Clean Water Act discharge permit · NPDES TXR1580NN

IAH TAXIWAY WA REHABILIATION, Houston, TX: NPDES TXR1580NN discharge permit, effluent exceedances, inspections, penalties

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

IAH TAXIWAY WA REHABILIATION, held by Flatiron Constructors, Inc., holds NPDES permit TXR1580NN, which discharges to Greens Bayou Above Tidal. EPA’s file records it issued July 12, 2023 and expiring March 4, 2028.

IAH TAXIWAY WA REHABILIATION, Houston, Texas: Coverage under a general permit TXR1580NN, held by Flatiron Constructors, Inc.; Construction stormwater; Effective; issued July 12, 2023, term to March 4, 2028; discharges to GREENS BAYOU ABOVE TIDAL.

Texas holds 23,986 Construction stormwater coverages of this permit type in EPA’s file; 2,845 were issued before TXR1580NN. Flatiron Constructors, Inc. holds 6 permits in Texas.

Other permits held by Flatiron Constructors, Inc.

BROWN-US 84 CSJ0054-07-069, Early: TXR15299O, issued June 1, 2018
HOUSTON HOBBY - NON-STANDARD TAXIWAY PN 770 - HOU, Houston: TXR1563PE, issued December 4, 2023
TXDOT FTW TARRANT CSJ 000813248, Fort Worth: TXR1583OS, issued October 19, 2023
TXDOT FTW CSJ 0008-13-221, Fort Worth: TXR1590NZ, issued August 15, 2023
TXDOT DAL 0442-03-042 IH 35E, Red Oak: TXR1593QW, issued May 17, 2024

Coverages issued nearest TXR1580NN

July 12, 2023: THE RIDGE AT HIGH RANCH UNIT 1A, New Braunfels, TXR1517NO, held by 7 Site & Utility, LLC
July 12, 2023: WEST EASTLAKE ESTATES UNIT II, Horizon City, TXR1523NO, held by ITHACA DEVELOPMENT, LLC
July 12, 2023: PASEO DEL ESTE UNIT 8 PH 1 & PH 2, El Paso, TXR1528NO, held by Casas de Leon, LLC
July 12, 2023: COUNTRY CLUB ESTATES, Denton, TXR1531NO, held by Patrick Custom Homes, Inc.
July 12, 2023: WILDRIDGE PH7 & PH8, Oak Point, TXR1532NO, held by Cf Cslk Rdmn LLC
July 12, 2023: AMIRA DEVELOPMENT - LAND, Tomball, TXR1588NN, held by Harris Construction Company, LLC
July 12, 2023: VILLAGES ON CLOSNER SUBDIVISION, Edinburg, TXR1589NN, held by All Valley Innovations Group
July 12, 2023: ESCONDIDO CROSSING, Lubbock, TXR1591NN, held by Kjv Properties, LLC
July 12, 2023: HIGH POINTE RANCH -PH 1A 1B - GRADING, Aubrey, TXR1594NN, held by Hammett Excavation, Inc.
July 12, 2023: PLEASANTON FARMS AKA PLEASANTON MEADOWS, Pleasanton, TXR1595NN, held by BRM Trucking & Construction, LLC

IAH TAXIWAY WA REHABILIATION among its neighbors

EPA’s permit file holds 181 discharge permits in the Upper Greens Bayou subwatershed (HUC 120401040603), TXR1580NN among them.

Other permits in the Upper Greens Bayou subwatershed (HUC 120401040603)

3S-SUPERIOR SEALING SERVICES, Houston: TXRNECF70, minor permit, permit term to August 13, 2026
6410 WINFIELD RD, Houston: TXR1550VH, minor permit, discharging to GREENS BAYOU, permit term to March 4, 2028
7515 RANKIN RD, Humble: TXR1506YI, minor permit, discharging to HALLS BAYOU, permit term to March 4, 2028
ACC HOU - PINAFORE, Houston: TXR05GR38, minor permit, permit term to August 13, 2026
ACCUWELD, Houston: TXRNEBO60, minor permit, permit term to August 13, 2026
AIRTEX CBP, Houston: TXG111552, minor permit, discharging to GREENS BAYOU, permit term to November 7, 2021
ALD WEST II, Houston: TXR1559YE, minor permit, discharging to HOODS BAYOU, permit term to March 4, 2028
ALDINE FOREST WWTP, Houston: TX0069582, minor permit, discharging to HCFCD P138-00-00;GREENS BAYOU ABOVE TIDAL, permit term to December 1, 2022
ALDINE ISD CHRISMAN RD WTP, Houston: TX0094188, minor permit, discharging to HARRIS COUNTY CDC P138-00-00;GREENS BAYOU, permit term to December 1, 2022
ALDINE JUNIOR HIGH SCHOOL WWTP, Houston: TX0078808, minor permit, discharging to SAN JACINTO RIVER BASIN, permit term to December 1, 2014

What the register holds for IAH TAXIWAY WA REHABILIATION: its NPDES ID, its permit type and status, its dates, its address in Houston, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1580NN.

Identity

Facility as filed	IAH TAXIWAY WA REHABILIATION
Permittee as filed	Flatiron Constructors, Inc.
NPDES ID	TXR1580NN
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	July 12, 2023
Expiration date	March 4, 2028
Address	Houston, TX 77032
Receiving water	GREENS BAYOU ABOVE TIDAL
Receiving water impaired	303(D) Listed
Subwatershed	Upper Greens Bayou (HUC 120401040603)
SIC	1611 – Highway And Street Construction

Effluent limits and exceedances

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

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR1580NN.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR1580NN.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR1580NN.

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 TXR1580NN.

Watch this permit

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Nearby on the register

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

The IAH TAXIWAY WA REHABILIATION storm water construction permit, held by Flatiron Constructors, Inc., is one of 154 such permits in Houston on EPA's NPDES register, and 74.7% of those permits carry an earlier issue date than this one. The permit also sits within the Upper Greens Bayou subwatershed, which holds 181 NPDES permits including this one, and 0.0% of the Houston storm water construction permits have a violation on file.