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The recommended method of velocity profiling is the 0.2/0.4/0.8 method. The flow cross - section Is <br /> divided into vertical rectangles across the channel. Within each rectangle, a point velocity measurement <br /> is made at 0.2 x depth, 0.4 x depth and 0.8 x depth. The 0.4 measurement is averaged with the average <br /> of the 0.2 and 0.8 points to estimate the average flow velocity of that particular rectangle. This procedure <br /> is continued for all rectangles and appropriately weighted to <br /> determine an overall estimate of average velocity (See Figure 2). <br /> The velocity measurements (whether single point velocity ` y/ <br /> measurement or more extensive velocity profiling) are recorded ' ' <br /> simultaneously with real -time meter velocity measurement for : <br /> comparison (comparative velocity measurements). The date and <br /> time of written calibration values will be recorded. In some flow <br /> �. <br /> monitoring units, there may be a 5- second time delay between when , 4 _ , <br /> the flow level is sensed by the flow meter, and when the flow f <br /> velocity is displayed on the computer screen). The field personnel <br /> will coordinate the physical and metered comparative velocity <br /> measurements accordingly. Figure 2. 0.210.410.8 Profiling Method <br /> V&A's intent and approach is to (a) provide the most accurate and most reliable data possible for open <br /> channel flow monitoring, and (b) add value to the deliverables to the City, which will allow City engineers <br /> to make necessary decisions quickly and with minimal extra and unnecessary work. <br /> Prolect Personnel <br /> The key project team members are listed as follows: <br /> Key Project Team Members: V &A Consulting Engineers <br /> Jose Villalobos, P.E., Principal -in- Charge <br /> Kevin Krajewski, P.E., Project Manager <br /> Derek Wurst, P.E., Project Engineer <br /> Oliver Pohl, Associate Engineer <br /> Principal Contact Person: Kevin Krajewski, P.E., Condition Assessment Division Manager <br /> 155 Grand Avenue, Suite 700, Oakland, CA 94612 <br /> (510) 903 -6600 (main) and (510) 903 -6601 (fax) <br /> kkrajewskk tvaenaineering.com <br /> V &A is committed to completing this project in a thorough and timely manner with staff that is experienced <br /> and focused on the project requirements. <br /> Hourly Rates <br /> The V &A Fee schedule is shown as an attachment at the end of this document. <br /> 10 -0614 Storm Page 3 of 8 <br /> 1- <br />