COM 0077.000 2024-2026 - Laserfiche WebLink

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required drainage using seepage pits rather than drywells. The applicant proposes to develop a 43-lot, 100% affordable, single-family residential subdivision, with a minimum of 10,000 square foot lots on 14.321 acres of land. The proposed project will occur on two, non-contiguous areas as follows: I ) a 13.005-acre section that will support 39 lots (hereinafter 'Project Lot V); and 2) a I .316-acre section that will support 4 lots (hereinafter 'Project Lot 2'). The requested PUD exceptions would allow project roadways within Project Lot I to be developed with paved shoulders, swales, and driving lanes equal to the width of the right-of-way of 50 feet and 66 feet respectively with no curbs, gutters and sidewalks provided. Please note, the original application included cross sections for proposed 40-, 50-, and 60-foot-wide roadway improvements, however, the applicant subsequently updated planned roadway design for the proposed 50- and 66-foot-wide roadways to meet DPW roadway requirements outlined in Sheet R- 18. Street Cross -sections without Sidewalk of the DPW standard details manual (See highlighted section of Figure 6a. R-18 Roadway Sections of the PUD application). Despite the preceding, the modified sub -pavement and pavement treatment will be the same for all roadways. For Project Lot 2, access would be provided by a 40-foot-wide right-of-way with each leg being no longer than 150 feet. This would be sufficient for a fire truck to reverse and exist the site if they are called on in the event of a fire. Drainage would be handled by swales that feed into seepage pits through the project area rather than standard drywells. It should be noted that standard drywells would not be permitted by State Department of Health UIC requirements should the planned water wells be developed. 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. Given that it would be prudent to plan for the impact of the well development now by handling the required drainage using seepage pits. Internal roadways and drainage systems will be built to non-dedicable standards, and the applicant proposes to dedicate these roadways and drainage systems to the County once constructed. Despite the preceding, DPW recommends that the applicant provide improvements to project street frontages, including but not limited to concrete sidewalks, drainage improvements, and any required utility relocation, meeting with the requirements of the Americans with Disabilities Act. Thus, while DPW supports some of the deviations from the subdivision code requested in the PUD application (grades and curves, alternative pavement design/thickness, and shallow drainage facilities), they do not support relief from minimum right-of-way and pavement widths and relief from the requirements of curbs, gutters, and sidewalks. If these exceptions are granted, DPW is not willing to accept dedication of the roadways as they would not meet dedicable roadway standards. The requested PUD, along with concurrent SLU District Boundary Amendment and change of zone request are necessary to facilitate the 43 -lot subdivision that will provide building sites for the HICDC self-help and turnkey housing program for low to moderate income households all of which will be in the County of Hawai'i's affordable housing guidelines. HICDC's intent is to provide as many self-help homes as possible given federal funding limitations. Turnkey homes would be suitable for households unable to provide the required self- help labor or due to their incomes being above 80% of the area median income which is the -3-