CORNERSTONE MINING, LLC

NPDES permit WV1029134 · Minor NON-POTW · effective, expires 2029-09-06 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
1094required values missing, on 34 form(s)
23of 57 forms filed late

Last period with anything received: 2026-03-31.

Reporting

Reports are due about 57 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (250)

OutfallParameterStatisticLimitMonths
003Flow rateMO AVG report only all year
003Flow rateMO MAX report only all year
003Specific conductanceMO MIN report only all year
003Specific conductanceMO AVG report only all year
003Specific conductanceMO MAX report only all year
003pHMO MIN >= 6 SU all year
003pHMO MAX <= 9 SU all year
003Alkalinity, total [as CaCO3]MO MIN report only all year
003Alkalinity, total [as CaCO3]MO AVG report only all year
003Solids, total suspendedMO MIN report only all year
003Solids, total suspendedMO AVG <= 35 mg/L all year
003Solids, total suspendedMO MAX <= 70 mg/L all year
003Solids, settleableMO MAX <= .5 mL/L all year
003Calcium, total [as Ca]MO MIN report only all year
003Calcium, total [as Ca]MO AVG report only all year
003Calcium, total [as Ca]MO MAX report only all year
003Magnesium, total [as Mg]MO MIN report only all year
003Magnesium, total [as Mg]MO AVG report only all year
003Magnesium, total [as Mg]MO MAX report only all year
003Sodium, total [as Na]MO MIN report only all year
003Sodium, total [as Na]MO AVG report only all year
003Sodium, total [as Na]MO MAX report only all year
003Potassium, total [as K]MO MIN report only all year
003Potassium, total [as K]MO AVG report only all year
003Potassium, total [as K]MO MAX report only all year
003Sulfate, total [as SO4]MO MIN report only all year
003Sulfate, total [as SO4]MO AVG report only all year
003Sulfate, total [as SO4]MO MAX report only all year
003Selenium, total recoverableMO MIN report only all year
003Selenium, total recoverableMO AVG report only all year
003Selenium, total recoverableMO MAX report only all year
003Iron, total [as Fe]MO MIN report only all year
003Iron, total [as Fe]MO AVG <= .95 mg/L all year
003Iron, total [as Fe]MO MAX <= 1.64 mg/L all year
003Manganese, total [as Mn]MO MIN report only all year
003Manganese, total [as Mn]MO AVG <= 2 mg/L all year
003Manganese, total [as Mn]MO MAX <= 4 mg/L all year
003Aluminum, total [as Al]MO MIN report only all year
003Aluminum, total [as Al]MO AVG <= .03 mg/L all year
003Aluminum, total [as Al]MO MAX <= .05 mg/L all year
003Aluminum, dissolved [as Al]MO MIN report only all year
003Aluminum, dissolved [as Al]MO AVG report only all year
003Aluminum, dissolved [as Al]MO MAX report only all year
003Toxicity [chronic], Ceriodaphnia dubiaMO MIN report only all year
003Toxicity [chronic], Ceriodaphnia dubiaMO AVG <= .82 tox chronic all year
003Toxicity [chronic], Ceriodaphnia dubiaMO MAX <= 1.64 tox chronic all year
003Solids, total dissolvedMO MIN report only all year
003Solids, total dissolvedMO AVG report only all year
003Solids, total dissolvedMO MAX report only all year
004Flow rateMO AVG report only all year
004Flow rateMO MAX report only all year
004Specific conductanceMO AVG report only all year
004Specific conductanceMO MAX report only all year
004pHMO MIN >= 6 SU all year
004pHMO MAX <= 9 SU all year
004Solids, total suspendedMO AVG <= 35 mg/L all year
004Solids, total suspendedMO MAX <= 70 mg/L all year
004Solids, settleableMO MAX <= .5 mL/L all year
004Sulfate, total [as SO4]MO AVG report only all year
004Sulfate, total [as SO4]MO MAX report only all year
