Clean Water Act discharge permit · NPDES ILR10ZGWT

69F91, Avon, IL: NPDES ILR10ZGWT 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

69F91, held by Gunther Construction, a div of UCM, Inc, holds NPDES permit ILR10ZGWT. EPA’s file records it issued May 2, 2026 and expiring August 31, 2028.

69F91, Avon, Illinois: Coverage under a general permit ILR10ZGWT, held by Gunther Construction, a div of UCM, Inc; Construction stormwater; Effective; issued May 2, 2026, term to August 31, 2028, by IEPA.

Illinois holds 5,215 Construction stormwater coverages of this permit type in EPA’s file; 4,585 were issued before ILR10ZGWT. Gunther Construction, a div of UCM, Inc holds 2 permits in Illinois.

Other permits held by Gunther Construction, a div of UCM, Inc

68E50, Williamsfield: ILR10ZFEV, issued April 30, 2025

Coverages issued nearest ILR10ZGWT

May 1, 2026: KIMBERLIN STREET RETENTION POND, Troy, ILR10ZGWN, held by JH Contractors, Inc.
May 2, 2026: COSTCO ORLAND PARK, Orland Park, ILR10ZGWO, held by Novak Construction
May 2, 2026: NORTHBROOK SCHOOL DISTRICT 28 WESTMOOR ELEMENTARY SCHOOL, Northbrook, ILR10ZGWP, held by To be Determined
May 2, 2026: ASD MCLEAN IL SOLAR V LLC, Gridley Township, ILR10ZGWQ, held by Blue Cat Energy
May 2, 2026: PSE MCLEAN IL SOLAR VII LLC, Old Town, ILR10ZGWS, held by Blue Cat Energy
May 2, 2026: 4766: I-490 ROADWAY CONSTRUCTION IRVING PARK TO DEVON, Chicago, ILR10ZGWU, held by OHLA Central, Inc.
May 2, 2026: DIETRICH ROAD SOLAR 1, LLC, Hampshire, ILR10ZGWV, held by Knobelsdorff Energy, LLC
May 2, 2026: CRASH CHAMPIONS WOODSTOCK, Woodstock, ILR10ZGWW, held by Crash Champions, LLC
May 2, 2026: WATERLINK EXTENSION CONTRACT FW-1/25 SECTION 1, Oswego, ILR10ZGWY, held by Bolder Contractors
May 2, 2026: N PECATONICA ROAD COMMUNITY ENERGY INITIATIVE, LLC, Leaf River, ILR10ZGWZ, held by Knobelsdorff Energy, LLC

69F91 among its neighbors

EPA’s permit file holds 5 discharge permits in the Cedar Creek subwatershed (HUC 071300050910), ILR10ZGWT among them.

Other permits in the Cedar Creek subwatershed (HUC 071300050910)

AVON STP, VILLAGE OF, Avon: IL0021334, minor permit, discharging to GALLETT CREEK, permit term to August 31, 2022
AVON WATER TREATMENT PLANT, Avon: ILG640145, minor permit, discharging to CEDAR CREEK, permit term to April 30, 2017
HIEL TRUCING, INC., Prairie City: ILR002095, minor permit, permit term to June 1, 2008
PRAIRIE CITY STP, VILLAGE OF, Prairie City: ILG580256, minor permit, discharging to GALLETT CREEK, permit term to June 30, 2018

What the register holds for 69F91: its NPDES ID, its permit type and status, its dates, its address in Avon, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILR10ZGWT.

Identity

Facility as filed	69F91
Permittee as filed	Gunther Construction, a div of UCM, Inc
NPDES ID	ILR10ZGWT
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	May 2, 2026
Expiration date	August 31, 2028
Issuing agency	IEPA
Address	Avon, IL 61415
Subwatershed	Cedar Creek (HUC 071300050910)

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 ILR10ZGWT.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILR10ZGWT.

Inspections

EPA’s inspection file holds no inspection for NPDES ILR10ZGWT.

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 ILR10ZGWT.

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, ILR10ZGWT.

Start the watch

How we handle your data → Privacy

Nearby on the register

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

69F91 appears as 1 storm water construction permit in Avon on EPA's NPDES register. The Cedar Creek subwatershed (HUC 071300050910) holds 5 NPDES permits, counting this permit.