES AZ0024635 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
ASARCO, MISSION COMPLEX, held by ASARCO, INC., holds NPDES permit AZ0024635. EPA’s file records it issued December 5, 2014 and expiring December 31, 2019.
ASARCO, MISSION COMPLEX, Sahuarita, Arizona: Individual permit AZ0024635, held by ASARCO, INC.; Administratively continued (past its expiration date and still in force until reissued); issued December 5, 2014, term to December 31, 2019.
- pH: 2 limits, 18 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 18 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Hardness, total [as CaCO3]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Arsenic, total recoverable: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Selenium, total recoverable: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Zinc, total recoverable: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Cadmium, total recoverable: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Lead, total recoverable: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Chromium, total recoverable: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Copper, total recoverable: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Chromium, hexavalent dissolved [as Cr]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Mercury, total recoverable: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Chemical Oxygen Demand [COD]: 1 limit, 9 violations of any kind, 0 effluent exceedances.
ASARCO, MISSION COMPLEX among its neighbors
EPA’s permit file holds 2 discharge permits in the Helmet Peak subwatershed (HUC 150503010709), AZ0024635 among them. Its county holds 188, 6 of them major permits; AZ0024635 is a minor permit.
Other permits in the Helmet Peak subwatershed (HUC 150503010709)
- ASARCO - MISSION COMPLEX, Sahuarita: AZ0024597, minor permit, permit term to July 1, 2019
Identity
| Facility as filed | ASARCO, MISSION COMPLEX |
|---|---|
| Permittee as filed | ASARCO, INC. |
| NPDES ID | AZ0024635 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 5, 2014 |
| Expiration date | December 31, 2019 |
| Address | Sahuarita, AZ 85629 |
| Subwatershed | Helmet Peak (HUC 150503010709) |
| Other EPA IDs (FRS) | RCRA handler AZT000623678; ICIS-AIR source 0900000004019TOH02 |
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| pH | 2 | 18 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 18 | 0 | ||
| Solids, total suspended | 1 | 9 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 9 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 9 | 0 | ||
| Arsenic, total recoverable | 1 | 9 | 0 | ||
| Selenium, total recoverable | 1 | 9 | 0 | ||
| Zinc, total recoverable | 1 | 9 | 0 | ||
| Cadmium, total recoverable | 1 | 9 | 0 | ||
| Lead, total recoverable | 1 | 9 | 0 | ||
| Chromium, total recoverable | 1 | 9 | 0 | ||
| Copper, total recoverable | 1 | 9 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 1 | 9 | 0 | ||
| Mercury, total recoverable | 1 | 9 | 0 | ||
| Chemical Oxygen Demand [COD] | 1 | 9 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES AZ0024635.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES AZ0024635.
Inspections
EPA’s inspection file holds no inspection for NPDES AZ0024635.
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 AZ0024635.
Watch this permit
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- Discharge permits in Sahuarita
- Every permit record in Sahuarita, A to Z
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.