004Selenium, total recoverableMO MIN report only all year
004Selenium, total recoverableMO AVG report only all year
004Selenium, total recoverableMO MAX report only all year
004Iron, total [as Fe]MO AVG <= .95 mg/L all year
004Iron, total [as Fe]MO MAX <= 1.64 mg/L all year
004Manganese, total [as Mn]MO AVG <= 2 mg/L all year
004Manganese, total [as Mn]MO MAX <= 4 mg/L all year
004Aluminum, total [as Al]MO MIN report only all year
004Aluminum, total [as Al]MO AVG <= 3 mg/L all year
004Aluminum, total [as Al]MO MAX <= 6 mg/L all year
004Aluminum, dissolved [as Al]MO AVG report only all year
004Aluminum, dissolved [as Al]MO MAX report only all year
004Solids, total dissolvedMO AVG report only all year
004Solids, total dissolvedMO MAX report only all year
BAS-CC-1Stream flow, instantaneousMO AVG report only all year
BAS-CC-1Stream flow, instantaneousMO MAX report only all year
BAS-CC-1Specific conductanceMO MIN report only all year
BAS-CC-1Specific conductanceMO AVG report only all year
BAS-CC-1Specific conductanceMO MAX report only all year
BAS-CC-1pHMO MIN report only all year
BAS-CC-1pHMO MAX report only all year
BAS-CC-1Alkalinity, total [as CaCO3]MO MIN report only all year
BAS-CC-1Alkalinity, total [as CaCO3]MO AVG report only all year
BAS-CC-1Alkalinity, total [as CaCO3]MO MAX report only all year
BAS-CC-1Solids, total suspendedMO MIN report only all year
BAS-CC-1Solids, total suspendedMO AVG report only all year
BAS-CC-1Solids, total suspendedMO MAX report only all year
BAS-CC-1Calcium, total [as Ca]MO MIN report only all year
BAS-CC-1Calcium, total [as Ca]MO AVG report only all year
BAS-CC-1Calcium, total [as Ca]MO MAX report only all year
BAS-CC-1Magnesium, total [as Mg]MO MIN report only all year
BAS-CC-1Magnesium, total [as Mg]MO AVG report only all year
BAS-CC-1Magnesium, total [as Mg]MO MAX report only all year
BAS-CC-1Sodium, total [as Na]MO MIN report only all year
BAS-CC-1Sodium, total [as Na]MO AVG report only all year
BAS-CC-1Sodium, total [as Na]MO MAX report only all year
BAS-CC-1Potassium, total [as K]MO MIN report only all year
BAS-CC-1Potassium, total [as K]MO AVG report only all year
BAS-CC-1Potassium, total [as K]MO MAX report only all year
BAS-CC-1Sulfate, total [as SO4]MO MIN report only all year
BAS-CC-1Sulfate, total [as SO4]MO AVG report only all year
BAS-CC-1Sulfate, total [as SO4]MO MAX report only all year
BAS-CC-1Iron, total [as Fe]MO MIN report only all year
BAS-CC-1Iron, total [as Fe]MO AVG report only all year
BAS-CC-1Iron, total [as Fe]MO MAX report only all year
BAS-CC-1Manganese, total [as Mn]MO MIN report only all year
BAS-CC-1Manganese, total [as Mn]MO AVG report only all year
BAS-CC-1Manganese, total [as Mn]MO MAX report only all year
BAS-CC-1Aluminum, total [as Al]MO MIN report only all year
BAS-CC-1Aluminum, total [as Al]MO AVG report only all year
BAS-CC-1Aluminum, total [as Al]MO MAX report only all year
BAS-CC-1Aluminum, dissolved [as Al]MO MIN report only all year
BAS-CC-1Aluminum, dissolved [as Al]MO AVG report only all year
BAS-CC-1Aluminum, dissolved [as Al]MO MAX report only all year
BAS-CC-1Solids, total dissolvedMO MIN report only all year
BAS-CC-1Solids, total dissolvedMO AVG report only all year
BAS-CC-1Solids, total dissolvedMO MAX report only all year
BAS-CC-2Stream flow, instantaneousMO AVG report only all year
BAS-CC-2Stream flow, instantaneousMO MAX report only all year
BAS-CC-2Specific conductanceMO MIN report only all year
BAS-CC-2Specific conductanceMO AVG report only all year
BAS-CC-2Specific conductanceMO MAX report only all year
BAS-CC-2pHMO MIN report only all year
