CORNERSTONE MINING, LLC

NPDES permit WV1023870 · Minor NON-POTW · administratively continued, expires 2026-09-15 · EPA's file as of 2026-09-23

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.

This permit expired on 2026-09-15 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
396required values missing, on 78 form(s)
51of 104 forms filed late

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

Reporting

Reports are due about 26 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (132)

OutfallParameterStatisticLimitMonths
001Flow rateMO AVG report only all year
001Flow rateMO MAX report only all year
001pHMO MIN >= 6 SU all year
001pHMO MAX <= 9 SU all year
001Solids, settleableMO MAX <= .5 mL/L all year
002Flow rateMO AVG report only all year
002Flow rateMO MAX report only all year
002pHMO MIN >= 6 SU all year
002pHMO MAX <= 9 SU all year
002Solids, settleableMO MAX <= .5 mL/L all year
003Flow rateMO AVG report only all year
003Flow rateMO MAX report only all year
003pHMO MIN >= 6 SU all year
003pHMO MAX <= 9 SU all year
003Solids, settleableMO MAX <= .5 mL/L all year
004Flow rateMO AVG report only all year
004Flow rateMO MAX report only all year
004pHMO MIN >= 6 SU all year
004pHMO MAX <= 9 SU all year
004Solids, settleableMO MAX <= .5 mL/L all year
005Flow rateMO AVG report only all year
005Flow rateMO MAX report only all year
005pHMO MIN >= 6 SU all year
005pHMO MAX <= 9 SU all year
005Solids, settleableMO MAX <= .5 mL/L all year
006Flow rateMO AVG report only all year
006Flow rateMO MAX report only all year
006pHMO MIN >= 6 SU all year
006pHMO MAX <= 9 SU all year
006Solids, settleableMO MAX <= .5 mL/L all year
007Flow rateMO AVG report only all year
007Flow rateMO MAX report only all year
007pHMO MIN >= 6 SU all year
007pHMO MAX <= 9 SU all year
007Solids, settleableMO MAX <= .5 mL/L all year
008Flow rateMO AVG report only all year
008Flow rateMO MAX report only all year
008pHMO MIN >= 6 SU all year
008pHMO MAX <= 9 SU all year
008Solids, settleableMO MAX <= .5 mL/L all year
009Flow rateMO AVG report only all year
009Flow rateMO MAX report only all year
009pHMO MIN >= 6 SU all year
009pHMO MAX <= 9 SU all year
009Solids, settleableMO MAX <= .5 mL/L all year
010Flow rateMO AVG report only all year
010Flow rateMO MAX report only all year
010pHMO MIN >= 6 SU all year
010pHMO MAX <= 9 SU all year
010Solids, settleableMO MAX <= .5 mL/L all year
011Flow rateMO AVG report only all year
011Flow rateMO MAX report only all year
011pHMO MIN >= 6 SU all year
011pHMO MAX <= 9 SU all year
011Solids, settleableMO MAX <= .5 mL/L all year
012Flow rateMO AVG report only all year
012Flow rateMO MAX report only all year
012pHMO MIN >= 6 SU all year
012pHMO MAX <= 9 SU all year
012Solids, settleableMO MAX <= .5 mL/L all year
013Flow rateMO AVG report only all year
013Flow rateMO MAX report only all year
013pHMO MIN >= 6 SU all year
013pHMO MAX <= 9 SU all year
013Solids, settleableMO MAX <= .5 mL/L all year
014Flow rateMO AVG report only all year
014Flow rateMO MAX report only all year
014pHMO MIN >= 6 SU all year
014pHMO MAX <= 9 SU all year
014Solids, settleableMO MAX <= .5 mL/L all year
018Flow rateMO AVG report only all year
018Flow rateMO MAX report only all year
018pHMO MIN >= 6 SU all year
018pHMO MAX <= 9 SU all year
018Solids, settleableMO MAX <= .5 mL/L all year
019Flow rateMO AVG report only all year
019Flow rateMO MAX report only all year
019pHMO MIN >= 6 SU all year
019pHMO MAX <= 9 SU all year
019Solids, settleableMO MAX <= .5 mL/L all year
020Flow rateMO AVG report only all year
020Flow rateMO MAX report only all year
020pHMO MIN >= 6 SU all year
020pHMO MAX <= 9 SU all year
020Solids, settleableMO MAX <= .5 mL/L all year
021Flow rateMO AVG report only all year
021Flow rateMO MAX report only all year
021pHMO MIN >= 6 SU all year
021pHMO MAX <= 9 SU all year
021Solids, settleableMO MAX <= .5 mL/L all year
022Flow rateMO AVG report only all year
022Flow rateMO MAX report only all year
022pHMO MIN >= 6 SU all year
022pHMO MAX <= 9 SU all year
022Solids, settleableMO MAX <= .5 mL/L all year
DSBBStream flow, instantaneousMO AVG report only all year
DSBBStream flow, instantaneousMO MAX report only all year
DSBBpHMO MIN >= 6 SU all year
DSBBpHMO MAX <= 9 SU all year
DSBBSolids, settleableMO MAX <= .5 mL/L all year
DSCC2Stream flow, instantaneousMO AVG report only all year
DSCC2Stream flow, instantaneousMO MAX report only all year
DSCC2pHMO MIN report only all year
DSCC2pHMO MAX report only all year
DSCC2Solids, settleableMO MIN report only all year
DSCC2Solids, settleableMO AVG report only all year
DSCC2Solids, settleableMO MAX report only all year
DSGBStream flow, instantaneousMO AVG report only all year
DSGBStream flow, instantaneousMO MAX report only all year
DSGBpHMO MIN >= 6 SU all year
DSGBpHMO MAX <= 9 SU all year
DSGBSolids, settleableMO MAX <= .5 mL/L all year
DSUTStream flow, instantaneousMO AVG report only all year
DSUTStream flow, instantaneousMO MAX report only all year
DSUTpHMO MIN report only all year
DSUTpHMO MAX report only all year
DSUTSolids, settleableMO MAX <= .5 mL/L all year
DSUTCC6Stream flow, instantaneousMO AVG report only all year
DSUTCC6Stream flow, instantaneousMO MAX report only all year
DSUTCC6pHMO MIN >= 6 SU all year
DSUTCC6pHMO MAX <= 9 SU all year
DSUTCC6Solids, settleableMO MAX <= .5 mL/L all year
DSUTGB01Stream flow, instantaneousMO AVG report only all year
DSUTGB01Stream flow, instantaneousMO MAX report only all year
DSUTGB01pHMO MIN >= 6 SU all year
DSUTGB01pHMO MAX <= 9 SU all year
DSUTGB01Solids, settleableMO MAX <= .5 mL/L all year
DSUTGB02Stream flow, instantaneousMO AVG report only all year
DSUTGB02Stream flow, instantaneousMO MAX report only all year
DSUTGB02pHMO MIN >= 6 SU all year
DSUTGB02pHMO MAX <= 9 SU all year
DSUTGB02Solids, settleableMO MAX <= .5 mL/L all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states