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TABLE 4.0 <br />Sandstone Useable as Ditch Riprap from Access Road Excavation <br />Sieve Size (inch) Percent Passing (%) <br />24 100 <br />18 80-100 <br />12 40-60 <br />9 20-40 <br />6 10-25 <br />3 0-15 <br />The perimeter collection channels aze to be extended as the pile grows laterally <br />and will follow existing ground surface northerly grade which ranges from 5 <br />to 15 percent. <br />15 <br />