Task 2 – Flight Planning Sample Clauses

Task 2 – Flight Planning. The foundation for the Project is the acquisition of aerial imagery suitable for production of high-quality digital elevation data, high-resolution color orthophotography, and map compilation for the project area. Based on the project extent for ortho delivery (~ 219 mi²), the vendor will develop a preliminary flight plan for collecting digital imagery for the Project. Parallel flight lines are designed in a north-south direction, except for additional spot shots and flight lines taken over major bridge overpasses. All imagery will be acquired at a maximum GSD of 7cm (≤ 0.229 foot). Forward overlap within a line will be maintained at a minimum of 80% for all lines. Side overlap between lines will be a minimum of 40% for all lines. Additional “spot shots” and lines will be flown directly over significant bridges and high-rise buildings to ensure minimal distortion of elevated structures. Given that the optimal leaf-free flight window in the Puget Sound area is very short due to sun angle and unpredictable spring weather conditions, the vendor’s flight plan will address three scenarios: a) Assuming sufficient time and optimal flight condition. The vendor will commit to completing the entire flight mission in its entirety before full leaf-out; b) conditions not permitting, the flight plan will be revised to reflect an early-summer mission, conceivably with a somewhat- or much-reduced Project area; c) the Project will be either cancelled or deferred until 2024 (no flight plan required). Should Scenario a) not be feasible, Alliance, Project Participants, and the vendor will fully discuss alternative approaches and promptly decide on a contingency plan. At this point the vendor will immediately prepare and submit an invoice to cover expenses to date, including project management, aircraft mobilization, survey control, etc. The vendor flight plan will address the following factors: • Coverage to the full extent of project area tiles regardless of land/water boundary. • Type of aircraft, camera and airborne GPS configuration. • Image overlap including sufficient coverage at project edge. • Additional images over freeway interchanges and other elevated structures to minimize “lean” • Minimum sun angle requirements for reduced shadows. • Coordination with Sea-Tac ATC. • Contingency options for weather, aircraft, and/or equipment issues • Post-flight imagery inspection and scheduling of reflight(s), if needed • Supplemental survey control needed