BAS-CC-2pHMO MAX report only all year
BAS-CC-2Alkalinity, total [as CaCO3]MO MIN report only all year
BAS-CC-2Alkalinity, total [as CaCO3]MO AVG report only all year
BAS-CC-2Alkalinity, total [as CaCO3]MO MAX report only all year
BAS-CC-2Solids, total suspendedMO MIN report only all year
BAS-CC-2Solids, total suspendedMO AVG report only all year
BAS-CC-2Solids, total suspendedMO MAX report only all year
BAS-CC-2Calcium, total [as Ca]MO MIN report only all year
BAS-CC-2Calcium, total [as Ca]MO AVG report only all year
BAS-CC-2Calcium, total [as Ca]MO MAX report only all year
BAS-CC-2Magnesium, total [as Mg]MO MIN report only all year
BAS-CC-2Magnesium, total [as Mg]MO AVG report only all year
BAS-CC-2Magnesium, total [as Mg]MO MAX report only all year
BAS-CC-2Sodium, total [as Na]MO MIN report only all year
BAS-CC-2Sodium, total [as Na]MO AVG report only all year
BAS-CC-2Sodium, total [as Na]MO MAX report only all year
BAS-CC-2Potassium, total [as K]MO MIN report only all year
BAS-CC-2Potassium, total [as K]MO AVG report only all year
BAS-CC-2Potassium, total [as K]MO MAX report only all year
BAS-CC-2Sulfate, total [as SO4]MO MIN report only all year
BAS-CC-2Sulfate, total [as SO4]MO AVG report only all year
BAS-CC-2Sulfate, total [as SO4]MO MAX report only all year
BAS-CC-2Iron, total [as Fe]MO MIN report only all year
BAS-CC-2Iron, total [as Fe]MO AVG report only all year
BAS-CC-2Iron, total [as Fe]MO MAX report only all year
BAS-CC-2Manganese, total [as Mn]MO MIN report only all year
BAS-CC-2Manganese, total [as Mn]MO AVG report only all year
BAS-CC-2Manganese, total [as Mn]MO MAX report only all year
BAS-CC-2Aluminum, total [as Al]MO MIN report only all year
BAS-CC-2Aluminum, total [as Al]MO AVG report only all year
BAS-CC-2Aluminum, total [as Al]MO MAX report only all year
BAS-CC-2Aluminum, dissolved [as Al]MO MIN report only all year
BAS-CC-2Aluminum, dissolved [as Al]MO AVG report only all year
BAS-CC-2Aluminum, dissolved [as Al]MO MAX report only all year
BAS-CC-2Solids, total dissolvedMO MIN report only all year
BAS-CC-2Solids, total dissolvedMO AVG report only all year
BAS-CC-2Solids, total dissolvedMO MAX report only all year
DSCC1Stream flow, instantaneousMO AVG report only all year
DSCC1Stream flow, instantaneousMO MAX report only all year
DSCC1TurbidityMO MIN report only all year
DSCC1TurbidityMO AVG report only all year
DSCC1TurbidityMO MAX report only all year
DSCC1Specific conductanceMO MIN report only all year
DSCC1Specific conductanceMO AVG report only all year
DSCC1Specific conductanceMO MAX report only all year
DSCC1pHMO MIN report only all year
DSCC1pHMO MAX report only all year
DSCC1Sulfate, total [as SO4]MO MIN report only all year
DSCC1Sulfate, total [as SO4]MO AVG report only all year
DSCC1Sulfate, total [as SO4]MO MAX report only all year
DSCC1Selenium, total recoverableMO MIN report only all year
DSCC1Selenium, total recoverableMO AVG report only all year
DSCC1Selenium, total recoverableMO MAX report only all year
DSCC1Iron, total [as Fe]MO MIN report only all year
DSCC1Iron, total [as Fe]MO AVG report only all year
DSCC1Iron, total [as Fe]MO MAX report only all year
DSCC1Manganese, total [as Mn]MO MIN report only all year
DSCC1Manganese, total [as Mn]MO AVG report only all year
DSCC1Manganese, total [as Mn]MO MAX report only all year
DSCC1Aluminum, total [as Al]MO MIN report only all year
DSCC1Aluminum, total [as Al]MO AVG report only all year
DSCC1Aluminum, total [as Al]MO MAX report only all year
DSCC1Aluminum, dissolved [as Al]MO MIN report only all year
