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Clean Water Act discharge permit · NPDES TXR1504XM

HIGHLINE SUBSTATION, Cedar Creek, TX: NPDES TXR1504XM discharge permit, effluent exceedances, inspections, penalties

HIGHLINE SUBSTATION, held by TLC CONSTRUCTION, holds NPDES permit TXR1504XM, which discharges to Cedar Creek. EPA’s file records it issued February 27, 2026 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 HIGHLINE SUBSTATION: its NPDES ID, its permit type and status, its dates, its address in Cedar Creek, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1504XM.

Identity

Facility as filedHIGHLINE SUBSTATION
Permittee as filedTLC CONSTRUCTION
NPDES IDTXR1504XM
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedFebruary 27, 2026
Expiration dateMarch 4, 2028
AddressCedar Creek, TX 78612
Receiving waterCEDAR CREEK
SubwatershedRed Gully Creek-Dry Creek (HUC 120903010109)

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 TXR1504XM.

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 TXR1504XM.

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.

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, TXR1504XM.

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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 TXR1504XM there.

Nearby on the register

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

What this page shows

The HIGHLINE SUBSTATION permit, held by TLC CONSTRUCTION in Cedar Creek, Bastrop County, Texas, is one of 152 storm water construction permits in that county, with 2.6% of those permits carrying a violation on file. The permit sits within the Red Gully Creek-Dry Creek subwatershed, which contains 76 NPDES permits including this one. Among all 152 Bastrop County storm water construction permits, 71.7% were issued earlier than this one, which was issued February 27, 2026.