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///VCESTTURY <br />E N G I N E E R N G <br />• Site demolition of existing airfield features <br />• Geometric layout of runway and taxiway improvements <br />• Layout of proposed electrical lighting and signage improvements <br />• Taxiway profile and site grading design <br />• Temporary erosion and sediment control <br />• Site geotechnical investigation for the purposes of pavement design <br />• Airfield pavement design <br />• Construction phasing for each individual project <br />• Layout, and sizing of airfield storm drainage improvements <br />r- 114"1 l: <br />A Draft Advanced Airfield Engineering Design Memorandum will be prepared to document the design <br />rationale that is implemented. This memorandum will be finalized following a County and FAA review <br />meeting to discuss comments on the draft memorandum. <br />While it is anticipated that the design will be advanced to a level of approximately 60%, the plans that will <br />be developed are intended to serve as an overview and documentation of the design rather than full 60% <br />bid documents. It is also expected that electrical engineering and load calculations will not be required for <br />airfield lighting and signage improvements at this time. <br />Deliverables: <br />a Draft and Final Geotechnical Report <br />• Draft and Final 60 Percent Advanced Airfield Design Plans <br />• Draft and Final Advanced Airfield Engineering Design Memorandum <br />5.2. ADVANCED FLOOD MITIGATION DESIGN <br />The design for the proposed flood mitigation improvements will be advanced. Additional alternatives <br />analysis will be performed to ensure the optimal and least impactful solution is implemented. The design <br />will include layout, sizing and grading for flood mitigation BMP's and will incorporate the calculated <br />outflows from the airfield storm drainage design into the hydrologic model. <br />Drawings depicting the layout, sizing and grading for the proposed improvements will be incorporated <br />into the Advanced Airfield Design Plan deliverable from Section 5.1 of this memo. The Floodplain <br />Assessment Report deliverable will be amended from the effort that has been performed to date. <br />Deliverables: <br />• Draft and Final Floodplain Assessment Report <br />• Draft and Final Stormwater Design Report and Improvement Plans <br />Bowers Field Airport Environmental Assessment Page 9 <br />Advanced Design Needs for NEPA Analysis <br />November 27, 2019 <br />