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option because it will also serve other properties along Ponahawai Street between Komohana Street and Keawe Street. 24. Solid Waste: Solid waste will be disposed of by private hauling contractors or individuals to approved transfer stations, the Hilo landfill site or the Pu'uanahulu landfill site when the Hilo landfill has reached capacity. The applicant estimates that the original proposed project at build out will generate approximately 10,000 pounds of solid waste per day. A Solid Waste Management Plan, approved by the Department of Environmental Management, will be implemented by the applicant to handle solid waste during construction and operation of the development. Programs for recycling and re-use will also be encouraged. 25. Drainage: The Alenaio Stream and a second drainage way referred to as North Alenaio Stream traverse the property in a mauka-makai direction. Both of these drainage ways are shown as flood plains on the FEMA FIRM map and convey storm water under Komohana Street and toward Hilo Bay. The Alenaio Stream's 100-year storm water flow was • estimated in 1990 by the U.S:Army Corps of Engineers to be 7,000 cubic feet per second (cfs). The 100-year storm water flow within the North Alenaio Stream drainage way was estimated to be 400 cfs. Presently, off site storm water runoff generated mauka of the Mohouli Street Extension is directed through culverts into the Alenaio Stream drainage channel and crosses the subject properties. Additional runoff from existing residential areas to the north enter the subject properties through a concrete lined open channel nearby and parallel to Omao Road. Previous studies indicate that approximately 250 cfs flows from the Omao Road channel. Storm runoff generated from the project site will be managed by roadside gutters, swales, culverts, storm drainpipes, open ditches and drywells. The development will comply with Hawai`i County Code drainage requirements by retaining any increase in runoff due to the development on-site,based on a 10-year storm design. Regulatory requirements for improvements to the Alenaio Stream drainage way may include,but are not limited to obtaining a Stream Channel Alteration Permit from the State Commission on Water Resource Management, obtaining a Department of the Army Section 404 Permit from the -12-