Velarion Records
The Pay Desk is the free weekly executive pay briefing — one company at a time, every number traceable to a public filing.
You’ll confirm on The Pay Desk’s sign-up page.

Clean Water Act discharge permit · NPDES TX0091855

STOLTHAVEN HOUSTON TERMINAL, Houston, TX: NPDES TX0091855 discharge permit, effluent exceedances, inspections, penalties

STOLTHAVEN HOUSTON TERMINAL, held by STOLTHAVEN HOUSTON, INC., holds NPDES permit TX0091855, which discharges to Tx. EPA’s file records it issued October 11, 2018 and expiring October 11, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedSTOLTHAVEN HOUSTON TERMINAL
Permittee as filedSTOLTHAVEN HOUSTON, INC.
NPDES IDTX0091855
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 11, 2018
Expiration dateOctober 11, 2023
AddressHouston, TX 77015
Receiving waterTX
Receiving water impaired303(D) Listed
SubwatershedVince Bayou-Buffalo Bayou (HUC 120401040703)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant; the 60 with the most exceedances of 70 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
BOD, carbonaceous [5 day, 20 C]84734May 31, 2016765% over the limit
Zinc, total [as Zn]61713February 28, 2025481% over the limit
Flow, in conduit or thru treatment plant10128September 30, 201710% over the limit
Aluminum, total [as Al]1108September 30, 2018462% over the limit
Oil & Grease12167September 30, 2025607% over the limit
Oxygen, dissolved [DO]286February 28, 201027% over the limit
Enterococci465April 30, 2019182% over the limit
Nitrogen, ammonia total [as N]884September 30, 201032% over the limit
Phenol6122October 31, 2004163% over the limit
Carbon, tot organic [TOC]11112July 31, 2022151% over the limit
Solids, total suspended10102August 31, 2019488% over the limit
Dichlorobenzene4171November 30, 201177% over the limit
Cyanide, free [amenable to chlorination]4111October 31, 202038% over the limit
pH1051September 30, 2016
BOD, 5-day, 20 deg. C231April 30, 202014% over the limit
Cyanide, free [as free]011May 31, 202513% over the limit
Carbon tetrachloride4160
Chloroform4160
Toluene4160
Benzene4160
Acrylonitrile4160
Chlorobenzene4160
Ethylbenzene4160
Methylene chloride4160
Tetrachloroethylene4160
1,1,1-Trichloroethane4160
1,1,2-Trichloroethane4160
Naphthalene4160
Trichloroethylene4160
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia690
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia690
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia690
Halogen, total organic290
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)680
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)680
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)680
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)680
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia680
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)680
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia680
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)680
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia680
LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)270
LC50 Pass/Fail Static 24Hr Acute Menidia menidia270
Tin, total [as Sn]660
Copper, total [as Cu]840
Arsenic, total [as As]640
Cadmium, total [as Cd]640
Chromium, total [as Cr]640
Cobalt, total [as Co]640
Lead, total [as Pb]640
Butyl benzyl phthalate640
Fluoranthene640
2,4,6-Trichlorophenol640
Di[2-ethylhexyl] phthalate [DEHP]640
o-Cresol640
Mercury, total [as Hg]640
Pyridine640
p-Cresol640
n-Decane640

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TX0091855.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, TX0091855.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID TX0091855 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.