Laserfiche WebLink
Scope of Services <br /> Continued <br /> Task 2: Assist OTAK Staff with Model Output Frequency Analysis <br /> MGS will assist staff from OTAK in performing flood-frequency analysis on flow time series <br /> computed using the SWMM model following the long-term simulation. MGS will modify <br /> existing spreadsheet tools for compatibility with output time series computed by SWMM. <br /> These spreadsheets compute flood-frequency statistics using a non-parametric plotting <br /> position approach. <br /> Deliverables: Excel spreadsheet tools for analyzing flood magnitude-frequency statistics <br /> computed using SWMM. Support in using the spreadsheet tool and interpreting results. <br /> Hours Rate Amount <br /> Bruce Barker,P.E. 24 $125.00 $3,000.00 <br /> 24 $3,000.00 <br /> Optional Task 3: Develop Design Storms for up to Three Storm Magnitudes <br /> The ten year time series used to analyze the sewer capacity may not contain storm(s) that are <br /> sufficiently large enough to design mitigation alternatives. Work under this task will consist <br /> of developing storms using synthetic design hyetographs and regional precipitation- <br /> frequency statistics. The design storms will be inserted in the historic record in place of <br /> historic storms to ensure that antecedent moisture conditions are correctly accounted for <br /> leading up to the storm of interest. <br /> Deliverables: Precipitation time series for use in SWMM with events of specified magnitude <br /> embedded in historic record. <br /> Hours Rate Amount <br /> Bruce Barker, P.E. 24 $125.00 $3,000.00 <br /> 24 $3,000.00 <br /> Grand Total 82 Hours $10,270.00 <br /> City of Everett—North Everett Combined Sewer System Evaluation 12 <br /> otak <br /> IC\project\31500\31520\Contract\Amendll_NAreaFlooding\31520 Everett SeweL43.endment 1 Scope082510.doc <br />