ASCEND PERFORMANCE MATERIALS TEXAS INC

NPDES permit TX0003875 · Major NON-POTW · administratively continued, expires 2025-03-12 · 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.

This permit expired on 2025-03-12 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

4values over a limit
0required values missing, on 0 form(s)
0of 106 forms filed late

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

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 (219)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY AV <= 100 deg F all year
001Temperature, water deg. fahrenheitDAILY MX <= 103 deg F all year
001BOD, 5-day, 20 deg. CDAILY AV report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Nitrogen, ammonia total [as N]DAILY AV report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Carbon, tot organic [TOC]DAILY MX <= 200 mg/L all year
001Copper, total [as Cu]DAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY AV <= 7.8 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 11 MGD all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 75 mg/L all year
002Zinc, total [as Zn]DAILY AV report only all year
002Zinc, total [as Zn]DAILY MX report only 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
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Carbon, tot organic [TOC]DAILY MX <= 75 mg/L all year
003Zinc, total [as Zn]DAILY AV report only all year
003Zinc, total [as Zn]DAILY MX report only 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
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 75 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
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Carbon, tot organic [TOC]DAILY MX <= 75 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
006pHMINIMUM >= 6 SU all year
006pHMAXIMUM <= 9 SU all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Carbon, tot organic [TOC]DAILY MX <= 75 mg/L all year
006Flow, in conduit or thru treatment plantDAILY AV report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
007pHMINIMUM >= 6 SU all year
007pHMAXIMUM <= 9 SU all year
007Oil & GreaseDAILY MX <= 15 mg/L all year
007Carbon, tot organic [TOC]DAILY MX <= 75 mg/L all year
007Flow, in conduit or thru treatment plantDAILY AV report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
101BOD, 5-day, 20 deg. CDAILY AV <= 213 lb/d all year
101BOD, 5-day, 20 deg. CDAILY MX <= 574 lb/d all year
101Solids, total suspendedDAILY AV <= 314 lb/d all year
101Solids, total suspendedDAILY MX <= 1028 lb/d all year
101Carbon, tot organic [TOC]DAILY AV <= 2452 lb/d all year
101Carbon, tot organic [TOC]DAILY MX <= 4378 lb/d all year
101Carbon tetrachlorideDAILY AV <= .12 lb/d all year
101Carbon tetrachlorideDAILY MX <= .25 lb/d all year
1011,2-DichloroethaneDAILY AV <= .45 lb/d all year
1011,2-DichloroethaneDAILY MX <= 1.41 lb/d all year
101ChloroformDAILY AV <= .14 lb/d all year
101ChloroformDAILY MX <= .31 lb/d all year
101TolueneDAILY AV <= .17 lb/d all year
101TolueneDAILY MX <= .53 lb/d all year
101BenzeneDAILY AV <= .25 lb/d all year
101BenzeneDAILY MX <= .91 lb/d all year
101AcenaphthyleneDAILY AV <= .15 lb/d all year
101AcenaphthyleneDAILY MX <= .39 lb/d all year
101AcenaphtheneDAILY AV <= .15 lb/d all year
101AcenaphtheneDAILY MX <= .39 lb/d all year
101AcrylonitrileDAILY AV <= .64 lb/d all year
101AcrylonitrileDAILY MX <= 1.62 lb/d all year
101AnthraceneDAILY AV <= .15 lb/d all year
