Clean Water Act discharge permit · NPDES MOG490617
ARNOLD READY MIX IMPERIAL, Imperial, MO: NPDES MOG490617 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ARNOLD READY MIX IMPERIAL, held by ARNOLD READY MIX, holds NPDES permit MOG490617, which discharges to Tributary To Rock Cr.. EPA’s file records it issued June 28, 2017 and expiring April 30, 2022. 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 | ARNOLD READY MIX IMPERIAL |
|---|---|
| Permittee as filed | ARNOLD READY MIX |
| NPDES ID | MOG490617 |
| 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 | June 28, 2017 |
| Expiration date | April 30, 2022 |
| Address | Imperial, MO 63052 |
| Receiving water | Tributary to Rock Cr. |
| Subwatershed | Rock Creek (HUC 071401010601) |
| SIC | 3273 – Ready-Mixed Concrete |
| Other EPA IDs (FRS) | ICIS-AIR source MO0000002909900015 |
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
- 5Pollutants on file
- 5Under a numeric limit
- 5With 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 |
|---|---|---|---|---|---|
| pH | 2 | 10 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 10 | 0 | ||
| Solids, total suspended | 2 | 6 | 0 | ||
| Solids, settleable | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOG490617.
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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 30, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 30, 2020 | Reporting Violations - Failure to Submit DMRs | ST6 |
| January 17, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 17, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| January 17, 2020 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| January 17, 2020 | Permit Violations - Unapproved Operation | ST6 |
| January 17, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| January 17, 2020 | WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
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 MOG490617 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.