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APPENDIX 9-5-5 (Cont.) <br /> Evaluation of Topsoil Suitability <br /> Soil Series, Horizon <br /> Map Unit (MU) and Rec. TO <br /> and Sample Depth 1 2 3 4 5 6 7 Limiting (ave. forgall <br /> Number (SN) Inches pH EC Sat.% Texture SAR CaCO3 Coarse Frag.% Suitability Factors pedons) <br /> Barx, buried MU:D70B, SN:54 <br /> Ap 0-13 Ll Ll Ll Ll Ll L1 Ll L1 -- Lift 1 = 7" <br /> Bw 13-20 L2 L2 Ll Ll L1 L1 Ll L2 pH 7.9, Lift 2 = 50" <br /> EC 6.6 <br /> Bkb 20-30 Ll L2 L1 Ll L1 L2 Ll L2 pH 7.8, EC 5.8, <br /> CaCO3 20.7% <br /> Clb 30-39 Ll L1 L1 Ll Ll L1 Ll L1 pH 7.8 <br /> C2b 39-57 Ll Ll Ll L1 L1 L1 L1 Ll pH 7.8, SP 27.1% <br /> Barx, buried MU:070B, SN:57 <br /> w Apk 0-4 Ll L1 Ll L1 L1 L2 L1 L2 CaCO3 15.9% <br /> Btk 4-9 Ll Ll Ll L1 Ll L2 Ll L2 CaCO3 16.7% <br /> Bk 9-18 Ll L1 Ll L1 Ll L2 L1 L2 CaCO3 16.1% <br /> Bwb 18-40 Ll Ll L1 Ll Ll L1 L1 L1 <br /> Btb 40-50 Ll L1 Ll L1 Ll L1 Ll L1 <br /> Btkb 50-63 Ll L1 Ll L1 Ll Ll Ll Ll <br /> C <br /> Cb 63-72 Ll L1 L1 Ll Ll L1 L1 L1 -- <br /> CD <br /> CD Average profile depth of suitable topsoil equals 57 inches (N=3). The Ap horizon is suitable Lift 1 material when the calcium carbonate equivalent is <br /> a. less than 15%. The average depth of suitable Ap horizon topsoil equals seven inches (N=3). The remainder of the soil profile generally meets <br /> criteria for Lift 2 (57- 7 = 50 inches). Moderate salinity levels in the subsoil and low saturation percentages in the substratum are also limiting <br /> factors for this soil. <br /> CO <br /> CO <br />