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Exhibit 321 (AR 020478–020480) in PCHB Third Runway EIS proceedings. Curriculum vitae of K.M. Leytham, Ph.D., P.E., Principal Hydrologist at Northwest Hydraulic Consultants, Seattle. Documents education (B.Sc. Civil Engineering University of Birmingham 1971, S.M. Water Resources MIT 1974, Ph.D. Hydrology University of Washington 1982 specializing in stochastic modeling of large-scale droughts) and chronological experience including Hydrocomp Inc., Crippen Consultants Inc., Ott Water Engineers Inc. Selected project experience includes PMF studies for Travers and McGregor Dams (Alberta), Snohomish County Drainage Needs Reports, Dai Ninh Hydroelectric Project (Vietnam), Mullen Slough CIP Study (King County), Lewis River Project relicensing (Swift, Yale, Merwin Dams, Washington), Kelsey Dam Safety Review (Nelson River, Manitoba), Black Butte Dam HEC-HMS rainfall-runoff model (Stony Creek, California), Masonry Dam flood control operations (Cedar River, Washington), Walker River hydrology studies (California/Nevada), Seven Mile Dam PMF review (Pend Oreille River, British Columbia), Mill Creek Salem flood reduction study using HEC-HMS and UNET, South Heart River dambreak FLDWAV simulations (Alberta), and Nechako Reservoir inflow analysis (British Columbia) including Pacific Decadal Oscillation (PDO) correlation.