01-03-1985 Council Packet Special Meeting

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Table 4-8 PERCENTAGE OF MIXED WASTE PROCESSED BY COMBUSTION FACILITIES BY C,UNTY BY YEAR 1991- 1996- County 1985 1986 1987 1988 1989 1990 1995 2000 Anoka 0 0 0 0-15 15-50 68 68 68 Carver 0 0 0 0 0-25 70 70 70 Dakota 0 0 0 0-10 10-50 68 68 68 Hennepin 2 2 2 2-10 10-50 68 68 68 Ramsey 1 1 1-5 5-50 60 65 65 65 Scott 18 18 18 18 18-25 71 71 71 Washington 19 19 19-25 25-50 60 67 67 67 Total 40 40 73 430 1,108 1,429 7,368 7,725 (Tonnages in 1000's) Percent of Region 2 2 4 21 54 68 68 68 Solid Waste Composting Solid waste composting facilities will play an important role in managing the region's mixed municipal solid waste. Products and markets must be developed prior to fir,plementing large-scale co -compost facilities. At a minimum the counties should implement a three-year, composting demonstration project. The purpose of the demonstration project is to determine the process requirements and costs necessary to produce a marketable compost pr,iuct. The project should evaluate the use of sewage sludge and septage as a feedstock mat—ial to compost mixed municipal solid waste. The counties will need to coordinate their efforts with the Metropolitan Waste Control Commission and/or septage haulers to obtain adequate quantities of sewage sludge or septage for the project if these are the selected sources of feedstock. The counties should consider de.r-.,Jng at least two demonstration facilities to provide additional flexibility a-,j variety in experimentation. The facili- ties may employ a variety of methods to compost the sludge or septage and solid waste. The facility design should be able to accommodate changing demonstra- tion needs or product marketing requirements. Completely enclosed mechanical composting facilities including ;n-vecsel reactors should be considered at this time. These larger, more capital intensive facilitites require more secure market commitments. The facility should produce a variety of final products for evaluation and mar- ket development. Potential users of the end product should be involved in eval- uating the final products produced by the facility. These users should compare the performance or the co -compost with other soil amendments or additives nor- mally used. Public agencies or private organizations should use the co -compost product on a trial ba! The demonstration project should begin in 1985. The existing cc sting facilities must be expanded in 1988, 1989 and 1990 to •,commodate - flow of organic residuals from processing facilities that will ne on-line later in the decade. A schedule for implementing the co-compost- 4 facilities is shown in Table 4-9.