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' - - - . _ <br />,yqggg • pederai Register / VoL 54. No. 209 <br />IO' )'as. <br />y, October 31. 1989 / Rulea and Regi$ettom <br />~1 <br />1 <br />: <br />' Simple Slope 2, AII benthed ucavatlod m[ee! oe le Ia depth thall have t maximua alloweble slope o( 1:1 and maudmm bench dimemiona u <br />[ollows: . - . • <br />i <br />'rn'e bench alloved in coheaive-eoil only. <br />ZO' ;Sax <br />~ <br />! <br />1 <br />i <br />i <br />7 <br />I <br />i <br />Si <br />L <br />w <br />1 <br />I % <br />. i <br />Sisali3e Bana <br />~ Thi bench +l1•-ved ia coheyive soil only <br />i <br />i ~ <br />i <br />i <br />Af <br />:0' :tax. <br />i ~ <br />. ~ <br />X_ / 1 <br />I , <br />I S' qax. ~ <br />i <br />MultIple Baaeh <br />3, All exravaCons 7o [eet ar kas (n de0th whlrS hsre 'roNcslly sided lowet porttoos thall be Welded a supporEed tu a hatghl at leest 36 <br />Ieches abm tha Wp of ma rertiul i(da. AIl meh ezuratlom shan haw a mudmem alla.n61e doPe o! 11 <br />