Clean Water Act discharge permit · NPDES IL0068144
PRAIRIE DU ROCHER MINE, Prairie Du Rocher, IL: NPDES IL0068144 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
PRAIRIE DU ROCHER MINE, held by MISSISSIPPI LIME COMPANY, holds NPDES permit IL0068144, which discharges to Tribs To One Mile Race Creek. EPA’s file records it issued September 25, 2015 and expiring September 30, 2020. 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 | PRAIRIE DU ROCHER MINE |
|---|---|
| Permittee as filed | MISSISSIPPI LIME COMPANY |
| NPDES ID | IL0068144 |
| 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 | September 25, 2015 |
| Expiration date | September 30, 2020 |
| Address | Prairie Du Rocher, IL 62277 |
| Receiving water | TRIBS TO ONE MILE RACE CREEK |
| Subwatershed | Prairie Du Rocher Creek-Mississippi River (HUC 071401010909) |
| SIC | 1422 – Crushed And Broken Limestone |
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
- 7Pollutants on file
- 6Under a numeric limit
- 7With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 87 | 3 | February 28, 2022 | 177% over the limit |
| pH | 4 | 85 | 1 | April 30, 2017 | |
| Flow, in conduit or thru treatment plant | 2 | 42 | 0 | ||
| Oil and grease | 0 | 8 | 0 | ||
| Oil & Grease | 2 | 6 | 0 | ||
| Mercury, total [as Hg] | 2 | 6 | 0 | ||
| Offensive Conditions | 1 | 1 | 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 IL0068144.
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 IL0068144 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.