PD Background Report (PL-SLU-2022-008 & PL-REZ-2022-039)

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"X", which covers approximately 5% of the subject parcel, is an area determined to be outside the 500-year floodplain. Zone "XS", which covers approximately 5% of the subject parcel, is an area of moderate flood hazard corresponding to areas of the 500-year floodplain, areas of one-hundred-year flooding where average depths are less than one foot, areas of one-hundred-year flooding where the contributing drainage area is less than one square mile, and areas protected from the one-hundred-year flood by levees. Zone "AO", which covers approximately 60% of the subject parcel, is the Special Flood Hazard Area that corresponds to the areas of one-hundred-year shallow flooding (usually sheet flow on sloping terrain)where average depths are between one and three feet. Average whole-foot depths derived from the detailed hydraulic analyses have been determined within this zone. Zone "AE", which covers approximately 25% of the subject parcel, is the Special Flood Hazard Area that corresponds to the 100-year floodplains that are determined in the Flood Insurance Study by detailed methods. Base Flood Elevations (computed flood elevation from mean sea level) derived from the detailed hydraulic analyses have been determined at selected intervals within this zone. Zone "AEF", which covers approximately 5% of the subject parcel, is the floodway areas in Zone "AE". The floodway is the channel of stream plus any adjacent floodplain areas that must be kept free of encroachment so that the 100-year floodplains can be carried without increasing the Base Flood Elevation. DPW further notes that all construction within Zones "AO", "AE", and"AEF" shall comply with Chapter 27, Floodplain Management, of the Hawaii County Code. 20. Flora/Fauna Resources: There were no professional surveys conducted of the floral or faunal resources of the subject property, however, according to the applicants, dominant plants on the property are Kikuya grass and eucalyptus trees, with rows of eucalyptus trees along the eastern boundary of the site and along the site's boundary with the highway. The applicant reports that the site is mainly vacant of fauna except for introduced species including the mongoose and feral cats. According to the State Department of Land and Natural Resources, Division of Forestry and Wildlife (DOFAW) there are several state-listed species that could occur at or in the vicinity of the subject property including the Hawaiian Hawk, Blackburn's Sphinx Moth, Hawaiian Goose -6-