Clean Water Act discharge permit · NPDES MOG490185
ROCK HILL QUARRIES COMPANY DEMO LANDFILL, St. Louis, MO: NPDES MOG490185 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
ROCK HILL QUARRIES COMPANY DEMO LANDFILL, held by ROCK HILL QUARRIES COMPAN, holds NPDES permit MOG490185. EPA’s file records it issued October 26, 2006 and expiring October 5, 2011. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ROCK HILL QUARRIES COMPANY DEMO LANDFILL |
|---|---|
| Permittee as filed | ROCK HILL QUARRIES COMPAN |
| NPDES ID | MOG490185 |
| 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 | October 26, 2006 |
| Expiration date | October 5, 2011 |
| Issuing agency | MODNR-St. Louis Regional Office |
| Address | St. Louis, MO 63124 |
| Subwatershed | Deer Creek (HUC 071401010504) |
| Other EPA IDs (FRS) | RCRA handler MOD006968325 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 2 | 2 | December 31, 2006 | 33% over the limit |
| Solids, settleable | 2 | 2 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 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 MOG490185.
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 MOG490185 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.