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Therefore, the species diversity standard for Trapper Mine reclaimed rangeland areas is as follows: <br /> 1) At least four species of cool season perennial grasses shall contribute no less than 3.0% relative <br /> cover. <br /> 2) A minimum of 5.0% relative cover for the forb life form shall be established. <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 /> 4-121 a <br /> Revision: TR-126 <br /> Approved: <br />