101AnthraceneDAILY MX <= .39 lb/d all year
101Benzo[k]fluorantheneDAILY AV <= .15 lb/d all year
101Benzo[k]fluorantheneDAILY MX <= .39 lb/d all year
101Benzo[a]pyreneDAILY AV <= .000188 mg/L all year
101Benzo[a]pyreneDAILY MX <= .000399 mg/L all year
101Benzo[a]pyreneDAILY AV <= .0053 lb/d all year
101Benzo[a]pyreneDAILY MX <= .0112 lb/d all year
101ChlorobenzeneDAILY AV <= .1 lb/d all year
101ChlorobenzeneDAILY MX <= .19 lb/d all year
101ChryseneDAILY AV <= .15 lb/d all year
101ChryseneDAILY MX <= .39 lb/d all year
101Diethyl phthalateDAILY AV <= .54 lb/d all year
101Diethyl phthalateDAILY MX <= 1.36 lb/d all year
101Dimethyl phthalateDAILY AV <= .13 lb/d all year
101Dimethyl phthalateDAILY MX <= .31 lb/d all year
101EthylbenzeneDAILY AV <= .21 lb/d all year
101EthylbenzeneDAILY MX <= .72 lb/d all year
101FluorantheneDAILY AV <= .17 lb/d all year
101FluorantheneDAILY MX <= .45 lb/d all year
101FluoreneDAILY AV <= .15 lb/d all year
101FluoreneDAILY MX <= .39 lb/d all year
101HexachlorobutadieneDAILY AV <= .13 lb/d all year
101HexachlorobutadieneDAILY MX <= .33 lb/d all year
101HexachloroethaneDAILY AV <= .14 lb/d all year
101HexachloroethaneDAILY MX <= .36 lb/d all year
101Methyl chloride [Chloromethane]DAILY AV <= .57 lb/d all year
101Methyl chloride [Chloromethane]DAILY MX <= 1.27 lb/d all year
101Methylene chlorideDAILY AV <= .27 lb/d all year
101Methylene chlorideDAILY MX <= .59 lb/d all year
101NitrobenzeneDAILY AV <= .18 lb/d all year
101NitrobenzeneDAILY MX <= .45 lb/d all year
101PhenanthreneDAILY AV <= .15 lb/d all year
101PhenanthreneDAILY MX <= .39 lb/d all year
101PyreneDAILY AV <= .17 lb/d all year
101PyreneDAILY MX <= .45 lb/d all year
101TetrachloroethyleneDAILY AV <= .15 lb/d all year
101TetrachloroethyleneDAILY MX <= .37 lb/d all year
1011,1-DichloroethaneDAILY AV <= .15 lb/d all year
1011,1-DichloroethaneDAILY MX <= .39 lb/d all year
1011,1-DichloroethyleneDAILY AV <= .11 lb/d all year
1011,1-DichloroethyleneDAILY MX <= .17 lb/d all year
1011,1,1-TrichloroethaneDAILY AV <= .14 lb/d all year
1011,1,1-TrichloroethaneDAILY MX <= .36 lb/d all year
1011,1,2-TrichloroethaneDAILY AV <= .14 lb/d all year
1011,1,2-TrichloroethaneDAILY MX <= .36 lb/d all year
101Benzo[a]anthraceneDAILY AV <= .00188 mg/L all year
101Benzo[a]anthraceneDAILY MX <= .00399 mg/L all year
101Benzo[a]anthraceneDAILY AV <= .053 lb/d all year
101Benzo[a]anthraceneDAILY MX <= .112 lb/d all year
1011,2-DichlorobenzeneDAILY AV <= .51 lb/d all year
1011,2-DichlorobenzeneDAILY MX <= 1.09 lb/d all year
1011,2-DichloropropaneDAILY AV <= 1.02 lb/d all year
1011,2-DichloropropaneDAILY MX <= 1.54 lb/d all year
101trans-1,2-DichloroethyleneDAILY AV <= .14 lb/d all year
101trans-1,2-DichloroethyleneDAILY MX <= .36 lb/d all year
1011,2,4-TrichlorobenzeneDAILY AV <= .45 lb/d all year
1011,2,4-TrichlorobenzeneDAILY MX <= .93 lb/d all year
1011,3-DichlorobenzeneDAILY AV <= .21 lb/d all year
1011,3-DichlorobenzeneDAILY MX <= .29 lb/d all year
1011,4-DichlorobenzeneDAILY AV <= .1 lb/d all year
1011,4-DichlorobenzeneDAILY MX <= .19 lb/d all year
1012-ChlorophenolDAILY AV <= .21 lb/d all year
1012-ChlorophenolDAILY MX <= .65 lb/d all year
1012-NitrophenolDAILY AV <= .27 lb/d all year
1012-NitrophenolDAILY MX <= .46 lb/d all year
1012,4-DichlorophenolDAILY AV <= .26 lb/d all year
1012,4-DichlorophenolDAILY MX <= .75 lb/d all year
1012,4-DimethylphenolDAILY AV <= .12 lb/d all year
1012,4-DimethylphenolDAILY MX <= .24 lb/d all year
