MEXICHEM FLUOR INC.

NPDES permit LA0062090 · Minor NON-POTW · effective, expires 2031-02-28 · 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
99required values missing, on 12 form(s)
24of 47 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (181)

OutfallParameterStatisticLimitMonths
003BOD, 5-day, 20 deg. CMO AVG <= 96 lb/d all year
003BOD, 5-day, 20 deg. CDAILY MX <= 255 lb/d all year
003pHMINIMUM report only all year
003pHMINIMUM report only all year
003pHMAXIMUM report only all year
003pHMAXIMUM report only all year
003Solids, total suspendedMO AVG <= 121 lb/d all year
003Solids, total suspendedMO AVG <= 121 lb/d all year
003Solids, total suspendedDAILY MX <= 390 lb/d all year
003Solids, total suspendedDAILY MX <= 390 lb/d all year
003Fluoride, total [as F]MO AVG <= 109.18 lb/d all year
003Fluoride, total [as F]MO AVG <= 109.18 lb/d all year
003Fluoride, total [as F]DAILY MX <= 226.6 lb/d all year
003Fluoride, total [as F]DAILY MX <= 226.6 lb/d all year
003Arsenic, total [as As]MO AVG <= 2.06 lb/d all year
003Arsenic, total [as As]MO AVG <= 2.06 lb/d all year
003Arsenic, total [as As]DAILY MX <= 6.18 lb/d all year
003Arsenic, total [as As]DAILY MX <= 6.18 lb/d all year
003Chromium, total [as Cr]MO AVG <= 2.29 lb/d all year
003Chromium, total [as Cr]MO AVG <= 2.29 lb/d all year
003Chromium, total [as Cr]DAILY MX <= 5.71 lb/d all year
003Chromium, total [as Cr]DAILY MX <= 5.71 lb/d all year
003Zinc, total [as Zn]MO AVG <= 2.16 lb/d all year
003Zinc, total [as Zn]MO AVG <= 2.16 lb/d all year
003Zinc, total [as Zn]DAILY MX <= 5.38 lb/d all year
003Zinc, total [as Zn]DAILY MX <= 5.38 lb/d all year
003Carbon tetrachlorideMO AVG <= .29 lb/d all year
003Carbon tetrachlorideDAILY MX <= .78 lb/d all year
0031,2-DichloroethaneMO AVG <= .37 lb/d all year
0031,2-DichloroethaneDAILY MX <= 1.18 lb/d all year
003ChloroformMO AVG <= .23 lb/d all year
003ChloroformDAILY MX <= .67 lb/d all year
003TolueneMO AVG <= .06 lb/d all year
003TolueneDAILY MX <= .15 lb/d all year
003BenzeneMO AVG <= .12 lb/d all year
003BenzeneDAILY MX <= .28 lb/d all year
003AcenaphthyleneMO AVG <= .04 lb/d all year
003AcenaphthyleneDAILY MX <= .1 lb/d all year
003AcenaphtheneMO AVG <= .04 lb/d all year
003AcenaphtheneDAILY MX <= .1 lb/d all year
003AcrylonitrileMO AVG <= .19 lb/d all year
003AcrylonitrileDAILY MX <= .48 lb/d all year
003AnthraceneMO AVG <= .04 lb/d all year
003AnthraceneDAILY MX <= .1 lb/d all year
003Benzo[b]fluorantheneMO AVG <= .04 lb/d all year
003Benzo[b]fluorantheneDAILY MX <= .1 lb/d all year
003Benzo[k]fluorantheneMO AVG <= .04 lb/d all year
003Benzo[k]fluorantheneDAILY MX <= .1 lb/d all year
003Benzo[a]pyreneMO AVG <= .04 lb/d all year
003Benzo[a]pyreneDAILY MX <= .1 lb/d all year
003ChlorobenzeneMO AVG <= .29 lb/d all year
003ChlorobenzeneDAILY MX <= .78 lb/d all year
003ChryseneMO AVG <= .04 lb/d all year
003ChryseneDAILY MX <= .1 lb/d all year
003Diethyl phthalateMO AVG <= .09 lb/d all year
003Diethyl phthalateDAILY MX <= .23 lb/d all year
003Dimethyl phthalateMO AVG <= .04 lb/d all year
003Dimethyl phthalateDAILY MX <= .1 lb/d all year
003EthylbenzeneMO AVG <= .29 lb/d all year
003EthylbenzeneDAILY MX <= .78 lb/d all year
003FluorantheneMO AVG <= .05 lb/d all year
003FluorantheneDAILY MX <= .11 lb/d all year
003FluoreneMO AVG <= .4 lb/d all year
003FluoreneDAILY MX <= .1 lb/d all year
003HexachlorobutadieneMO AVG <= .29 lb/d all year
003HexachlorobutadieneDAILY MX <= .78 lb/d all year
003HexachloroethaneMO AVG <= .4 lb/d all year
003HexachloroethaneDAILY MX <= 1.64 lb/d all year
003Methyl chloride [Chloromethane]MO AVG <= .23 lb/d all year
003Methyl chloride [Chloromethane]DAILY MX <= .61 lb/d all year
003Methylene chlorideMO AVG <= .07 lb/d all year
003Methylene chlorideDAILY MX <= .35 lb/d all year
003NitrobenzeneMO AVG <= 4.61 lb/d all year
003NitrobenzeneDAILY MX <= 13.19 lb/d all year
003PhenanthreneMO AVG <= .04 lb/d all year
003PhenanthreneDAILY MX <= .1 lb/d all year
003PyreneMO AVG <= .04 lb/d all year
003PyreneDAILY MX <= .1 lb/d all year
003TetrachloroethyleneMO AVG <= .11 lb/d all year
003TetrachloroethyleneDAILY MX <= .34 lb/d all year
0031,1-DichloroethaneMO AVG <= .05 lb/d all year
0031,1-DichloroethaneDAILY MX <= .12 lb/d all year
0031,1-DichloroethyleneMO AVG <= .05 lb/d all year
