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<br />W <br />eN <br />W <br />f,i-; <br /> <br />APPENDIX A <br /> <br />This Appendix includes resource management planning and salinity matrices for each of the seven <br />basin States. Each matrix identifies existing plans by resource area, when the plans will be updated, <br />the existence of saline soils by salinity class on public lands, other sources of salinity, whether or not <br />salinity is currently identified and evaluated in the existing plan, and name of any completed activity <br />plan that includes salinity control as an objective. <br /> <br />Soil salinity is indexed by electrical conductivity and the mapping units are defined as <br />follows: <br /> <br />Soil Salinity E . I r"nrlllrlivitv_(umhos/cm)~ <br />Class Upper Soil Layer Lower Soil Layer <br />Nonsaline 0-4,000 0-4,000 <br />Slightly 4,000-8,000 4,000 - 8,000 <br /> above 8 in. below 8 in. <br />Moderately 8,000 - 16,000 >16,000 <br /> above 20 in. below 20 in. <br />Strongly >16,000 > 16,000 <br /> <br />1 Electrical conductivity is measured in micromhos per centimeter of <br />saturation extract at 2SOC. <br /> <br />23 <br />