HOUSTON REFINING LP

NPDES permit TX0003247 · Major NON-POTW · effective, expires 2029-01-11 · 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)
0of 26 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (56)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CDAILY MX <= 46 mg/L all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 342 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY MX <= 213 mg/L all year
001Oil & GreaseDAILY MX <= 16 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 55 mg/L all year
001Cadmium, total [as Cd]DAILY MX <= .13 mg/L all year
001Chromium, hexavalent [as Cr]DAILY MX <= .059 mg/L all year
001Chromium, total [as Cr]DAILY MX <= .57 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .49 mg/L all year
001Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only all year
001TolueneDAILY MX report only all year
001BenzeneDAILY MX <= .45 mg/L all year
001EthylbenzeneDAILY MX <= 1.4 mg/L all year
001Indeno[1,2,3-cd]pyreneDAILY MX <= 1 mg/L all year
001Benzo[a]anthraceneDAILY MX <= .0018 mg/L all year
001Dibenz[a,h]anthraceneDAILY MX <= 1 mg/L all year
001NaphthaleneDAILY MX <= 1 mg/L all year
001PhenolsDAILY MX <= .33 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001CresolDAILY MX report only all year
001Xylene [mix of m+o+p]DAILY MX report only all year
003BOD, 5-day, 20 deg. CDAILY MX <= 46 mg/L all year
003Oxygen demand, chem. [high level] [COD]DAILY MX <= 352 mg/L all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedDAILY MX <= 227 mg/L all year
003Oil & GreaseDAILY MX <= 16 mg/L all year
003Carbon, tot organic [TOC]DAILY MX <= 55 mg/L all year
003Cadmium, total [as Cd]DAILY MX <= .13 mg/L all year
003Chromium, hexavalent [as Cr]DAILY MX <= .061 mg/L all year
003Chromium, total [as Cr]DAILY MX <= .59 mg/L all year
003Zinc, total [as Zn]DAILY MX <= .49 mg/L all year
003Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only all year
003TolueneDAILY MX report only all year
003BenzeneDAILY MX <= .45 mg/L all year
003EthylbenzeneDAILY MX <= 1.4 mg/L all year
003Indeno[1,2,3-cd]pyreneDAILY MX <= 1 mg/L all year
003Benzo[a]anthraceneDAILY MX <= .0018 mg/L all year
003Dibenz[a,h]anthraceneDAILY MX <= 1 mg/L all year
003NaphthaleneDAILY MX <= 1 mg/L all year
003PhenolsDAILY MX <= .34 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
003CresolDAILY MX report only all year
003Xylene [mix of m+o+p]DAILY MX report only all year
TXAWhole effluent toxicity - retest #1SINGSAMP report only all year
TXAWhole effluent toxicity - retest #2SINGSAMP 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 beryllinaSINGSAMP report only all year
TXCWhole effluent toxicity - retest #1SINGSAMP report only all year
TXCWhole effluent toxicity - retest #2SINGSAMP report only all year
TXCLC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP report only all year
TXCLC50 Pass/Fail Static 24Hr Acute Menidia beryllinaSINGSAMP 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