DSCC1Aluminum, dissolved [as Al]MO AVG report only all year
DSCC1Aluminum, dissolved [as Al]MO MAX report only all year
DSCC1Solids, total dissolvedMO MIN report only all year
DSCC1Solids, total dissolvedMO AVG report only all year
DSCC1Solids, total dissolvedMO MAX report only all year
DSTB1Stream flow, instantaneousMO AVG report only all year
DSTB1Stream flow, instantaneousMO MAX report only all year
DSTB1Specific conductanceMO MIN report only all year
DSTB1Specific conductanceMO AVG report only all year
DSTB1Specific conductanceMO MAX report only all year
DSTB1pHMO MIN report only all year
DSTB1pHMO MAX report only all year
DSTB1Sulfate, total [as SO4]MO MIN report only all year
DSTB1Sulfate, total [as SO4]MO AVG report only all year
DSTB1Sulfate, total [as SO4]MO MAX report only all year
DSTB1Selenium, total recoverableMO MIN report only all year
DSTB1Selenium, total recoverableMO AVG report only all year
DSTB1Selenium, total recoverableMO MAX report only all year
DSTB1Iron, total [as Fe]MO MIN report only all year
DSTB1Iron, total [as Fe]MO AVG report only all year
DSTB1Iron, total [as Fe]MO MAX report only all year
DSTB1Manganese, total [as Mn]MO MIN report only all year
DSTB1Manganese, total [as Mn]MO AVG report only all year
DSTB1Manganese, total [as Mn]MO MAX report only all year
DSTB1Aluminum, total [as Al]MO MIN report only all year
DSTB1Aluminum, total [as Al]MO AVG report only all year
DSTB1Aluminum, total [as Al]MO MAX report only all year
DSTB1Aluminum, dissolved [as Al]MO MIN report only all year
DSTB1Aluminum, dissolved [as Al]MO AVG report only all year
DSTB1Aluminum, dissolved [as Al]MO MAX report only all year
DSTB1Solids, total dissolvedMO MIN report only all year
DSTB1Solids, total dissolvedMO AVG report only all year
DSTB1Solids, total dissolvedMO MAX report only all year
USCC3Stream flow, instantaneousMO AVG report only all year
USCC3Stream flow, instantaneousMO MAX report only all year
USCC3TurbidityMO MIN report only all year
USCC3TurbidityMO AVG report only all year
USCC3TurbidityMO MAX report only all year
USCC3Specific conductanceMO MIN report only all year
USCC3Specific conductanceMO AVG report only all year
USCC3Specific conductanceMO MAX report only all year
USCC3pHMO MIN report only all year
USCC3pHMO MAX report only all year
USCC3Sulfate, total [as SO4]MO MIN report only all year
USCC3Sulfate, total [as SO4]MO AVG report only all year
USCC3Sulfate, total [as SO4]MO MAX report only all year
USCC3Selenium, total recoverableMO MIN report only all year
USCC3Selenium, total recoverableMO AVG report only all year
USCC3Selenium, total recoverableMO MAX report only all year
USCC3Iron, total [as Fe]MO MIN report only all year
USCC3Iron, total [as Fe]MO AVG report only all year
USCC3Iron, total [as Fe]MO MAX report only all year
USCC3Manganese, total [as Mn]MO MIN report only all year
USCC3Manganese, total [as Mn]MO AVG report only all year
USCC3Manganese, total [as Mn]MO MAX report only all year
USCC3Aluminum, total [as Al]MO MIN report only all year
USCC3Aluminum, total [as Al]MO AVG report only all year
USCC3Aluminum, total [as Al]MO MAX report only all year
USCC3Aluminum, dissolved [as Al]MO MIN report only all year
USCC3Aluminum, dissolved [as Al]MO AVG report only all year
USCC3Aluminum, dissolved [as Al]MO MAX report only all year
USCC3Solids, total dissolvedMO MIN report only all year
USCC3Solids, total dissolvedMO AVG report only all year
USCC3Solids, total dissolvedMO MAX report only all year

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