Clean Water Act discharge permit · NPDES MDG499768
MASON DIXON MATERIALS .CECIL PLANT, Port Deposit, MD: NPDES MDG499768 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
MASON DIXON MATERIALS .CECIL PLANT, held by CECIL PLANT(York Building Products Inc), holds NPDES permit MDG499768, which discharges to Furnace Bay. 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 | MASON DIXON MATERIALS .CECIL PLANT |
|---|---|
| Permittee as filed | CECIL PLANT(York Building Products Inc) |
| NPDES ID | MDG499768 |
| 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 | Port Deposit, MD 21904 |
| Receiving water | FURNACE BAY |
| Subwatershed | Mill Creek-Furnace Bay (HUC 020600020103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 6Under 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 36 | 885 | 7 | April 30, 2026 | 90% over the limit |
| pH | 36 | 872 | 2 | September 30, 2015 | |
| pH change [range] | 36 | 875 | 1 | September 30, 2015 | |
| Flow, in conduit or thru treatment plant | 36 | 878 | 0 | ||
| Solids, settleable | 9 | 142 | 0 | ||
| Temperature, water deg. fahrenheit | 9 | 108 | 0 | ||
| Temp. diff. between up/down stream 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 MDG499768.
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 MDG499768 there.
Nearby on the register
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- Every permit record in Port Deposit, A to Z
- Discharge permits in Maryland
- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.