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Cornerstone Processing, LLC

Bituminous Coal And Lignite - Surface, Rock, West Virginia. NPDES permit WV1030256, in force until May 18, 2031. Last 12 months: no values over a limit, 599 required values missing, 30 of 49 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 57 days after each period: outfall 001 form Q quarterly, outfall 002 form Q quarterly, outfall 003 form Q quarterly, outfall 004 form Q quarterly, outfall DSCC1 form Q quarterly, outfall DSTB1 form Q quarterly, and 1 more form
Last report on file
March 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 45 of 84 reports late

Limits in force (193)

ParameterStatisticLimitMonthsOutfall
Flow ratemonthly averagereport only (gal/min)all year001
Flow ratemonthly maximumreport only (gal/min)all year001
Specific conductancemonthly minimumreport only (umho/cm)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 maximum≤ .5 mL/Lall year001
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all year001
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year001
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all year001
Selenium, total recoverablemonthly minimumreport only (ug/L)all year001
Selenium, total recoverablemonthly average≤ 4.7 ug/Lall year001
Selenium, total recoverablemonthly maximum≤ 8.2 ug/Lall 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 minimumreport 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 minimumreport only (umho/cm)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 minimumreport only (mg/L)all year002
Solids, total suspendedmonthly average≤ 35 mg/Lall year002
Solids, total suspendedmonthly maximum≤ 70 mg/Lall year002
Solids, settleablemonthly maximum≤ .5 mL/Lall year002
Sulfate, total [as SO4]monthly minimumreport only (mg/L)all year002
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year002
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all year002
Selenium, total recoverablemonthly minimumreport only (ug/L)all year002
Selenium, total recoverablemonthly average≤ 4.7 ug/Lall year002
Selenium, total recoverablemonthly maximum≤ 8.2 ug/Lall year002
Iron, total [as Fe]monthly minimumreport only (mg/L)all year002
Iron, total [as Fe]monthly average≤ .95 mg/Lall year002
Iron, total [as Fe]monthly maximum≤ 1.64 mg/Lall year002
Manganese, total [as Mn]monthly minimumreport only (mg/L)all year002
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year002
Manganese, total [as Mn]monthly maximum≤ 4 mg/Lall year002
Aluminum, total [as Al]monthly minimumreport only (mg/L)all year002
Aluminum, total [as Al]monthly average≤ 3 mg/Lall year002
Aluminum, total [as Al]monthly maximum≤ 6 mg/Lall year002
Aluminum, dissolved [as Al]monthly minimumreport only (mg/L)all year002
Aluminum, dissolved [as Al]monthly averagereport only (mg/L)all year002
Aluminum, dissolved [as Al]monthly maximumreport only (mg/L)all year002
Solids, total dissolvedmonthly minimumreport 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
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
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 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
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 minimumreport 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 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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WV1030256 · MCP: https://passage-data.com/mcp