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Assumptions: <br />. Consultant will provide all equipment required to complete the survey <br />4. Field Reconnaissance <br />Consultant and County staff shall conduct a field reconnaissance of the project site. The team <br />shallexamine: <br />. Condition and characteristics of the existing Hanson Pits Levee and downstream private <br />berm. <br />. Condition and characteristics of the borrow pits, <br />. Geomorphic characteristics of the active channel in the vicinity of the project site, <br />including bed and bank morphology and large wood characteristics. <br />. Geomorphic characteristics of the floodplain, including floodplain surface topography, <br />forest stand characteristics, and the location of man-made facilities. <br />During the reconnaissance Consultant and County staff shall discuss the project and possible <br />alternatives in relation to the stated goals, objectives, and constraints. <br />Deliverables: <br />. Observations and photographs to be included in the project report. <br />Assumptions <br />r The inspection will last three to four hours. <br />. A member of the County survey crew will participate for one hour to discuss the <br />bathymetric survey. <br />. Physical feature condition assessments will be qualitative. No quantitative testing will <br />occur (e.9. soil borings, etc.). <br />5. Hydrology Review <br />The Consultant shall review and update hydrologic information generated for the 2015 corridor <br />investigation. They shall update annual instantaneous peak flow flood frequency values as well <br />as review the characteristics of the irrigation-driven "flip-flop" that occurs in the river each year <br />between May and September, whereby high and low flows do not correspond to their natural <br />timing. The key outcomes of this task will be to generate flood hydrographs to use in the <br />hydraulic model and to associate observed historical geomorphic changes to recorded peak <br />flood and sustained irrigation summer flip-flop high flows, <br />Deliverables: <br />o Updated annual instantaneous peak flood frequency discharges. <br />. Updated understanding of the timing, magnitude, and duration of the irrigation-driven <br />"flip-flop". <br />o ldentification and description in the project report of events that have caused significant <br />geomorphic. <br />r change. <br />Assumptions: <br />o Deliverables will be included in the project report