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1-6 <br />Forward Composting Facility SWT Engineering <br /> Report of Composting Site Information - August 201 9January 2022 <br />z:\projects\allied waste\forward\resource recovery facility\5 yr permit rvw 2019-2020\rcsi 2019\text\sec 1.doc <br />⧫ New windrows are up to approximately 10 feet high. <br />⧫ Composting period is projected to be approximately 8 weeks depending on product <br />desired. <br />⧫ 40 percent volume reduction after composting. <br />ASP composting differs from the traditional windrow composting due to the forced aeration <br />through the pile. This technology is able to process more material in a smaller footprint and <br />in a quicker duration than windrow composting. In addition, th is technology is considered a <br />Best Available Control Technology (BACT) and has superior emissions controls. The type of <br />system at this facility will be pipe -on-grade aeration, where aeration pipes are laid on the <br />working surface, then the pile formed on top o f the pipes. Piles are not turned as is seen <br />with windrow composting, instead they remain on the aeration pipes for the duration of the <br />active phase, then are removed and reformed on aeration pipes for the curing phase. This <br />further reduces emissions due to the reduction in pile turning. <br />Figure 4 depicts the windrow composting using a windrow turning machine option and the <br />ASP system using positive aeration . The facility design capacity is discussed in Section <br />1.3.4 and calculations are included in Appendix B . <br />Sufficient space to store materials during p eak operating periods without infringing upon <br />traffic flow or equipment operation is available at the facility. In instances of emergency <br />situations where the inflow rate could be increased and/or additional waste storage is <br />needed, the LEA is contacted t o coordinate the best procedures to minimize potential short - <br />term environmental nuisances and public health issues and complaints. During periods of <br />peak loading, the unloading area may be expanded to accommodate higher hourly inflow <br />rates and minimize the potential for customer traffic stacking out onto Austin Road. The <br />vehicle queuing/stacking area leading up to the scales and fee booth is sufficient and has <br />proven adequate during peak loading. Additional manpower and equipment will be <br />available, as ne eded, during periods of peak loading. At no time will the site exceed the <br />1,100 tpd (for the Composting Facility) or 8,668 tpd (for the combined Forward Landfill, <br />RRF, and Composting Facility) permitted maximum for all wastes and materials. <br />1.3.2 Average Daily Throughput <br />The combined maximum tonnage for the Forward Landfill, RRF, and Composting Facility is <br />46,080 tons per week (not to exceed 8,668 tpd). The total permitted throughput for the <br />RRF is 3,080 tpd and as previously mentioned, the total maximum daily tonnage for the <br />Composting Facility is 1,100 tpd. The average load capacity that will be received will vary <br />with the maximum throughput of 1,100 tpd (for the Composting Facility), as discussed in <br />Section 1.3.1 . The current quantity being processed is a fraction of the maximum loading. <br />Forward develops organic materials for the marketplace and may increase the quantity of <br />materials composted depending on the demand and ability to use the composted product. <br />The specific materials to be composted dep end on a number of factors: <br />⧫ Availability of materials delivered to Forward <br />⧫ Available markets or end use of compost produced <br />⧫ Specific ratio of materials and compatibility in development of compostable mixtu res <br />(i.e., moisture content, Carbon:Nitrogen [C:N] ratio, porosity, etc).