Imerys Refractory Minerals USA, Inc

NPDES permit AL0055930 · Minor NON-POTW · effective, expires 2028-08-31 · 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
0required values missing, on 0 form(s)
0of 30 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 89 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (60)

OutfallParameterStatisticLimitMonths
005pHDAILY MN >= 6 SU all year
005pHDAILY MN >= 6 SU all year
005pHDAILY MX <= 8.5 SU all year
005pHDAILY MX <= 8.5 SU all year
005Solids, total suspendedMO AVG <= 20 mg/L all year
005Solids, total suspendedMO AVG <= 20 mg/L all year
005Solids, total suspendedDAILY MX <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 30 mg/L all year
005Iron, total [as Fe]MO AVG <= .5 mg/L all year
005Iron, total [as Fe]MO AVG <= .5 mg/L all year
005Iron, total [as Fe]DAILY MX <= 1 mg/L all year
005Iron, total [as Fe]DAILY MX <= 1 mg/L all year
005Aluminum, total [as Al]MO AVG <= 1 mg/L all year
005Aluminum, total [as Al]MO AVG <= 1 mg/L all year
005Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
005Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
006pHDAILY MN >= 6 SU all year
006pHDAILY MN >= 6 SU all year
006pHDAILY MX <= 8.5 SU all year
006pHDAILY MX <= 8.5 SU all year
006Solids, total suspendedMO AVG <= 20 mg/L all year
006Solids, total suspendedMO AVG <= 20 mg/L all year
006Solids, total suspendedDAILY MX <= 30 mg/L all year
006Solids, total suspendedDAILY MX <= 30 mg/L all year
006Iron, total [as Fe]MO AVG <= .5 mg/L all year
006Iron, total [as Fe]MO AVG <= .5 mg/L all year
006Iron, total [as Fe]DAILY MX <= 1 mg/L all year
006Iron, total [as Fe]DAILY MX <= 1 mg/L all year
006Aluminum, total [as Al]MO AVG <= 1 mg/L all year
006Aluminum, total [as Al]MO AVG <= 1 mg/L all year
006Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
006Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
022pHDAILY MN >= 6 SU all year
022pHDAILY MN >= 6 SU all year
022pHDAILY MX <= 8.5 SU all year
022pHDAILY MX <= 8.5 SU all year
022Solids, total suspendedMO AVG <= 20 mg/L all year
022Solids, total suspendedMO AVG <= 20 mg/L all year
022Solids, total suspendedDAILY MX <= 30 mg/L all year
022Solids, total suspendedDAILY MX <= 30 mg/L all year
022Iron, total [as Fe]MO AVG <= .5 mg/L all year
022Iron, total [as Fe]MO AVG <= .5 mg/L all year
022Iron, total [as Fe]DAILY MX <= 1 mg/L all year
022Iron, total [as Fe]DAILY MX <= 1 mg/L all year
022Aluminum, total [as Al]MO AVG <= 1 mg/L all year
022Aluminum, total [as Al]MO AVG <= 1 mg/L all year
022Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
022Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
022Flow, in conduit or thru treatment plantMO AVG report only all year
022Flow, in conduit or thru treatment plantMO AVG report only all year
022Flow, in conduit or thru treatment plantDAILY MX report only all year
022Flow, in conduit or thru treatment plantDAILY MX 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