Clean Water Act discharge permit · NPDES MDG492956
HARVE DE GRACE QUARRY, Harve De Grace,, MD: NPDES MDG492956 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
HARVE DE GRACE QUARRY, held by Vulcan Construction Materials, L.P., holds NPDES permit MDG492956, which discharges to Susquehanna River. EPA’s file records it issued December 1, 2011 and expiring April 30, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | HARVE DE GRACE QUARRY |
|---|---|
| Permittee as filed | Vulcan Construction Materials, L.P. |
| NPDES ID | MDG492956 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 1, 2011 |
| Expiration date | April 30, 2015 |
| Issuing agency | Maryland Department of The Environment |
| Address | Harve De Grace,, MD 21078 |
| Receiving water | SUSQUEHANNA RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Rock Run-Susquehanna River (HUC 020503061713) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 5With a violation of any kind
- 3With 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 | 6 | 94 | 7 | April 30, 2026 | 37% over the limit |
| pH | 6 | 83 | 3 | December 31, 2009 | |
| Solids, settleable | 3 | 58 | 2 | September 30, 2009 | 39,900% over the limit |
| pH change [range] | 6 | 120 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 76 | 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 MDG492956.
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.
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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 MDG492956 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.