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Cornerstone Processing, LLC

Bituminous Coal And Lignite - Surface, Switchback, West Virginia. NPDES permit WV1024701, in force until Sep 2, 2027. Last 12 months: no values over a limit, 884 required values missing, 32 of 72 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 57 days after each period: outfall 001 form Q quarterly (29 values), outfall 002 form Q quarterly (12 values), outfall 003 form Q quarterly (32 values), outfall 004 form Q quarterly (33 values), outfall DSEC2 form Q quarterly (28 values), outfall DSUTEC2 form Q quarterly (31 values), and 2 more forms
Renewal application due
Mar 6, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 48 of 96 reports late

Limits in force (221)

ParameterStatisticLimitMonthsOutfall
Flow ratemonthly averagereport only (gal/min)all year001
Flow ratemonthly maximumreport only (gal/min)all year001
Turbiditymonthly minimumreport only (NTU)all year001
Turbiditymonthly maximumreport only (NTU)all year001
Specific conductancemonthly averagereport only (umho/cm)all year001
Specific conductancemonthly maximumreport only (umho/cm)all year001
pHmonthly minimum≥ 6 SUall year001
pHmonthly maximum≤ 9 SUall year001
Solids, total suspendedmonthly minimumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 35 mg/Lall year001
Solids, total suspendedmonthly maximum≤ 70 mg/Lall year001
Solids, settleablemonthly minimumreport only (mL/L)all year001
Solids, settleablemonthly maximum≤ .5 mL/Lall year001
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year001
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all year001
Iron, total [as Fe]monthly minimumreport only (mg/L)all year001
Iron, total [as Fe]monthly average≤ .95 mg/Lall year001
Iron, total [as Fe]monthly maximum≤ 1.64 mg/Lall year001
Manganese, total [as Mn]monthly minimumreport only (mg/L)all year001
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year001
Manganese, total [as Mn]monthly maximum≤ 4 mg/Lall year001
Aluminum, total [as Al]monthly minimumreport only (mg/L)all year001
Aluminum, total [as Al]monthly average≤ 3 mg/Lall year001
Aluminum, total [as Al]monthly maximum≤ 6 mg/Lall year001
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all year001
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all year001
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all year001
Solids, total dissolvedmonthly averagereport only (mg/L)all year001
Solids, total dissolvedmonthly maximumreport only (mg/L)all year001
Flow ratemonthly averagereport only (gal/min)all year002
Flow ratemonthly maximumreport only (gal/min)all year002
Specific conductancemonthly averagereport only (umho/cm)all year002
Specific conductancemonthly maximumreport only (umho/cm)all year002
pHmonthly minimum≥ 6 SUall year002
pHmonthly maximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 35 mg/Lall year002
Solids, total suspendedmonthly maximum≤ 70 mg/Lall year002
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year002
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all year002
Solids, total dissolvedmonthly averagereport only (mg/L)all year002
Solids, total dissolvedmonthly maximumreport only (mg/L)all year002
Flow ratemonthly averagereport only (gal/min)all year003
Flow ratemonthly maximumreport only (gal/min)all year003
Turbiditymonthly minimumreport only (NTU)all year003
Turbiditymonthly maximumreport only (NTU)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
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 minimumreport only (mL/L)all year003
Solids, settleablemonthly maximum≤ .5 mL/Lall 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 average≤ 4.7 ug/Lall year003
Selenium, total recoverablemonthly maximum≤ 8.2 ug/Lall 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≤ 3 mg/Lall year003
Aluminum, total [as Al]monthly maximum≤ 6 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
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
Turbiditymonthly minimumreport only (NTU)all year004
Turbiditymonthly averagereport only (NTU)all year004
Turbiditymonthly maximumreport only (NTU)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 minimumreport only (mg/L)all year004
Solids, total suspendedmonthly average≤ 35 mg/Lall year004
Solids, total suspendedmonthly maximum≤ 70 mg/Lall year004
Solids, settleablemonthly minimumreport only (mL/L)all 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 average≤ 4.7 ug/Lall year004
Selenium, total recoverablemonthly maximum≤ 8.2 ug/Lall year004
Iron, total [as Fe]monthly minimumreport only (mg/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 minimumreport only (mg/L)all 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 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 averagereport only (mg/L)all year004
Solids, total dissolvedmonthly maximumreport only (mg/L)all year004
Stream flow, instantaneousmonthly averagereport only (cfs)all yearDSEC2
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearDSEC2
Turbiditymonthly minimumreport only (NTU)all yearDSEC2
Turbiditymonthly averagereport only (NTU)all yearDSEC2
Turbiditymonthly maximumreport only (NTU)all yearDSEC2
Specific conductancemonthly minimumreport only (umho/cm)all yearDSEC2
Specific conductancemonthly averagereport only (umho/cm)all yearDSEC2
Specific conductancemonthly maximumreport only (umho/cm)all yearDSEC2
pHmonthly minimumreport only (SU)all yearDSEC2
pHmonthly maximumreport only (SU)all yearDSEC2
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearDSEC2
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearDSEC2
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearDSEC2
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearDSEC2
Iron, total [as Fe]monthly averagereport only (mg/L)all yearDSEC2
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearDSEC2
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearDSEC2
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearDSEC2
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearDSEC2
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearDSEC2
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearDSEC2
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearDSEC2
