DRC-2010-002790 - 0901a0688017abf0

State of Utah
GARY R.HERBERT
Govemor
GREG BEIX
Lieutenant Governor
Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF RADIATION CONTROL
Dane L. Finerfrock
Director
DfiC-2010-002790
March 30, 2010
David C. Frydenlund
Vice President and General Counsel
Denison Mines (USA) Corp. (DUSA)
1050 Seventeenth Street. Suite 950
Denver, CO 80265
Dear Mr. Frydenlund:
SUBJECT: March 22, 2010 DUSA Response Letter Transmitting Revised DMT Plan and CeU
4A O&M Plan for Review; February 3, 2010 DRC Request for Information (RFI)
on Engineering Inspection Module 75E; Approval of Revised DMT Plan and
Cell 4A O&M Plan; and Inspection Closeout
We received your transmittal letter dated March 22, 2010 subject as above. We have reviewed the
revised White Mesa Mill Tailings Management Syslem and Discharge Minimization Technology
Monitoring Plan (DMT Plan) known as revision 3/10 Revision: Denison-7, and the Cell 4A BAT
Monitoring, Operations and Maintenance Plan (O&M Plan) known as revision 3/10 Revision
Denison 1.4. These revisions of the plans are hereby approved.
As outhned in the subject DRC letter of Febmary 3, 2010, the subject transmitted plans contain all
the changes DRC requested. The following verbiage was added:
1. The DMT Plan was changed to add verbiage that is summarized below:
• A 4 ft. buffer is maintained at the periphery of the storage area which is
absent bulk material in order to assure that the materials do not encroach
upon the boundary of the storage area.
• The requirement to notify the Executive Secretary in accordance with Parts
T.D.6 and I.G.3 of the Groundwater Discharge Permit must be adhered to
when the solulion leve] trigger for Cell 4A has been exceeded.
2. An O&M Plan change added verbiage conceming liner protecflng rub sheets that,
"...In addition to the splash pads described in f) above, rub sheets are installed
beneath all piping entering or exiting Cell 4A that is not located directly on the
splash pads."
168 North 1950 West • Salt Lake City, UT
Mailine Address: P.O. Box 144850 • Salt Lake City. UT 84114-4850
Telephone (800 :^36-4250 • Fax [phone] • T.D.D. (ROl) 536-4414
iv\' w.deq iirnh
Pniiierf on 1001- recycled |i;ipei
Mr. David Frydenlund
March 30, 2010""'
Page 2
Yonr submittal and our approval of the above complete the information requests resulting from
our 2009 Engineering Inspection 75E, which is now closed-out. If you have any questions on the
above, please contact Mr. Rupp.
UTAH WATER QUALTTY BOARD
Dane L. Finerfpck,
Co-Executive Secretary
DLF/DAR: dr
F:\DUS A\ lnspeciions\ DMT& BAT\2009\ApprvI of DMT&B AT Plans: lnspCIoseout.doc