Clean Water Act discharge permit · NPDES MDG859645
LOWER BAKERSTOWN MINE, Westernport, MD: NPDES MDG859645 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 35Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
LOWER BAKERSTOWN MINE, held by AJR Construction Company, Inc., holds NPDES permit MDG859645, which discharges to Aarons Run. EPA’s file records it issued April 1, 2023 and expiring December 31, 2027. 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 | LOWER BAKERSTOWN MINE |
|---|---|
| Permittee as filed | AJR Construction Company, Inc. |
| NPDES ID | MDG859645 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 1, 2023 |
| Expiration date | December 31, 2027 |
| Issuing agency | MDE |
| Address | Westernport, MD 21562 |
| Receiving water | Aarons Run |
| Subwatershed | Town Line Run (HUC 050200060707) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 35Pollutants on file
- 35Under a numeric limit
- 34With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Turbidity | 2 | 13 | 1 | February 28, 2025 | |
| pH | 2 | 12 | 0 | ||
| Solids, total suspended | 2 | 12 | 0 | ||
| Iron, total [as Fe] | 2 | 12 | 0 | ||
| Manganese, total [as Mn] | 2 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 12 | 0 | ||
| Chloride | 1 | 6 | 0 | ||
| Specific conductance [umho/cm] | 1 | 6 | 0 | ||
| Sulfate | 1 | 6 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 5 | 0 | ||
| Temp. difference, summer [deg. F] | 1 | 5 | 0 | ||
| Solids, settleable | 1 | 2 | 0 | ||
| Arsenic, dissolved [as As] | 1 | 2 | 0 | ||
| Arsenic, total [as As] | 1 | 2 | 0 | ||
| Cadmium, dissolved [as Cd] | 1 | 2 | 0 | ||
| Cadmium, total [as Cd] | 1 | 2 | 0 | ||
| Chromium, dissolved [as Cr] | 1 | 2 | 0 | ||
| Chromium, total [as Cr] | 1 | 2 | 0 | ||
| Copper, dissolved [as Cu] | 1 | 2 | 0 | ||
| Copper, total [as Cu] | 1 | 2 | 0 | ||
| Lead, dissolved [as Pb] | 1 | 2 | 0 | ||
| Lead, total [as Pb] | 1 | 2 | 0 | ||
| Nickel, dissolved [as Ni] | 1 | 2 | 0 | ||
| Nickel, total [as Ni] | 1 | 2 | 0 | ||
| Silver, dissolved [as Ag] | 1 | 2 | 0 | ||
| Silver, total [as Ag] | 1 | 2 | 0 | ||
| Zinc, dissolved [as Zn] | 1 | 2 | 0 | ||
| Zinc, total [as Zn] | 1 | 2 | 0 | ||
| Aluminum, total [as Al] | 1 | 2 | 0 | ||
| Aluminum, dissolved [as Al] | 1 | 2 | 0 | ||
| Solids, total dissolved | 1 | 2 | 0 | ||
| Bromide [as Br] | 1 | 2 | 0 | ||
| Mercury, dissolved [as Hg] | 1 | 2 | 0 | ||
| Mercury, total [as Hg] | 1 | 2 | 0 | ||
| Selenium, total [as Se] | 1 | 0 | 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 MDG859645.
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 MDG859645 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.