1012,4-DinitrotolueneDAILY AV <= .75 lb/d all year
1012,4-DinitrotolueneDAILY MX <= 1.9 lb/d all year
1012,4-DinitrophenolDAILY AV <= .47 lb/d all year
1012,4-DinitrophenolDAILY MX <= .82 lb/d all year
1012,6-DinitrotolueneDAILY AV <= 1.7 lb/d all year
1012,6-DinitrotolueneDAILY MX <= 4.28 lb/d all year
1014-NitrophenolDAILY AV <= .48 lb/d all year
1014-NitrophenolDAILY MX <= .83 lb/d all year
1014,6-Dinitro-o-cresolDAILY AV <= .52 lb/d all year
1014,6-Dinitro-o-cresolDAILY MX <= 1.85 lb/d all year
101PhenolDAILY AV <= .1 lb/d all year
101PhenolDAILY MX <= .17 lb/d all year
101NaphthaleneDAILY AV <= .15 lb/d all year
101NaphthaleneDAILY MX <= .39 lb/d all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .69 lb/d all year
101Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 1.86 lb/d all year
101Di-n-butyl phthalateDAILY AV <= .18 lb/d all year
101Di-n-butyl phthalateDAILY MX <= .38 lb/d all year
101Vinyl chlorideDAILY AV <= .69 lb/d all year
101Vinyl chlorideDAILY MX <= 1.79 lb/d all year
101TrichloroethyleneDAILY AV <= .14 lb/d all year
101TrichloroethyleneDAILY MX <= .36 lb/d all year
101HexachlorobenzeneDAILY AV <= .000051 mg/L all year
101HexachlorobenzeneDAILY MX <= .00011 mg/L all year
101HexachlorobenzeneDAILY AV <= .0014 lb/d all year
101HexachlorobenzeneDAILY MX <= .00305 lb/d all year
101Flow, in conduit or thru treatment plantDAILY AV <= 4 MGD all year
101Flow, in conduit or thru treatment plantDAILY MX <= 6 MGD all year
101Chlorine, total residualMO MIN >= 1 mg/L all year
101Chlorine, total residualMO MAX <= 4 mg/L all year
1011,3-DichloropropyleneDAILY AV <= .19 lb/d all year
1011,3-DichloropropyleneDAILY MX <= .29 lb/d all year
101EnterococciDAILY AV <= 35 CFU/100mL all year
101EnterococciDAILY MX <= 89 CFU/100mL all year
1013,4-BenzofluorantheneDAILY AV <= .15 lb/d all year
1013,4-BenzofluorantheneDAILY MX <= .41 lb/d all year
101ChloroethaneDAILY AV <= .69 lb/d all year
101ChloroethaneDAILY MX <= 1.79 lb/d all year
TX1Whole effluent toxicity - retest #17 DA MIN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #27 DA MIN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TXAWhole effluent toxicity - retest #17 DA MIN report only all year
TXAWhole effluent toxicity - retest #1SINGSAMP report only all year
TXAWhole effluent toxicity - retest #1MO AV MN report only all year
TXAWhole effluent toxicity - retest #27 DA MIN report only all year
TXAWhole effluent toxicity - retest #2SINGSAMP report only all year
TXAWhole effluent toxicity - retest #2MO AV MN report only all year
TXALC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Menidia menidiaSINGSAMP report only all year
TXALow Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXALow Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXANOEC Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXANOEC Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXANOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXANOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXAPass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXAPass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXALOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXALOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXALOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXALOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidiaMO AV MN 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