Clean Water Act discharge permit · NPDES TXG670077

PORT OCONNOR TERMINAL, Port O'Connor, TX: NPDES TXG670077 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
5Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

PORT OCONNOR TERMINAL, held by MARTIN OPERATING PARTNERSHIP LP, holds NPDES permit TXG670077, which discharges to Espiritu Santo Bay. EPA’s file records it issued May 17, 2010 and expiring April 4, 2015.

PORT OCONNOR TERMINAL, Port O'Connor, Texas: Coverage under a general permit TXG670077, held by MARTIN OPERATING PARTNERSHIP LP; Administratively continued (past its expiration date and still in force until reissued); issued May 17, 2010, term to April 4, 2015; discharges to ESPIRITU SANTO BAY.

pH: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Lead, total [as Pb]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Benzene, ethylbenzene, toluene, xylene combination: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Benzene: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Hydrocarbons, petroleum: 2 limits, 0 violations of any kind, 0 effluent exceedances.

Other permits held by MARTIN OPERATING PARTNERSHIP LP

BEAUMONT NECHES TERMINAL, Beaumont: TX0003662, issued April 30, 2015
MARTIN ASPHALT SOUTH HOUSTON PLANT, South Houston: TX0005479, issued September 28, 2017
GALVESTON NO 1 TERMINAL, Galveston: TX0057258, issued January 3, 2019
HARBOR ISLAND WWTP, Nueces County: TX0093157, issued August 27, 2015
MARTIN OPERATING STANOLIND CUT TERMINAL, Beaumont: TX0116921, issued November 30, 2016

PORT OCONNOR TERMINAL among its neighbors

EPA’s permit file holds 7 discharge permits in the Powderhorn Lake-Matagorda Bay subwatershed (HUC 121004020500), TXG670077 among them. Its county holds 50, 6 of them major permits; TXG670077 is a minor permit.

Other permits in the Powderhorn Lake-Matagorda Bay subwatershed (HUC 121004020500)

DOW HYDROCARBONS & RESOURCES LLC AND UNION CARBIDE, Seadrift: TXR1517UL, minor permit, discharging to LAVACA-GUADALUPE COASTAL RIVER BASIN, permit term to March 4, 2028
DVORAK ENTERPRISES DBA MID COAST AUTO PARTS, Victoria: TXR05FL76, minor permit, permit term to August 13, 2026
FREEDOM BOATS USA, Victoria: TXRNECL53, minor permit, permit term to August 13, 2026
PORT O'CONNOR IMPROVEMENT DISTRICT WWTP, Port O'Connor: TX0112151, minor permit, discharging to LIVE OAK BAYOU, BOGGY BAYOU, MATAGORDA BAY, permit term to December 1, 2021
R&G SHRIMP FARM, Port Lavaca: TXG130024, minor permit, discharging to UNNAMED DITCH - CHOCOLATE BAY, permit term to April 17, 2016
SEADRIFT INFRASTRUCTURE, Seadrift: TX0002844, major permit, discharging to VICTORIA BARAGE;LAVACA-GUADALUPE, permit term to October 1, 2019

What the register holds for PORT OCONNOR TERMINAL: its NPDES ID, its permit type and status, its dates, its address in Port O'Connor, Texas, its receiving water, and 5 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXG670077.

Identity

Facility as filed	PORT OCONNOR TERMINAL
Permittee as filed	MARTIN OPERATING PARTNERSHIP LP
NPDES ID	TXG670077
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	May 17, 2010
Expiration date	April 4, 2015
Address	Port O'Connor, TX 77982
Receiving water	ESPIRITU SANTO BAY
Subwatershed	Powderhorn Lake-Matagorda Bay (HUC 121004020500)
SIC	5171 – Petroleum Bulk Stations & Terminals
Other EPA IDs (FRS)	ICIS-AIR source TX0000004805700036

Effluent limits and exceedances

5Pollutants on file
5Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

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.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
pH	2	0	0
Lead, total [as Pb]	2	0	0
Benzene, ethylbenzene, toluene, xylene combination	2	0	0
Benzene	2	0	0
Hydrocarbons, petroleum	2	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES TXG670077.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXG670077.

Inspections

EPA’s inspection file holds no inspection for NPDES TXG670077.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES TXG670077.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES permit TXG670077, held by MARTIN OPERATING PARTNERSHIP LP for PORT OCONNOR TERMINAL in Port O'Connor, TX, which discharges to Espiritu Santo Bay. The permit is listed as administratively continued, a Minor discharger class 5 with 0 pollutants with an effluent exceedance and 5 pollutants under a numeric limit. The permit's dates in the facts are an issuance on May 17, 2010 and an expiration on April 4, 2015.