PD Recommendation Report (PL-SMA-2023-000029)

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views of the sea from these highways currently exist. The requested A-5a zoning will allow for a 4-lot subdivision with lots atleast 5 acres in size with a mazimum building height of thirty-five feet for residential structures and forty-five feet for all other structures. Due to the topography of the land between the highways and property (at least 100 feet elevation difference) if a 45-foot-tall building were to be constructed it would not impede the views from these highways to the sea. Given the low density of potential building sites and the significant ironwood canopy that exists along the top of the sea cliff, the proposed development is not anticipated to significantly impact coastal/ocean views from Hawaii Belt Road or Old Mamalahoa Highway. Coastal Ecosystems and Marine Resources: Marine waters located off of the Hamakua coastline in this area are classified as Class A. The objective of Class A designation is to ensure these waters remain in their natural pristine state as nearly as possible with an absolute minimum of pollution or alteration of water quality from any human-caused source or actions. Short-term impacts on the marine environment from construction projects in this area could potentially result from airborne dust and increased silt that collects in stormwater runoff directed towards the ocean. The use of drywells to address on-site drainage, not directing stormwater towards the ocean, and compliance with Chapter 27, Flood Control, Hawaii County Code, will mitigate the potential impacts of increase stormwater inputs to the nearshore/ocean area. All mandated setbacks and government regulations related to runoff and nearshore water will be adhered to. No threatened or endangered animal or plant species are present and as such no adverse impact to flora, fauna, or ecosystems would be expected to result from the proposed development or any activities associated with the use. Beach Protection: There are no beaches located on the subject property. Coastal Hazards: The subject property is designated as Zone X on the Flood Insurance Rate Maps (FIRM). All development will occur within Flood Zone X, an area determined by FEMA to be outside the 500-year flood plain. According to the University of Hawaii Sea Level Rise exposure area mapping program SLR-Xa, the exposure area for 3.2 feet of sea level rise or 3.2 feet of passive flooding is located below the cliffs on the subject property. The entire parcel is located within the Tsunami Evacuation Zone. There is a Civil Defense siren located on a parcel located southwest from the proposed 5