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Mega Highwall Mining, LLC

Bituminous Coal And Lignite - Surface, Charleston, West Virginia. NPDES permit WV1013211, in force until May 13, 2030. Last 12 months: no values over a limit, 217 required values missing, 6 of 29 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 57 days after each period: outfall 004 form Q quarterly (30 values), outfall 006 form Q quarterly (29 values), outfall DBC form R quarterly (22 values), outfall DSAC form R quarterly (22 values), outfall UBC form R quarterly (22 values), outfall USAC form R quarterly (22 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
18 values over a limit, 103 required values missing, 24 of 96 reports late

Limits in force (148)

ParameterStatisticLimitMonthsOutfall
Flow ratemonthly averagereport only (gal/min)all year004
Flow ratemonthly maximumreport only (gal/min)all year004
Specific conductancemonthly minimumreport only (umho/cm)all year004
Specific conductancemonthly averagereport only (umho/cm)all year004
Specific conductancemonthly maximumreport only (umho/cm)all year004
pHmonthly minimum≥ 6 SUall year004
pHmonthly averagereport only (SU)all year004
pHmonthly maximum≤ 9 SUall year004
Solids, total suspendedmonthly minimumreport only (mg/L)all year004
Solids, total suspendedmonthly average≤ 35 mg/Lall year004
Solids, total suspendedmonthly maximum≤ 70 mg/Lall year004
Solids, settleablemonthly maximum≤ .5 mL/Lall year004
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all year004
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year004
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all year004
Iron, total [as Fe]monthly minimumreport only (mg/L)all year004
Iron, total [as Fe]monthly average≤ 1.42 mg/Lall year004
Iron, total [as Fe]monthly maximum≤ 2.46 mg/Lall year004
Manganese, total [as Mn]monthly minimumreport only (mg/L)all year004
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year004
Manganese, total [as Mn]monthly maximum≤ 3.47 mg/Lall year004
Aluminum, total [as Al]monthly minimumreport only (mg/L)all year004
Aluminum, total [as Al]monthly average≤ .43 mg/Lall year004
Aluminum, total [as Al]monthly maximum≤ .75 mg/Lall year004
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all year004
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all year004
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all year004
Solids, total dissolvedmonthly minimumreport only (mg/L)all year004
Solids, total dissolvedmonthly averagereport only (mg/L)all year004
Solids, total dissolvedmonthly maximumreport only (mg/L)all year004
Flow ratemonthly averagereport only (gal/min)all year006
Flow ratemonthly maximumreport only (gal/min)all year006
Specific conductancemonthly minimumreport only (umho/cm)all year006
Specific conductancemonthly averagereport only (umho/cm)all year006
Specific conductancemonthly maximumreport only (umho/cm)all year006
pHmonthly minimum≥ 6 SUall year006
pHmonthly averagereport only (SU)all year006
pHmonthly maximum≤ 9 SUall year006
Solids, total suspendedmonthly minimumreport only (mg/L)all year006
Solids, total suspendedmonthly average≤ 35 mg/Lall year006
Solids, total suspendedmonthly maximum≤ 70 mg/Lall year006
Solids, settleablemonthly maximum≤ .5 mL/Lall year006
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all year006
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year006
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all year006
Iron, total [as Fe]monthly minimumreport only (mg/L)all year006
Iron, total [as Fe]monthly average≤ 3 mg/Lall year006
Iron, total [as Fe]monthly maximum≤ 5.26 mg/Lall year006
Manganese, total [as Mn]monthly minimumreport only (mg/L)all year006
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year006
Manganese, total [as Mn]monthly maximum≤ 3.47 mg/Lall year006
Aluminum, total [as Al]monthly minimumreport only (mg/L)all year006
Aluminum, total [as Al]monthly average≤ .43 mg/Lall year006
Aluminum, total [as Al]monthly maximum≤ .75 mg/Lall year006
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all year006
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all year006
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all year006
Solids, total dissolvedmonthly minimumreport only (mg/L)all year006
Solids, total dissolvedmonthly averagereport only (mg/L)all year006
Solids, total dissolvedmonthly maximumreport only (mg/L)all year006
Stream flow, instantaneousmonthly averagereport only (cfs)all yearDBC
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearDBC
Specific conductancemonthly averagereport only (umho/cm)all yearDBC
Specific conductancemonthly maximumreport only (umho/cm)all yearDBC
pHmonthly minimumreport only (SU)all yearDBC
pHmonthly maximumreport only (SU)all yearDBC
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearDBC
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearDBC
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearDBC
Iron, total [as Fe]monthly averagereport only (mg/L)all yearDBC
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearDBC
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearDBC
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearDBC
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearDBC
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearDBC
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearDBC
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearDBC
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearDBC
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearDBC
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearDBC
Solids, total dissolvedmonthly averagereport only (mg/L)all yearDBC
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearDBC
Stream flow, instantaneousmonthly averagereport only (cfs)all yearDSAC
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearDSAC
Specific conductancemonthly averagereport only (umho/cm)all yearDSAC
Specific conductancemonthly maximumreport only (umho/cm)all yearDSAC
pHmonthly minimumreport only (SU)all yearDSAC
pHmonthly maximumreport only (SU)all yearDSAC
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearDSAC
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearDSAC
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearDSAC
Iron, total [as Fe]monthly averagereport only (mg/L)all yearDSAC
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearDSAC
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearDSAC
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearDSAC
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearDSAC
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearDSAC
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearDSAC
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearDSAC
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearDSAC
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearDSAC
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearDSAC
Solids, total dissolvedmonthly averagereport only (mg/L)all yearDSAC
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearDSAC
Stream flow, instantaneousmonthly averagereport only (cfs)all yearUBC
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearUBC
Specific conductancemonthly averagereport only (umho/cm)all yearUBC
Specific conductancemonthly maximumreport only (umho/cm)all yearUBC
pHmonthly minimumreport only (SU)all yearUBC
pHmonthly maximumreport only (SU)all yearUBC
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearUBC
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearUBC
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearUBC
Iron, total [as Fe]monthly averagereport only (mg/L)all yearUBC
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearUBC
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearUBC
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearUBC
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearUBC
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearUBC
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearUBC
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearUBC
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearUBC
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearUBC
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearUBC
Solids, total dissolvedmonthly averagereport only (mg/L)all yearUBC
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearUBC
Stream flow, instantaneousmonthly averagereport only (cfs)all yearUSAC
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearUSAC
Specific conductancemonthly averagereport only (umho/cm)all yearUSAC
Specific conductancemonthly maximumreport only (umho/cm)all yearUSAC
pHmonthly minimumreport only (SU)all yearUSAC
pHmonthly maximumreport only (SU)all yearUSAC
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearUSAC
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearUSAC
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearUSAC
Iron, total [as Fe]monthly averagereport only (mg/L)all yearUSAC
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearUSAC
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearUSAC
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearUSAC
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearUSAC
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearUSAC
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearUSAC
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearUSAC
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearUSAC
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearUSAC
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearUSAC
Solids, total dissolvedmonthly averagereport only (mg/L)all yearUSAC
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearUSAC

How strict are these limits?

Cited limits by parameter: West Virginia's rules and the federal ones.

Same industry: the 1,301 Coal Mining permits in West Virginia.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WV1013211 · MCP: https://passage-data.com/mcp