Clean Water Act discharge permit · NPDES PAG035010
TETRA TECH INC MANSFIELD FACILITY, Mansfield, PA: NPDES PAG035010 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
TETRA TECH INC MANSFIELD FACILITY, held by TETRA TECH INC, holds NPDES permit PAG035010, which discharges to Tioga River. EPA’s file records it issued May 5, 2025 and expiring March 23, 2028.
TETRA TECH INC MANSFIELD FACILITY, Mansfield, Pennsylvania: Coverage under a general permit PAG035010, held by TETRA TECH INC; Effective; issued May 5, 2025, term to March 23, 2028, by State Environmental Organization; discharges to Tioga River.
- Oxygen demand, chem. [high level] [COD]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- pH: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Solids, total suspended: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Oil & Grease: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
Other permits held by TETRA TECH INC
- TETRA TECH INC MANSFIELD FACILITY, Mansfield: PAR314803, issued October 12, 2010
TETRA TECH INC MANSFIELD FACILITY among its neighbors
EPA’s permit file holds 6 discharge permits in the Middle Tioga River subwatershed (HUC 020501040907), PAG035010 among them. Its county holds 64, 1 of them major permits; PAG035010 is a minor permit.
Other permits in the Middle Tioga River subwatershed (HUC 020501040907)
- COMMONWEALTH CHARTER ACADEMY MANSFIELD, Mansfield, Borough Of: PAC590059, minor permit, permit term to December 7, 2024
- ENSMINGER FILL SITE, Richmond, Township Of: PAC590072, minor permit, permit term to December 7, 2029
- ONOVO TRAVEL PLAZA, Richmond, Township Of: PAC590042, minor permit, permit term to December 7, 2024
- TETRA TECH INC MANSFIELD FACILITY, Mansfield: PAR314803, minor permit, discharging to Unnamed Tributary To Tioga River, permit term to October 31, 2015
- TIOGA BOROUGH, Tioga: PA0209236, minor permit, discharging to Tioga River, permit term to August 31, 2026
Identity
| Facility as filed | TETRA TECH INC MANSFIELD FACILITY |
|---|---|
| Permittee as filed | TETRA TECH INC |
| NPDES ID | PAG035010 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 5, 2025 |
| Expiration date | March 23, 2028 |
| Issuing agency | State Environmental Organization |
| Address | Mansfield, PA 16933 |
| Receiving water | Tioga River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Middle Tioga River (HUC 020501040907) |
Effluent limits and exceedances
- 6Pollutants on file
- 6Under a numeric limit
- 6With 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 |
|---|---|---|---|---|---|
| Oxygen demand, chem. [high level] [COD] | 1 | 1 | 0 | ||
| pH | 1 | 1 | 0 | ||
| Solids, total suspended | 1 | 1 | 0 | ||
| Oil & Grease | 1 | 1 | 0 | ||
| Nitrogen, total [as N] | 1 | 1 | 0 | ||
| Phosphorus, total [as P] | 1 | 1 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES PAG035010.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES PAG035010.
Inspections
EPA’s inspection file holds no inspection for NPDES PAG035010.
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 PAG035010.
Watch this permit
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.