Clean Water Act discharge permit · NPDES AL0064777

PIT NO. 3, Mobile, AL: NPDES AL0064777 discharge permit, effluent exceedances, inspections, penalties

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

PIT NO. 3, held by Walco, Inc., holds NPDES permit AL0064777. EPA’s file records it issued September 21, 2023 and expiring September 30, 2028.

PIT NO. 3, Mobile, Alabama: Individual permit AL0064777, held by Walco, Inc.; Effective; issued September 21, 2023, term to September 30, 2028, by State; Construction Sand and Gravel Mining.

pH: 0 limits, 132 violations of any kind, 0 effluent exceedances.
Solids, total suspended: 0 limits, 132 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 0 limits, 132 violations of any kind, 0 effluent exceedances.

PIT NO. 3 among its neighbors

EPA’s permit file holds 46 discharge permits in the Pierce Creek-Big Creek subwatershed (HUC 031700080601), AL0064777 among them. Its county holds 1,120, 18 of them major permits; AL0064777 is a minor permit.

Other permits in the Pierce Creek-Big Creek subwatershed (HUC 031700080601)

24 HOUR STORAGE MOBILE, Mobile: ALR10C5PZ, minor permit, permit term to March 31, 2026
AASF #3, Mobile: ALNE00461, minor permit, permit term to February 28, 2029
ACADIAN FARMS, Mobile: ALR10C410, minor permit, permit term to March 31, 2026
ARBOURS AT PIERCE CREEK, Mobile: ALR10AW68, minor permit, permit term to March 31, 2016
AUTO WORLD SALVAGE AND SALES, INC., Mobile: ALG180316, minor permit, permit term to September 30, 2022
BAYOU CONCRETE LLC - AIRPORT PLANT, Mobile: ALG110146, minor permit, permit term to August 31, 2017
BENCHMARK AT NEWMAN CROSSING, Mobile: ALR108525, minor permit, permit term to March 31, 2026
BIG CREEK LAKE DAM TOE BERM AND DRAINAGE IMPROVEMENTS, Wilmer: ALR10C6BZ, minor permit, permit term to March 31, 2026
CAMELLIA SQUARE APARTMENTS, Mobile: ALR10C6JC, minor permit, permit term to March 31, 2026
D R HORTON AT LEGACY, Mobile: ALR16EFA8, minor permit, permit term to April 12, 2011

Identity

Facility as filed	PIT NO. 3
Permittee as filed	Walco, Inc.
NPDES ID	AL0064777
Permit status	Effective
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	September 21, 2023
Expiration date	September 30, 2028
Issuing agency	State
Address	Mobile, AL 36608
Subwatershed	Pierce Creek-Big Creek (HUC 031700080601)
NAICS	212321 – Construction Sand and Gravel Mining
SIC	1442 – Construction Sand And Gravel

Effluent limits and exceedances

3Pollutants on file
0Under a numeric limit
3With 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	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
pH	0	132	0
Solids, total suspended	0	132	0
Flow, in conduit or thru treatment plant	0	132	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES AL0064777.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES AL0064777.

Inspections

EPA’s inspection file holds no inspection for NPDES AL0064777.

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 AL0064777.

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Nearby on the register

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

PIT NO. 3, an individual Clean Water Act discharge permit held by Walco, Inc. in Mobile, Alabama, was issued before 96.5% of the 86 individual permits in Mobile County, while 90.7% of those same 86 permits have a violation on file. The permit lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and it sits among 46 NPDES permits in the Pierce Creek-Big Creek subwatershed, this one included.