COM 0555.012 2010-2012 - Laserfiche WebLink

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c^, eJ Proposed The owner inten s to rezone the property to allow multi-fawily dwellings on the lot for student housing for college students attending the University of Hawaii Hilo. This is in conforrnancc with the County of Hawaii General PLan. A copy of the Conceptual Plan is attached 10 this report (attachment 2). Conceptually, the developrncnt would comprise ofa few multi-family dwelling structures with sidewalks and landscaping, a parking area, and the necessary infrastructure. This report focuses uu civil engineering iaouuodzu1ruaYwrimefionmdcve\opiugthc site. Drainage In the existing condition. the site collects very little storm water. There is a drainage system on Kinoole Street that captures the storm runoff from the mauka direction before it reaches the site. There is a small amount ofwater that enters the lot from the south side and inostly crosses over the back corner of the lot. The m 'ob|ymftbeo1nmoz000t[isgcocra<cd from rain that falis directly onto the property. Because ofthe porosity of the ground, there would be almost no runoff from the site onto adjacent sites in the existing state. However, once development is completed, many parts of the property will be impervious and runoff to adjacent properties will need to be contained. Development standards in the County of Hawaii require that any additio runoff caused by development be contained onsite. Typically, this is accornplished vvdhdryvvollo that capture the storm water onsite and alJow it to percolate into the ground. Because the site has naturaily excellent percolation, the typical method of placing dry`vcDonowke/mo viable solution. My prelirninary calculations indicated that three or four drywells will be necessary.