Clean Water Act discharge permit · NPDES MOG491216
SHAMROCK PROPPANTS, Wellsville, MO: NPDES MOG491216 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
SHAMROCK PROPPANTS, held by Shamrock Group LLC, holds NPDES permit MOG491216, which discharges to Coon Cr.. EPA’s file records it issued September 8, 2011 and expiring October 5, 2011. 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 | SHAMROCK PROPPANTS |
|---|---|
| Permittee as filed | Shamrock Group LLC |
| NPDES ID | MOG491216 |
| 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 |
| Program | Industrial stormwater |
| Issued | September 8, 2011 |
| Expiration date | October 5, 2011 |
| Issuing agency | MODNR-St. Louis Regional Office |
| Address | Wellsville, MO 63384 |
| Receiving water | Coon Cr. |
| Subwatershed | Coon Creek (HUC 071100080104) |
| NAICS | 212312 – Crushed and Broken Limestone Mining and Quarrying |
| SIC | 3295 – Minerals, Ground Or Treated |
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
- 2Pollutants on file
- 0Under a numeric limit
- 2With 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 | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 0 | 30 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 0 | 30 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOG491216.
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 MOG491216.
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 MOG491216 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.