Clean Water Act discharge permit · NPDES MDG490433

WESTMINSTER CONCRETE PLANT, Westminster, MD: NPDES MDG490433 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
4Pollutants under a numeric limit
3Pollutants with an effluent exceedance

WESTMINSTER CONCRETE PLANT, held by THOMAS, BENNETT & HUNTER, INC., holds NPDES permit MDG490433, which discharges to Little Pipe Creek. EPA’s file records it issued December 1, 2011 and expiring April 30, 2015. 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 filed	WESTMINSTER CONCRETE PLANT
Permittee as filed	THOMAS, BENNETT & HUNTER, INC.
NPDES ID	MDG490433
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	December 1, 2011
Expiration date	April 30, 2015
Issuing agency	Maryland Department of The Environment
Address	Westminster, MD 21157
Receiving water	LITTLE PIPE CREEK
Subwatershed	Upper Little Pipe Creek (HUC 020700090401)
SIC	3273 – Ready-Mixed Concrete
Other EPA IDs (FRS)	ICIS-AIR source MD0000002401300202

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

4Pollutants on file
4Under a numeric limit
4With a violation of any kind
3With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
pH	4	11	3	June 30, 2003
Solids, total suspended	4	18	2	June 30, 2006	138% over the limit
pH change [range]	4	19	1	September 30, 2012
Flow, in conduit or thru treatment plant	4	24	0

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MDG490433.

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, MDG490433.

Start the watch

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 MDG490433 there.

Nearby on the register

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

This public-records page covers Clean Water Act NPDES permit MDG490433 for the Westminster Concrete Plant in Westminster, MD, held by Thomas, Bennett & Hunter, Inc., which discharges to Little Pipe Creek in the Upper Little Pipe Creek subwatershed (HUC 020700090401). The permit is listed as administratively continued, a minor discharger class, issued December 1, 2011 and expiring April 30, 2015, with 3 pollutants under a numeric limit and 3 pollutants with an effluent exceedance.