Clean Water Act discharge permit · NPDES INRM00746

GRISSOM AIR RESERVE BASE, Grissom Air Reserve Base, IN: NPDES INRM00746 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
3Inspections on file
0Formal enforcement actions

GRISSOM AIR RESERVE BASE, held by Grissom Air Reserve Base, holds NPDES permit INRM00746, which discharges to Pipe Creek. EPA’s file records it issued June 22, 2019 and expiring June 21, 2024.

GRISSOM AIR RESERVE BASE, Grissom Air Reserve Base, Indiana: Individual permit INRM00746, held by Grissom Air Reserve Base; Industrial stormwater; Administratively continued (past its expiration date and still in force until reissued); issued June 22, 2019, term to June 21, 2024, by IDEM; discharges to Pipe Creek; National Security.

May 1, 2026: Evaluation (E).
May 1, 2026: Evaluation (E).
April 28, 2026: Evaluation (S).

Indiana holds 1,027 Industrial stormwater coverages of this permit type in EPA’s file; 537 were issued before INRM00746.

Coverages issued nearest INRM00746

June 14, 2019: THE ANDERSONS INCORPORATED, Seymour, INRM02560, held by The Andersons Incorporated
June 19, 2019: AVERY DENNISON CORP FASSON ROLL DIVISION, Fort Wayne, INRM00930, held by Avery Dennison Corp Fasson Roll Division
June 21, 2019: CUMMINS ENGINE COMPANY INCORPORATED, Columbus, INRM00882, held by Cummins Engine Company Incorporated
June 21, 2019: DEPUY ORTHOPAEDICS INCORPORATED, Warsaw, INRM00908, held by DePuy Orthopaedics Incorporated
June 21, 2019: IRVING MATERIALS INCORPORATED SEYMOUR, Seymour, INRM02561, held by Irving Materials Incorporated Seymour
June 22, 2019: MERIT STEEL COMPANY INCORPORATED, Kouts, INRM00907, held by Merit Steel Company Incorporated
June 22, 2019: BOMARKO INCORPORATED, Plymouth, INRM00919, held by Bomarko Incorporated
June 22, 2019: OTTENWELLER COMPANY, Fort Wayne, INRM00936, held by Ottenweller Company
June 24, 2019: GULF STREAM COACH INCORPORATED, Nappanee, INRM00894, held by Gulf Stream Coach Incorporated
June 24, 2019: SEAHAWK RECREATIONAL VEHICLES, Nappanee, INRM01559, held by Seahawk Recreational Vehicles

GRISSOM AIR RESERVE BASE among its neighbors

EPA’s permit file holds 17 discharge permits in the Bear Creek-Pipe Creek subwatershed (HUC 051201011507), INRM00746 among them. Its county holds 38, 3 of them major permits; INRM00746 is a minor permit.

Other permits in the Bear Creek-Pipe Creek subwatershed (HUC 051201011507)

BUNKER HILL WWTP, TOWN OF, Bunker Hill: IN0020206, minor permit, discharging to PIPE CREEK TO WABASH RIVER, permit term to May 31, 2023
E & B PAVING LLC PORTABLE PLANT 42, Peru: INRM02804, minor permit, permit term to October 19, 2026
GRISSOM AEROPLEX, Bunker Hill: INRA16233, minor permit, permit term to June 11, 2030
GRISSOM ARB, Grissom Air Reserve Base: INRA14785, minor permit, permit term to October 7, 2029
GRISSOM ARB SMALL ARMS RANGE, Grissom Air Reserve Base: INRA11210, minor permit, permit term to February 6, 2028
HANSON AGGREGATES MIDWEST INC MILNER QUARRY, Peru: ING490087, minor permit, discharging to Pipe Creek, permit term to September 30, 2025
HERSHEY SALTY SNACKS BLUFFTON PLANT, Bluffton: INRM03119, minor permit, discharging to Delong Ditch, permit term to October 3, 2029
HOOSIER VETERANS ADMINISTRATION MEDICAL CLINIC, Peru: INRA06589, minor permit, permit term to October 15, 2025
IMI LOGANSPORT SAND & GRAVEL, Walton: ING490144, minor permit, discharging to Bear Creek, permit term to September 30, 2025
IPL HARDING ST GENERATING STATION, Indianapolis: IN0004685, major permit, discharging to W FK WHITE R & WHITE LICK CREEK, permit term to September 30, 2022

Identity

Facility as filed	GRISSOM AIR RESERVE BASE
Permittee as filed	Grissom Air Reserve Base
NPDES ID	INRM00746
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Federal facility
Program	Industrial stormwater
Issued	June 22, 2019
Expiration date	June 21, 2024
Issuing agency	IDEM
Address	Grissom Air Reserve Base, IN 46971
Receiving water	Pipe Creek
Subwatershed	Bear Creek-Pipe Creek (HUC 051201011507)
NAICS	928110 – National Security
SIC	9711 – National Security

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES INRM00746.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES INRM00746.

Inspections

Date	What EPA recorded	Agency
May 1, 2026	Evaluation	E
May 1, 2026	Evaluation	E
April 28, 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

EPA’s informal enforcement file holds no action for NPDES INRM00746.

Watch this permit

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Nearby on the register

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

The Grissom Air Reserve Base permit, NPDES ID INRM00746, is one of 8 storm water industrial permits in Miami County, Indiana, and 0.0% of those 8 permits carry a violation on file. Of all 8 storm water industrial permits in Miami County, including this one, 50.0% were issued earlier than this permit's June 22, 2019 issue date. The permit is also one of 17 NPDES permits in the Bear Creek-Pipe Creek subwatershed, and it has no pollutants under a numeric limit and no effluent exceedances on record.