Clean Water Act discharge permit · NPDES ILG840216

AZ STONE, Elmhurst, IL: NPDES ILG840216 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
4Pollutants under a numeric limit
0Pollutants with an effluent exceedance

AZ STONE, held by ELMHURST CHICAGO STONE CO - PLAINFIELD, holds NPDES permit ILG840216, which discharges to Lily Cache Creek. EPA’s file records it issued August 28, 2013 and expiring February 28, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	AZ STONE
Permittee as filed	ELMHURST CHICAGO STONE CO - PLAINFIELD
NPDES ID	ILG840216
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	August 28, 2013
Expiration date	February 28, 2017
Address	Elmhurst, IL 60490
Receiving water	LILY CACHE CREEK
Subwatershed	Lily Cache Creek (HUC 071200040807)
Other EPA IDs (FRS)	RCRA handler IL0000875708; ICIS-AIR source IL000197820AAB

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

4Pollutants on file
4Under a numeric limit
4With 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
pH	2	154
Solids, total suspended	2	154
Flow, in conduit or thru treatment plant	1	78
Offensive Conditions	1	77

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES ILG840216.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILG840216.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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, ILG840216.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID ILG840216 there.

Nearby on the register

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

This public-records page covers the Clean Water Act NPDES permit ILG840216 held by ELMHURST CHICAGO STONE CO - PLAINFIELD for the AZ STONE facility in Elmhurst, IL, which discharges to Lily Cache Creek in subwatershed HUC 071200040807. The permit is listed as administratively continued, a Minor Discharger class 4 facility, with 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and it was issued August 28, 2013 with an expiration date of February 28, 2017. Status and dates reflect EPA's permit file as loaded on September 15, 2026.