PD BACKGROUND REPORT (PL-SMA-2024-000054)

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Proposed new Residence (4420 square feet Interior, 2942 square feet Accessory) has increased in size from the original proposal (3788 square feet Interior, 2593 square feet Accessory). Total increase in size is 632 square feet Interior, 349 square feet Accessory. Residence remains two stories, has changed from four to five bedrooms, remains three & half bath. Construction remains generally the same, built on concrete slab with concrete exterior walls at main floor, steel interior and second floor wall framing. The roof has been redesigned as a hip roof. Roof construction will be wood framing with metal roofing. Height remains at approximately 28 feet, and will not exceed a maximum of 35 feet. No change to location or shoreline setbacks. Residence will be located one hundred thirty(130) feet from the shoreline and will respect all other setbacks. A septic system for the residence will be installed. (See attached site plans & building plans.) Proposed five foot high rock wall to be built along street at or slightly inside property line. There is no change to the now permitted detached Garage and detached Bedroom. Total building area including accessory areas is remains 9,660 square feet. County water is available and will be utilized. Existing house and shed, built in 1936, will be demolished. Because the area to be developed is gently sloping and in Hamakua there will be a need for low retaining walls (4 feet max height) on both sides (uphill and ocean side) of the Residence and parking area, and the Ohana-Garage area. 20 loads of select borrow gravel and base course gravel are anticipated. Excavating and compacting activities are anticipated with approximately 50,000 square feet to be impacted by grading, excavating, fill and compacting activities for the total project including septic systems and driveways. Up to 4000 cu yards of material may be brought in. The Project is set back from the coastline by a minimum of 120 feet to the nearest development which will be the retaining wall makai of the Residence. This project will not affect beach processes, artificially fix the shoreline or interfere with public access and views to and along the shoreline. Site specific Best Management Practices ("BMPs")will be developed by the contractor in order to mitigate any potential for project-related impacts to the nearshore marine environment. BMPs will include the following provisions: • Excavation and grading activities will all be kept a minimum of 100 feet from the shoreline. • The entire project will take place outside the shoreline setback area. • All heavy equipment, machinery and trucks will be stored on site. • Drip pans will be stored under vehicles when not in use. In the event of a spill of leak of fuel, the flow of such fuel will be stopped and all sources of ignition will be removed. The spill will be contained by placement of a barrier around the area and contaminated earth will be placed in containers and properly disposed of off-site. • In case of ponding fuel, a hazardous materials vacuum truck will be used to collect the fuel. 2