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Clean Water Act discharge permit · NPDES TXG670536

HOUSTON ASPHALT TERMINAL, Houston, TX: NPDES TXG670536 discharge permit, effluent exceedances, inspections, penalties

HOUSTON ASPHALT TERMINAL, held by Valero Marketing And Supply Company, holds NPDES permit TXG670536. EPA’s file records it issued June 26, 2025 and expiring April 4, 2030. 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 HOUSTON ASPHALT TERMINAL: its NPDES ID, its permit type and status, its dates, its address in Houston, Texas. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXG670536.

Identity

Facility as filedHOUSTON ASPHALT TERMINAL
Permittee as filedValero Marketing And Supply Company
NPDES IDTXG670536
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJune 26, 2025
Expiration dateApril 4, 2030
AddressHouston, TX 77029
SubwatershedVince Bayou-Buffalo Bayou (HUC 120401040703)
Other EPA IDs (FRS)RCRA handler TXR000062810

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXG670536.

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 TXG670536.

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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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 TXG670536 there.

Nearby on the register

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

What this page shows

The HOUSTON ASPHALT TERMINAL permit, held by Valero Marketing And Supply Company in Houston, Harris County, Texas, is one of 299 general permit coverages on EPA's NPDES register in Harris County, and it was issued earlier than 86.3% of the 292 general permit coverages in that county. Among the 288 NPDES permits in the Vince Bayou-Buffalo Bayou subwatershed, this permit shares its watershed with the other entries, and none of its pollutants is recorded under a numeric limit or with an effluent exceedance (both counted as 0). Compared with the 52.2% of the 299 Harris County general permit coverages that carry a violation on file, this permit has no such violation rec