Comment: Cannot even do checks on Radon in the mines, shame, shame, not improved!
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
REGION 8
1595 Wynkoop Street
DENVER, CO 80202-1129
Phone 800-227-8917
http://www.epa.gov/region08
AUG 17 2010
Ref: 8ENF-L
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
David C. Frydenlund
Vice President, Regulatory Affairs and Counsel
Denison Mines (USA) Corp.
1050 17th Street, Suite 950
Denver, CO 80265
Re: Notice of Violation
Dear Mr. Frydenlund:
The United States Environmental Protection Agency (EPA) is issuing thc enclosed Notice
of Violation (NOV) to Denison Mines Corp. (Denison Mines or you) pursuant to section
113 (a)(3) of the Clcan Air Act (the Act), 42 U.S.c. § 7413 (a)(3). EPA finds that Denision Mines
has violated the National Emissions Standards for Hal.ardous Air Pollutants (NESHAPs) for
underground uranium mines, 40 C.F.R. Part 61, Subpart B, at is facility near La Sal, Utah.
FINDING OF VIOLATrONS
31. Emissions of radon-222 from the La Sal mines during 2009 exceeded the emission standards
for six receptors, in violation of40 C.F.R. § 61.22 and Section 112 of the CAli..
32. Denison Mines has not submitted monthly reports following the emissions exceedances of
radon-222 for the year 2009, in violation of 40 C.F.R. § 61.24(b) and Section 112 of the
CAA
33. Emissions ofradon-222 from Vent 1350, Pandora 3, Pandora 7, and Pandora 12 have not
been continuously measured, in violation of 40 C.F.R. § 61.23(a) and Method 115, and
Section 112 of the CII.A.
34. Test Method A-7 has been used to analyze radon-222 in lieu of Test Method A-6 at the La
Sal mines, without prior approval from EPA, in violation of 40 C.F.R. § 61.23(a) and
Method I 15, and Section 112 of the CAA.
NOTICE OF VIOLATrONS
Notice is given to Denison Mines (USA) Corp. that the Administrator of the United States
Environmental Protection Agency, by authority duly delegated to the undersigned, finds that Denison
Mines (USA) Corp. is in violation of Section 112 of the CAA and its implementing regulations, as
set forth in the Finding of Violations.
6
Read more:
http://yosemite.epa.gov/oa/rhc/epaadmin.nsf/filings/1a5ca11ec663bbd185257784001b84da/$file/caa0820100016nov.pdf