0031,1-DichloroethyleneDAILY MX <= .12 lb/d all year
0031,1,1-TrichloroethaneMO AVG <= .05 lb/d all year
0031,1,1-TrichloroethaneDAILY MX <= .12 lb/d all year
0031,1,2-TrichloroethaneMO AVG <= .07 lb/d all year
0031,1,2-TrichloroethaneDAILY MX <= .26 lb/d all year
003Benzo[a]anthraceneMO AVG <= .04 lb/d all year
003Benzo[a]anthraceneDAILY MX <= .1 lb/d all year
0031,2-DichlorobenzeneMO AVG <= .4 lb/d all year
0031,2-DichlorobenzeneDAILY MX <= 1.64 lb/d all year
0031,2-DichloropropaneMO AVG <= .4 lb/d all year
0031,2-DichloropropaneDAILY MX <= 1.64 lb/d all year
003trans-1,2-DichloroethyleneMO AVG <= .05 lb/d all year
003trans-1,2-DichloroethyleneDAILY MX <= .14 lb/d all year
0031,2,4-TrichlorobenzeneMO AVG <= .4 lb/d all year
0031,2,4-TrichlorobenzeneDAILY MX <= 1.64 lb/d all year
0031,3-DichlorobenzeneMO AVG <= .29 lb/d all year
0031,3-DichlorobenzeneDAILY MX <= .78 lb/d all year
0031,4-DichlorobenzeneMO AVG <= .29 lb/d all year
0031,4-DichlorobenzeneDAILY MX <= .78 lb/d all year
0032-NitrophenolMO AVG <= .13 lb/d all year
0032-NitrophenolDAILY MX <= .48 lb/d all year
0032,4-DimethylphenolMO AVG <= .04 lb/d all year
0032,4-DimethylphenolDAILY MX <= .1 lb/d all year
0032,4-DinitrophenolMO AVG <= 2.49 lb/d all year
0032,4-DinitrophenolDAILY MX <= 8.84 lb/d all year
0034-NitrophenolMO AVG <= .33 lb/d all year
0034-NitrophenolDAILY MX <= 1.19 lb/d all year
0034,6-Dinitro-o-cresolMO AVG <= .16 lb/d all year
0034,6-Dinitro-o-cresolDAILY MX <= .57 lb/d all year
003PhenolMO AVG <= .04 lb/d all year
003PhenolDAILY MX <= .1 lb/d all year
003NaphthaleneMO AVG <= .04 lb/d all year
003NaphthaleneDAILY MX <= .1 lb/d all year
003Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= .2 lb/d all year
003Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .53 lb/d all year
003Di-n-butyl phthalateMO AVG <= .045 lb/d all year
003Di-n-butyl phthalateDAILY MX <= .09 lb/d all year
003Vinyl chlorideMO AVG <= .2 lb/d all year
003Vinyl chlorideDAILY MX <= .35 lb/d all year
003TrichloroethyleneMO AVG <= .05 lb/d all year
003TrichloroethyleneDAILY MX <= .14 lb/d all year
003HexachlorobenzeneMO AVG <= .02 lb/d all year
003HexachlorobenzeneDAILY MX <= .05 lb/d all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
0031,3-DichloropropyleneMO AVG <= .4 lb/d all year
0031,3-DichloropropyleneDAILY MX <= 1.64 lb/d all year
003pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
003pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
003pH range excursions, monthly total accumMO TOTAL <= 446 min all year
003pH range excursions, monthly total accumMO TOTAL <= 446 min all year
003ChloroethaneMO AVG <= .23 lb/d all year
003ChloroethaneDAILY MX <= .61 lb/d all year
004pHMINIMUM report only all year
004pHMINIMUM report only all year
004pHMAXIMUM report only all year
004pHMAXIMUM report only all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 50 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
004pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
004pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
004pH range excursions, monthly total accumMO TOTAL <= 446 min all year
004pH range excursions, monthly total accumMO TOTAL <= 446 min all year
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Carbon, tot organic [TOC]DAILY MX <= 50 mg/L 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
006pHINST MIN >= 6 SU all year
006pHINST MAX <= 9 SU all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Carbon, tot organic [TOC]DAILY MX <= 50 mg/L 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
007pHINST MIN >= 6 SU all year
007pHINST MAX <= 9 SU all year
007Oil & GreaseDAILY MX <= 15 mg/L all year
007Carbon, tot organic [TOC]DAILY MX <= 50 mg/L 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
108pHINST MIN >= 6 SU all year
108pHINST MAX <= 9 SU all year
108Solids, total suspendedMO AVG <= 90 mg/L all year
108Solids, total suspendedDAILY MX <= 90 mg/L all year
108Oil & GreaseDAILY MX <= 15 mg/L all year
108Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
108Lead, total [as Pb]DAILY MX <= 50 ug/L all year
108BenzeneDAILY MX <= 50 ug/L all year
108BTEXDAILY MX <= 250 ug/L all year
108Flow, in conduit or thru treatment plantMO AVG report only all year
108Flow, 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