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Ascend Performance Materials Texas Inc

Industrial Organic Chemicals, major discharger, Alvin, Texas. NPDES permit TX0003875 expired Mar 12, 2025; its limits still apply. Last 12 months: over a limit 4 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (12 values), outfall 002 form A monthly (8 values), outfall 003 form A monthly (8 values), outfall 004 form A monthly (6 values), outfall 005 form A monthly (6 values), outfall 006 form A monthly (6 values), and 7 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
4 values over a limit, 120 required values missing, 8 of 106 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingOutfallParameterReportedLimitOver by
March 2026101Chloroform, daily average.264 lb/d≤ .14 lb/d89%
June 2026003Carbon, tot organic [TOC], daily maximum163.7 mg/L≤ 75 mg/L118%
June 2026007pH, maximum9.1 SU≤ 9 SU—
August 2026101Solids, total suspended, daily maximum1694.7 lb/d≤ 1028 lb/d65%

Limits in force (219)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily average≤ 100 deg Fall year001
Temperature, water deg. fahrenheitdaily maximum≤ 103 deg Fall year001
BOD, 5-day, 20 deg. Cdaily averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Nitrogen, ammonia total [as N]daily averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Carbon, tot organic [TOC]daily maximum≤ 200 mg/Lall year001
Copper, total [as Cu]daily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantdaily average≤ 7.8 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 11 MGDall year001
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year002
Zinc, total [as Zn]daily averagereport only (mg/L)all year002
Zinc, total [as Zn]daily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Oil & Greasedaily maximum≤ 15 mg/Lall year003
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year003
Zinc, total [as Zn]daily averagereport only (mg/L)all year003
Zinc, total [as Zn]daily maximumreport only (mg/L)all year003
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
pHminimum≥ 6 SUall year004
pHmaximum≤ 9 SUall year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year004
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
pHminimum≥ 6 SUall year005
pHmaximum≤ 9 SUall year005
Oil & Greasedaily maximum≤ 15 mg/Lall year005
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year005
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
pHminimum≥ 6 SUall year006
pHmaximum≤ 9 SUall year006
Oil & Greasedaily maximum≤ 15 mg/Lall year006
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year006
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
pHminimum≥ 6 SUall year007
pHmaximum≤ 9 SUall year007
Oil & Greasedaily maximum≤ 15 mg/Lall year007
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year007
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007
BOD, 5-day, 20 deg. Cdaily average≤ 213 lb/dall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 574 lb/dall year101
Solids, total suspendeddaily average≤ 314 lb/dall year101
Solids, total suspendeddaily maximum≤ 1028 lb/dall year101
Carbon, tot organic [TOC]daily average≤ 2452 lb/dall year101
Carbon, tot organic [TOC]daily maximum≤ 4378 lb/dall year101
Carbon tetrachloridedaily average≤ .12 lb/dall year101
Carbon tetrachloridedaily maximum≤ .25 lb/dall year101
1,2-Dichloroethanedaily average≤ .45 lb/dall year101
1,2-Dichloroethanedaily maximum≤ 1.41 lb/dall year101
Chloroformdaily average≤ .14 lb/dall year101
Chloroformdaily maximum≤ .31 lb/dall year101
Toluenedaily average≤ .17 lb/dall year101
Toluenedaily maximum≤ .53 lb/dall year101
Benzenedaily average≤ .25 lb/dall year101
Benzenedaily maximum≤ .91 lb/dall year101
Acenaphthylenedaily average≤ .15 lb/dall year101
Acenaphthylenedaily maximum≤ .39 lb/dall year101
Acenaphthenedaily average≤ .15 lb/dall year101
Acenaphthenedaily maximum≤ .39 lb/dall year101
Acrylonitriledaily average≤ .64 lb/dall year101
