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��� <br /> D�x ` <br /> Q H <br /> H� � � <br /> Ky � � <br /> '�tl�'� - <br /> NH <br /> Hx C' <br /> td � � ; <br /> OM ���j g 6. Grading. <br /> c�� c� � <br /> � H � Because of. the excavation for the buildinq pac�s, the <br /> gH <br /> M ,,� northern boundary of the wetland will have been pre-graded <br /> y H I prior to the initiation of grading of the wetland <br /> ���' mitigation/enhancement area. <br /> � '�� Prior to excavation, selected trees which will be <br /> identified and flagged by the wetlands construction supervisor <br /> � and the wetlands biologist to identify those trees that will <br /> be removed and stock-piled into a pre-developed nursery area. <br /> � Once this is completed, the remainder of the area, with the <br /> � exception uf the existing wetlands , will be graded to the <br /> � proposed elevations (SD 7) . The site will be sloped fr�m the <br /> � outer perimeter down to the edge of the 25 foot shrub/tree <br /> buffer area that is proposed to surround all of the site. The <br /> ; grass lined swales will be incorporated into this 25 foot wide <br /> Iarea. That portion of the existing wetland east of building <br /> IB impacted by construction, but not permanently covered, will <br /> '�1 � be restored with wetland vegetation typical of the undisturbed <br /> ' ' portion of the wetland. The slope from the upland to the edge <br /> � i of the wetland, i.e. the 25 foot buffer area, will vary from <br /> '�' , being flat to being lowered 4 feet over a horizonr.al distance <br /> ' ' � of 25 feet. From the boundary of this shrub azea, the wetland <br /> � i will be excavated to the identified depths. <br /> ' 1 The elevation 565 through 563 elevation areae in the <br /> ��� north central portion of the wetland will be graded to the <br /> � grade identified in the initial grading plan. The 561 and 562 <br /> �' areas will be over-qraded by. 6 inches to elevation 560.5 and <br /> �� SGl.S to allow room for replacement soil from the northwest <br /> �' wetland. . The areas surrounding and adjacent to the existing <br /> wetlands will be graded up to the edge of the flagged wetland. <br /> � This may require some hand-clearing in an effort to maximize <br /> � the wetland design features of the mitigation plan without <br /> �' disturbing the existing remaining wetlands. <br /> 1� The elev�tion 564 and 565 areas will be created to <br /> maximize the conditions necessary for the survival of an <br /> alder/ cottonwood tree community within the confines oE the <br /> wetter portions of the mitigation area . <br /> 3 <br />