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APPENDIX 9-5-5 (Cont.) <br /> Evaluation of Topsoil Suitability <br /> Soil Series, Horizon <br /> Map Unit (MU) and Rec. TSD <br /> and Sample Depth 1 2 3 4 5 6 7 Limitino (ave. for 9all <br /> Number (SN) Inches pH EC Sat.% Texture SAR CaCO3 Coarse Frag.% Suitability Factors pedons) <br /> Barx, scalped MU:070B, SN:72 <br /> Apk 0-8 L1 L1 L1 L1 L1 L2 L1 L2 CaCO3 15.1% Lift 1 = 3" <br /> Bk1 8-22 L1 L1 L1 L1 L1 L2 L1 L2 CaCO3 16.7% Lift 2 = 39" <br /> Bk2 22-32 L1 L1 L1 L1 L1 L1 L1 L1 pH 7.8, EC 3.4 <br /> C1 32-40 L1 L1 L1 L1 L1 L1 L1 L1 EC 3.5, SP 28.2% <br /> C2 40-51 L1 L1 L1 L1 L1 L1 L1 L1 pH 7.8 <br /> C3 51-59 L1 L1 L1 L1 L1 L1 L1 L1 SP 27.5% <br /> C4 59-72 L1 L1 L1 L1 L1 L1 L1 L1 -- <br /> i <br /> �n <br /> o Average profile depth of suitable topsoil is about 42 inches (N=2). The Ap horizon is suitable Lift 1 material when the calcium carbonate equivalent <br /> is less than 15%. The average depth of suitable Ap horizon topsoil equals three inches (N=2). The remainder of the soil profile generally meets <br /> criteria for L2 (42 - 3 = 39 inches). Moderate salinity levels in the subsoil and low saturation percentages in the substratum are also limiting <br /> factors for this soil. <br /> CD <br /> Ch <br /> cn <br /> Ca. <br /> 0 <br /> r <br /> C <br /> CO <br />