DRC-2011-007103 - 0901a06880257a88

DENISO
MINES
Denison Mines Corp.
6425 S. IHighway 191, PO Box 809
Blanding, UT 84511
USA
Tel : [phone];
Fax: [phone]
www.denis6nmines.com
VIA PDF AND EXPRESS DELIVERY
June 28, 2011
Mr. Rusty Lundberg
Co-Executive Secretary
Utah Water Quality Board
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84116-3097
Re: White Mesa Mill Annual Seeps and Springs Sampling-
Notice Pursuant to Utah Groundwater Discharge Permit UGW370004.
Dear Mr. Lundberg:
Denison Mines (USA) Corp. is providing this letter to notify the Utah Department of Environmental Quality of
the White Mesa Mill's (the "Mill's") annual seeps and springs sampling event as required by Utah Groundwater
Discharge Permit (the "GWDP") UGW370004. The Mill plans to begin the sampling event on Wednesday,
July 13,2011:
The Mill staff will attempt to sample the following locations: Coral Canyon Seep, Corral Seep, Ruin Springs,
Cottonwood Seep, Westwater Seep, and Entrance Seep, consistent with the GWDP and the March 2009
Sampling Plan for Seeps and Springs (the "Sampling Plan"). As described in the Sampling Plan, several of
these locations have historically been too dry for sampling. Per the Sampling Plan, beginning Wednesday, July
13, 2011 the Mill staff will make three attempts at sampling each location and will document during each
attempt whether or not conditions permit development and sampling.
If you have any questions or require further assistance, please contact Mr. Dan Hillsten, Mill Manager; or Mr.
Ryan Palmer at [phone].
David Turk
Radiation Safety Officer
DENISON MINES (USA) CORP.
cc: Richard Bartlett
David C. Frydenlund
Ron Hochstein
Ryan Palmer
Harold Roberts
Jo Ann Tischler
DUSA Central Files
DENISO MINES