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Cornerstone Mining, LLC

Bituminous Coal And Lignite - Surface, Rock, West Virginia. NPDES permit WV1029134, in force until Sep 6, 2029. Last 12 months: no values over a limit, 1094 required values missing, 21 of 54 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 57 days after each period: outfall 003 form Q quarterly (46 values), outfall 003 form R quarterly (3 values), outfall 004 form Q quarterly (25 values), outfall BAS-CC-1 form R quarterly (43 values), outfall BAS-CC-2 form R quarterly (43 values), outfall DSCC1 form Q quarterly (31 values), and 2 more forms
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 39 of 72 reports late

Limits in force (250)

ParameterStatisticLimitMonthsOutfall
Flow ratemonthly averagereport only (gal/min)all year003
Flow ratemonthly maximumreport only (gal/min)all year003
Specific conductancemonthly minimumreport only (umho/cm)all year003
Specific conductancemonthly averagereport only (umho/cm)all year003
Specific conductancemonthly maximumreport only (umho/cm)all year003
pHmonthly minimum≥ 6 SUall year003
pHmonthly maximum≤ 9 SUall year003
Alkalinity, total [as CaCO3]monthly minimumreport only (mg/L)all year003
Alkalinity, total [as CaCO3]monthly averagereport only (mg/L)all year003
Solids, total suspendedmonthly minimumreport only (mg/L)all year003
Solids, total suspendedmonthly average≤ 35 mg/Lall year003
Solids, total suspendedmonthly maximum≤ 70 mg/Lall year003
Solids, settleablemonthly maximum≤ .5 mL/Lall year003
Calcium, total [as Ca]monthly minimumreport only (mg/L)all year003
Calcium, total [as Ca]monthly averagereport only (mg/L)all year003
Calcium, total [as Ca]monthly maximumreport only (mg/L)all year003
Magnesium, total [as Mg]monthly minimumreport only (mg/L)all year003
Magnesium, total [as Mg]monthly averagereport only (mg/L)all year003
Magnesium, total [as Mg]monthly maximumreport only (mg/L)all year003
Sodium, total [as Na]monthly minimumreport only (mg/L)all year003
Sodium, total [as Na]monthly averagereport only (mg/L)all year003
Sodium, total [as Na]monthly maximumreport only (mg/L)all year003
Potassium, total [as K]monthly minimumreport only (mg/L)all year003
Potassium, total [as K]monthly averagereport only (mg/L)all year003
Potassium, total [as K]monthly maximumreport only (mg/L)all year003
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all year003
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year003
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all year003
Selenium, total recoverablemonthly minimumreport only (ug/L)all year003
Selenium, total recoverablemonthly averagereport only (ug/L)all year003
Selenium, total recoverablemonthly maximumreport only (ug/L)all year003
Iron, total [as Fe]monthly minimumreport only (mg/L)all year003
Iron, total [as Fe]monthly average≤ .95 mg/Lall year003
Iron, total [as Fe]monthly maximum≤ 1.64 mg/Lall year003
Manganese, total [as Mn]monthly minimumreport only (mg/L)all year003
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year003
Manganese, total [as Mn]monthly maximum≤ 4 mg/Lall year003
Aluminum, total [as Al]monthly minimumreport only (mg/L)all year003
Aluminum, total [as Al]monthly average≤ .03 mg/Lall year003
Aluminum, total [as Al]monthly maximum≤ .05 mg/Lall year003
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all year003
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all year003
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all year003
Toxicity [chronic], Ceriodaphnia dubiamonthly minimumreport only (tox chronic)all year003
Toxicity [chronic], Ceriodaphnia dubiamonthly average≤ .82 tox chronicall year003
Toxicity [chronic], Ceriodaphnia dubiamonthly maximum≤ 1.64 tox chronicall year003
Solids, total dissolvedmonthly minimumreport only (mg/L)all year003
Solids, total dissolvedmonthly averagereport only (mg/L)all year003
Solids, total dissolvedmonthly maximumreport only (mg/L)all year003
Flow ratemonthly averagereport only (gal/min)all year004
Flow ratemonthly maximumreport only (gal/min)all year004
Specific conductancemonthly averagereport only (umho/cm)all year004
Specific conductancemonthly maximumreport only (umho/cm)all year004
pHmonthly minimum≥ 6 SUall year004
pHmonthly maximum≤ 9 SUall 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 averagereport only (mg/L)all year004
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all year004
Selenium, total recoverablemonthly minimumreport only (ug/L)all year004
Selenium, total recoverablemonthly averagereport only (ug/L)all year004
Selenium, total recoverablemonthly maximumreport only (ug/L)all year004
Iron, total [as Fe]monthly average≤ .95 mg/Lall year004
Iron, total [as Fe]monthly maximum≤ 1.64 mg/Lall year004
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year004
Manganese, total [as Mn]monthly maximum≤ 4 mg/Lall year004
Aluminum, total [as Al]monthly minimumreport only (mg/L)all year004
Aluminum, total [as Al]monthly average≤ 3 mg/Lall year004
Aluminum, total [as Al]monthly maximum≤ 6 mg/Lall 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 averagereport only (mg/L)all year004
Solids, total dissolvedmonthly maximumreport only (mg/L)all year004
Stream flow, instantaneousmonthly averagereport only (cfs)all yearBAS-CC-1
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearBAS-CC-1
Specific conductancemonthly minimumreport only (umho/cm)all yearBAS-CC-1
Specific conductancemonthly averagereport only (umho/cm)all yearBAS-CC-1
Specific conductancemonthly maximumreport only (umho/cm)all yearBAS-CC-1
pHmonthly minimumreport only (SU)all yearBAS-CC-1
pHmonthly maximumreport only (SU)all yearBAS-CC-1
