Clean Water Act discharge permit · NPDES PAG030291
MAC HYDRAULICS 4901 CHESTER CREEK FACILITY, Brookhaven, PA: NPDES PAG030291 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
MAC HYDRAULICS 4901 CHESTER CREEK FACILITY, held by MAC MACHINE LLC DBA MAC HYDRAULICS, holds NPDES permit PAG030291, which discharges to Chester Creek. EPA’s file records it issued July 26, 2023 and expiring March 23, 2028.
MAC HYDRAULICS 4901 CHESTER CREEK FACILITY, Brookhaven, Pennsylvania: Coverage under a general permit PAG030291, held by MAC MACHINE LLC DBA MAC HYDRAULICS; Effective; issued July 26, 2023, term to March 23, 2028, by State Environmental Organization; discharges to Chester Creek.
- Oil & Grease: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 1 limit, 4 violations 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.
- Phosphorus, total [as P]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Iron, total [as Fe]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Zinc, total [as Zn]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Aluminum, total [as Al]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
MAC HYDRAULICS 4901 CHESTER CREEK FACILITY among its neighbors
EPA’s permit file holds 78 discharge permits in the Chester Creek subwatershed (HUC 020402020605), PAG030291 among them.
Other permits in the Chester Creek subwatershed (HUC 020402020605)
- 1200 S. CONCORD ROAD, Thornbury, Township Of: PAC150442, minor permit, permit term to December 7, 2029
- 250 E MARKET ST, West Chester: PAD150271, minor permit, discharging to Unnamed Stream, permit term to January 6, 2030
- 3M ASTON FACILITY, Aston: PAR230006, minor permit, discharging to BALDWIN RUN, permit term to August 31, 2015
- 552 OLD FORGE ROAD SUBDIVISION, Media: PAD230073, minor permit, permit term to November 29, 2028
- 901 SOUTH BOLMAR STREET, West Goshen, Township Of: PAC150330, minor permit, permit term to December 7, 2024
- 943 HIGH STREET REDEVELOPMENT, West Goshen, Township Of: PAC150367, minor permit, permit term to December 7, 2024
- A. DUIE PYLE COMPANIES WEST CHESTER CORPORATE FACILITY, West Chester: PAG030219, minor permit, discharging to UNT Of Chester Creek, permit term to March 23, 2028
- A. DUIE PYLE COMPANIES WEST CHESTER CORPORATE FACILITY, West Chester: PAR800164, minor permit, discharging to Unnamed Tributary Of Chester Creek, permit term to October 31, 2015
- A&A ENTERPRISES, LLC, Aston, Township Of: PAC230292, minor permit, permit term to December 7, 2024
- ALAN MANCILL, Glen Mills: PAD230083, minor permit, discharging to Unnamed Stream, permit term to October 1, 2029
Identity
| Facility as filed | MAC HYDRAULICS 4901 CHESTER CREEK FACILITY |
|---|---|
| Permittee as filed | MAC MACHINE LLC DBA MAC HYDRAULICS |
| NPDES ID | PAG030291 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 26, 2023 |
| Expiration date | March 23, 2028 |
| Issuing agency | State Environmental Organization |
| Address | Brookhaven, PA 19015 |
| Receiving water | Chester Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Chester Creek (HUC 020402020605) |
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Oil & Grease | 1 | 4 | 0 | ||
| Nitrogen, total [as N] | 1 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 4 | 0 | ||
| pH | 1 | 1 | 0 | ||
| Solids, total suspended | 1 | 1 | 0 | ||
| Phosphorus, total [as P] | 1 | 1 | 0 | ||
| Iron, total [as Fe] | 1 | 1 | 0 | ||
| Zinc, total [as Zn] | 1 | 1 | 0 | ||
| Aluminum, total [as Al] | 1 | 1 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES PAG030291.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES PAG030291.
Inspections
EPA’s inspection file holds no inspection for NPDES PAG030291.
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 PAG030291.
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, PAG030291.
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- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.