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EXHIBIT 26 <br />• SOIL PROFILE DESCRIPTIONS <br />Aaberg Series (X21) <br />The Aaberg series is a member of the fine, montmorillonitic family <br />of Borollic Vertic Camborthids. <br />Typifying Pedon: Aaberg clay <br />(Colors are for dry soil unless otherwise noted.) <br />Al 0- 4"---Grayish brown (2.SY 5/2) clay, very dark grayish brown <br />(2.SY 3/2) moist; strong fine granular structure; soft, <br />friable, sticky, plastic; many fine and medium roots; <br />mildly alkaline; clear smooth boundary. <br />82 4-23"---Light olive brown (2.SY 5/3) clay, olive brown (2.SY <br />• 4/3) moist; weak medium prismatic structure parting to <br />moderate medium angular blocky; extremely hard, friable, <br />sticky, plastic; few fine roots; a few thin glossy patches <br />on peds; few slickensides; cracks 1 centimeter to 2 <br />centimeters wide when dry; mildly alkaline; gradual wavy <br />boundary. <br />B3 23-30"---Light olive brown (2.SY 5/3) clay, olive brown (2.SY <br />4/3) moist; weak coarse angular blocky structure; extre- <br />mely hard, friable, sticky, plastic; few slickensides; <br />cracks 1 centimeter to 2 centimeters wide when dry; cal- <br />careous; moderately alkaline; gradual wavy boundary. <br />Cr 30-60"---Slightly calcareous clay shale. <br />. The B horizon is clay or heavy clay loam. The B2 horizon ranges <br />rom neutral to moderately alkaline in reaction. <br />