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Clean Water Act discharge permit · NPDES TXG110446

ALAMO CONCRETE PRODUCTS PLANT 6, San Antonio, TX: NPDES TXG110446 discharge permit, effluent exceedances, inspections, penalties

ALAMO CONCRETE PRODUCTS PLANT 6, held by ALAMO CONCRETE PRODUCTS CO, holds NPDES permit TXG110446, which discharges to Medina River. EPA’s file records it issued March 16, 2017 and expiring November 7, 2021. 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.

Identity

Facility as filedALAMO CONCRETE PRODUCTS PLANT 6
Permittee as filedALAMO CONCRETE PRODUCTS CO
NPDES IDTXG110446
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
IssuedMarch 16, 2017
Expiration dateNovember 7, 2021
AddressSan Antonio, TX 78264
Receiving waterMEDINA RIVER
SubwatershedLive Oak Slough-Medina River (HUC 121003020505)
SIC3273 – Ready-Mixed Concrete

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

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
pH2321June 30, 2007
Solids, total suspended1161March 31, 2007469% over the limit
Flow, in conduit or thru treatment plant1160
Oil & Grease1150
Arsenic, total [as As]140
Barium, total [as Ba]140
Cadmium, total [as Cd]140
Chromium, total [as Cr]140
Copper, total [as Cu]140
Lead, total [as Pb]140
Manganese, total [as Mn]140
Nickel, total [as Ni]140
Silver, total [as Ag]140
Zinc, total [as Zn]140
Selenium, total [as Se]140
Mercury, total [as Hg]140
LC50 Pass/Fail Static 24Hr Acute D. Pulex120
LC50 Pass/Fail Static 24Hr Acute Pimephales promelas120
Whole effluent toxicity - retest #1100
Whole effluent toxicity - retest #2100

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 TXG110446.

Inspections

EPA’s inspection file holds no inspection for NPDES TXG110446.

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 TXG110446.

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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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 TXG110446 there.

Nearby on the register

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

What this page shows

This public-records page covers the Clean Water Act discharge permit NPDES TXG110446 for ALAMO CONCRETE PRODUCTS PLANT 6 in San Antonio, TX, held by ALAMO CONCRETE PRODUCTS CO, which discharges to the MEDINA RIVER within the Live Oak Slough-Medina River subwatershed (HUC 121003020505). The permit is listed as administratively continued, with a Minor discharger class of 20 and 2 pollutants under a numeric limit, 2 of which had an effluent exceedance. The permit was issued March 16, 2017 and carries an expiration date of November 7, 2021, with status as of October 14, 2026.