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Clean Water Act discharge permit · NPDES ALR10C68B

LAKE PURDY DAM - STABILIZATION IMPROVEMENTS PROJECT, Birmingham, AL: NPDES ALR10C68B discharge permit, effluent exceedances, inspections, penalties

LAKE PURDY DAM - STABILIZATION IMPROVEMENTS PROJECT, held by Thalle Construction Co., Inc., holds NPDES permit ALR10C68B. EPA’s file records it issued January 17, 2025 and expiring March 31, 2026. 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 LAKE PURDY DAM - STABILIZATION IMPROVEMENTS PROJECT: its NPDES ID, its permit type and status, its dates, its address in Birmingham, Alabama. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ALR10C68B.

Identity

Facility as filedLAKE PURDY DAM - STABILIZATION IMPROVEMENTS PROJECT
Permittee as filedThalle Construction Co., Inc.
NPDES IDALR10C68B
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJanuary 17, 2025
Expiration dateMarch 31, 2026
Issuing agencyState
AddressBirmingham, AL 35242
SubwatershedLittle Cahaba River (HUC 031502020103)

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 ALR10C68B.

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 ALR10C68B.

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, ALR10C68B.

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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 ALR10C68B there.

Nearby on the register

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

What this page shows

The LAKE PURDY DAM - STABILIZATION IMPROVEMENTS PROJECT, a Storm Water Construction permit held by Thalle Construction Co., Inc., is one of 367 such permits on EPA's NPDES register in Shelby County, Alabama, including this one. Among the 81 NPDES permits in the Little Cahaba River subwatershed, this one included, it shares that watershed with many peers, and 74.1% of the 367 Shelby County storm water construction permits carry an earlier issue date than this one's January 17, 2025 issuance. Of those 367 peers, 0.0% have a violation on file, and this permit records 0 pollutants under a numeric limit and 0 pollutants with an