Clean Water Act discharge permit · NPDES IL0062618
MATHESON TRI-GAS INC, Joliet, IL: NPDES IL0062618 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 2Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
MATHESON TRI-GAS INC holds NPDES permit IL0062618, which discharges to Unnamed Quarry Trib To Sugar Run. EPA’s file records it issued April 26, 2018 and expiring April 30, 2023. 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 | MATHESON TRI-GAS INC |
|---|---|
| Permittee as filed | MATHESON TRI-GAS INC |
| NPDES ID | IL0062618 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 26, 2018 |
| Expiration date | April 30, 2023 |
| Address | Joliet, IL 60433 |
| Receiving water | UNNAMED QUARRY TRIB TO SUGAR RUN |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Sugar Run (HUC 071200040901) |
| SIC | 2813 – Industrial Gases |
| Other EPA IDs (FRS) | RCRA handler ILD005115753; ICIS-AIR source IL000197809AAX |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 3Pollutants on file
- 2Under a numeric limit
- 3With 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 |
|---|---|---|---|---|---|
| pH | 0 | 35 | 1 | November 30, 2008 | |
| Flow, in conduit or thru treatment plant | 2 | 45 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 22 | 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 IL0062618.
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 IL0062618 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.