Laserfiche WebLink
Memorandum in Response to Notice of Determination of Designation Mining Operation (DMO); DRMS File Numbers <br />M-]977-416, M-1978-039 HR, M-1977-285, M-1980-055 HR, M-1981-021 and M-1977-032. <br />previously, the rock hosting the ore body is the Salt Wash Member of the Morrison <br />Formation and it is not anticipated that the waste rock will be acid generating. <br />Because the waste rock is all generated from the same geologic member, Denison <br />proposes to take three representative. samples from each of the surfaces of the Sunday, <br />West Sunday and Topaz waste rock areas (nine samples total) and perform an Acid <br />Base Accounting (ABA) Test (from a certified lab) to demonstrate that the waste rock <br />from this member is not acid producing. Collection will occur once this procedure <br />has been agreed upon by the Division. Results of these tests will be provided to the <br />Division within one month of their collection. <br />In addition to providing information necessary to prepare the EPPs for the mines, it is <br />hoped that the foregoing sampling will provide enough information to enable Denison <br />and the Division to determine whether or not acid-mine drainage will occur as a result <br />of mining operations, which is one of the criteria tli'at must be addressed under Rule <br />7.2.6(1). ' <br />With respect to toxic forming materials, Denison will also take three representative <br />samples from each of the waste rock areas at the Sunday, West Sunday and Topaz <br />mines (nine samples total) and perform a Meteoric Water Mobility Procedure <br />(MWMP) on the waste rock (performed by a certified lab). The MWMP will be <br />performed and analytes will be taken for the constituents shown in the table below: <br />Proposed Water Quality Analytes for Uranium <br />Mine Geo-Chemical Anal sis <br />Field H <br />Electrical Conductivi <br />Aluminum <br />Arsenic <br />Barium ' <br />Cadmium ' <br />Co er` <br />Iron <br />Lead <br />Mol bdenum <br />Nickel ' <br />Nitrate + Nitrite <br />Selenium ~ ' <br />Sulfate <br />Uranium <br />Vanadium <br />Zinc <br />Collection will occur once this procedure has. been agreed upon by the Division. <br />Results of these tests will be provided to the Division within one month of their <br />collection. <br />4 <br />