Evonik Corporation

NPDES permit TN0001996 · Minor NON-POTW · effective, expires 2027-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

1values over a limit
0required values missing, on 0 form(s)
1of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: Solids, total suspended (1).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (20)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001pHDAILY MN >= 6 SU (alert) all year
001pHDAILY MX <= 9 SU (alert) all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 40 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Aluminum, total [as Al]MO AVG <= 1.1 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 2.9 mg/L 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
001Solids, total dissolvedDAILY MX report only all year
001SulfateMO AVG <= 17500 lb/d all year
001SulfateDAILY MX <= 20000 lb/d all year
001pH range excursions, > 60 minutesVALUE < 1 occur/mo all year
001pH range excursions, monthly total accumVALUE <= 446 min all year
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM > 9.6 % all year
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM > 9.6 % 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