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Clean Water Act discharge permit · NPDES TXR1571VF

ALSATIAN OAKS UNITS 4 & 5, Castroville, TX: NPDES TXR1571VF discharge permit, effluent exceedances, inspections, penalties

ALSATIAN OAKS UNITS 4 & 5, held by Yc Partners, LLC, holds NPDES permit TXR1571VF, which discharges to Flat Creek Which Runs Into Medina River. EPA’s file records it issued July 16, 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 ALSATIAN OAKS UNITS 4 & 5: its NPDES ID, its permit type and status, its dates, its address in Castroville, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1571VF.

Identity

Facility as filedALSATIAN OAKS UNITS 4 & 5
Permittee as filedYc Partners, LLC
NPDES IDTXR1571VF
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJuly 16, 2025
Expiration dateMarch 4, 2028
AddressCastroville, TX 78009
Receiving waterFLAT CREEK WHICH RUNS INTO MEDINA RIVER
SubwatershedFlat Creek-Medina River (HUC 121003020501)

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR1571VF.

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 TXR1571VF.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR1571VF.

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 TXR1571VF.

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, TXR1571VF.

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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 TXR1571VF there.

Nearby on the register

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

What this page shows

The ALSATIAN OAKS UNITS 4 & 5 permit, held by Yc Partners, LLC in Castroville, Medina County, Texas, is one of 108 storm water construction permits on EPA's NPDES register in Medina County, this one included. Among those 108 permits, 3.7% have a violation on file, and 57.4% were issued earlier than this one. The permit is also one of 36 NPDES permits in the Flat Creek-Medina River subwatershed, this one included, and it has no pollutants under a numeric limit or with an effluent exceedance on record.