Clean Water Act discharge permit · NPDES NMR053311
AMBROSIA LAKE MILL, Grants, NM: NPDES NMR053311 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
AMBROSIA LAKE MILL, held by Rio Algom Mining LLC, holds NPDES permit NMR053311. EPA’s file records it issued November 25, 2015 and expiring June 3, 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 | AMBROSIA LAKE MILL |
|---|---|
| Permittee as filed | Rio Algom Mining LLC |
| NPDES ID | NMR053311 |
| 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 | November 25, 2015 |
| Expiration date | June 3, 2020 |
| Issuing agency | U.S. EPA |
| Address | Grants, NM 87020 |
| Subwatershed | Martin Draw (HUC 130202070302) |
| SIC | 1094 – Uranium-Radium-Vanadium Ores |
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
- 16Pollutants on file
- 16Under a numeric limit
- 16With 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 | 10 | 20 | 0 | ||
| Turbidity | 5 | 10 | 0 | ||
| Solids, total suspended | 5 | 10 | 0 | ||
| Arsenic, total [as As] | 5 | 10 | 0 | ||
| Beryllium, total [as Be] | 5 | 10 | 0 | ||
| Cadmium, total [as Cd] | 5 | 10 | 0 | ||
| Copper, total [as Cu] | 5 | 10 | 0 | ||
| Iron, total [as Fe] | 5 | 10 | 0 | ||
| Lead, total [as Pb] | 5 | 10 | 0 | ||
| Nickel, total [as Ni] | 5 | 10 | 0 | ||
| Silver, total [as Ag] | 5 | 10 | 0 | ||
| Zinc, total [as Zn] | 5 | 10 | 0 | ||
| Antimony, total [as Sb] | 5 | 10 | 0 | ||
| Selenium, total [as Se] | 5 | 10 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 5 | 10 | 0 | ||
| Mercury, total [as Hg] | 5 | 10 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES NMR053311.
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 NMR053311.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, NMR053311.
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How we handle your data → Privacy
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 NMR053311 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.