Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
One more press on the next page sends it; there is no link to click in an email. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES TXR1546NB

MERCEDES BENZ OF SOUTH AUSTIN, Austin, TX: NPDES TXR1546NB discharge permit, effluent exceedances, inspections, penalties

MERCEDES BENZ OF SOUTH AUSTIN, held by NAVCON GROUP LLC, holds NPDES permit TXR1546NB, which discharges to Onion Creek. EPA’s file records it issued June 6, 2023 and expiring March 4, 2028. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for MERCEDES BENZ OF SOUTH AUSTIN: its NPDES ID, its permit type and status, its dates, its address in Austin, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1546NB.

Identity

Facility as filedMERCEDES BENZ OF SOUTH AUSTIN
Permittee as filedNAVCON GROUP LLC
NPDES IDTXR1546NB
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJune 6, 2023
Expiration dateMarch 4, 2028
AddressAustin, TX 78748
Receiving waterONION CREEK
SubwatershedSlaughter Creek-Onion Creek (HUC 120902050407)
SIC1522 – Residential Construction

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR1546NB.

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 TXR1546NB.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR1546NB.

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 TXR1546NB.

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, TXR1546NB.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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 TXR1546NB there.

MERCEDES BENZ OF SOUTH AUSTIN, Austin, Texas: Coverage under a general permit TXR1546NB, held by NAVCON GROUP LLC; Construction stormwater; Effective; issued June 6, 2023, term to March 4, 2028; discharges to ONION CREEK.

Texas holds 23,986 Construction stormwater coverages of this permit type in EPA’s file; 2,245 were issued before TXR1546NB. NAVCON GROUP LLC holds 10 permits in Texas.

Other permits held by NAVCON GROUP LLC

Coverages issued nearest TXR1546NB

MERCEDES BENZ OF SOUTH AUSTIN among its neighbors

EPA’s permit file holds 40 discharge permits in the Slaughter Creek-Onion Creek subwatershed (HUC 120902050407), TXR1546NB among them.

Other permits in the Slaughter Creek-Onion Creek subwatershed (HUC 120902050407)

  • AUSTIN WALDORF SCHOOL, Austin: TXR1538YP, minor permit, discharging to SLAUGHTER CREEK, permit term to March 4, 2028
  • BOWIE HIGH SCHOOL, Austin: TXR1587UZ, minor permit, discharging to COLORADO RIVER, permit term to March 4, 2028
  • CALMONT AT ESTANCIA, Manchaca: TXR1549XX, minor permit, discharging to ONION CREEK, permit term to March 4, 2028
  • CASCADES AT ONION CREEK, Austin: TXR1558CH, minor permit, discharging to ONION CREEK, permit term to March 4, 2023
  • CASCADES AT ONION CREEK PH 4, Austin: TXR1508WP, minor permit, discharging to ONION CREEK, permit term to March 4, 2028
  • CLOVERLEAF PHASE 1 ENTRY GATE AND WALL, Austin: TXR1554LG, minor permit, discharging to ONION CREEK, permit term to March 5, 2023
  • DOUBLE CREEK MULTIFAMILY PHASE II, Austin: TXR1538NB, minor permit, discharging to ONION CREEK, permit term to March 4, 2028
  • EDDINGS RANCH, Austin: TXR1558YC, minor permit, discharging to SLAUGHTER CREEK 1427A, permit term to March 4, 2028
  • ENDEAVOR 290 WEST, Austin: TXR1509ST, minor permit, discharging to SLAUGHTER CREEK, permit term to March 4, 2028
  • ESTANCIA PHASE 11 CONDOS, Austin: TXR1562PR, minor permit, discharging to ONION CREEK, permit term to March 4, 2028

Nearby on the register

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

What this page shows

MERCEDES BENZ OF SOUTH AUSTIN is one of 97 storm water construction permits on EPA's NPDES register in Austin. Of those 97 permits, 64.9% have an earlier issue date than this permit. The permit is one of 40 NPDES permits in the Slaughter Creek-Onion Creek subwatershed.