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Golden Triangle Polymers Company LLC

Plastics Materials And Resins, The Woodlands, Texas. NPDES permit TX0144690, in force until Sep 17, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (14 values), outfall 101 form A monthly (8 values), outfall 001 form Y yearly
Last report on file
August 2026

Limits in force (160)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Oxygen demand, chem. [high level] [COD]daily average≤ 264 lb/dall year001
Oxygen demand, chem. [high level] [COD]daily maximum≤ 528 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 1045 lb/dall year001
Solids, total suspendeddaily maximum≤ 2304 lb/dall year001
Oil & Greasedaily average≤ 332 lb/dall year001
Oil & Greasedaily maximum≤ 417 lb/dall year001
Carbon tetrachloridedaily average≤ .06 lb/dall year001
Carbon tetrachloridedaily maximum≤ .12 lb/dall year001
1,2-Dichloroethanedaily average≤ .21 lb/dall year001
1,2-Dichloroethanedaily maximum≤ .65 lb/dall year001
Chloroformdaily average≤ 1.62 lb/dall year001
Chloroformdaily average≤ .06 lb/dall year001
Chloroformdaily maximum≤ 4.7 lb/dall year001
Chloroformdaily maximum≤ .14 lb/dall year001
Toluenedaily average≤ .08 lb/dall year001
Toluenedaily maximum≤ .25 lb/dall year001
Benzenedaily average≤ .11 lb/dall year001
Benzenedaily maximum≤ .42 lb/dall year001
Acenaphthylenedaily average≤ .07 lb/dall year001
Acenaphthylenedaily maximum≤ .18 lb/dall year001
Acenaphthenedaily average≤ .07 lb/dall year001
Acenaphthenedaily maximum≤ .18 lb/dall year001
Acrylonitriledaily average≤ .3 lb/dall year001
Acrylonitriledaily maximum≤ .75 lb/dall year001
Anthracenedaily average≤ .07 lb/dall year001
Anthracenedaily maximum≤ .18 lb/dall year001
Benzo[b]fluoranthenedaily average≤ .07 lb/dall year001
Benzo[b]fluoranthenedaily maximum≤ .19 lb/dall year001
Benzo[k]fluoranthenedaily average≤ .07 lb/dall year001
Benzo[k]fluoranthenedaily maximum≤ .18 lb/dall year001
Benzo[a]pyrenedaily average≤ .07 lb/dall year001
Benzo[a]pyrenedaily maximum≤ .0019 lb/dall year001
Chlorobenzenedaily average≤ .05 lb/dall year001
Chlorobenzenedaily maximum≤ .09 lb/dall year001
Chrysenedaily average≤ .07 lb/dall year001
Chrysenedaily maximum≤ .18 lb/dall year001
Diethyl phthalatedaily average≤ .25 lb/dall year001
Diethyl phthalatedaily maximum≤ .63 lb/dall year001
Dimethyl phthalatedaily average≤ .06 lb/dall year001
Dimethyl phthalatedaily maximum≤ .15 lb/dall year001
Fluoranthenedaily average≤ .08 lb/dall year001
Fluoranthenedaily maximum≤ .21 lb/dall year001
Fluorenedaily average≤ .07 lb/dall year001
Fluorenedaily maximum≤ .18 lb/dall year001
Hexachlorobutadienedaily average≤ .06 lb/dall year001
Hexachlorobutadienedaily maximum≤ .15 lb/dall year001
Hexachloroethanedaily average≤ .06 lb/dall year001
Hexachloroethanedaily maximum≤ .17 lb/dall year001
Methyl chloride [Chloromethane]daily average≤ .27 lb/dall year001
Methyl chloride [Chloromethane]daily maximum≤ .59 lb/dall year001
Methylene chloridedaily average≤ .12 lb/dall year001
Methylene chloridedaily maximum≤ .27 lb/dall year001
Nitrobenzenedaily average≤ .08 lb/dall year001
Nitrobenzenedaily maximum≤ .21 lb/dall year001
Phenanthrenedaily average≤ .07 lb/dall year001
Phenanthrenedaily maximum≤ .18 lb/dall year001
Pyrenedaily average≤ .08 lb/dall year001
Pyrenedaily maximum≤ .21 lb/dall year001
Tetrachloroethylenedaily average≤ .07 lb/dall year001
Tetrachloroethylenedaily maximum≤ .17 lb/dall year001
1,1-Dichloroethanedaily average≤ .07 lb/dall year001
1,1-Dichloroethanedaily maximum≤ .18 lb/dall year001
1,1-Dichloroethylenedaily average≤ .05 lb/dall year001
1,1-Dichloroethylenedaily maximum≤ .08 lb/dall year001
1,1,1-Trichloroethanedaily average≤ .06 lb/dall year001
1,1,1-Trichloroethanedaily maximum≤ .17 lb/dall year001
1,1,2-Trichloroethanedaily average≤ .06 lb/dall year001
1,1,2-Trichloroethanedaily maximum≤ .17 lb/dall year001
Benzo[a]anthracenedaily average≤ .07 lb/dall year001
Benzo[a]anthracenedaily maximum≤ .18 lb/dall year001
1,2-Dichlorobenzenedaily average≤ .24 lb/dall year001
1,2-Dichlorobenzenedaily maximum≤ .5 lb/dall year001
1,2-Dichloropropanedaily average≤ .47 lb/dall year001
1,2-Dichloropropanedaily maximum≤ .71 lb/dall year001
trans-1,2-Dichloroethylenedaily average≤ .06 lb/dall year001
trans-1,2-Dichloroethylenedaily maximum≤ .17 lb/dall year001
