Agmt17 V & A Consulting Engineers, Inc.

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verify monitor accuracy over a range of flow depths. The flow data will be collected at 5 -minute intervals and reported at 15 -minute intervals. The meters will be implemented at each site visit and the data (considered preliminary) will be provided to the City for review on a weekly basis within three (3) days after implementation. At the City s discretion, the data submittals may be reduced to a biweekly basis after the first two (2) weeks if the initial data appears to be good. The final data shall be compiled following removal of the flow meters and the rain gauge. In the event that more than one flow meter fails to provide usable data during a significant storm event (> 0.5 inches of rainfall in 24 hours), Consultant shall extend the monitoring period for up to two (2) weeks at no additional cost to the City. Deliverable: Consultant shall provide, install and remove six (6) flow meters and minimum of one (1) rain gauge for a period of sixty (60) days starting no later than December 11, 2017, with an option to extend the monitoring on a weekly basis up to one additional month. Additional rain gauges may be used to insure accurate and appropriate readings at no additional cost to the City. 3. Data Analysis and Flow Monitoring Report: Consultant shall provide data analysis and a flow monitoring report that includes, but not limited to, site details and pictures; field installation and maintenance sheets including calibration data; depth -velocity scatter plots; 7 -day plots of flow for each meter and rainfall for each rain gauge; and summary tabulation of daily average, minimum, peak flow, inflow and infiltration information (Inflow rate and Rain Dependent Infiltration rate analysis) and site comparison for each flow meter. Report to be finalized and approved by the City. Consultant shall make revisions to the report to the satisfaction of the City at no additional cost. Deliverable: Consultant shall provide the City with a Flow Monitoring Report (1 hard copy and 1 digital, PDF, copy). Electronic files shall be submitted in Excel format containing depth, velocity, and flow rates for each meter and rainfall for each rain gauge in 15 -minute intervals. Additional computer data or models used shall be submitted as well. Final report and data shall be delivered within three (3) weeks of completion of flow monitoring. Consultant shall perform all the work in the best workmanlike manner, conforming to all applicable standards, specifications, codes, laws, and regulations. Consultant shall take all necessary safety precautions and comply with all applicable Federal, State, and local regulations including those relevant to work in confined spaces. Consultant shall comply with all applicable traffic control requirements including those of the City or agency with jurisdiction over the meter sites. REV: 11-28-17 PR Page 10 of 11 ATTY/AGR.2017.280N & A Consulting Engineers, Inc.