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REV09639
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REV09639
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Entry Properties
Last modified
8/25/2016 1:10:07 AM
Creation date
11/21/2007 10:06:08 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
Revision
Doc Name
7.0 WATER BALANCE 7.1 WATER BALANCE MODEL
Type & Sequence
AM8
Media Type
D
Archive
No
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III IIIIIIIIIIIII III <br />999 <br />• <br />March 2000 <br />-55- <br />993-2099.150 <br />7.0 WATER BALANCE <br />' ~. <br />• <br />7.1 Water Balance Model <br />A water balance analysis was completed to quantify the probable volume of water gained <br />by precipitation, lost to evaporation, or retained in the ore matrix as a result of the <br />expanded VLF area. A montlily model was developed for the period from January 1995 <br />through January 2020 for the entire VLF including the Phase IV area. The model extends <br />the time period 8 years beyond the point when it is anticipated that the VLF is fully <br />loaded, and simulates the cyclic climatic conditions that could develop when the facility is <br />being leached, rinsed, and the loss of moisture to ore wetting no longer occurs. <br />As identified in Amendment No. 6 (CC&V 1993), a computer model was developed based <br />on the following equation: <br />BS+P+OMDEL=E+OMrc+PS <br />• <br />where: <br />BS = <br />P = <br />~MDEL - <br />E _ <br />OMEC = <br />PS <br />I:\99\1099\FINAL <br />the barren solution applied to the ore <br />the precipitation that falls directly onto the ore <br />moisture contained in the matrix of the ore delivered to the VLF <br />evaporation loss from the active and inactive leaching areas <br />moisture contained in the matrix of the ore at field capacity after <br />leaching and draindown <br />pregnant solution pumped from PSSA HVSCS to ADR. <br />Golder Associates <br />
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