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1 <br />insufficient soil exists to resoil the pit bottom areas (and this <br />appears likely), the operator proposes that overburden material <br />t be used for a plant growth medium. This material would have a <br />' minimum depth of two feet over any clay beds remaining on the pit <br />bottom; three to four feet is more desirable. It is apparent <br />' that some growth can be achieved as evidenced by old piles on the <br />currently mined areas. It is our understanding that the <br />' overburden is a clay loam to sandy clay loam in texture. The <br />' operator proposes a series of soil tests be performed to <br />determine if there are any adverse characteristics present in the <br />' materials and to compare these materials with the topsoil. In <br />this way a determination can be made as to what type of <br />' overburden material is most favorable and if special treatments <br />' need to be applied to correct any especially adverse <br />characteristics. With this information, a more precise plan for <br />' placement of growth media can be designed. This need is also <br />reflected in the diverse growth patterns of the plant species <br />' which invade the various types of soil and overburden piles. (See <br />' Exhibit J, Vegetation, for more information on this aspect.) <br />1 <br />1 <br /> <br /> <br /> <br />35 <br />