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Table Imo: Criteria to establish overburden suitability <br />Pazameter <br />pH <br />EC (Conductivity) <br />nunhos/cm <br />Saturation <br />Percentage <br />Texture <br />SAR 2/ <br />Selenium <br />Boron <br />Nitrate/Nitrogen <br />molybdenum <br />Acid base pot. 4/ <br />Arsenic <br />Surface <br />(potential root zonel Aquifer Restoration <br />Suitable MarQinall/ Unsuitable Unsuitable <br />5.5-8.5 <br />0-8 <br />25-80 <br />0-10 <br /><0. I ppm <br /><5.0 <br /><1.0 ppm <br />>-5 CaCO3 <br />equivalenb'1000 <br />tons <br /><2.0 ppm <br />5.0-5.5 <br />8-12 <br /><25 <br />>80 <br />csics <br />10-12 3/ <br />10-15 <br />>0.1 ppm <br />>1.0 ppm <br />>2.0 ppm <br /><5.0 <5.0 <br />> 12 Depends on premining water <br />quality and overburden quality <br />> 12 3/ Depends on premining water <br />>15 quality and overburden quality <br />Depends on premining water <br />quality and overburden quality <br />>5.0 ppm Depends on premining water <br />quality and overburden quality <br />>50 ppm <br /><-5 tons CaCO3 <-5 tons CaCO3 equivalent/]000 <br />equivatent/1000 tons tons <br />Depends on premining water <br />quality and overburden quality <br />Organic Carbon <10% >10% <br />1 / Evaluated on an individual basis for suitability. <br />2/ As an alternative to SAR calculations, ESP (exchangeable sodium percentage) can be determined. ESP should be <br />detemvned if suitable SAR value is exceeded. <br />3/ For fine textured soils (Clay 40%). <br />4/ Record as Acid pot., Neutralization pot. and acid-base potential in ± tons CaCO3 equivalent/1000 tons. <br /> <br />Unknown/11-84 22 <br />Rules Update/8-94 <br />