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I ! ! I i I I I I I I I I I I i 170.0112D - 5- Permit Standards The following standards shall be met when any development is undertaken within the overlay district. a) No filling, grading, dredging, excavation or construction shall be allowed within any wetlands area; nor on lands abutting, adjoining or affecting said areas if such activity upon those adjacent areas is incompatible with City policies expressed here, in other documents and in the relevant storm water drainage study. Development is improper and therefore prohibited which may result in loss and damage to public and private improvements through inundation by flood waters and subsequent expensive construction of storm sewers and other public projects, in the permanent destruction of natural resourceg, loss of water retention facilities, open space and wildlife habitats and impairment of public and private water supplies. Minimum area requirements for building sites shall be d~termined in accordance with the City's Soils Ordinance Chapter 170.04. A minimum amount of filling may be allowed when necessary, but in no case shall the following restrictions on total amount of filling be exceeded. Since the total amount of filling which can be permitted is limited, the City, when considering permit applications, shall consider the equal apportionment of fill opportunity to riparian land owners. Total filling shall not cause the total natural flood storage capacity of the wetland to fall below the projected volume of runoff from the entire area wetland water shed generated by a ten year storm. ¢) Total filling shall not cause the total natural nutrient stripping capacity of the wetland to fall below the nutrient production of the wetland water shed for its projected development. Only fill, free of chemical pollutants and organic wastes~ may be used. Wetlands shall not be used for solid waste disposal. Development shall be conducted so that the maximum number of trees are preserved by the locating of structure in existing cleared areas and natural clearing and the utilization of other site design techniques. Grading, contouring and paving shall be performed to minimize any detrimental affect on root zone aeration and stability of existing trees. Existing trees shall be provided with a watering area equal to at least one-half the crown cover.