Clean Water Act discharge permit · NPDES MO0138371
ROCK HILL QUARRIES COMPANY DEMO LANDFILL, St. Louis, MO: NPDES MO0138371 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 23Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
ROCK HILL QUARRIES COMPANY DEMO LANDFILL, held by Rock Hill Quarries Company, holds NPDES permit MO0138371, which discharges to Tributary To Deer Creek. EPA’s file records it issued December 14, 2016 and expiring September 30, 2021. 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 | ROCK HILL QUARRIES COMPANY DEMO LANDFILL |
|---|---|
| Permittee as filed | Rock Hill Quarries Company |
| NPDES ID | MO0138371 |
| 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 |
| Program | Industrial stormwater |
| Issued | December 14, 2016 |
| Expiration date | September 30, 2021 |
| Address | St. Louis, MO 63124 |
| Receiving water | Tributary to Deer Creek |
| Subwatershed | Deer Creek (HUC 071401010504) |
| SIC | 4953 – Refuse Systems |
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
- 25Pollutants on file
- 23Under a numeric limit
- 10With 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 | 2 | 1 | 1 | December 31, 2019 | |
| Arsenic, total recoverable | 1 | 1 | 0 | ||
| Selenium, total recoverable | 1 | 1 | 0 | ||
| Nickel, total recoverable | 1 | 1 | 0 | ||
| Silver total recoverable | 1 | 1 | 0 | ||
| Lead, total recoverable | 1 | 1 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 1 | 1 | 0 | ||
| Chromium, trivalent total recoverable | 1 | 1 | 0 | ||
| Antimony, total recoverable | 0 | 1 | 0 | ||
| Benzene | 0 | 1 | 0 | ||
| Solids, total suspended | 1 | 0 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 1 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| Iron, total recoverable | 1 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 1 | 0 | 0 | ||
| Zinc, total recoverable | 1 | 0 | 0 | ||
| Aluminum, total recoverable | 1 | 0 | 0 | ||
| Cadmium, total recoverable | 1 | 0 | 0 | ||
| Copper, total recoverable | 1 | 0 | 0 | ||
| Ethylbenzene | 1 | 0 | 0 | ||
| Chloride | 1 | 0 | 0 | ||
| Rainfall | 1 | 0 | 0 | ||
| Chemical oxygen demand [COD] | 1 | 0 | 0 | ||
| Storm water flow | 1 | 0 | 0 | ||
| Chlorides + Sulfates | 1 | 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 MO0138371.
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 MO0138371 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.