ARKEMA INC

NPDES permit TX0007064 · Major NON-POTW · effective, expires 2029-01-15 · 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)
6of 67 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (57)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 110 deg F all year
001BOD, 5-day, 20 deg. CDAILY AV <= 23 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 53 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY AV report only all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
001pHMINIMUM >= 5 SU all year
001pHMAXIMUM <= 11 SU all year
001Solids, total suspendedDAILY AV <= 51 lb/d all year
001Solids, total suspendedDAILY MX <= 120 lb/d all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001ChlorobenzeneDAILY MX <= .05 mg/L all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .01 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV <= .4 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .8 MGD all year
001Chlorine, total residualDAILY MX <= .1 mg/L all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 446 min all year
002BOD, 5-day, 20 deg. CDAILY AV <= 10 mg/L all year
002BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY AV report only all year
002Solids, total suspendedDAILY MX <= 100 mg/L all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002ChlorobenzeneDAILY MX <= .05 mg/L all year
002Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .01 mg/L all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualDAILY MX <= .1 mg/L all year
003Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
004Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Flow, in conduit or thru treatment plantDAILY AV report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
005Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Flow, in conduit or thru treatment plantDAILY AV report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
101BOD, 5-day, 20 deg. CDAILY AV <= 20 mg/L all year
101BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
101Solids, total suspendedDAILY AV <= 20 mg/L all year
101Solids, total suspendedDAILY MX <= 45 mg/L all year
101Flow, in conduit or thru treatment plantDAILY AV <= .003 MGD all year
101Flow, in conduit or thru treatment plantDAILY MX <= .006 MGD all year
101Chlorine, total residualMO MIN >= 1 mg/L all year
101EnterococciDAILY AV <= 35 CFU/100mL all year
101EnterococciDAILY MX <= 104 CFU/100mL 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