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearDSEC2
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearDSEC2
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearDSEC2
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearDSEC2
Solids, total dissolvedmonthly averagereport only (mg/L)all yearDSEC2
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearDSEC2
Stream flow, instantaneousmonthly averagereport only (cfs)all yearDSUTEC2
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearDSUTEC2
Turbiditymonthly minimumreport only (NTU)all yearDSUTEC2
Turbiditymonthly averagereport only (NTU)all yearDSUTEC2
Turbiditymonthly maximumreport only (NTU)all yearDSUTEC2
Specific conductancemonthly minimumreport only (umho/cm)all yearDSUTEC2
Specific conductancemonthly averagereport only (umho/cm)all yearDSUTEC2
Specific conductancemonthly maximumreport only (umho/cm)all yearDSUTEC2
pHmonthly minimumreport only (SU)all yearDSUTEC2
pHmonthly maximumreport only (SU)all yearDSUTEC2
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearDSUTEC2
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearDSUTEC2
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearDSUTEC2
Selenium, total recoverablemonthly minimumreport only (ug/L)all yearDSUTEC2
Selenium, total recoverablemonthly averagereport only (ug/L)all yearDSUTEC2
Selenium, total recoverablemonthly maximumreport only (ug/L)all yearDSUTEC2
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearDSUTEC2
Iron, total [as Fe]monthly averagereport only (mg/L)all yearDSUTEC2
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearDSUTEC2
Manganese, total [as Mn]monthly minimumreport only (mg/L)all yearDSUTEC2
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearDSUTEC2
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearDSUTEC2
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearDSUTEC2
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearDSUTEC2
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearDSUTEC2
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearDSUTEC2
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearDSUTEC2
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearDSUTEC2
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearDSUTEC2
Solids, total dissolvedmonthly averagereport only (mg/L)all yearDSUTEC2
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearDSUTEC2
Stream flow, instantaneousmonthly averagereport only (cfs)all yearUSEC2
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearUSEC2
Turbiditymonthly minimumreport only (NTU)all yearUSEC2
Turbiditymonthly averagereport only (NTU)all yearUSEC2
Turbiditymonthly maximumreport only (NTU)all yearUSEC2
Specific conductancemonthly minimumreport only (umho/cm)all yearUSEC2
Specific conductancemonthly averagereport only (umho/cm)all yearUSEC2
Specific conductancemonthly maximumreport only (umho/cm)all yearUSEC2
pHmonthly minimumreport only (SU)all yearUSEC2
pHmonthly maximumreport only (SU)all yearUSEC2
Hardness, total [as CaCO3]monthly minimumreport only (mg/L)all yearUSEC2
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all yearUSEC2
Hardness, total [as CaCO3]monthly maximumreport only (mg/L)all yearUSEC2
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearUSEC2
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearUSEC2
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearUSEC2
Selenium, total recoverablemonthly minimumreport only (ug/L)all yearUSEC2
Selenium, total recoverablemonthly averagereport only (ug/L)all yearUSEC2
Selenium, total recoverablemonthly maximumreport only (ug/L)all yearUSEC2
Iron, total [as Fe]monthly averagereport only (mg/L)all yearUSEC2
Iron, total [as Fe]monthly maximumreport only (mg/L)all yearUSEC2
Manganese, total [as Mn]monthly averagereport only (mg/L)all yearUSEC2
Manganese, total [as Mn]monthly maximumreport only (mg/L)all yearUSEC2
Aluminum, total [as Al]monthly averagereport only (mg/L)all yearUSEC2
Aluminum, total [as Al]monthly maximumreport only (mg/L)all yearUSEC2
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearUSEC2
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearUSEC2
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearUSEC2
Solids, total dissolvedmonthly averagereport only (mg/L)all yearUSEC2
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearUSEC2
Stream flow, instantaneousmonthly averagereport only (cfs)all yearUSUTEC2
Stream flow, instantaneousmonthly maximumreport only (cfs)all yearUSUTEC2
Turbiditymonthly minimumreport only (NTU)all yearUSUTEC2
Turbiditymonthly averagereport only (NTU)all yearUSUTEC2
Turbiditymonthly maximumreport only (NTU)all yearUSUTEC2
Specific conductancemonthly minimumreport only (umho/cm)all yearUSUTEC2
Specific conductancemonthly averagereport only (umho/cm)all yearUSUTEC2
Specific conductancemonthly maximumreport only (umho/cm)all yearUSUTEC2
pHmonthly minimumreport only (SU)all yearUSUTEC2
pHmonthly averagereport only (SU)all yearUSUTEC2
pHmonthly maximumreport only (SU)all yearUSUTEC2
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all yearUSUTEC2
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearUSUTEC2
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearUSUTEC2
Selenium, total recoverablemonthly minimumreport only (ug/L)all yearUSUTEC2
Selenium, total recoverablemonthly averagereport only (ug/L)all yearUSUTEC2
Selenium, total recoverablemonthly maximumreport only (ug/L)all yearUSUTEC2
Iron, total [as Fe]monthly minimumreport only (mg/L)all yearUSUTEC2
Manganese, total [as Mn]monthly minimumreport only (mL/L)all yearUSUTEC2
Aluminum, total [as Al]monthly minimumreport only (mg/L)all yearUSUTEC2
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all yearUSUTEC2
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all yearUSUTEC2
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all yearUSUTEC2
Solids, total dissolvedmonthly minimumreport only (mg/L)all yearUSUTEC2
Solids, total dissolvedmonthly averagereport only (mg/L)all yearUSUTEC2
Solids, total dissolvedmonthly maximumreport only (mg/L)all yearUSUTEC2

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/WV1024701 · MCP: https://passage-data.com/mcp