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TABLE 204,9-2 <br />CRITERIA FOR EVALUATING SOIL SUITABILITY <br />PARAMETER - UNITS THRESHOLt3, SUITABILITY LEVEL' <br />PI°C <br />ConductMty (unrr*tca ,Acre i) <br />Saturation percentage (°/a) <br />Sodium adsorption ratio3 <br />Catciuan carbonate percentage <br />Selenium (PPM) <br />Particle size` <br />Coarse fragments (%) <br /><6.1->7.8 <br />4,02 <br />>80% <br />-*50/n . <br />'>4 <br />>15% <br />'2 ppm <br />All soil textures except; <br />s. 1s, sc, sic,. c <br />15%06 <br />` The threshold levels are to be used as a guide in evaluating the suitability of a suit material for <br />reclamation. An evaluation should take into account the "total systerW, Iruteractive parameters ray <br />either nullify or verify the significance of a potential problem <br />2 "rbe actual maximum acceptable salt level will depend on the plant spetses proposed in the <br />revegetation plan and the potential for upward salt movement <br />' Specific level depends upon clay mineralogy, sail texture, and saturation percentage according to <br />laoilhopf et al.. 1983. <br />s The specific percentage of clay or sand allowed will depend upon tray mineralogy. organic rnatta <br />content, c'7nsistence. SOV tiff, spoil characteristics, and size of sand fraction, <br />s T7?ese valuos troy vary depending upon the plant species proposed for n5avegetration in sped ific <br />locations (e.9- a soil with a high arse fragment. content throughout its profile rnay. be conaiatete,y <br />salvaged if used for rangeland versus cropland postmine land use), <br />r <br />2.04.9-9 <br />(Revised June 2008) Attachment 2.04.9-7-3