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Clean Water Act discharge permit · NPDES ILG551072

MAIN LINE STATION REST AREA (I-57) STP, Buckley, IL: NPDES ILG551072 discharge permit, effluent exceedances, inspections, penalties

MAIN LINE STATION REST AREA (I-57) STP, held by ILLINOIS DEPT OF TRANSPORTATION, holds NPDES permit ILG551072, which discharges to Spring Creek. EPA’s file records it issued April 28, 2014 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 filedMAIN LINE STATION REST AREA (I-57) STP
Permittee as filedILLINOIS DEPT OF TRANSPORTATION
NPDES IDILG551072
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedApril 28, 2014
Expiration dateJune 30, 2018
AddressBuckley, IL 60918
Receiving waterSPRING CREEK
SubwatershedHeadwaters Spring Creek (HUC 071200020805)
SIC9621 – 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

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended58141March 31, 2023197% over the limit
BOD, carbonaceous [5 day, 20 C]45416September 30, 2021340% over the limit
Oxygen, dissolved [DO]11211August 31, 202395% over the limit
pH2213May 31, 2022
Flow, in conduit or thru treatment plant4340
Chlorine, total residual1100
BOD, 5-day, 20 deg. C180
Nitrogen, ammonia total [as N]110
Coliform, fecal general110

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILG551072.

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.

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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 ILG551072 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit ILG551072 for the Main Line Station Rest Area (I-57) STP in Buckley, IL, held by the Illinois Dept of Transportation, which discharges to Spring Creek and is administratively continued as a minor discharger. The page lists 4 pollutants under a numeric limit and 4 pollutants with an effluent exceedance, under the permit issued April 28, 2014 and expiring June 30, 2018.