Clean Water Act discharge permit · NPDES TXR1599VB

SIENNA SECTION 51B, Missouri City, TX: NPDES TXR1599VB discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

SIENNA SECTION 51B, held by Toll-GTIS Property Owner LLC, holds NPDES permit TXR1599VB, which discharges to Sienna Oaks Lake. EPA’s file records it issued July 1, 2025 and expiring March 4, 2028. 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.

What the register holds for SIENNA SECTION 51B: its NPDES ID, its permit type and status, its dates, its address in Missouri City, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1599VB.

Identity

Facility as filed	SIENNA SECTION 51B
Permittee as filed	Toll-GTIS Property Owner LLC
NPDES ID	TXR1599VB
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 1, 2025
Expiration date	March 4, 2028
Address	Missouri City, TX 77459
Receiving water	SIENNA OAKS LAKE
Subwatershed	Mustang Bayou (HUC 120402040400)

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

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 TXR1599VB.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR1599VB.

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.

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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 TXR1599VB there.

Nearby on the register

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

This public-records page covers NPDES permit TXR1599VB for SIENNA SECTION 51B in Missouri City, Texas, held by Toll-GTIS Property Owner LLC, a construction stormwater coverage discharging to Sienna Oaks Lake in the Mustang Bayou subwatershed (HUC 120402040). The page lists a permit status of Effective, a Minor discharger class, 0 pollutants under a numeric limit, and 0 pollutants with an effluent exceedance, with the permit issued July 1, 2025 and expiring March 4, 2028.