Laserfiche WebLink
Tahle 9-6-2 <br />Criteria for Evaluating Soil Suitability <br />Parameter-Unitsl <br />pH <br />3 <br />Conductivity (mmhos/cm) <br />Saturation percentage (t) <br />4 <br />Sodium adsorption ratio <br />Calcium carbonate percentage <br />Particle sizes <br />Coarse fragments (4) <br />2 <br />Suitability Level <br />5.0-8.5 <br />0.0-12.0 <br />25-80 <br />0-10 <br />0-15 <br />All soil textures except: <br />s, ls, sic, c, and sc <br />(greater than 40Wc) <br />0-35@ <br />1 Secondary suitability criteria including depth to bedrock, depth to ground water, <br />consistence, organic matter content, and slope steepness were also utilized to determine <br />topsoil salvage depths. <br />2 The threshold levels are to be used as a guide in evaluati nq the suitability of a soil <br />material for reclamation. An evaluation should take into account the "total system". <br />Interactive parameters may either nullify or verify the significance of a potential <br />problem. <br />3 The actual maximum acceptable salt level will depend on the plant species proposed in <br />the revegetation plan and the potential for upward salt movement. <br />4 Specific level depends upon clay mineralogy, soil texture, and saturation percentage <br />according to Dollhopf, 1983. <br />5 The specific percentage of clay or sand allowed will depend upon clay mineralogy, <br />organic matter content, consistence, spoil characteristics, and size of sand fraction. <br />9-6-15 Revised 05/16/88 <br /> <br />• <br />• <br />