Clean Water Act discharge permit · NPDES ALG110468

MMC MATERIALS INC., Hartford, AL: NPDES ALG110468 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
5Pollutants under a numeric limit
0Pollutants with an effluent exceedance
1Inspections on file
0Formal enforcement actions

MMC MATERIALS INC., held by Stephens Construction & Concrete Inc., holds NPDES permit ALG110468. EPA’s file records it issued March 24, 2023 and expiring August 31, 2027.

MMC MATERIALS INC., Hartford, Alabama: Coverage under a general permit ALG110468, held by Stephens Construction & Concrete Inc.; Industrial stormwater; Effective; issued March 24, 2023, term to August 31, 2027, by State; Ready-Mix Concrete Manufacturing.

pH: 4 limits, 66 violations of any kind, 0 effluent exceedances.
Solids, total suspended: 2 limits, 33 violations of any kind, 0 effluent exceedances.
Oil & Grease: 2 limits, 32 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 2 limits, 32 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 2 limits, 32 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 0 limits, 18 violations of any kind, 0 effluent exceedances.
Rainfall: 0 limits, 1 violation of any kind, 0 effluent exceedances.
Annual Certification Statement: 0 limits, 1 violation of any kind, 0 effluent exceedances.

September 29, 2026: Letter of Violation/ Warning Letter (State).
August 27, 2026: Evaluation (S).

Alabama holds 2,504 Industrial stormwater coverages of this permit type in EPA’s file; 2,263 were issued before ALG110468.

Coverages issued nearest ALG110468

March 10, 2023: RADIUS RECYCLING, INC., Attalla, ALG180342, held by Schnitzer Southeast, LLC
March 15, 2023: SIZEMORE GRAVEL PIT, Beaverton, ALG890441, held by Lamar County Commission
March 15, 2023: BERG PIPE MOBILE CORPORATION, Mobile, ALNE00339, held by Berg Pipe Mobile Corp.
March 17, 2023: PHENIX CITY - 15023, Phenix City, ALG110419, held by HM Southeast Concrete LLC
March 21, 2023: PACKAGING CORPORATION OF AMERICA, Opelika, ALNE00204, held by Packaging Corporation of America
March 27, 2023: KERSHAW EQUIPMENT, L.L.C., Montgomery, ALG120026, held by Progress Rail Services Corporation
March 27, 2023: ITAC ALABAMA, LLC, Luverne, ALG120732, held by SMART Alabama, LLC
March 27, 2023: HIGHWAY 158 PIT, Eight Mile, ALG890073, held by Wiregrass Construction Company, Inc.
March 27, 2023: AMERICAN TRIM -CULLMAN OPERATIONS, Cullman, ALNE00410, held by American Trim, L.L.C.
March 29, 2023: BUSH HOG LLC - GRIFFIN AVENUE FACILITY, Selma, ALG120100, held by Bush Hog, LLC

MMC MATERIALS INC. among its neighbors

EPA’s permit file holds 4 discharge permits in the Justice Mill Creek subwatershed (HUC 031402030101), ALG110468 among them. Its county holds 44, 1 of them major permits; ALG110468 is a minor permit.

Other permits in the Justice Mill Creek subwatershed (HUC 031402030101)

GENEVA COUNTY INDUSTRIAL PARK IMPROVEMENTS, Hartford: ALR10BHNN, minor permit, permit term to March 31, 2021
HARRELL MILLING CO. INC., Hartford: ALG150058, minor permit, permit term to May 31, 2022
HARTFORD - GENEVA 46KV TL, Abbeville: ALR10C22R, minor permit, permit term to March 31, 2026

Identity

Facility as filed	MMC MATERIALS INC.
Permittee as filed	Stephens Construction & Concrete Inc.
NPDES ID	ALG110468
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	March 24, 2023
Expiration date	August 31, 2027
Issuing agency	State
Address	Hartford, AL 36344
Subwatershed	Justice Mill Creek (HUC 031402030101)
NAICS	327320 – Ready-Mix Concrete Manufacturing
SIC	3273 – Ready-Mixed Concrete

Effluent limits and exceedances

8Pollutants on file
5Under a numeric limit
8With a violation of any kind
0With 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
pH	4	66
Solids, total suspended	2	33
Oil & Grease	2	32
Phosphorus, total [as P]	2	32
Flow, in conduit or thru treatment plant	2	32
Chlorine, total residual	0	18
Rainfall	0	1
Annual Certification Statement	0	1

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES ALG110468.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES ALG110468.

Inspections

Date	What EPA recorded	Agency
August 27, 2026	Evaluation	S

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

Date	What EPA recorded	Agency
September 29, 2026	Letter of Violation/ Warning Letter	State

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

This public-records page covers NPDES permit ALG110468 for MMC MATERIALS INC. in Hartford, AL, held by Stephens Construction & Concrete Inc., which EPA's file shows as issued March 24, 2023 and expiring August 31, 2027. The page lists 8 pollutants on file, 5 of them under a numeric limit, and 8 with a violation of a limit.