Imerys Refractory Minerals USA, Inc.

NPDES permit AL0068128 · Minor NON-POTW · administratively continued, expires 2026-08-23 · 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 2026-08-23 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
0required values missing, on 0 form(s)
0of 50 forms filed late

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

Reporting

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

Limits in force (100)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 8.5 SU all year
001pHDAILY MX <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Iron, total [as Fe]MO AVG <= .5 mg/L all year
001Iron, total [as Fe]MO AVG <= .5 mg/L all year
001Iron, total [as Fe]DAILY MX <= 1 mg/L all year
001Iron, total [as Fe]DAILY MX <= 1 mg/L all year
001Aluminum, total [as Al]MO AVG <= 1 mg/L all year
001Aluminum, total [as Al]MO AVG <= 1 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
002pHDAILY MN >= 6 SU all year
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 8.5 SU all year
002pHDAILY MX <= 8.5 SU all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Iron, total [as Fe]MO AVG <= .5 mg/L all year
002Iron, total [as Fe]MO AVG <= .5 mg/L all year
002Iron, total [as Fe]DAILY MX <= 1 mg/L all year
002Iron, total [as Fe]DAILY MX <= 1 mg/L all year
002Aluminum, total [as Al]MO AVG <= 1 mg/L all year
002Aluminum, total [as Al]MO AVG <= 1 mg/L all year
002Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
002Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
004pHDAILY MN >= 6 SU all year
004pHDAILY MN >= 6 SU all year
004pHDAILY MX <= 8.5 SU all year
004pHDAILY MX <= 8.5 SU all year
004Solids, total suspendedMO AVG <= 20 mg/L all year
004Solids, total suspendedMO AVG <= 20 mg/L all year
004Solids, total suspendedDAILY MX <= 30 mg/L all year
004Solids, total suspendedDAILY MX <= 30 mg/L all year
004Iron, total [as Fe]MO AVG <= .5 mg/L all year
004Iron, total [as Fe]MO AVG <= .5 mg/L all year
004Iron, total [as Fe]DAILY MX <= 1 mg/L all year
004Iron, total [as Fe]DAILY MX <= 1 mg/L all year
004Aluminum, total [as Al]MO AVG <= 1 mg/L all year
004Aluminum, total [as Al]MO AVG <= 1 mg/L all year
004Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
004Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Flow, 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
007pHDAILY MN >= 6 SU all year
007pHDAILY MN >= 6 SU all year
007pHDAILY MX <= 8.5 SU all year
007pHDAILY MX <= 8.5 SU all year
007Solids, total suspendedMO AVG <= 20 mg/L all year
007Solids, total suspendedMO AVG <= 20 mg/L all year
007Solids, total suspendedDAILY MX <= 30 mg/L all year
007Solids, total suspendedDAILY MX <= 30 mg/L all year
007Iron, total [as Fe]MO AVG <= .5 mg/L all year
007Iron, total [as Fe]MO AVG <= .5 mg/L all year
007Iron, total [as Fe]DAILY MX <= 1 mg/L all year
007Iron, total [as Fe]DAILY MX <= 1 mg/L all year
007Aluminum, total [as Al]MO AVG <= 1 mg/L all year
007Aluminum, total [as Al]MO AVG <= 1 mg/L all year
007Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
007Aluminum, total [as Al]DAILY MX <= 2 mg/L all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Flow, 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