Alkalinity, total [as CaCO3]monthly minimumreport only (mg/L)all yearBAS-CC-1
Alkalinity, total [as CaCO3]monthly averagereport only (mg/L)all yearBAS-CC-1
Alkalinity, total [as CaCO3]monthly maximumreport only (mg/L)all yearBAS-CC-1
Solids, total suspendedmonthly minimumreport only (mg/L)all yearBAS-CC-1
Solids, total suspendedmonthly averagereport only (mg/L)all yearBAS-CC-1
Solids, total suspendedmonthly maximumreport only (mg/L)all yearBAS-CC-1
Calcium, total [as Ca]monthly minimumreport only (mg/L)all yearBAS-CC-1
Calcium, total [as Ca]monthly averagereport only (mg/L)all yearBAS-CC-1
Calcium, total [as Ca]monthly maximumreport only (mg/L)all yearBAS-CC-1
Magnesium, total [as Mg]monthly minimumreport only (mg/L)all yearBAS-CC-1
Magnesium, total [as Mg]monthly averagereport only (mg/L)all yearBAS-CC-1
Magnesium, total [as Mg]monthly maximumreport only (mg/L)all yearBAS-CC-1
Sodium, total [as Na]monthly minimumreport only (mg/L)all yearBAS-CC-1
Sodium, total [as Na]monthly averagereport only (mg/L)all yearBAS-CC-1
Sodium, total [as Na]monthly maximumreport only (mg/L)all yearBAS-CC-1
Potassium, total [as K]monthly minimumreport only (mg/L)all yearBAS-CC-1
Potassium, total [as K]monthly averagereport only (mg/L)all yearBAS-CC-1
Potassium, total [as K]monthly maximumreport only (mg/L)all yearBAS-CC-1
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearBAS-CC-1
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearBAS-CC-1
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearBAS-CC-1
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearBAS-CC-1
Iron, total [as Fe]monthly averagereport only (mg/L)all yearBAS-CC-1
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearBAS-CC-1
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearBAS-CC-1
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearBAS-CC-1
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearBAS-CC-1
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearBAS-CC-1
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearBAS-CC-1
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearBAS-CC-1
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearBAS-CC-1
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearBAS-CC-1
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearBAS-CC-1
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearBAS-CC-1
Solids, total dissolvedmonthly averagereport only (mg/L)all yearBAS-CC-1
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearBAS-CC-1
Stream flow, instantaneousmonthly averagereport only (cfs)all yearBAS-CC-2
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearBAS-CC-2
Specific conductancemonthly minimumreport only (umho/cm)all yearBAS-CC-2
Specific conductancemonthly averagereport only (umho/cm)all yearBAS-CC-2
Specific conductancemonthly maximumreport only (umho/cm)all yearBAS-CC-2
pHmonthly minimumreport only (SU)all yearBAS-CC-2
pHmonthly maximumreport only (SU)all yearBAS-CC-2
Alkalinity, total [as CaCO3]monthly minimumreport only (mg/L)all yearBAS-CC-2
Alkalinity, total [as CaCO3]monthly averagereport only (mg/L)all yearBAS-CC-2
Alkalinity, total [as CaCO3]monthly maximumreport only (mg/L)all yearBAS-CC-2
Solids, total suspendedmonthly minimumreport only (mg/L)all yearBAS-CC-2
Solids, total suspendedmonthly averagereport only (mg/L)all yearBAS-CC-2
Solids, total suspendedmonthly maximumreport only (mg/L)all yearBAS-CC-2
Calcium, total [as Ca]monthly minimumreport only (mg/L)all yearBAS-CC-2
Calcium, total [as Ca]monthly averagereport only (mg/L)all yearBAS-CC-2
Calcium, total [as Ca]monthly maximumreport only (mg/L)all yearBAS-CC-2
Magnesium, total [as Mg]monthly minimumreport only (mg/L)all yearBAS-CC-2
Magnesium, total [as Mg]monthly averagereport only (mg/L)all yearBAS-CC-2
Magnesium, total [as Mg]monthly maximumreport only (mg/L)all yearBAS-CC-2
Sodium, total [as Na]monthly minimumreport only (mg/L)all yearBAS-CC-2
Sodium, total [as Na]monthly averagereport only (mg/L)all yearBAS-CC-2
Sodium, total [as Na]monthly maximumreport only (mg/L)all yearBAS-CC-2
Potassium, total [as K]monthly minimumreport only (mg/L)all yearBAS-CC-2
Potassium, total [as K]monthly averagereport only (mg/L)all yearBAS-CC-2
Potassium, total [as K]monthly maximumreport only (mg/L)all yearBAS-CC-2
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearBAS-CC-2
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearBAS-CC-2
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearBAS-CC-2
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearBAS-CC-2
Iron, total [as Fe]monthly averagereport only (mg/L)all yearBAS-CC-2
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearBAS-CC-2
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearBAS-CC-2
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearBAS-CC-2
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearBAS-CC-2
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearBAS-CC-2
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearBAS-CC-2
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearBAS-CC-2
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearBAS-CC-2
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearBAS-CC-2
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearBAS-CC-2
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearBAS-CC-2
Solids, total dissolvedmonthly averagereport only (mg/L)all yearBAS-CC-2
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearBAS-CC-2
Stream flow, instantaneousmonthly averagereport only (cfs)all yearDSCC1
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearDSCC1
Turbiditymonthly minimumreport only (NTU)all yearDSCC1
Turbiditymonthly averagereport only (NTU)all yearDSCC1
