MEGA HIGHWALL MINING, LLC

NPDES permit WV1008129 · Minor NON-POTW · effective, expires 2030-11-30 · 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

8values over a limit
148required values missing, on 38 form(s)
18of 81 forms filed late

Last period with anything received: 2026-05-31. Most often over: Aluminum, total [as Al] (4), Solids, total suspended (2), Iron, total [as Fe] (2).

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 (262)

OutfallParameterStatisticLimitMonths
002Flow rateMO AVG report only all year
002Flow rateMO MAX report only all year
002Specific conductanceMO MIN report only all year
002Specific conductanceMO AVG report only all year
002Specific conductanceMO MAX report only all year
002pHMO MIN >= 6 SU all year
002pHMO AVG report only all year
002pHMO MAX <= 9 SU all year
002Solids, total suspendedMO MIN report only all year
002Solids, total suspendedMO AVG <= 35 mg/L all year
002Solids, total suspendedMO MAX <= 70 mg/L all year
002Solids, settleableMO MIN report only all year
002Solids, settleableMO AVG report only all year
002Solids, settleableMO MAX <= .5 mL/L all year
002Sulfate, total [as SO4]MO MIN report only all year
002Sulfate, total [as SO4]MO AVG report only all year
002Sulfate, total [as SO4]MO MAX report only all year
002Iron, total [as Fe]MO MIN report only all year
002Iron, total [as Fe]MO AVG <= 1.42 mg/L all year
002Iron, total [as Fe]MO MAX <= 2.46 mg/L all year
002Manganese, total [as Mn]MO MIN report only all year
002Manganese, total [as Mn]MO AVG <= 2 mg/L all year
002Manganese, total [as Mn]MO MAX <= 3.47 mg/L all year
002Aluminum, total [as Al]MO MIN report only all year
002Aluminum, total [as Al]MO AVG <= .43 mg/L all year
002Aluminum, total [as Al]MO MAX <= .75 mg/L all year
002Aluminum, dissolved [as Al]MO MIN report only all year
002Aluminum, dissolved [as Al]MO AVG report only all year
002Aluminum, dissolved [as Al]MO MAX report only all year
002Solids, total dissolvedMO MIN report only all year
002Solids, total dissolvedMO AVG report only all year
002Solids, total dissolvedMO MAX report only all year
004Flow rateMO AVG report only all year
004Flow rateMO MAX report only all year
004Specific conductanceMO MIN 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 AVG report only all year
004pHMO MAX <= 9 SU all year
004Solids, total suspendedMO MIN report only all year
004Solids, total suspendedMO AVG <= 35 mg/L all year
004Solids, total suspendedMO MAX <= 70 mg/L all year
004Solids, settleableMO MIN report only all year
004Solids, settleableMO AVG report only all year
004Solids, settleableMO MAX <= .5 mL/L all year
004Sulfate, total [as SO4]MO MIN report only all year
004Sulfate, total [as SO4]MO AVG report only all year
004Sulfate, total [as SO4]MO MAX report only all year
004Iron, total [as Fe]MO MIN report only all year
004Iron, total [as Fe]MO AVG <= 1.42 mg/L all year
004Iron, total [as Fe]MO MAX <= 2.46 mg/L all year
004Manganese, total [as Mn]MO MIN report only all year
004Manganese, total [as Mn]MO AVG <= 2 mg/L all year
004Manganese, total [as Mn]MO MAX <= 3.47 mg/L all year
004Aluminum, total [as Al]MO MIN report only all year
004Aluminum, total [as Al]MO AVG <= .43 mg/L all year
004Aluminum, total [as Al]MO MAX <= .75 mg/L all year
004Aluminum, dissolved [as Al]MO MIN report only 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 MIN report only all year
004Solids, total dissolvedMO AVG report only all year
004Solids, total dissolvedMO MAX report only all year
005Flow rateMO AVG report only all year
005Flow rateMO MAX report only all year
005Specific conductanceMO MIN report only all year
005Specific conductanceMO AVG report only all year
005Specific conductanceMO MAX report only all year
005pHMO MIN >= 6 SU all year
005pHMO AVG report only all year
005pHMO MAX <= 9 SU all year
005Solids, total suspendedMO MIN report only all year
005Solids, total suspendedMO AVG <= 35 mg/L all year
005Solids, total suspendedMO MAX <= 70 mg/L all year
005Solids, settleableMO MIN report only all year
005Solids, settleableMO AVG report only all year
005Solids, settleableMO MAX <= .5 mL/L all year
005Sulfate, total [as SO4]MO MIN report only all year
005Sulfate, total [as SO4]MO AVG report only all year
005Sulfate, total [as SO4]MO MAX report only all year
005Iron, total [as Fe]MO MIN report only all year
005Iron, total [as Fe]MO AVG <= 1.42 mg/L all year
005Iron, total [as Fe]MO MAX <= 2.46 mg/L all year
005Manganese, total [as Mn]MO MIN report only all year
005Manganese, total [as Mn]MO AVG <= 2 mg/L all year
