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Table 17-7 lnterburden (Units 2, 3, 4) Characteristics - Nucta East Area. <br /> WEST CENTRAL EAST <br /> #872E _#881E #870E #882E #886E #871E <br /> Thickness 17.2' 20.5' 14.3' 16' 15.3' 13.8' <br /> Unit 2 8.4' 12.3' 4.2' 2.8' 3.1' 7.1' <br /> Unit 3 6.9' 5.7' 7.9' 9.9' 9.0' 3.4' <br /> Unit 4 1.9' 2.5' 2.2' 3.3' 3.2' 3.3' <br /> -� % Sandstone 45% 45% 75% 65% 60% 45% <br /> v <br /> i <br /> rn % Shale/Coal 55% 55% 25% 35% 40% 55% <br /> low pH/thickness 4.4/1.91(4) 7.6/8.11(2) 6.2/2.21(4) 7.9/3.31(4) 4.2/3.21(4) 3.5/2.1-(2) <br /> high pH/thickness 8.3/3.51(2) 7.9/8.71(2+3) 8.0/5.61(3) 8.9/2.81(2) 6.0/9.01(3) 6.7/3.41(3) <br /> ASP -40.2 to 17.4 -107 to 20.2 -24.5 to 10.1 -37.8 to 14.9 -52.5 to .03 -51.4 to 38.7 <br /> (4) (3) (2) (3) (2) (3) (2) (3) (4) (2) (2) (3) <br /> % pyr .13 to 1.29 .15 to 3.78 .46 to 1.28 .03 to 1.38 .01 to 1.49 .63 to 1.09 <br /> m (2) (4) (2) (2) (2) (2) (3) (4) (2) (4) (4) (2) <br /> CD <br /> C <br /> a <br /> Note: (2) denotes unit within the interburden <br /> 0 <br /> 00 <br />