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HomeMy WebLinkAboutDRC-2011-007082 - 0901a06880253c87State of Utah GARY R. HERBERT Govemor GREG BELL Lieutenant Governor Department of Environmental Quality Amanda Smith Executive Director DIVISION OF RADIATION CONTROL Rusty Lundberg Director July 12, 2011 CERTIFIED MAIL RETURNED RECEIPT REOUESTED Mr. David G. Frydenlund Vice President, Regulatory Affairs and Counsel Denison Mines (USA) Corp. (DUSA) Independence Plaza, Suite 950 1050 Seventeenth Street Denver, CO 80265 SUBJECT: Denison Mines (USA) Corp. Submittal of Plan and Schedule for an update of the Cell 1 and Cell 3 Leak Detection Systems at the White Mesa Mill Near Blanding, Utah - Conditional Approval Dear Mr. Frydenlund: The Division of Radiation Control (DRC) has reviewed the June 1, 2011 Plan and Schedule (hereafter "Plan") that was submitted by Denison Mines (USA) Corp. (DUSA) for the Cell 1 and Cell 3 Leak Detection Systems (LDS) monitoring upgrade. The submitted Plan is in response to a DRC May 10, 2011 Revised Confirmatory Action Letter, that required DUSA to submit a plan and schedule to replace the current leak detection method and equipment at the Cells 1 and 3 LDS standpipes. The DRC has decided to conditionally approve the proposed plan and schedule on the following conditions: 1. The proposed Cell 3 LDS standpipe design extension shall be constructed to allow a video log to be performed to the bottom of the standpipe where the liquids may collect. 2. The installation and reconfiguration of the Cell 1 and Cell 3 LDS monitoring upgrade will be completed within 45 days of your receipt of this letter. 3. DUSA will submit pictures documenting the Tailings Cell 3 standpipe extension and the new upgraded LDS monitoring equipment for both Tailings Cells 1 and 3 standpipe covers 195 North 1950 West • Salt Lake City, UT Maihng Address: P.O. Box 144850 • Salt Lake City, UT 84114-4850 Telephone (801) 536-4250 • Fax (801) 533-4097 • T.D.D. (801) 536-4414 www.deq.utah.gov Printed on 100% recycled paper Page 2 n^ank you for your cooperation. Please contact Dean Henderson at 801-536-0046 with any questions. UTAH WATER QUALITY BOARD Rusty Lundberg Co-Executive Secretary RL/DCH i JO CO JD r-^ ET ru cr a a a a CO JQ i-=! tr a ! a (Domestic Mail Only; No Insurance Coverage Provided) . . OFFICIAL U«?F Postage $ Certified Fee Postmark ,^ . R©*"ni Receipt Fee Postmark RE: 7/12/11; CONDITIONAL APPROVAL / DH David 0 Frydenlund Vice President & General Counsel Denison Mines (USA) Corp (DUSA) 1050 17th ST STE 950 Denver GO 80265 • Complete Items 1,2, and 3. Also complete item 4 if Restricted Delivery is desired. • Print your name and address on the reverse so that we can return the card to you. B Attach this card to the back of the mailpiece, or on the front if space permits. 1. Article Addressed to: TION ON DELIVERY David G Frydenlund Vice President & General Counsel Denison Mines (USA) Gorp (DUSA) 1050 17th ST STE 950 Denver GO 80265 Is delivery address different from item 1 ? If YES, enter deiiveiy=addres^elow: RE: 7/12/11; CONDITIONAL APPROVAL / DHI^^^®' "^•Certified Mail Mail • Registered «f?gfr'(5f Receipt fdr?Merchandise • Insured Mai^,,,C^fiQj|i^rn! £/ 4. Restricted Delivery? (Extra Fee) • Yes 2. Article Number (Transfer from service label) 7om ibao DOOl ^s=iJi:M4i2^ PS Form 3811, February 2004 Domestic Return Receipt 102595-02-M-1540 t