Clean Water Act discharge permit · NPDES MDG490994
LEGORE QUARRY, Keymar, MD: NPDES MDG490994 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
LEGORE QUARRY holds NPDES permit MDG490994, which discharges to Upper Monacacy 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 (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | LEGORE QUARRY |
|---|---|
| Permittee as filed | LEGORE QUARRY |
| NPDES ID | MDG490994 |
| 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 | Keymar, MD 21725 |
| Receiving water | UPPER MONACACY RIVER |
| Subwatershed | Carroll Creek-Monocacy River (HUC 020700090606) |
| SIC | 1422 – Crushed And Broken Limestone |
| Other EPA IDs (FRS) | RCRA handler MDD052350345; ICIS-AIR source MD0000002402100129 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 9Pollutants on file
- 7Under a numeric limit
- 9With a violation of any kind
- 5With 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 | 8 | 52 | 8 | July 31, 2021 | 347% over the limit |
| pH | 8 | 56 | 3 | December 31, 2022 | |
| Temperature, water deg. fahrenheit | 4 | 26 | 3 | September 30, 2017 | 6% over the limit |
| Temp. diff. between up/down stream deg. F | 4 | 22 | 3 | June 30, 2012 | 2,147,483,650% over the limit |
| Solids, settleable | 4 | 18 | 2 | March 31, 2007 | 300% over the limit |
| Flow, in conduit or thru treatment plant | 8 | 38 | 0 | ||
| pH change [range] | 8 | 32 | 0 | ||
| Temp. difference, summer [deg. F] | 0 | 1 | 0 | ||
| Temperature, summer [deg. F] | 0 | 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 MDG490994.
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, MDG490994.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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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 MDG490994 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.