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Design Parameters. The composting processes described later in this section all will be developed assuming that composting mixtures are developed for optimum composting and minimum odor generation. The parameters to be used are as follows: • Moisture content- approximately 50 to 60 percent • Carbon to nitrogen ratio (C:N) - greater than approximately 25:1 • Density- less than approximately 1,000 pounds per cubic yard • Porosity structure - as necessary to maintain aerobic conditions The specific mixtures of feedstocks to achieve these parameters are impossible to calculate given the large number of potential feedstocks described in this permit application. The actual feedstocks available and the relative proportions will dictate the development of suitable mixtures. Temperature of the active compost will be monitored to comply with the State and Federal requirements to meet pathogen reduction criteria and also as required for sufficient process control. Moisture content of the active compost will also be monitored as necessary to provide for proper process control. Water Supply. Water for site operations is supplied by two on site production wells: a 1,000-gpm well near the landfill entrance facilities and a 20-gpm well near the RRF building. There will be an approximately 8,000-gallon in the South area. In addition, water is available from the storm water runoff retention pond. These water supplies are available for initial mixing of the compost to bring the water content up to desired levels, wetting of the compost, dust control, and other applications. Preprocessing. Preprocessing and initial handling of feedstocks is also common to the alternatives. Materials with large particle sizes such as wood waste, green material and agricultural wastes may require grinding before composting. These materials will be handled in the existing RRF and ground using the existing grinder. Additional grinding capacity will be added as necessary to handle the required volume of material. Green material high in grass will be mixed as soon as possible with ground wood waste and/or recycled compost and/or other relatively dry and low CA feedstock to minimize odor production. MSW preprocessing depends on the final use of the composted product. Little or no preprocessing is required if the compost is to be directly landfilled or used for landfill cover. Removal of large objects is necessary to prevent damage to Windrow turning equipment and grinding will aid decomposition during composting. Low technology Windrow com-posting of MSW has been successfully implemented in the U.S. If a higher quality product is desired, extensive preprocessing is necessary. This could consist of manual picking of metal, plastics and glass from the incoming material or receipt of source-separated waste. Grinding and trommel screening of the material prior to composting has significantly improved the quality of the final compost product. More mechanized processing has included magnetic and eddy current separation for improved removal of iron and Forward Composting Facility Z:\PROJECTS\Allied Waste\Forward\Resource Recovery Facility\Permitting Services\2009 RCSI\RCSI Final 031609.doc; Page 15