Clean Water Act discharge permit · NPDES ILG551087

IDOT I-57 UNION COUNTY NORTH REST AREA STP, Anna, IL: NPDES ILG551087 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
1Pollutants with an effluent exceedance

IDOT I-57 UNION COUNTY NORTH REST AREA STP, held by ILLINOIS DEPARTMENT OF TRASPORTATION REST AREA, holds NPDES permit ILG551087, which discharges to Unnamed Trib Of Cache River. EPA’s file records it issued February 11, 2015 and expiring June 30, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	IDOT I-57 UNION COUNTY NORTH REST AREA STP
Permittee as filed	ILLINOIS DEPARTMENT OF TRASPORTATION REST AREA
NPDES ID	ILG551087
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	February 11, 2015
Expiration date	June 30, 2018
Address	Anna, IL 62906
Receiving water	UNNAMED TRIB OF CACHE RIVER
Subwatershed	Elk Creek-Green River (HUC 051100030505)
SIC	9621 – Regulation, Administration Of Transportation

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

9Pollutants on file
9Under a numeric limit
8With a violation of any kind
1With 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	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Oxygen, dissolved [DO]	1	2	1	March 31, 2024	10% over the limit
Solids, total suspended	5	26	0
Flow, in conduit or thru treatment plant	4	22	0
BOD, carbonaceous [5 day, 20 C]	4	20	0
pH	2	10	0
BOD, 5-day, 20 deg. C	1	6	0
Nitrogen, ammonia total [as N]	1	1	0
Coliform, fecal general	1	1	0
Chlorine, total residual	1	0	0

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 ILG551087.

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

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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 ILG551087 there.

Nearby on the register

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

This public-records page covers NPDES permit ILG551087 for the IDOT I-57 Union County North Rest Area STP in Anna, IL, held by the Illinois Department of Transportation rest area and discharging to Unnamed Trib Of Cache River. The permit is listed as administratively continued, with a Minor Discharger class of 9, 1 pollutant under a numeric limit, and 1 pollutant with an effluent exceedance.