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Recommendation for Kittitas Valley Event Center <br />Bloom Arena- 120 X 220 (26,400 ft. 2) <br />I would recommend that current dirt be removed to a depth of 10 inches <br />all the way to the walls. If possible it would be better to remove enough so <br />that the entire level can be lowered 4 to 5 inches if the man hole in arena <br />can be moved. We can get by with 10 inches of new material, but I would <br />prefer 12 inches. It is so important that the floor of the arena is level to a <br />+/- Y2 inch. <br />Before installing new footing the arena should be watered to 12% moisture <br />then allowed to set for 12 hours before putting in new footing. <br />New footing should be installed in two 5 or 6 inch lifts, compacting the first <br />lift to 100% and the second to 80%. <br />Final grade should be level two within +/- 2/2 inch. <br />Material to be used is a mixture of clay topsoil from CLH Topsoil and sand <br />from the Dean Callahan pit which is 69 miles east of Ellensburg. The ratio is <br />60% topsoil and 40% sand. The way I would recommend mixing these two <br />products would be to haul the sand to Brent at CLH and have him bucket <br />mix the material, then run it through the screening plant. I will be glad to <br />help Brent from CLH figure out how to make sand and clay. <br />