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r • Draft Supplemental Environmental Impact Report Page IV.A-25 Forward Inc.Landfill 2018 Expansion Project • have an adverse impact on Circle-to-Land procedures at SCK. The Initial Climb Area (ICA) associated with SCK's departure procedures wase analyzed, using SCK's standard Climb Gradient of 200 feet per Nautical Mile (NM) for aircraft departing • Runway 11L. Neither portion of the proposed project would penetrate this ICA or have an adverse impact on departure procedures at SCK. An analysis of SCK's Visual Flight Rule (VFR) Traffic Pattern Airspace was completed to determine the maximum elevation to which a landfill could be erected without impacting • aircraft operating in visual conditions at SCK. Neither portion of the proposed project would • penetrate the VFR Traffic Pattern for SCK. In summary, the proposed final grades of the 2018 Expansion Project would not(a)penetrate A obstruction criteria for Stockton Metropolitan Airport (SCK), (b) penetrate Obstacle Clearance • Surfaces (OCS) or Circle-to-Land Obstacle Clearance Surfaces (OCS), or have an adverse impact on arrival procedures at SCK, (c) have an adverse impact on departure procedures at SCK, or (d) penetrate the Visual Flight Rule (VFR) Traffic Pattern for SCK. (Williams Aviation Consultants, 2017). Therefore, the final grades of the proposed expansion project would have a • less-than-significant impact on safety due to conflict with FAR height limits or the airport • imaginary space. However, when the two expansion areas have been filled to an elevation near their permitted heights, equipment operating on top of the landfill could temporarily intrude into the conical • space. Forward would continue its procedure of submitting a Notice of Proposed Construction or Alteration (FAA Form 7460-1) at least 45 days prior to operation of any equipment that could temporarily intrude into the imaginary surface, as required by the Federal Aviation Administration (FAA) for all proposed construction or alterations that could intrude into the • airport imaginary surface. This would reduce the impact of operating equipment on the conical • space to a less-than-significant level. The impact of the 2018 Expansion Project on FAA height limits would be less than significant and no mitigation is required. Impact AA: The proposed project could increase bird hazards at the Stockton Metropolitan Airport(Revises 2013 EIR Impact A.Q. As discussed in Bird Strikes and Gull Control, in the Setting section above, the existing landfill has not generated significant bird strike hazards for • the Stockton Metropolitan Airport in the past from gulls or other bird species, and a bird control • program has been successful in controlling birds at the landfill. The proposed Project would continue to employ current bird control measures including properly compacting and covering wastes at the end of each day, and use of falcons,bird flares, whistles, and bombs. The maximum elevation of the expansion area would be approximately 200 feet above mean sea • level (MSL), lower than the permitted maximum height of 210 feet MSL for the existing Forward Landfill. As discussed above, the proposed expansion would not conflict with FAR height limits. However,both portions of the 2018 Expansion Project would have higher surfaces that could increase the hovering altitude of any birds attracted to the landfill, and thus • could create a hazard to aircraft.