Clean Water Act discharge permit · NPDES MDG859633
UNDERWOOD MINE, Crellin, MD: NPDES MDG859633 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
UNDERWOOD MINE, held by LAOC Corporation, holds NPDES permit MDG859633. EPA’s file records it issued November 16, 2012 and expiring June 30, 2017. 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 | UNDERWOOD MINE |
|---|---|
| Permittee as filed | LAOC Corporation |
| NPDES ID | MDG859633 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 16, 2012 |
| Expiration date | June 30, 2017 |
| Issuing agency | Maryland Department of The Environment |
| Address | Crellin, MD 21550 |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 29Pollutants on file
- 6Under a numeric limit
- 29With 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 |
|---|---|---|---|---|---|
| Turbidity | 2 | 22 | 1 | May 31, 2014 | |
| Manganese, total [as Mn] | 2 | 22 | 1 | March 31, 2014 | 375% over the limit |
| Solids, total suspended | 1 | 9 | 1 | May 31, 2014 | 242% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 24 | 0 | ||
| Iron, total [as Fe] | 2 | 21 | 0 | ||
| pH | 2 | 19 | 0 | ||
| Temp. difference, summer [deg. F] | 0 | 6 | 0 | ||
| Temperature, water deg. fahrenheit | 0 | 4 | 0 | ||
| Temp. diff. between samp. & upstrm deg. F | 0 | 4 | 0 | ||
| Solids, settleable | 0 | 4 | 0 | ||
| Chloride [as Cl] | 0 | 4 | 0 | ||
| Bromide [as Br] | 0 | 4 | 0 | ||
| Specific conductance | 0 | 3 | 0 | ||
| Arsenic, total [as As] | 0 | 2 | 0 | ||
| Beryllium, total [as Be] | 0 | 2 | 0 | ||
| Cadmium, total [as Cd] | 0 | 2 | 0 | ||
| Chromium, total [as Cr] | 0 | 2 | 0 | ||
| Copper, total [as Cu] | 0 | 2 | 0 | ||
| Lead, total [as Pb] | 0 | 2 | 0 | ||
| Thallium, total [as Tl] | 0 | 2 | 0 | ||
| Nickel, total [as Ni] | 0 | 2 | 0 | ||
| Silver, total [as Ag] | 0 | 2 | 0 | ||
| Zinc, total [as Zn] | 0 | 2 | 0 | ||
| Antimony, total [as Sb] | 0 | 2 | 0 | ||
| Aluminum, total [as Al] | 0 | 2 | 0 | ||
| Selenium, total [as Se] | 0 | 2 | 0 | ||
| Solids, total dissolved | 0 | 2 | 0 | ||
| Mercury, total [as Hg] | 0 | 2 | 0 | ||
| Sulfate | 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 MDG859633.
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 MDG859633 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.