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Clean Water Act discharge permit · NPDES GAIS14457

MESENA PLANT, Thomson, GA: NPDES GAIS14457 discharge permit, effluent exceedances, inspections, penalties

MESENA PLANT, held by Thomson Concrete Materials, Inc., holds NPDES permit GAIS14457. EPA’s file records it issued June 1, 2022 and expiring May 31, 2027.

MESENA PLANT, Thomson, Georgia: Coverage under a general permit GAIS14457, held by Thomson Concrete Materials, Inc.; Industrial stormwater; Effective; issued June 1, 2022, term to May 31, 2027.

  • pH: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Oil & Grease: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Chemical Oxygen Demand [COD]: 1 limit, 0 violations of any kind, 0 effluent exceedances.

Georgia holds 1,505 Industrial stormwater coverages of this permit type in EPA’s file; 493 were issued before GAIS14457. Thomson Concrete Materials, Inc. holds 2 permits in Georgia.

Other permits held by Thomson Concrete Materials, Inc.

Coverages issued nearest GAIS14457

MESENA PLANT among its neighbors

EPA’s permit file holds 118 discharge permits in the Deepstep Creek-Buffalo Creek subwatershed (HUC 030701020305), GAIS14457 among them.

Other permits in the Deepstep Creek-Buffalo Creek subwatershed (HUC 030701020305)

What the register holds for MESENA PLANT: its NPDES ID, its permit type and status, its dates, its address in Thomson, Georgia, and 4 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES GAIS14457.

Identity

Facility as filedMESENA PLANT
Permittee as filedThomson Concrete Materials, Inc.
NPDES IDGAIS14457
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedJune 1, 2022
Expiration dateMay 31, 2027
AddressThomson, GA 30824
SubwatershedDeepstep Creek-Buffalo Creek (HUC 030701020305)

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
pH200
Solids, total suspended200
Oil & Grease100
Chemical Oxygen Demand [COD]100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES GAIS14457.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES GAIS14457.

Inspections

EPA’s inspection file holds no inspection for NPDES GAIS14457.

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 GAIS14457.

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Nearby on the register

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

What this page shows

This public-records page covers the Clean Water Act NPDES discharge permit GAIS14457 held by Thomson Concrete Materials, Inc. for the MESENA PLANT in Thomson, GA, which EPA's file lists as effective with a Minor discharger class and issued June 1, 2022, expiring May 31, 2027. The register shows 4 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.