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`~„cr w N+~ <br /> <br /> Harry Kim »v Christopher J• Yuen <br /> Mayor Director <br /> ~,,e Brad Kurokawa, ASLA <br /> LEED®AP <br /> lLL1 t.111•ty5 1Y1 ~~~~tt Depury Director <br /> PLIALNNINlIG DEPARTMENT <br /> 101 Pauahi Sveet, Suite 3 Hilo, Hawaii 96720-3043 c <br /> (808) 961-8288 FAX (808) 961-8742 <br /> S r_ <br /> r. <br /> N <br /> S <br /> January 22, 2007 <br /> iJ <br /> CJ <br /> Honorable Pete Hoffrnann, Chair <br /> And Members of the County Council <br /> HAWAII COUNTY COUNCIL <br /> County of Hawaii <br /> 333 Kilauea Avenue <br /> Hilo, HI 96720 <br /> Dear Chair Hoffmann and Members of the County Council: <br /> SUBJECT: AMENDMENTS TO CHAPTER 23 (SUBDIVISION, 25 (ZONING) <br /> AND 27 (FLOOD CONTROL) -HAWAII COUNTY CODE <br /> (2005 EDITION) <br /> These amendments to Chap. 23, 25, and 27 of the Hawaii County Code require that most <br /> new development have onsite drainage of rainwater into drywells or other methods that <br /> infiltrate stormwater into the ground. This follows the standard practice in Hawaii <br /> County for many yeazs, but this practice has never been enacted by ordinance or formal <br /> rule. These drainage requirements help control flooding and also reduce the potential for <br /> water pollution from surface runoff. <br /> The federal Coastal Zone Act Reauthorization Amendments of 1990, sec. 6217, <br /> ("CZARA") contain a requirement that local governments enact management measures to <br /> reduce the potential pollution of natural bodies of water (such as the ocean, rivers, <br /> streams, lakes and ponds) from stormwater runoff in urban azeas. This is a program to <br /> control "non-point source pollution" from rainwater that runs off from developed areas, <br /> such as streets, parking lots, and buildings. The management measures require that the <br /> initial runoff from such areas, sometimes called the "first flush", be cleaned by being <br /> infiltrated into the ground through drywells or other porous drainage systems, or through <br /> grassy azeas such as vegetated swales, or through sand filters, or by being kept in settling <br /> basins. It is generally thought that the bulk of the chemicals that may have the potential <br /> Hawaii County is an Equal Opportunity Provider and Employer. <br /> <br />