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REV: 06-16-2021 EV & MI <br />c. Evaluate the dispersion profiles of the released gases in the surrounding <br />area considering the local wind conditions <br />d. Analyze the results from the dispersion analysis in relation to acceptance <br />criteria extent of release and time of travel <br />e. Provide results and summary in a report format <br />2. Key assumptions for the outdoor consequence evaluation: <br />a. Meteorological conditions (wind speed and atmospheric stability) for the <br />worst-case scenario will be used <br />b. Assumed wind direction will be based historical meteorological data for the <br />Redwood city area <br />c. Up to a maximum of three different worst-case release scenarios will be <br />considered <br />Deliverable(s): Project Team will prepare the following results from the PHAST analysis: <br />a. Isopleths of concentration contours of the hazardous chemicals projected <br />on the GIS map to inform of the hazard zone <br />b. Time (from the onset of leaking of the gas) to reach hazardous levels of <br />concentration at a location of interest (plots of concentration vs time at a <br />given location) <br />c. Threshold concentration vs distance plots <br />d. Results from the PHAST analysis will provide information on the extent of <br />the hazard to the surrounding areas and the time to reach threshold <br />concentrations <br />Budget Range and Schedule: $15,000 to $20,000 and will take approximately four weeks <br />to perform upon receiving all the required information from the City. <br />Fee <br />The not-to-exceed time and materials fee to conduct the scope of work (without Optional <br />Task A) noted above is $52,300. This fee includes all professional and support staff time, <br />as well as direct expenses. Efforts that require additional work will be conducted upon <br />authorization as an additional service and billed on a time-and-materials basis according <br />to our standard rates below. <br />ATTY/AGR.2021.142/Fehr & Peers (Page 15 of 16)