Omya Alabama, a Division of Omya Inc.

NPDES permit AL0074977 · Minor NON-POTW · administratively continued, expires 2019-03-31 · 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.

This permit expired on 2019-03-31 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 62 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 (58)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 25 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG <= 8.34 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspendedMO AVG <= 25 mg/L all year
002Solids, total suspendedDAILY MX <= 45 mg/L 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
003pHDAILY MN >= 6 SU all year
003pHDAILY MX <= 8.5 SU all year
003Solids, total suspendedMO AVG <= 25 mg/L all year
003Solids, total suspendedDAILY MX <= 45 mg/L all year
003Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
003Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
003Nitrite + Nitrate total [as N]MO AVG report only all year
003Nitrite + Nitrate total [as N]DAILY MX report only all year
003Phosphorus, total [as P]MO AVG <= 8.34 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
003Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Nov, Dec
003Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
003Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Nov, Dec
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 all year
003Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 0 pass=0;fail=1 all year
008pHDAILY MN >= 6 SU all year
008pHDAILY MX <= 9 SU all year
008Solids, total suspendedMO AVG <= 25 mg/L all year
008Solids, total suspendedDAILY MX <= 45 mg/L all year
008Flow, in conduit or thru treatment plantMO AVG report only all year
008Flow, in conduit or thru treatment plantDAILY MX report only all year
009pHDAILY MN >= 6 SU all year
009pHDAILY MX <= 8.5 SU all year
009Solids, total suspendedMO AVG <= 25 mg/L all year
009Solids, total suspendedDAILY MX <= 45 mg/L all year
009Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
009Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
009Nitrite + Nitrate total [as N]MO AVG report only all year
009Nitrite + Nitrate total [as N]DAILY MX report only all year
009Phosphorus, total [as P]MO AVG <= 8.34 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
009Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Nov, Dec
009Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
009Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Nov, Dec
009Flow, in conduit or thru treatment plantMO AVG report only all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
009Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 all year
009Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 0 pass=0;fail=1 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