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♦ Maintaining a carbon-to-nitrogen (C:N) ratio above 25:1 in initial mixes of high nitrogen materials. ♦ Placing a layer of cured compost over raw compost materials to act as an odor trap and serve as insulation. ♦ Using an organic odor neutralizer. If questionable or objectionable on-site odors are detected from an incoming load (vehicle) upon arrival at the scalehouse by site personnel, operations personnel implement the following protocol: 1. Investigate and determine the likely source of the odor. 2. Determine if on-site management practices could remedy the problem and immediately take steps to remedy the situation. Possible on-site odor sources and likely management actions are shown in Table 1. 3. Determine whether or not the odor is traveling beyond the site by patrolling the site perimeter and noting existing wind patterns. 4. If it is determined possible odor impacts occurred, contact is made with the appropriate Local Enforcement Agency (LEA) and/or neighbors. 5. Log the odor source and corrective actions taken in the Site Operations Log and Special Occurrences Log. If questionable or objectionable odors are detected by site personnel, they can reject the incoming load and this action is documented in the Special Occurrence Log. It should be noted that with regard to the transfer station, waste handling activities are conducted within the partially enclosed transfer station building and all wastes within the transfer station building are removed and delivered to the landfill within 24 hours of receipt. 1.2 CLIMATIC CONDITIONS 1.2.1 General Conditions Climatic conditions are not expected to adversely affect site operations. The climate of the region is typical of the California Central Valley. Winters are cold and wet with fog, while summers are hot and dry. Temperatures range from a minimum average value of 37°F in December to a maximum average value of 94'F in July, with an annual mean temperature of 62.4°F (www.weather.com). Rainfall is seasonal in the Central Valley region, with approximately 90 percent of the rainfall occurring between November and April. Figure 3 illustrates the isohyetal precipitation map for San Joaquin County. The isohyetal precipitation map divides San Joaquin County into three rainfall intensity zones. The RRF/landfill is located in Zone 2 and receives approximately 17.87 inches annually. The Forward site is not located within the 100-year flood plain. According to the Federal Emergency Management Agency (FEMA) Federal Insurance Rate Map (FIRM), (see Figure 4), the majority of the landfill is located within "Zone X", which are areas determined to be outside the 0.2 percent annual chance of being in a floodplain. Forward Compost Facility-OIMP 3 SWT Engineering z:\projects\allied waste\forward\resource recovery facility\5 yr permit rvw 2013-14\tpr 2014\appendices\app a-3-oimp\oimp text—rev 111414.doc;11/18/2014