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Eiistsst~ FoatLlll Slope <br />~~ <br />~~ <br />Bench l„~~'~/'_____ ! <br />Bench..,-' Jam,~/ ___ ~S"HT j <br />~..______________________ ~~~ffff <br />~- nTine #!J .... <br />Betxh3 ~~~ Dmrnwud_-- .. <br />Bextch J <br />Bench 1~7ii,Tw~ Section <br />As part of the Agreement with Jefferson County Open Space that governed the land exchange <br />associated with the southern portion of the PUD area, Lafarge has agreed to a continue the <br />specialized type of open-pit mining that has been termed "mining from behind" and has been in <br />use for a number of years. The new "mining from behind" technique has our operation making a <br />35-foot deep cut at the base of the previous bench and then mining outward. As we move <br />outward, the undisturbed edge of the bench remains intact until the bench is completely mined. <br />This undisturbed bench berm is an important visual barrier and hides our operation from view. <br />The following section depicts how the mining moves outward and is screened from view. <br />Specification Aggregates <br />DMG I l2 Permit Amendment <br />-6- <br />