005Manganese, total [as Mn]MO MAX <= 3.47 mg/L all year
005Aluminum, total [as Al]MO MIN report only all year
005Aluminum, total [as Al]MO AVG <= 3 mg/L all year
005Aluminum, total [as Al]MO MAX <= 6 mg/L all year
005Aluminum, dissolved [as Al]MO MIN report only all year
005Aluminum, dissolved [as Al]MO AVG report only all year
005Aluminum, dissolved [as Al]MO MAX report only all year
005Solids, total dissolvedMO MIN report only all year
005Solids, total dissolvedMO AVG report only all year
005Solids, total dissolvedMO MAX report only all year
006Flow rateMO AVG report only all year
006Flow rateMO MAX report only all year
006Specific conductanceMO MIN report only all year
006Specific conductanceMO AVG report only all year
006Specific conductanceMO MAX report only all year
006pHMO MIN >= 6 SU all year
006pHMO AVG report only all year
006pHMO MAX <= 9 SU all year
006Solids, total suspendedMO MIN report only all year
006Solids, total suspendedMO AVG <= 35 mg/L all year
006Solids, total suspendedMO MAX <= 70 mg/L all year
006Solids, settleableMO MIN report only all year
006Solids, settleableMO AVG report only all year
006Solids, settleableMO MAX <= .5 mL/L all year
006Sulfate, total [as SO4]MO MIN report only all year
006Sulfate, total [as SO4]MO AVG report only all year
006Sulfate, total [as SO4]MO MAX report only all year
006Iron, total [as Fe]MO MIN report only all year
006Iron, total [as Fe]MO AVG <= 1.42 mg/L all year
006Iron, total [as Fe]MO MAX <= 2.46 mg/L all year
006Manganese, total [as Mn]MO MIN report only all year
006Manganese, total [as Mn]MO AVG <= 2 mg/L all year
006Manganese, total [as Mn]MO MAX <= 3.47 mg/L all year
006Aluminum, total [as Al]MO MIN report only all year
006Aluminum, total [as Al]MO AVG <= .43 mg/L all year
006Aluminum, total [as Al]MO MAX <= .75 mg/L all year
006Aluminum, dissolved [as Al]MO MIN report only all year
006Aluminum, dissolved [as Al]MO AVG report only all year
006Aluminum, dissolved [as Al]MO MAX report only all year
006Solids, total dissolvedMO MIN report only all year
006Solids, total dissolvedMO AVG report only all year
006Solids, total dissolvedMO MAX report only all year
007Flow rateMO AVG report only all year
007Flow rateMO MAX report only all year
007Specific conductanceMO MIN report only all year
007Specific conductanceMO AVG report only all year
007Specific conductanceMO MAX report only all year
007pHMO MIN >= 6 SU all year
007pHMO AVG report only all year
007pHMO MAX <= 9 SU all year
007Solids, total suspendedMO MIN report only all year
007Solids, total suspendedMO AVG <= 35 mg/L all year
007Solids, total suspendedMO MAX <= 70 mg/L all year
007Solids, settleableMO MIN report only all year
007Solids, settleableMO AVG report only all year
007Solids, settleableMO MAX <= .5 mL/L all year
007Sulfate, total [as SO4]MO MIN report only all year
007Sulfate, total [as SO4]MO AVG report only all year
007Sulfate, total [as SO4]MO MAX report only all year
007Iron, total [as Fe]MO MIN report only all year
007Iron, total [as Fe]MO AVG <= 1.42 mg/L all year
007Iron, total [as Fe]MO MAX <= 2.46 mg/L all year
007Manganese, total [as Mn]MO MIN report only all year
007Manganese, total [as Mn]MO AVG <= 2 mg/L all year
007Manganese, total [as Mn]MO MAX <= 3.47 mg/L all year
007Aluminum, total [as Al]MO MIN report only all year
007Aluminum, total [as Al]MO AVG <= .43 mg/L all year
007Aluminum, total [as Al]MO MAX <= .75 mg/L all year
007Aluminum, dissolved [as Al]MO MIN report only all year
007Aluminum, dissolved [as Al]MO AVG report only all year
007Aluminum, dissolved [as Al]MO MAX report only all year
007Solids, total dissolvedMO MIN report only all year
007Solids, total dissolvedMO AVG report only all year
007Solids, total dissolvedMO MAX report only all year
032Flow rateMO AVG report only all year
032Flow rateMO MAX report only all year
032Specific conductanceMO MIN report only all year
032Specific conductanceMO AVG report only all year
032Specific conductanceMO MAX report only all year
032pHMO MIN >= 6 SU all year
032pHMO AVG report only all year
032pHMO MAX <= 9 SU all year
032Solids, total suspendedMO MIN report only all year
032Solids, total suspendedMO AVG <= 35 mg/L all year
032Solids, total suspendedMO MAX <= 70 mg/L all year
032Solids, settleableMO MAX <= .5 mL/L all year
032Sulfate, total [as SO4]MO MIN report only all year
032Sulfate, total [as SO4]MO AVG report only all year
032Sulfate, total [as SO4]MO MAX report only all year
032Iron, total [as Fe]MO MIN report only all year
032Iron, total [as Fe]MO AVG <= 1.42 mg/L all year
