Integrated Resources & Solid Waste Management Plan Update - Dec 2009

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2.0 WASTE STREAM ASSESSMENT similar study was performed at the SHSL in 20016. We have used the results of the 2001 study and current County disposal data to estimate the composition of waste that enters the East Hawai'i landfill. The results are combined to provide waste composition estimates for total County disposal. Exhibits 2 -14, 2 -15, and 2 -16 show disposed composition estimates for nine waste categories for the entire County, for West Hawai'i, and for East Hawai'i, respectively. When combined, organics and paper comprise more than half of the waste stream. The organics category contains such components as food, green waste, and textiles. Construction and demolition waste accounts for another 22 percent by weight. The construction and demolition category includes such components as clean lumber and gypsum scrap. The composition of waste disposed in West Hawai'i is similar to the composition of disposed waste in East Hawai'i. Two differences that merit mention include: there are more organics disposed of in West Hawai'i (35.3 percent) than in East Hawai'i (29.6 percent); and there is more special waste disposed of in East Hawai'i (5.2 percent) than in West Hawai'i (1.9 percent). The majority of the special wastes disposed of in East Hawai'i consist of industrial sludge, bulky items, and tires. The waste stream assessment developed data for the amount of waste disposed of for 58 different types of waste. Countywide composition estimates for all 58 waste components evaluated during the study are shown in Exhibit 2 -17. EXHIBIT 2 -14 Disposed Composition Estimates by Waste Category: Total County 6 Cascadia Consulting Group, 2001. Waste Composition Study, South Hilo Landfill, County of Hawaii. December 2009 2 -11