2007/04/04 Council Agenda Packet

r, 5. Task 16B—The City that HDR provide a peer review of a another water line design project under this contract. 6. Task 16C—The City has requested that HDR add to our scope of services an update of the Watershed Control Plan for$17,950. 7. Summary of additional out of scope services provided to date(not included in Amendment No. 1). These additional services and budgets have been approved via e-mail and are to be budgeted in Amendment No. 2. Task No. Item Estimated Additional Cost 5 Additional population/demand forecasting services $11,100 5 (using Services to correct pressure zone/GIS flow $1,440* (*use 16A budget) allocation data provided by the City Task 16A budget— not ineld. in total) 6 Additional services related to the Conservation Plan $5,970 chapter analysis and additional Everett conservation measures. 7 Additional Watershed modeling and scenario $2,800 analysis—working with UW 9 System analysis modeling delays, modeling review $8,600 services, data discrepancies, and diurnal curve redo with new meter information. 9 City request for HDR to reallocate demands to new $3,220 hydraulic model 16B Waterline design peer review $1,700 16C Watershed Control Plan Update $17,950 Total Amendment No. 1 Item 3 Additional Cost $51,340 Amendment Item 4 - Additional Water Plan Services from August 2006 to Project End (estimated June 2007) 1. Task 1 —Project management—the existing contract completion date is December 31,2006. Extend the contract expiration date to June 30, 2007. Cost impact: $4,000 ($2,000 covered with existing budget transfer). 2. Task 5 —Additional November and December revisions of the flow forecasts analysis as a result of the follow-up comments from wholesale customers—approximately 36 hours. Cost impact: $3,800. 3. Task 9 —Reevaluation of the system for 1,000 gpm fire flow in addition to the originally agreed-upon 1,500-2,000 gpm fire flow—approximately 68 hours. Cost impact: $8,500. 4. Task 9—Made additional corrections to small pipes diameters in the model to reflect client's research into these incorrectly characterized pipes—approximately 16 hours plus additional time spent because these pipes caused problems with the system modeling calibration and modeling. Cost impact: $1,900. 5. Task 15 —Final Plan Assembly—We were not budgeted to prepare the intermediate draft plan that was put together and sent to the City in December. That submittal used up most of the budget allocated for the DOH plan submittal. Approximately half of the expended budget is 19 applicable to the DOH plan submittal. Cost impact: $3,400 +$1,500 printing. Everett CWP 7 of 8 Amendment No. 1-Exhibit A-1