Clean Water Act discharge permit · NPDES MDG490588
BOONSBORO QUARRY, Boonsboro, MD: NPDES MDG490588 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
BOONSBORO QUARRY holds NPDES permit MDG490588, which discharges to Unnamed Trib.To Little Beaver Creek. EPA’s file records it issued January 20, 2012 and expiring April 30, 2015. 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 | BOONSBORO QUARRY |
|---|---|
| Permittee as filed | BOONSBORO QUARRY |
| NPDES ID | MDG490588 |
| 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 | January 20, 2012 |
| Expiration date | April 30, 2015 |
| Issuing agency | Maryland Department of The Environment |
| Address | Boonsboro, MD 21713 |
| Receiving water | UNNAMED TRIB.TO LITTLE BEAVER CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Towsers Branch-Little Patuxent River (HUC 020600060203) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| Temp. diff. between up/down stream deg. F | 1 | 14 | 4 | June 30, 2012 | 99,999% over the limit |
| pH | 2 | 10 | 1 | April 30, 2016 | |
| Temperature, water deg. fahrenheit | 1 | 3 | 1 | October 31, 2013 | 3% over the limit |
| pH change [range] | 2 | 20 | 0 | ||
| Solids, total suspended | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Solids, settleable | 1 | 2 | 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 MDG490588.
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 MDG490588 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.