Turbiditymonthly maximumreport only (NTU)all yearDSCC1
Specific conductancemonthly minimumreport only (umho/cm)all yearDSCC1
Specific conductancemonthly averagereport only (umho/cm)all yearDSCC1
Specific conductancemonthly maximumreport only (umho/cm)all yearDSCC1
pHmonthly minimumreport only (SU)all yearDSCC1
pHmonthly maximumreport only (SU)all yearDSCC1
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearDSCC1
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearDSCC1
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearDSCC1
Selenium, total recoverablemonthly minimumreport only (ug/L)all yearDSCC1
Selenium, total recoverablemonthly averagereport only (ug/L)all yearDSCC1
Selenium, total recoverablemonthly maximumreport only (ug/L)all yearDSCC1
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearDSCC1
Iron, total [as Fe]monthly averagereport only (mg/L)all yearDSCC1
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearDSCC1
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearDSCC1
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearDSCC1
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearDSCC1
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearDSCC1
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearDSCC1
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearDSCC1
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearDSCC1
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearDSCC1
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearDSCC1
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearDSCC1
Solids, total dissolvedmonthly averagereport only (mg/L)all yearDSCC1
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearDSCC1
Stream flow, instantaneousmonthly averagereport only (cfs)all yearDSTB1
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearDSTB1
Specific conductancemonthly minimumreport only (umho/cm)all yearDSTB1
Specific conductancemonthly averagereport only (umho/cm)all yearDSTB1
Specific conductancemonthly maximumreport only (umho/cm)all yearDSTB1
pHmonthly minimumreport only (SU)all yearDSTB1
pHmonthly maximumreport only (SU)all yearDSTB1
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearDSTB1
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearDSTB1
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearDSTB1
Selenium, total recoverablemonthly minimumreport only (ug/L)all yearDSTB1
Selenium, total recoverablemonthly averagereport only (ug/L)all yearDSTB1
Selenium, total recoverablemonthly maximumreport only (ug/L)all yearDSTB1
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearDSTB1
Iron, total [as Fe]monthly averagereport only (mg/L)all yearDSTB1
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearDSTB1
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearDSTB1
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearDSTB1
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearDSTB1
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearDSTB1
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearDSTB1
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearDSTB1
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearDSTB1
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearDSTB1
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearDSTB1
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearDSTB1
Solids, total dissolvedmonthly averagereport only (mg/L)all yearDSTB1
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearDSTB1
Stream flow, instantaneousmonthly averagereport only (cfs)all yearUSCC3
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearUSCC3
Turbiditymonthly minimumreport only (NTU)all yearUSCC3
Turbiditymonthly averagereport only (NTU)all yearUSCC3
Turbiditymonthly maximumreport only (NTU)all yearUSCC3
Specific conductancemonthly minimumreport only (umho/cm)all yearUSCC3
Specific conductancemonthly averagereport only (umho/cm)all yearUSCC3
Specific conductancemonthly maximumreport only (umho/cm)all yearUSCC3
pHmonthly minimumreport only (SU)all yearUSCC3
pHmonthly maximumreport only (SU)all yearUSCC3
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearUSCC3
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearUSCC3
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearUSCC3
Selenium, total recoverablemonthly minimumreport only (ug/L)all yearUSCC3
Selenium, total recoverablemonthly averagereport only (ug/L)all yearUSCC3
Selenium, total recoverablemonthly maximumreport only (ug/L)all yearUSCC3
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearUSCC3
Iron, total [as Fe]monthly averagereport only (mg/L)all yearUSCC3
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearUSCC3
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearUSCC3
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearUSCC3
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearUSCC3
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearUSCC3
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearUSCC3
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearUSCC3
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearUSCC3
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearUSCC3
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearUSCC3
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearUSCC3
Solids, total dissolvedmonthly averagereport only (mg/L)all yearUSCC3
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearUSCC3

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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Your permit document is the final word. As JSON: /api/v1/permits/WV1029134 · MCP: https://passage-data.com/mcp