Clean Water Act discharge permit · NPDES ILR10ZG0H

ALPINE ROAD SOLAR, Rockford, IL: NPDES ILR10ZG0H 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

ALPINE ROAD SOLAR, held by Knobelsdorff Enterprises, holds NPDES permit ILR10ZG0H. EPA’s file records it issued August 29, 2025 and expiring August 31, 2028.

ALPINE ROAD SOLAR, Rockford, Illinois: Coverage under a general permit ILR10ZG0H, held by Knobelsdorff Enterprises; Construction stormwater; Effective; issued August 29, 2025, term to August 31, 2028, by IEPA.

Illinois holds 5,215 Construction stormwater coverages of this permit type in EPA’s file; 3,506 were issued before ILR10ZG0H. Knobelsdorff Enterprises holds 2 permits in Illinois.

Other permits held by Knobelsdorff Enterprises

ODYSSEY SONORA SOLAR, Sonora Township: ILR10ZFC2, issued April 16, 2025

Coverages issued nearest ILR10ZG0H

August 28, 2025: 6800 FOREST HILLS ROAD - PHASE 2, SITE IMPROVEMENTS FOR ELITE SPORTS COMPLEX, Loves Park, ILR10ZG0C, held by To be determined
August 28, 2025: VILLAS OF HIDDEN VALLEY, Homer Glen, ILR10ZG0D, held by Marth Construction
August 29, 2025: 1900 LAKE AVE GLENVIEW, Glenview, ILR10ZFWR, held by TBD
August 29, 2025: SUNSET PARK PLAZA LOT 4, Glen Carbon, ILR10ZG0E, held by Plocher Construction Company, Inc.
August 29, 2025: HARPER COLLEGE LEARNING AND CAREER CENTER - PARKING LOT RECONSTRUCTION, Prospect Heights, ILR10ZG0F, held by TBD
August 29, 2025: STOCKTON VETERINARY CLINIC - LARGE ANIMAL FACILITY - 2025, Stockton, ILR10ZG0I, held by Gary Saam Construction Company, Inc.
August 29, 2025: MORTON BUILDING, Antioch, ILR10ZG0K, held by TBD
August 30, 2025: FREEDOM GRAPHIC SYSTEMS - PROPOSED BUILDING & SITE IMPROVEMENTS, Aurora, ILR10ZG0M, held by Wellspring Construction Group
August 30, 2025: LITCHFIELD MINE RECLAMATION SITE, Litchfield, ILR10ZG0Q, held by May Excavating
August 31, 2025: PARKING LOT F RECONSTRUCTION, Chillicothe, ILR10ZG0U, held by Aupperle Construction

ALPINE ROAD SOLAR among its neighbors

EPA’s permit file holds 39 discharge permits in the City of Rockford-Rock River subwatershed (HUC 070900050401), ILR10ZG0H among them.

Other permits in the City of Rockford-Rock River subwatershed (HUC 070900050401)

11TH STREET RECONSTRUCTION, Rockford: ILR10ZEWG, minor permit, permit term to August 31, 2028
2729 KISHWAUKEE STREET, Rockford: ILR10ZFCA, minor permit, permit term to August 31, 2028
A & B FREIGHT-FALUND STREET, Rockford: ILR001905, minor permit, permit term to June 1, 2008
AUTOZONE STORE NO. 0650, Rockford: ILR10ZF8A, minor permit, permit term to August 31, 2028
BEYER STADIUM IMPROVEMENTS, Rockford: ILR10ZG2P, minor permit, permit term to August 31, 2028
CLARENCE HICKS MEMORIAL SPORTS PARK IMPROVEMENTS, Rockford: ILR10ZE18, minor permit, permit term to August 31, 2028
CULVER'S OF ROCKFORD, Rockford: ILR10ZH9T, minor permit, permit term to August 31, 2028
DASCO PRO INC, Rockford: IL0060003, minor permit, discharging to ROCK RIVER, permit term to September 30, 2011
ESTWING MANUFACTURING COMPANY, Rockford: ILR004056, minor permit, permit term to June 1, 2008
FAITH CENTER OF ROCKFORD, Rockford: ILR10ZGTX, minor permit, permit term to August 31, 2028

What the register holds for ALPINE ROAD SOLAR: its NPDES ID, its permit type and status, its dates, its address in Rockford, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILR10ZG0H.

Identity

Facility as filed	ALPINE ROAD SOLAR
Permittee as filed	Knobelsdorff Enterprises
NPDES ID	ILR10ZG0H
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	August 29, 2025
Expiration date	August 31, 2028
Issuing agency	IEPA
Address	Rockford, IL 61109
Subwatershed	City of Rockford-Rock River (HUC 070900050401)

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 ILR10ZG0H.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILR10ZG0H.

Inspections

EPA’s inspection file holds no inspection for NPDES ILR10ZG0H.

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 ILR10ZG0H.

Watch this permit

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Nearby on the register

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

A violation on file is recorded for 0.0% of Rockford's 68 storm water construction permits. The register lists 68 storm water construction permits for Rockford, and ALPINE ROAD SOLAR is among them. The City of Rockford-Rock River subwatershed (HUC 070900050401) holds 39 NPDES permits, and 54.4% of Rockford's 68 storm water construction permits carry an earlier issue date than this permit.