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2-3 <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 />The Forward Landfill and RRF/Compost Facility are owned and operated by Forward, Inc., <br />which is wholly-owned by Republic Services, Inc. There are no leased parcels at the site. <br />Figure 3 shows the parcels owned by Forward and land uses within one mile of the site <br />boundary. <br />2.1.2 Design Details <br />A design detail drawing for the windrow composting using a windrow turner is attached as <br />Figure 4. Calculations supporting this design method are included in Appendix B. A number <br />of composting processes may be utilized at the Forward Compost Facility. The composting <br />process to be used will depend on the specific feedstocks to be processed and the <br />experience gained in developing compost mixtures. The intent is to use the least complex <br />and most cost efficient process that is found suitable for the types of feedstocks to be <br />composted. The decision to construct/develop the necessary infrastructure will be specific <br />to the process and based on economics. <br />Design Parameters. The composting processes described later in this section will be <br />developed assuming that composting mixtures are developed for optimal composting and <br />minimal odor generation. The parameters to be used are as follows: <br />• Moisture content - approximately 50 to 60 percent <br />• C:N ratio - greater than approximately 25:1 <br />• Density - less than approximately 1,000 pounds per cubic yard <br />• Porosity structure - as necessary to maintain aerobic conditions <br />The specific mixtures of feedstocks to achieve these parameters are impossible to calculate <br />given the large number of potential feedstocks described in this document as allowed in the <br />SWFP and WDRs. The actual feedstocks available and the relative proportions will dictate <br />the development of suitable mixtures. <br />Temperature of the active compost is monitored at multiple points to comply with the State <br />and Federal requirements to meet pathogen reduction criteria and also as required for <br />sufficient process control. Temperature/turning records also indicate when pathogen <br />reduction has been met as well as when the windrow has been moved to be screened. <br />Moisture content of the active compost is monitored, as necessary, to provide for proper <br />process control as well as nuisance control (e.g., odors). Monitoring results are documented <br />and records are maintained at the facility. <br />Water Supply. As previously discussed in Section 1.2.1, there are four production water <br />wells at the site. One well, located near the main entrance facility was drilled to a depth of <br />approximately 135 feet and groundwater occurs at a depth of approximately 70 feet. This <br />well was likely installed before the opening of the landfill, having been previously used for <br />agricultural purposes. It is pumped at a rate of approximately 1500 gallons per minute <br />(gpm) at a maximum frequency of approximately 27 times during a typical work day. <br />Another well is located south of the South Fork of South Littlejohn’s Creek, in the southeast <br />corner of the Compost Facility/RRF area, and has a capacity of 500 gpm. The third well is <br />located along the northern boundary of the landfill. This well was installed in 1972 and has <br />a production of approximately 60 gpm. The fact that groundwater flow near the Forward <br />Landfill is not modified by pumping from this well suggests that it is screened in a confined <br />unit below the uppermost groundwater units that are monitored at the site. The fourth