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gutters, sidewalks and standard drainage facilities, and relief from requirements on roadway pavement thickness. These include the installation of 6-inch base course of four inches of compacted crusher run base with filler and two inches of asphalt concrete without the installation of a 6-inch sub -base material. (See Figure 6. Roadway Sections of the PUD application). o Justirication: The proposed road section with 2-inches of asphalt, which was the county standard until recently, will substantially reduce costs as compared with 3- inches of asphalt. Eliminating the crushed rock sub -base should also reduce costs while allowing the road section to perform satisfactorily according to a Geotechnical Study conducted for the project by Kokua Geotech LLC in June 2024 submitted with the application. Requirements for sidewalks (HCC §23-89). Request relief from the requirements for sidewalks for project roadway, Instead, the applicant proposes to the installation of paved swales and shoulder equal to the right-of-way width to provide pedestrian access. (See highlighted sections of Figure 6. Roadway Sections and Figure 6a. R- 18 Standard Details of the PUD) o Justification: Utilizing the id -foot -wide swales plus the 5-foot-wide shoulders as pedestrian paths will reduce costs as compared to providing curbs, gutters and sidewalks. Also, if a curb, gutter and sidewalk section is used, seepage pits would not be possible given the county standard detail for intake structures above the drywells where curbs and gutters are present. This would necessitate use of deep drywells which would conflict with the State Department of Health (DOH) prohibition of injection wells within one -quarter mile of a water well. Curbs and Gutters (HCC §23-91). Request to have the Planning Director determine that the construction of curbs and gutters are not necessary for roadways within the project area. o Justification: Instead of curbs and gutters, the applicant proposes to provide paved swales and shoulders consistent with details depicted in Figure 6. Roadway Sections and Figure 6a. R- IS Standard Details of the PUD application. Paved swales and shoulders would result in substantially less cost for the eventual buyer of the lots as compared to curbs, gutters and sidewalks and would provide the same level of drainage capacity. Drainage, Flood, and Erosion Mitigation Measures (HCC §23-92). Request to allow the use of seepage pits in lieu of drywells for stormwater disposal. Under this request, drainage would be handled by swales that feed into seepage pits throughout the project area rather than standard drywells. (See Figure 7. Seepage Pit Details of the PUD application) o Justification: Due to the proposed 43-lot subdivision's proximity to proposed water wells slated for development by a third party, standard drywells would not be permitted by State Department of Health (DOH) Underground Injection Control (UIC) requirements which state, "Any new it�ection well, other than subclass D iiecfion vtWls, shall be sited beyond an area which extends at least one -quarter mile from any part of a drinking water source. " Should drywells be initially installed then followed by the development of the water wells, the drywells would have to be modified and additional seepage pits installed. This process would be expensive and reduce the overall affordability of the proposed project; thus, it would be prudent to proactively plan for the impact of the water well development now by installing the -2-