Acrylonitriledaily maximum≤ 1.62 lb/dall year101
Anthracenedaily average≤ .15 lb/dall year101
Anthracenedaily maximum≤ .39 lb/dall year101
Benzo[k]fluoranthenedaily average≤ .15 lb/dall year101
Benzo[k]fluoranthenedaily maximum≤ .39 lb/dall year101
Benzo[a]pyrenedaily average≤ .000188 mg/Lall year101
Benzo[a]pyrenedaily maximum≤ .000399 mg/Lall year101
Benzo[a]pyrenedaily average≤ .0053 lb/dall year101
Benzo[a]pyrenedaily maximum≤ .0112 lb/dall year101
Chlorobenzenedaily average≤ .1 lb/dall year101
Chlorobenzenedaily maximum≤ .19 lb/dall year101
Chrysenedaily average≤ .15 lb/dall year101
Chrysenedaily maximum≤ .39 lb/dall year101
Diethyl phthalatedaily average≤ .54 lb/dall year101
Diethyl phthalatedaily maximum≤ 1.36 lb/dall year101
Dimethyl phthalatedaily average≤ .13 lb/dall year101
Dimethyl phthalatedaily maximum≤ .31 lb/dall year101
Ethylbenzenedaily average≤ .21 lb/dall year101
Ethylbenzenedaily maximum≤ .72 lb/dall year101
Fluoranthenedaily average≤ .17 lb/dall year101
Fluoranthenedaily maximum≤ .45 lb/dall year101
Fluorenedaily average≤ .15 lb/dall year101
Fluorenedaily maximum≤ .39 lb/dall year101
Hexachlorobutadienedaily average≤ .13 lb/dall year101
Hexachlorobutadienedaily maximum≤ .33 lb/dall year101
Hexachloroethanedaily average≤ .14 lb/dall year101
Hexachloroethanedaily maximum≤ .36 lb/dall year101
Methyl chloride [Chloromethane]daily average≤ .57 lb/dall year101
Methyl chloride [Chloromethane]daily maximum≤ 1.27 lb/dall year101
Methylene chloridedaily average≤ .27 lb/dall year101
Methylene chloridedaily maximum≤ .59 lb/dall year101
Nitrobenzenedaily average≤ .18 lb/dall year101
Nitrobenzenedaily maximum≤ .45 lb/dall year101
Phenanthrenedaily average≤ .15 lb/dall year101
Phenanthrenedaily maximum≤ .39 lb/dall year101
Pyrenedaily average≤ .17 lb/dall year101
Pyrenedaily maximum≤ .45 lb/dall year101
Tetrachloroethylenedaily average≤ .15 lb/dall year101
Tetrachloroethylenedaily maximum≤ .37 lb/dall year101
1,1-Dichloroethanedaily average≤ .15 lb/dall year101
1,1-Dichloroethanedaily maximum≤ .39 lb/dall year101
1,1-Dichloroethylenedaily average≤ .11 lb/dall year101
1,1-Dichloroethylenedaily maximum≤ .17 lb/dall year101
1,1,1-Trichloroethanedaily average≤ .14 lb/dall year101
1,1,1-Trichloroethanedaily maximum≤ .36 lb/dall year101
1,1,2-Trichloroethanedaily average≤ .14 lb/dall year101
1,1,2-Trichloroethanedaily maximum≤ .36 lb/dall year101
Benzo[a]anthracenedaily average≤ .00188 mg/Lall year101
Benzo[a]anthracenedaily maximum≤ .00399 mg/Lall year101
Benzo[a]anthracenedaily average≤ .053 lb/dall year101
Benzo[a]anthracenedaily maximum≤ .112 lb/dall year101
1,2-Dichlorobenzenedaily average≤ .51 lb/dall year101
1,2-Dichlorobenzenedaily maximum≤ 1.09 lb/dall year101
1,2-Dichloropropanedaily average≤ 1.02 lb/dall year101
1,2-Dichloropropanedaily maximum≤ 1.54 lb/dall year101
trans-1,2-Dichloroethylenedaily average≤ .14 lb/dall year101
trans-1,2-Dichloroethylenedaily maximum≤ .36 lb/dall year101
1,2,4-Trichlorobenzenedaily average≤ .45 lb/dall year101
1,2,4-Trichlorobenzenedaily maximum≤ .93 lb/dall year101
1,3-Dichlorobenzenedaily average≤ .21 lb/dall year101
1,3-Dichlorobenzenedaily maximum≤ .29 lb/dall year101
1,4-Dichlorobenzenedaily average≤ .1 lb/dall year101
1,4-Dichlorobenzenedaily maximum≤ .19 lb/dall year101
2-Chlorophenoldaily average≤ .21 lb/dall year101
2-Chlorophenoldaily maximum≤ .65 lb/dall year101
2-Nitrophenoldaily average≤ .27 lb/dall year101
2-Nitrophenoldaily maximum≤ .46 lb/dall year101
2,4-Dichlorophenoldaily average≤ .26 lb/dall year101
2,4-Dichlorophenoldaily maximum≤ .75 lb/dall year101
2,4-Dimethylphenoldaily average≤ .12 lb/dall year101
2,4-Dimethylphenoldaily maximum≤ .24 lb/dall year101
2,4-Dinitrotoluenedaily average≤ .75 lb/dall year101
2,4-Dinitrotoluenedaily maximum≤ 1.9 lb/dall year101
2,4-Dinitrophenoldaily average≤ .47 lb/dall year101
2,4-Dinitrophenoldaily maximum≤ .82 lb/dall year101
2,6-Dinitrotoluenedaily average≤ 1.7 lb/dall year101
2,6-Dinitrotoluenedaily maximum≤ 4.28 lb/dall year101