1,2,4-Trichlorobenzenedaily average≤ .21 lb/dall year001
1,2,4-Trichlorobenzenedaily maximum≤ .43 lb/dall year001
1,3-Dichlorobenzenedaily average≤ .1 lb/dall year001
1,3-Dichlorobenzenedaily maximum≤ .14 lb/dall year001
1,4-Dichlorobenzenedaily average≤ .05 lb/dall year001
1,4-Dichlorobenzenedaily maximum≤ .09 lb/dall year001
2-Chlorophenoldaily average≤ .1 lb/dall year001
2-Chlorophenoldaily maximum≤ .3 lb/dall year001
2-Nitrophenoldaily average≤ .13 lb/dall year001
2-Nitrophenoldaily maximum≤ .21 lb/dall year001
2,4-Dichlorophenoldaily average≤ .12 lb/dall year001
2,4-Dichlorophenoldaily maximum≤ .35 lb/dall year001
2,4-Dimethylphenoldaily average≤ .06 lb/dall year001
2,4-Dimethylphenoldaily maximum≤ .11 lb/dall year001
2,4-Dinitrotoluenedaily average≤ .35 lb/dall year001
2,4-Dinitrotoluenedaily maximum≤ .88 lb/dall year001
2,4-Dinitrophenoldaily average≤ .22 lb/dall year001
2,4-Dinitrophenoldaily maximum≤ .38 lb/dall year001
2,6-Dinitrotoluenedaily average≤ .79 lb/dall year001
2,6-Dinitrotoluenedaily maximum≤ 1.98 lb/dall year001
4-Nitrophenoldaily average≤ .22 lb/dall year001
4-Nitrophenoldaily maximum≤ .38 lb/dall year001
4,6-Dinitro-o-cresoldaily average≤ .24 lb/dall year001
4,6-Dinitro-o-cresoldaily maximum≤ .86 lb/dall year001
Phenoldaily average≤ .05 lb/dall year001
Phenoldaily maximum≤ .08 lb/dall year001
Naphthalenedaily average≤ .07 lb/dall year001
Naphthalenedaily maximum≤ .18 lb/dall year001
Ethylbenzenedaily average≤ .1 lb/dall year001
Ethylbenzenedaily maximum≤ .33 lb/dall year001
Di-n-butyl phthalatedaily average≤ .08 lb/dall year001
Di-n-butyl phthalatedaily maximum≤ .18 lb/dall year001
Vinyl chloridedaily average≤ .32 lb/dall year001
Vinyl chloridedaily maximum≤ .83 lb/dall year001
Trichloroethylenedaily average≤ .06 lb/dall year001
Trichloroethylenedaily maximum≤ .17 lb/dall year001
Hexachlorobenzenedaily average≤ .05 lb/dall year001
Hexachlorobenzenedaily maximum≤ .09 lb/dall year001
BTEXdaily average≤ .32 lb/dall year001
BTEXdaily maximum≤ .86 lb/dall year001
Flow, in conduit or thru treatment plantdaily average≤ 2.65 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 3.15 MGDall year001
1,3-Dichloropropylenedaily average≤ .09 lb/dall year001
1,3-Dichloropropylenedaily maximum≤ .14 lb/dall year001
Chloroethanedaily average≤ .32 lb/dall year001
Chloroethanedaily maximum≤ .83 lb/dall year001
BOD, 5-day, 20 deg. Cdaily average≤ 124 lb/dall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 248 lb/dall year101
pHminimum≥ 6 SUall year101
pHmaximum≤ 9 SUall year101
Solids, total suspendeddaily average≤ 624 lb/dall year101
Solids, total suspendeddaily maximum≤ 902 lb/dall year101
Flow, in conduit or thru treatment plantdaily average≤ .97 MGDall year101
Flow, in conduit or thru treatment plantdaily maximum≤ .99 MGDall year101
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)monthly average minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllinamonthly average minimumreport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)monthly average minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllinamonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)monthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinamonthly average minimumreport only (%)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)monthly average minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinamonthly average minimumreport only (pass=0;fail=1)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)monthly average minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllinamonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)monthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllinamonthly average minimumreport only (%)all yearTX1
LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)single samplereport only (pass=0;fail=1)all yearTXA
LC50 Pass/Fail Static 24Hr Acute Menidia beryllinasingle samplereport only (pass=0;fail=1)all yearTXA

New limits from Nov 1, 2026

ParameterNew limitNew or tighterMedian, last 12 months× new limit
BOD, 5-day, 20 deg. C, daily average528 lb/dnew——
BOD, 5-day, 20 deg. C, daily maximum1112 lb/dnew——

Cited limits by parameter: Texas's rules and the federal ones.

Same industry: the 165 Chemicals and Allied Products permits in Texas.

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