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Item 3 - Retopsoil and Vegetate Slope <br />Once the slope is regraded to a slope of 2.OH:1.OV, topsoil from the excavation of the lake <br />will be replaced on the graded slope to a depth of 14 inches uphill from the riprap at the toe. <br />This soil will be immediately seeded and revegetated as described below. <br />To facilitate stabilization along the embankment and growth of a functional plant community <br />two types of revegetation are proposed, planting live trees and willow stakes, and seeding of <br />desirable native herbaceous species along the embankment. <br />Planting along the embankment will include planting narrowleaf cottonwood seedlings or <br />saplings at the top of the embankment slope, above most flood levels. As mortality of large <br />planted stock is high, planted cottonwoods will be two inch caliper or less. The trees will be <br />planted in natural groupings with sufficient numbers and spacing to eliminate the need for <br />pruning or later management. Approximately 25 total seedlings will be planted. To reduce <br />riverbank erosion, coyote willow stakes will be planted along the riprap base of the embank- <br />ment. Coyote willows grow well from stem stakes cut prior to summer leaf-out; therefore <br />willow stakes of 24-36 inch length will be planted between April and June after jetty con- <br />struction. Sufficient numbers of willow stakes will be planted to average an on-center dis- <br />tance between willow stakes of six feet. <br />Along the upper reaches of the embankment, a herbaceous seed mix is proposed to be seeded <br />to promote wildlife habitat and erosion control. The following seed mix is proposed to be <br />broadcast seeded and subsequently raked into the surface and mulched as necessary to pre- <br />vent seed loss. <br />Thomas Pit 2/02 19 <br />