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4.7 SITE LIFE PROJECTION <br /> 4.7.1 SITE LIFE CALCULATIONS <br /> In order to calculate the site life for the Forward Landfill, the following criteria <br /> was utilized. <br /> • Remaining Site Capacity (with liner, daily, <br /> intermediate and final cover) 32.3 mcy <br /> • Refuse to Cover Ratio 4:1 <br /> • In-Place Density 1,740 lbs/cy <br /> Based on the above criteria and utilizing a inflow rate of 32,506 tons/week with <br /> a 2 percent annual growth rate and a maximum weekly permitted refuse inflow <br /> rate of 46,080 tons/week, the Forward Landfill will have a projected site life of <br /> 13 years. Based on these calculations (see Table 8) operations at the Forward <br /> Landfill could extend to March 2017. <br /> 4.7.2 FACTORS AFFECTING SITE CAPACITY <br /> Many factors can affect the ultimate site capacity of a given landfill including <br /> variations in waste type, compaction rates, the use of alternative daily covers and <br /> the annual tonnage delivered to the landfill. The actual daily tonnage at the <br /> Forward Landfill depends greatly on the economy. Since a good majority of the <br /> waste accepted at the Forward Landfill will be construction/demolition type <br /> wastes, the inflow will be dependent on how much of that type of work is <br /> occurring in the area. The tonnage will also vary as the contracts with clients <br /> fluctuate and specialty markets change. Therefore, there may be times when the <br /> Forward Landfill will be accepting the maximum permitted tonnage of 46,080 <br /> tons/week and others where it may fall way below. Table 8 is presented to <br /> provide a rough estimation of the inflow to the Forward Landfill for permitting <br /> purposes. <br /> In addition, long-term landfill settlement can also have a great impact on site <br /> capacity and may average 25 percent of the total refuse thickness. The total <br /> effects of settlement will depend on various factors or processes such as the <br /> types of refuse placed and their corresponding moisture content, the refuse <br /> Forward Landfll JTD 4-12 <br /> J:\Allied\Forward\JTD Amendment\Final JTD Amendment\)TD Sec 4 080105.doc:05/24/02 <br /> BRYAN A STIRRAT 6 ASSOCIATES <br /> Amendment No.1: 8/1/2005 <br />