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HomeMy WebLinkAboutDRC-2011-007261 - 0901a0688026138aOINISO MINES August 24, 2011 VIA E-MAIL AND OVERNIGHT DELIVERY Mr. Rusty Lundberg Utah Department of Environmental Quality 195 North 1950 West P.O. Box 144850 Salt Lake City, UT 84114-4850 .201 1-007 26 1 Denison Mines (USA) Corp. 105017th street, Suite 950 Denver, CO 80265 USA Tel: 303 628-7798 Fax:303 389-4125 www.denisonmines.com Re: State of Utah Groundwater Discharge Permit ("GWDP") No. UGW370004 Notice of Violation and Groundwater Corrective Action Order, Docket No. UGW20-01 - DUSA Plan and Work Schedule ("Plan") to Drill and Install TW4-27 - Response to Conditional Approval Letter Dear Mr. Lundberg: This letter provides Denison Mines (USA) Corp's ("Denison's") response to the Utah Division of Radiation Control's ("DRC's") May 26, 2011 Conditional Approval Letter of August 15, 2011 which Denison received on August 19, 2011. Denison appreciates DRC's timely approval of our Plan. We agree in principal with DRC's proposed changes to item 2(c) of that Plan. We recommend the following additional word changes for further clarification. Denison's proposed wording clarifications have been highlighted in yellow, below. 2(c) If the Executive Secretary determines, Sfter review of the se^jpncl Chloroform Monitoring Report that! Contains the second of the two quarters of data -that the criteria specified in paragraph 1.2 above have not been satisfied with the addition of TW4-27, then Denison will submit within 30 calendar davs-of written nofce |from| the Executive Secretary after submittal of tho Quarterly Chloroform Monitoring Report that contains the second of tho two quarters of data roforrod to abovo, a plan and schedule for installation of one or more additional chloroform monitoring wells. The new welKs) must show that the 70 ua/l chloroform isoconcentration line remains hydraulically up gradient to the new welKs) and the groundwater contour lines must show the new welKs) are hydraulically down gradient to TW4-4 and TW4-6. Please contact me if you have any questions or require any further information. Yours very truly, DENISON MINES (USA) CORP. Jo Ann Tischler Director, Compliance and Permitting N:\Chloroform\New Cfm well SE\Response to 08.15.11 cond approv Itr TW4-27\08.24.11 response to cond approv Itr.doc Letter to Mr. Rusty Lundberg Chloroform RFI Response August 24, 2011 Page 2 cc: David C. Frydenlund Harold R. Roberts Stewart Smith, Hydrgeochem David E. Turk K.Weinel Central files Attachments DENISOisOi MINES