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2009-06-08_REVISION - M1997032 (24)
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2009-06-08_REVISION - M1997032 (24)
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Last modified
6/15/2021 2:20:25 PM
Creation date
6/10/2009 8:41:08 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1997032
IBM Index Class Name
REVISION
Doc Date
6/8/2009
Doc Name
EPP (AM-01) Attachment 6 & 7 of Attachment A (part 4)
From
Denison Mines
To
DRMS
Type & Sequence
AM1
Email Name
RCO
Media Type
D
Archive
No
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Ca/cu/alion Brief <br />E811177afio17 0606Mo1911017 rhroughDeue%,omenfRoNrAmas Using UNSAT-h <br />• <br />• <br />• C MM <br />Table 1. Summary of UNSAT-h modeling results (all results in centimeters). <br />Model Run Annual Annual Annual Annual Annual Annual <br /> Potential Precipitation Actual Runoff Infiltration Percolation <br /> ET (in.) (in.) Evap. (in.) (in.) (in.) <br /> (in.) <br />West 67.0 12.8 12.7 0.0527 12.7 0.0103 <br />Sunday- <br />Average <br />Precipitation <br />West 67.0 19.9 18.07 0.190 19.7 0.0106 <br />Sunday- <br />Wettest year <br />on Record <br />Topaz- 67.0 12.8 12.7 0.0185 12.7 0.00822 <br />Average <br />Precipitation <br />Topaz- 67.0 19.9 18.1 0.0619 19.8 0.00849 <br />Wettest year <br />on Record <br />Based on the UNSAT-h simulations, the estimated basal liquid flux is estimated to <br />range from 0.027 to 0.034 centimeters per year. The simulations show the importance <br />of evaluating upward movement of water from the rock piles caused by evaporation <br />because the majority of water that infiltrates the surface of the development rock piles <br />evaporates in the semi-arid environment present at the Sunday Mines Group. <br />Data regarding mass balance errors for the UNSAT-h simulations are included in <br />Attachment 7. The annual mass balance errors for the simulations summarized in <br />Table 1 range from 1.8 x 10-4 to 5.4 x 10-5 centimeters. <br />A sensitivity analysis was also run in which several model inputs were varied to <br />examine the effect of the changes. This information is summarized in Table 2. <br />T:\64986-Denison Mines\Task Order 3 - DMO Sampling and Analysis Plan\Task 3.12. Soil, Ore, Rock Data Assessment Report\Unsat_In modelsVinal models\Final Report\calc briet.doc
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