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EXHIBIT D (Cont'd) <br />parts of the north side of the affected land. The average <br />thickness is expected to be about 18 feet. <br />Test holes also encountered overburden that varies in <br />thickness from 0.5 feet to 22 feet. This overburden over- <br />lays the alluvial sand and gravel. The area in the southwest <br />portion of the property, which contains overburden estimated <br />to be in excess of eight feet, was eliminated from the <br />affected land. There is simply too much overburden to be <br />moved in order to reach too little sand and gravel. <br />Beneath the sand and gravel the Wasatch-Ohio Creek <br />Formations are the bedrock and will provide a firm, fairly <br />even and smooth floor to the pit. <br />Soils and Overburden. There are four types of natural <br />soil on or adjacent to the site. These soils vary in depth <br />from zero to 18 inches. Of the 170.061 acres of affected land, <br />approximately 143.611 acres will become water area and 0.391 <br />acres will be roads. Thus, 26.061 acres will require revegeta- <br />tion. Sufficient quantities of salvageable soil will be avail- <br />able to resoil this 26.061 acres to a depth of 8 to 12 inches <br />(see Exhibit I for more details concerning soils). A large <br />part of the soils on the property are so poor that they must <br />be segregated and spoiled with other waste materials so that <br />the good soils are not contaminated. <br />Estimates of insitu soils are based on the McArdle system. <br />High quality soils are estimated to be 230,707 yards. A <br />-1- <br />