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_ III III I II I II IIII III _; DBE Xte3~' ~~ ~ <br />8100 <br />8000 <br />7900 <br />7800 ' <br />7700 ' <br />7600 <br />7500 <br />7400 <br />2:1 PROPOSED CONFIGURATION <br />2.2:1 PROPOSED CONFIGURATION <br />2.5:1 PROPOSED CONFIGURATION ~ <br /> BENCH 6 _` <br /> <br />v EL-7735 <br /> BENCH 5 ~ <br />Z EL-7685 j <br />~ BENCH 4 <br /> <br />Q _ <br />EL-7635 <br /> BENCH 3 _ <br />J EL=7566 <br />W BENCH 2 COAL REFU SE <br /> EL=7532 <br /> BENCH 1 _ <br /> EL=7486 / <br /> <br />POND ~ ooc <br />EL-8035 - <br />BENCH 11_ <br />EL-7985 <br />BENCH 10 <br />EL=7935 <br />BENCH 9 <br />EL=7885 --~' ~ - - - - - <br />BENCH B ~ / / / <br />EL=7875 / <br />7 J / / / <br />5 / ~ / / COAL REFUSE <br />i-EXISTING RDA SURFAC~ <br />BEDROCK <br />7GG 5 ~`~ <br />~~~1, ~-~~.2 <br />~ a~vf~y 30 <br />CONFIGURATION AND LAYERS USED IN STABILITY MODELS <br />sloo <br />8000 <br />7900 <br />7800 <br />7700 ,. <br />z <br />0 <br />7600 <br />J <br />W <br />7500 <br />7400 <br />BENCH 2 <br />EL=7532 <br />BENCH 1 _ <br />EL=7466 <br />POND ~ ooe <br />/ Q UNIFORMLY INCREASING TO 1 /2 OF RDA HEIGHT <br />® UNIFORMLY INCREASING TO 1/4 OF RDA HEIGHT <br />~3 50' THICK SATURATED ZONE Ai OVE BENCH 3. <br />CTL~THOMPSON, INC. <br />CON ULTINC ENGINEERS <br />~ 02 20' OF WATER AT BASE OF RDA ~ ~rK/wnmvs L ~ <br />1~ 10' OF WATER AT BASE OF RDA ~ ~~~~ ~~ 1rH ~~°~ ~~ <br />TYPICAL CROSS SECTIONS <br />FOR STABILITY MODELS <br />WATER CONDITIONS USED IN STABILITY MODELS <br />EL=8035 - <br />EL-BD00 <br />- ~ /FINAL TOP ELEVATION <br />~~ INITAL TOP ELEVATION <br />10' THICK SOIL ZONE <br />5~~ ~~X~lBrT3~ <br />r6~~~ ~ <br />RECEIVED <br />SEP Q 3 1997 <br />EL=8000 <br />Division o1 Minerals 8 Geology <br />EL=7665 •~ ? - <br />BENCH 11_ <br />EL=7985 <br />BENCH 10- <br />EL=7935 <br />BENCH 9 <br />JOB N0. 22,478 FIG. 6 <br />