Laserfiche WebLink
_4_ <br />2. "Smooth and grade the ground surface to drain towards the toe ' <br />'. drain. The existing ponds should be removed as part of the <br />• initial construction. " <br />• ~ ."3. Construct the toe drainage system. <br />~..;,4. After the toe drain is in place, we recommend dozing the exist- <br />". - ing pile across the area along the north and west perimeter to , <br />+ develop a relatively level surface with a maximum thickness of <br />~. ~ ~ spoil of 2 feet. +This area should be tested to determine the <br />` compaction is achieved initially.- - ~ i <br />~. <br />' ~ .5. As spoil is developed, the haul trucks should be routed. over <br />., the pile with a dumping sequence from north to south. The .. <br />• piles should be leveled and compacted on a 3 "to 6 month inter- <br />~' val depending on the area being worked. When the piles of s"' <br />.'loose material are leveled and compacted, we recommend obtain- <br />ing compaction tests in order to have the data necessary far.- <br />required periodic certification of the fill. <br />• 6. The fill should be compacted to at least 90 percent of the <br />. maximum density determined using AASHTO T-99. We believe this <br />can be accomplished by using either a loaded clump truck or <br />vibratory compaction equipment. <br />7. Steps 5 and 6 should be continued until the top of the pile <br />• .. reaches elevation 6330. <br />• '~8. Before raising the bank elevation above elevation 6330, the <br />- surface diversion ditches should be constructed as indicated on <br />the construction plans. <br />9. Steps 5 and 6 can be continued until the design height of the <br />• pile is achieved. <br />At all times during construction of the pile, the top of the pile should <br />• be sloped at grades less than 1 vertical to 20 horizontal. All low <br />_ spots in the top of the pile which could trap surface water should be <br />• '~ eliminated. <br />. , <br />• ~.... <br />~.. ". <br />,~. , <br />Y <br />