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or In some cases, recycled green waste/mulch is applied to protect slopes and assist with the <br /> establishment of grasses to stabilize and protect slopes. Grass is then managed by grazing during <br /> spring and summer to reduce fire risk. <br /> Instantaneous Surface Readings Exceeding 500 ppmv <br /> North County Landfill is tested quarterly for landfill surface emissions pursuant to 17 CCR <br /> Section 20700. Table 4 lists all recently recorded exceedances. <br /> Table 4— Instantaneous Exceedances above 500 my <br /> Year 1"Qtr 2nd Qtr 3'd Qtr 41h Qtr <br /> 2020 None None None None <br /> 2021 None One" Seven None <br /> 2022 None None Two No data <br /> • This was actually anew wellhead that had a loose fitting. <br /> 4 Volumetric Capacity <br /> The 2019 JTD is the most current approved JTD for this site and lists a volumetric capacity of <br /> 41.2 million cubic yards and estimates life of site to last to 2070. Based upon the estimates <br /> shown in Table 3,Organics currently makeup an estimated 18%of the tonnage landfilled. That <br /> equates roughly to 50%of the historic 34%organics estimated in the state analysis. Despite that <br /> reduction the overall tonnage to the landfill has continued to increase,and hence the capacity <br /> projections contained in the current JTD have already accounted for that reduction. <br /> An additional 25% reduction of organics by 2025 would reduce the organics load in the landfill to <br /> less than 10%. However,given the density of most of the organics this is expected to have no <br /> more than a 5% impact on the overall volumetric capacity of the landfill. A 5%increase in <br /> available capacity would provide an additional estimated 2.06 million cubic yards of capacity. <br /> Given that the annual volume consumed near the end of the landfill will exceed 1.2 million CY/yr, <br /> this would have the net effect of extending the life of the landfill 1.5-2 years. Such a minor <br /> variation would be within the margin of error for the estimates for both the closure and post <br /> closure maintenance plans. <br /> 5 Waste Handling Methods <br /> The tonnage handled by the landfill has continued to expand due to growth in the region despite <br /> the reduction in organics. Hence there have been no identifiable changes in operations either <br /> prior to or expected in the future due to continued reduction in organics. <br /> 6 <br />