# DENISON MINES USA CORPORATION
> **Administrative - Formal** · FY2012 · — · Final Order With Penalty
## Case
- **Activity ID:** `2600077766`
- **Case Number:** 08-2012-0009
- **Type:** Administrative - Formal
- **Lead:** EPA
- **Outcome:** Final Order With Penalty
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** —
## Defendants
- DENISON MINES USA CORPORATION (complaint) (settlement)
## Summary

THIS CONSOLIDATED COMPLAINT AND CONSENT AGREEMENT IS ISSUED TO DENISON MINES USA CORPORATION. DURING AN EPA INSPECTION THAT OCCURED APRIL 27, 2010 OF THE LA SAL MINES, VENT 1350 WAS OBSERVED TO BE VENTING TO THE ATMOSPHERE WITHOUT MONITORING. EMISSIONS OF RADON-222 FROM VENT 1350 HAVE NOT BEEN CONTINUOUSLY MEASURED FROM ON OR ABOUT APRIL 18 THROUGH APRIL 27, 2010, JANUARY 12 THROUGH FEBRUARY 15, 2010, AND MARCH 31 THROUGH APRIL 8, 2010. EMISSIONS OF RADON-222 FROM THE VENTS NAMED PANDORA 3, PANDORA 7, AND PANDORA 12 HAVE NOT BEEN CONTINUOUSLY MEASURED FROM ON OR ABOUT JANUARY THROUGH APRIL 2010.

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*Source: [EPA ECHO](https://echo.epa.gov/) · AI Analytics · CC0 1.0*