Clean Water Act discharge permit · NPDES PA0279668
MAPLETON NORTH QUARRY EXPANSION PHASE V, Mill Creek, PA: NPDES PA0279668 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MAPLETON NORTH QUARRY EXPANSION PHASE V, held by US SILICA CO, holds NPDES permit PA0279668, which discharges to Mill Creek. EPA’s file records it issued March 15, 2019 and expiring March 14, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MAPLETON NORTH QUARRY EXPANSION PHASE V |
|---|---|
| Permittee as filed | US SILICA CO |
| NPDES ID | PA0279668 |
| 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 | March 15, 2019 |
| Expiration date | March 14, 2024 |
| Issuing agency | State Environmental Organization |
| Address | Mill Creek, PA 17060 |
| Receiving water | Mill Creek |
| Subwatershed | Mill Creek (HUC 020503040102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 9Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 15 | 270 | 0 | ||
| pH | 14 | 264 | 0 | ||
| Aluminum, total [as Al] | 11 | 200 | 0 | ||
| Iron, total [as Fe] | 7 | 130 | 0 | ||
| Temperature, water deg. centigrade | 5 | 96 | 0 | ||
| Specific conductance | 5 | 96 | 0 | ||
| Sulfate, total [as SO4] | 5 | 96 | 0 | ||
| Manganese, total [as Mn] | 5 | 96 | 0 | ||
| Flow, in conduit or thru treatment plant | 5 | 96 | 0 | ||
| Solids, settleable | 0 | 6 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES PA0279668.
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 PA0279668.
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, PA0279668.
Start the watch
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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 PA0279668 there.
Nearby on the register
- Discharge permits in Mill Creek
- Every permit record in Mill Creek, A to Z
- Discharge permits in Pennsylvania
- Every permit record in Pennsylvania, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.