CORNWALL MINING LLC

NPDES permit PA0224448 · Minor NON-POTW · expired, expires 2025-07-19 · 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.

This permit expired on 2025-07-19 and is expired: 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
42required values missing, on 3 form(s)
0of 10 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among PA permits in EPA's filings — check your permit).

Limits in force (28)

OutfallParameterStatisticLimitMonths
006pHINST MIN >= 6 SU all year
006pHINST MIN >= 6 SU all year
006pHINST MAX <= 9 SU all year
006pHINST MAX <= 9 SU all year
006pHINST MIN >= 6 SU all year
006pHINST MIN >= 6 SU all year
006pHINST MAX <= 9 SU all year
006pHINST MAX <= 9 SU all year
006Alkalinity, total [as CaCO3]INST MAX report only all year
006Alkalinity, total [as CaCO3]INST MAX report only all year
006Alkalinity, total [as CaCO3]INST MAX report only all year
006Alkalinity, total [as CaCO3]INST MAX report only all year
006Acidity, total [as CaCO3]INST MAX report only all year
006Acidity, total [as CaCO3]INST MAX report only all year
006Acidity, total [as CaCO3]INST MAX report only all year
006Acidity, total [as CaCO3]INST MAX report only all year
006Solids, total suspendedMO AVG <= 35 mg/L all year
006Solids, total suspendedMO AVG <= 35 mg/L all year
006Solids, total suspendedDAILY MX <= 70 mg/L all year
006Solids, total suspendedDAILY MX <= 70 mg/L all year
006Solids, total suspendedINST MAX <= 90 mg/L all year
006Solids, total suspendedINST MAX <= 90 mg/L all year
006Solids, settleableINST MAX <= .5 mL/L all year
006Solids, settleableINST MAX <= .5 mL/L all year
006Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
006Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
006Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
006Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/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