032Iron, total [as Fe]MO MAX <= 2.46 mg/L all year
032Manganese, total [as Mn]MO MIN report only all year
032Manganese, total [as Mn]MO AVG <= 2 mg/L all year
032Manganese, total [as Mn]MO MAX <= 3.47 mg/L all year
032Aluminum, total [as Al]MO MIN report only all year
032Aluminum, total [as Al]MO AVG <= .43 mg/L all year
032Aluminum, total [as Al]MO MAX <= .75 mg/L all year
032Aluminum, dissolved [as Al]MO MIN report only all year
032Aluminum, dissolved [as Al]MO AVG report only all year
032Aluminum, dissolved [as Al]MO MAX report only all year
032Solids, total dissolvedMO MIN report only all year
032Solids, total dissolvedMO AVG report only all year
032Solids, total dissolvedMO MAX report only all year
033Flow rateMO AVG report only all year
033Flow rateMO MAX report only all year
033Specific conductanceMO MIN report only all year
033Specific conductanceMO AVG report only all year
033Specific conductanceMO MAX report only all year
033pHMO MIN >= 6 SU all year
033pHMO MAX <= 9 SU all year
033Solids, total suspendedMO MIN report only all year
033Solids, total suspendedMO AVG <= 35 mg/L all year
033Solids, total suspendedMO MAX <= 70 mg/L all year
033Solids, settleableMO MAX <= .5 mL/L all year
033Sulfate, total [as SO4]MO MIN report only all year
033Sulfate, total [as SO4]MO AVG report only all year
033Sulfate, total [as SO4]MO MAX report only all year
033Iron, total [as Fe]MO MIN report only all year
033Iron, total [as Fe]MO AVG <= 1.42 mg/L all year
033Iron, total [as Fe]MO MAX <= 2.46 mg/L all year
033Manganese, total [as Mn]MO MIN report only all year
033Manganese, total [as Mn]MO AVG <= 2 mg/L all year
033Manganese, total [as Mn]MO MAX <= 4 mg/L all year
033Aluminum, total [as Al]MO MIN report only all year
033Aluminum, total [as Al]MO AVG <= 3 mg/L all year
033Aluminum, total [as Al]MO MAX <= 6 mg/L all year
033Aluminum, dissolved [as Al]MO MIN report only all year
033Aluminum, dissolved [as Al]MO AVG report only all year
033Aluminum, dissolved [as Al]MO MAX report only all year
033Solids, total dissolvedMO MIN report only all year
033Solids, total dissolvedMO AVG report only all year
033Solids, total dissolvedMO MAX report only all year
DSACStream flow, instantaneousMO AVG report only all year
DSACStream flow, instantaneousMO MAX report only all year
DSACSpecific conductanceMO AVG report only all year
DSACSpecific conductanceMO MAX report only all year
DSACpHMO MIN report only all year
DSACpHMO MAX report only all year
DSACSulfate, total [as SO4]MO AVG report only all year
DSACSulfate, total [as SO4]MO MAX report only all year
DSACIron, total [as Fe]MO AVG report only all year
DSACIron, total [as Fe]MO MAX report only all year
DSACManganese, total [as Mn]MO MIN report only all year
DSACManganese, total [as Mn]MO AVG report only all year
DSACManganese, total [as Mn]MO MAX report only all year
DSACAluminum, total [as Al]MO MIN report only all year
DSACAluminum, total [as Al]MO AVG report only all year
DSACAluminum, total [as Al]MO MAX report only all year
DSACAluminum, dissolved [as Al]MO MIN report only all year
DSACAluminum, dissolved [as Al]MO AVG report only all year
DSACAluminum, dissolved [as Al]MO MAX report only all year
DSACSolids, total dissolvedMO AVG report only all year
DSACSolids, total dissolvedMO MAX report only all year
USACStream flow, instantaneousMO AVG report only all year
USACStream flow, instantaneousMO MAX report only all year
USACSpecific conductanceMO AVG report only all year
USACSpecific conductanceMO MAX report only all year
USACpHMO MIN report only all year
USACpHMO MAX report only all year
USACSulfate, total [as SO4]MO AVG report only all year
USACSulfate, total [as SO4]MO MAX report only all year
USACIron, total [as Fe]MO MIN report only all year
USACIron, total [as Fe]MO AVG report only all year
USACIron, total [as Fe]MO MAX report only all year
USACManganese, total [as Mn]MO MIN report only all year
USACManganese, total [as Mn]MO AVG report only all year
USACManganese, total [as Mn]MO MAX report only all year
USACAluminum, total [as Al]MO MIN report only all year
USACAluminum, total [as Al]MO AVG report only all year
USACAluminum, total [as Al]MO MAX report only all year
USACAluminum, dissolved [as Al]MO MIN report only all year
USACAluminum, dissolved [as Al]MO AVG report only all year
USACAluminum, dissolved [as Al]MO MAX report only all year
USACSolids, total dissolvedMO AVG report only all year
USACSolids, total dissolvedMO MAX report only 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