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3-9 <br />Forward Composting Facility SWT Engineering <br /> Report of Composting Site Information - MayJuly 2014 <br />z:\projects\allied waste\forward\resource recovery facility\5 yr permit rvw 2013-14\rcsi 2014\text\revision track_july 2014\sec <br />3_revtr.doc <br />Water uses include site construction and waste disposal operations, RRF/Compost Facility <br />operations, dust control, equipment maintenance operations, sanitary facilities, firefighting, <br />and emergency situations. <br />c. Preprocessing Procedures <br />Preprocessing will include inspecting the incoming material to remove any visible <br />contaminants. Loads will be visually inspected in the material sorting area at the <br />RRF/Compost Facility (see Figure 2). A magnetic separator is used to extract nails and other <br />ferrous contaminants from the green waste material after it has been shredded. Since <br />incoming biosolids are not anticipated to have heavy metal concentrations above regulatory <br />limits, other preprocessing procedures will not be necessary. <br />d. Process Time <br />As discussed in Section 1.3.1, the Compost Facility is designed and permitted to process up <br />to 1,100 tpd of waste. The specific capacity depends on the composting process being <br />used, density of materials, and the quality of compost product. The compost process time is <br />between approximately 4 to 12 weeks, depending on the compost product quality. The <br />curing process takes from approximately 1 to 6 months. <br />e. Chemical or Bulking Agents <br />As previously mentioned, amendments and/or additives are not currently utilized at the <br />RRF/Composting facility. In addition, any oversized screened materials are landfilled. <br />3.5.3 Climatic Conditions <br />Climatic conditions are not expected to adversely affect site operations. It does not snow <br />but can occasionally freeze at the site. Forward implements a winterization program each <br />year to prepare the internal roads for all weather access during the rainy season (October <br />through April). <br />The climate of the region is typical of the California Central Valley. Winters are generally cold <br />and wet with fog, while summers are hot and dry. <br />Climatological data used in the site design was gathered from representative weather <br />stations near the site. Representative climatologic stations were selected based on their <br />proximity to the site and a reliable period of records for the station. <br />Temperature. Summer high temperatures often exceed 100 degrees Fahrenheit (°F), <br />averaging from the low 90’s in the northern part of the valley to the high 90’s in the south. <br />The daily summer temperature variation can be as high as 30°F. Winters for the most part <br />and mild and humid. Average high temperatures during the winter are in the 50’s, while the <br />average daily low temperature is approximately 45°F. <br />Precipitation. Precipitation at the project site is typical of the Central Valley region. Rainfall <br />is seasonal, with approximately 90 percent of the rainfall occurring between November and <br />April. Snowfall is unusual at the site. <br />Figure 7 presents an isohyetal precipitation map for San Joaquin County showing lines of <br />equal precipitation on a countywide basis (San Joaquin County Department of Public Works, <br />1991). The isohyetal precipitation map divides the whole of San Joaquin County into three <br />rainfall intensity zones. The project site is located in Zone 2 of the three rainfall zones, as