Clean Water Act discharge permit · NPDES ILR10ZH5O

PROPOSED RESIDENCE - 499 SHERIDAN, Winnetka, IL: NPDES ILR10ZH5O 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

PROPOSED RESIDENCE - 499 SHERIDAN, held by LAYERCAKE, LLC, holds NPDES permit ILR10ZH5O. EPA’s file records it issued July 5, 2026 and expiring August 31, 2028.

PROPOSED RESIDENCE - 499 SHERIDAN, Winnetka, Illinois: Coverage under a general permit ILR10ZH5O, held by LAYERCAKE, LLC; Construction stormwater; Effective; issued July 5, 2026, term to August 31, 2028, by IEPA.

Illinois holds 5,215 Construction stormwater coverages of this permit type in EPA’s file; 4,893 were issued before ILR10ZH5O.

Coverages issued nearest ILR10ZH5O

July 5, 2026: US ROUTE 52 WATER MAIN & SEWER EXTENSION, Shorewood, ILR10ZH5I, held by Village of Shorewood
July 5, 2026: CONNECT TRANSIT BLOOMINGTON TRANSIT CENTER, Bloomington, ILR10ZH5J, held by Connect Transit
July 5, 2026: 2700 ELLIS ROAD TRAILER PARKING EXPANSION, 60433, ILR10ZH5K, held by Blue Water Builders
July 5, 2026: CENTER FOR DIGESTIVE HEALTH ADDITION & REMODELING - PHASE 2, Bourbonnais, ILR10ZH5M, held by PSI Construction, LLC
July 5, 2026: HIDDEN GLEN APARTMENTS SITE IMPROVEMENTS, Bourbonnais, ILR10ZH5N, held by Evergreen Real Estate Group
July 6, 2026: 2612 W CLARK ST., Peoria, ILR10ZH59, held by IBS, Inc.
July 8, 2026: ELM GROVE CSG 1 SOLAR, Pekin, ILR10ZH5Q, held by GenPro Energy Solutions
July 8, 2026: CONTRACT B- NEW FOX RIVER WASTEWATER TREATMENT PLANT, Ottawa, ILR10ZH5R, held by Vissering Construction Company
July 8, 2026: M02-290 NORTH STREET & RT. 50 LANDSCAPING GRANT, Bradley, ILR10ZH5T, held by Robert Romo
July 8, 2026: NBA 10019119 ELK GROVE VILLAGE NEW BUSINESS (WO 1615675/3615675), Elk Grove Village, ILR10ZH5U, held by NPL

PROPOSED RESIDENCE - 499 SHERIDAN among its neighbors

EPA’s permit file holds 30 discharge permits in the Diversey Harbor-Frontal Lake Michigan subwatershed (HUC 040400020502), ILR10ZH5O among them.

Other permits in the Diversey Harbor-Frontal Lake Michigan subwatershed (HUC 040400020502)

400 N. LAKESHORE DRIVE, Chicago: ILR10ZD3D, minor permit, permit term to August 31, 2028
445 SHERIDAN ROAD, Winnetka: ILR10ZF9N, minor permit, permit term to August 31, 2028
645 SHERIDAN ROAD, Winnetka: ILR10ZEKP, minor permit, permit term to August 31, 2028
CENTRAL UTILITY PLANT, Evanston: IL0066541, minor permit, discharging to LAKE MICHIGAN, permit term to April 30, 2002
CHICAGO DEPARTMENT OF WATER MGMT, Chicago: ILG103064, minor permit, permit term to May 31, 2027
DUSABLE PARK, Chicago: ILR10ZGEQ, minor permit, permit term to August 31, 2028
EVANSTON CSOS, CITY OF, Evanston: ILM580002, minor permit, discharging to NORTH SHORE CHICAGO RIVER, permit term to May 31, 2008
FOREST EDGE SUBDIVISION, Glencoe: ILR10ZA7U, minor permit, permit term to August 31, 2028
GILLSON PARK 2023 SITE IMPROVEMENT PROJECT, Wilmette: ILR10ZDCD, minor permit, permit term to August 31, 2028
GLENVIEW & GREEN BAY TOWNHOMES, Highland Park: ILR10ZFT9, minor permit, permit term to August 31, 2028

What the register holds for PROPOSED RESIDENCE - 499 SHERIDAN: its NPDES ID, its permit type and status, its dates, its address in Winnetka, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILR10ZH5O.

Identity

Facility as filed	PROPOSED RESIDENCE - 499 SHERIDAN
Permittee as filed	LAYERCAKE, LLC
NPDES ID	ILR10ZH5O
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	July 5, 2026
Expiration date	August 31, 2028
Issuing agency	IEPA
Address	Winnetka, IL 60093
Receiving water impaired	303(D) Listed
Subwatershed	Diversey Harbor-Frontal Lake Michigan (HUC 040400020502)

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 ILR10ZH5O.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILR10ZH5O.

Inspections

EPA’s inspection file holds no inspection for NPDES ILR10ZH5O.

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 ILR10ZH5O.

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, ILR10ZH5O.

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Nearby on the register

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

PROPOSED RESIDENCE - 499 SHERIDAN is in Winnetka, where 0.0% of storm water construction permits have a violation on file. Winnetka has 8 storm water construction permits on EPA's NPDES register, including this permit. The Diversey Harbor-Frontal Lake Michigan subwatershed lists 30 NPDES permits, including this permit, and 87.5% of Winnetka's storm water construction permits carry an earlier issue date.