Clean Water Act discharge permit · NPDES PA0247669
ARCH ROCK DEV STP, Mifflintown, PA: NPDES PA0247669 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
ARCH ROCK DEV STP, held by JOHN E GRONINGER INC, holds NPDES permit PA0247669, which discharges to Horning Run. EPA’s file records it issued February 24, 2016 and expiring March 31, 2021. 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 | ARCH ROCK DEV STP |
|---|---|
| Permittee as filed | JOHN E GRONINGER INC |
| NPDES ID | PA0247669 |
| 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 | February 24, 2016 |
| Expiration date | March 31, 2021 |
| Issuing agency | State Environmental Organization |
| Address | Mifflintown, PA 17054 |
| Receiving water | Horning Run |
| Subwatershed | Horning Creek-Juniata River (HUC 020503040803) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 17Under a numeric limit
- 17With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 4 | 18 | 16 | July 31, 2025 | 99,999% over the limit |
| Chlorine, total residual | 2 | 9 | 7 | December 31, 2025 | 100% over the limit |
| Solids, total suspended | 1 | 3 | 2 | March 31, 2019 | 10% over the limit |
| Oxygen, dissolved [DO] | 1 | 2 | 1 | August 31, 2023 | 98% over the limit |
| pH | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Nitrogen, Total | 2 | 1 | 0 | ||
| Phosphorus, Total | 2 | 1 | 0 | ||
| Nitrogen, total [as N] | 1 | 1 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 1 | 0 | ||
| Phosphorus, total [as P] | 1 | 1 | 0 | ||
| Nitrogen, Ammonia Total | 1 | 1 | 0 | ||
| Nitrogen, Kjeldahl Total | 1 | 1 | 0 | ||
| Nitrite Plus Nitrate Total | 1 | 1 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 1 | 1 | 0 |
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 PA0247669.
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
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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 PA0247669 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.