4-Nitrophenoldaily average≤ .48 lb/dall year101
4-Nitrophenoldaily maximum≤ .83 lb/dall year101
4,6-Dinitro-o-cresoldaily average≤ .52 lb/dall year101
4,6-Dinitro-o-cresoldaily maximum≤ 1.85 lb/dall year101
Phenoldaily average≤ .1 lb/dall year101
Phenoldaily maximum≤ .17 lb/dall year101
Naphthalenedaily average≤ .15 lb/dall year101
Naphthalenedaily maximum≤ .39 lb/dall year101
Di[2-ethylhexyl] phthalate [DEHP]daily average≤ .69 lb/dall year101
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 1.86 lb/dall year101
Di-n-butyl phthalatedaily average≤ .18 lb/dall year101
Di-n-butyl phthalatedaily maximum≤ .38 lb/dall year101
Vinyl chloridedaily average≤ .69 lb/dall year101
Vinyl chloridedaily maximum≤ 1.79 lb/dall year101
Trichloroethylenedaily average≤ .14 lb/dall year101
Trichloroethylenedaily maximum≤ .36 lb/dall year101
Hexachlorobenzenedaily average≤ .000051 mg/Lall year101
Hexachlorobenzenedaily maximum≤ .00011 mg/Lall year101
Hexachlorobenzenedaily average≤ .0014 lb/dall year101
Hexachlorobenzenedaily maximum≤ .00305 lb/dall year101
Flow, in conduit or thru treatment plantdaily average≤ 4 MGDall year101
Flow, in conduit or thru treatment plantdaily maximum≤ 6 MGDall year101
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year101
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year101
1,3-Dichloropropylenedaily average≤ .19 lb/dall year101
1,3-Dichloropropylenedaily maximum≤ .29 lb/dall year101
Enterococcidaily average≤ 35 CFU/100mLall year101
Enterococcidaily maximum≤ 89 CFU/100mLall year101
3,4-Benzofluoranthenedaily average≤ .15 lb/dall year101
3,4-Benzofluoranthenedaily maximum≤ .41 lb/dall year101
Chloroethanedaily average≤ .69 lb/dall year101
Chloroethanedaily maximum≤ 1.79 lb/dall year101
Whole effluent toxicity - retest #17-day minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #27-day minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all yearTX1
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
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 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
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
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 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
Whole effluent toxicity - retest #17-day minimumreport only (pass=0;fail=1)all yearTXA
Whole effluent toxicity - retest #1single samplereport only (pass=0;fail=1)all yearTXA
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all yearTXA
Whole effluent toxicity - retest #27-day minimumreport only (pass=0;fail=1)all yearTXA
Whole effluent toxicity - retest #2single samplereport only (pass=0;fail=1)all yearTXA
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all yearTXA
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 menidiasingle samplereport only (pass=0;fail=1)all yearTXA
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (pass=0;fail=1)all yearTXA
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (pass=0;fail=1)all yearTXA
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (%)all yearTXA
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (%)all yearTXA
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (%)all yearTXA
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (%)all yearTXA
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (pass=0;fail=1)all yearTXA
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (pass=0;fail=1)all yearTXA
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (%)all yearTXA
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (%)all yearTXA
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (%)all yearTXA
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (%)all yearTXA

How strict are these limits?

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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Your permit document is the final word. As JSON: /api/v1/permits/TX0003875 · MCP: https://passage-data.com/mcp