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Therefore, the species diversity standard for Trapper Mine reclaimed rangeland areas is as follows: <br />• <br />1) At least five principle species including a minimum of four cool season perennial grasses and a <br />minimum of one perennial forb shall be established. <br />2) Each principle species shall contribute no less than 3.0% relative cover. <br />3) No single species shall contribute in excess of 50% relative cover. <br />4) No four species in combination shall exceed 80% relative cover. <br />This approach will ensure a similar diversity of principle species in the reclaimed plant community as <br />existed in the pre- mining plant communities. It will also provide safeguards against establishment of <br />vegetation monocultures involving only a single or a few plant species. <br />I 1 <br />LJ <br />• <br />4 -121a <br />Revision: TV - - <br />Approved: 211a h2 <br />