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Mr. Michael L. Brn • <br />April 17, 1980 <br />• Page Two <br />See Sections 5.2.7 <br />and 2.2.3 E <br />(ii) Develop a qualitative discussion of the <br />exposed surface area on the waste dump following <br />reclamation, covering hydrologic obstruction, <br />including precipitation lost to evaporation, <br />interception, depression storage, and infiltration. <br />Infiltration (Runoff) Study <br />See Section 5.2.7 <br />•See Sec. 2.2 <br />(i) Following a summer thunderstorm which <br />generates runoff in Ralston Creek, and which <br />is of sufficient intensity to cover the waste <br />dump, Cotter will collect water samples from <br />Ralston Creek at a point upstream from the <br />NPDES discharge point #001, but downstream <br />from the waste dump, and at a point upstream <br />from the waste dump. The samples will be <br />collected on a daily basis far approximately <br />five (5) days (if this is supported by the in- <br />filtration rate study) or until flow ceases in <br />Ralston Creek. Samples will be analyzed to <br />determine the concentrations of Ra-226 and <br />uranium, total and soluble. <br />2. The amended license application will contain facts with respect <br />to previous operation of the ore sorter plant. <br />See Sec. 5.1 3. The amended license application will contain supplemental <br />facts concerning the functions of the crew which operates the ore sorter. <br />See Sec. 5.2 4. The amended application will establish an environmental moni- <br />toring program which includes: <br />A. Particulate sampling at two locations indicated in the <br />original license application utilizing hi-vol samplers. <br />The parameters will be mass loading and radionuclides. <br />B. Radon monitoring at the two hi-vol locations and at one <br />perimeter background station, utilizing passive environ- <br />mental radon monitors. <br />C. Monthly water sampling above and below the mine waste <br />and sorter reject storage area, with analyses f~~r <br />Ra-226 and uranium, bath total and soluble. <br />D. Semi-annual soil and vegetation samples taken at the <br />water sample locations identified in C. above, with <br />analyses to be performed for radium. Both washed and <br />unwashed samples shall be subjected to analysis. <br /> <br />