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2-5 <br />Forward Composting Facility SWT Engineering <br /> Report of Composting Site Information - July 2014 <br />z:\projects\allied waste\forward\resource recovery facility\5 yr permit rvw 2013-14\rcsi 2014\text\sec 2.doc <br />Curing and Screening. Following composting, the mixture may be screened or placed in <br />stockpiles up to approximately 12 feet high and approximately 30 feet wide at the base for <br />curing. In curing, a slower rate of decomposition occurs. A curing time of approximately 1 <br />to 6 months is needed. An even longer curing period is desirable for production of a higher <br />quality compost. The curing period will depend on the quality desired and this in turn will <br />depend on the market or final use of the product. Therefore, the capacity of final compost <br />output decreases significantly to produce a higher quality compost product. After curing, <br />the material may be screened. Screening produces a higher quality material, but at <br />additional cost. Oversized material from screening may be returned for grinding, recycled to <br />be used in the compost mixture or landfilled. <br />Alternative Processing. The windrow turning/processing discussed above has been <br />determined to be at optimum. In the event of equipment breakdown, Republic will <br />replace/rent a windrow turner. If this equipment is not available, front end loaders will be <br />used to turn the windrows. <br />Compost Quality. The decision on what quality of compost to produce will depend on the <br />available feedstocks, potential markets for compost, and the overall economics of the <br />composting process. Potential uses/markets for the compost are as follows: <br />♦ Bulk agricultural use; <br />♦ Wholesale to topsoil manufacturers; <br />♦ Turf farm; <br />♦ Farm land reclamation; <br />♦ Wholesale to landscape industry; and <br />♦ Retail to individuals. <br />2.1.3 Facility Construction <br />The operation of the Compost Facility will be coordinated with operation of the existing RRF <br />and landfill facilities. Unloading of materials requiring processing (i.e., material screening <br />and/or grinding) will be done west of the RRF building, as shown in Figure 2. Handling of <br />wood waste, green material, and agricultural wastes will be similar to the existing wood <br />waste handling procedures. <br />The existing conditions plan, legal property limits, and topography are shown in Figure 2. <br />Except for some setbacks, internal roads, the South Fork easement, and County of San <br />Joaquin right of way for Austin Road, virtually the entire South Area is developed for <br />composting (including some of the area now occupied by the RRF). The easement and right <br />of way are shown in Figure 2. A detailed Site Plan, including the unloading, storage, <br />processing, parking and loading areas, and ancillary facilities, is shown on Figure 2. <br />Storage Areas. To the extent feasible, the incoming compostable materials are mixed into <br />compost piles the same day as received. The storage time of compost feedstock is 48 <br />hours. <br />Parking Areas. Visitor and employee parking are on the east side of the RRF building as <br />shown on Figure 5.