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material revenues were derived using EPA data for waste stream <br />composition and recovery probabilities applied to forecasted <br />prices for the recovered products at the point of origin. <br /> <br />Average net costs were calculated as the difference between the <br />annual costs and the total revenues. The net cost, in effect, <br />represents the tipping fee that would have to be charged in order <br />to ensure that the process breaks even. In reality, tipping fees <br />are often determined more by local influences or by the costs of <br />alternative disposal options such as landfilling. <br /> <br />Table 4 <br /> <br />PROGRAM COSTS FOR RESOURCE RECOVERY FACILITIES <br /> <br /> Revenue <br /> from Average <br />Capital Annual Energy or Net Costs <br />Costs Costs Materials (Savings) <br />($ millions) (S/ton) (S/ton) (S/ton) <br /> <br />Facilities Less Than 100 TPD <br /> <br />Modular Incin- <br />eration 1.3 <br /> <br />14.5 9.0 5.5 <br /> <br />Dano Composting <br /> Drum 0.5 <br /> <br />9.7 ~8.0 1.7 <br /> <br />Facilities 100 tO 500 TPD <br /> <br />Waterwall Incin- <br /> eration 17.0 <br />RDF 8.8 <br /> <br />Dedicated <br /> Boilers 16.8 <br /> <br />Dano Composting <br /> 'Drum 1.6 <br /> <br />29.0 18.0 11.0 <br />20.0 8.0 12.0 <br /> <br />34.0 21.4 12.6 <br /> <br />6.0 8.0 <br /> <br />(2.0) <br /> <br />Facilities Over 500 TPD- <br /> <br />Waterwall Incin- <br /> eration 31.0 <br /> <br />RDF 17.0 <br /> <br />Dedicated <br /> Boilers 32.0 <br /> <br />Dano Composting <br /> <br />25.0 18.0 7.0 <br />17.0 8.0 9.0 <br /> <br />30.0 21.4 8.6 <br /> <br /> Drum 4.3 5.9 8.0 <br /> <br />Source: Minnesota Pollution Control Agency, 1979 <br /> <br />(2.1) <br /> <br /> <br />