Final - Massachusetts Water Resources Authority

Highlights of changes from FY11 Final for the FY09-13 Cap Period(please refer to Appendix 4 for detailed project information)Wastewater System Improvements:Wastewater spending in the FY09-13 period decreased by $69.7 million due to the combined impactof revised schedules and cost estimates of certain projects.Interception and Pumping (I&P): ($6.2) millionWest Roxbury Tunnel project FY09-13 spending decreased by $6.0 million primarily due to arevised cost estimate for tunnel construction.I&P Asset Protection project spending increased by $2.4 million primarily due to a revisedcost estimate for Headworks Upgrades Construction. Also, new projects were added forSection 156 Rehabilitation Design/Build and Owner’s Representative, Prison Point GearboxRebuilds, Caruso Pump Station HVAC & Fire Detection System Upgrade, DeLauri PumpStation Electrical Room Cooling, and revised schedule for Pump Station/CSO ConditionAssessment. These increases were partially offset by estimates for Prison Point HVACUpgrades, revised schedule for Alewife Brook Pump Station Rehabilitation, and revised costsand schedule changes on a variety of smaller projects.Braintree-Weymouth Relief Facilities project spending decreased by $2.6 million due to arevised cost estimate for Rehabilitation of Section 624 based on a lower bid award and revisedcost for land settlement. This decrease was partially offset by a new project for Braintree-Weymouth Improvements.Wastewater Process Optimization project spending decreased by $2.1 million primarily due toa revised schedule for Hydraulic Flood Engineering Analysis (North System).Treatment: ($37.3) million Deer Island Treatment Plant Asset Protection project spending in the FY09-13 period decreasedby $36.3 million primarily due to revised schedules for North Main Pump Station (NMPS)Motor Control Construction, NMPS Variable Frequency Drives (VFD) ReplacementConstruction, Electrical Equipment Upgrades 4 and 5, Winthrop Terminal Facility VFD,Switchgear Replacement, Thickened Primary Sludge and Pump Replacement Construction,and revised cost estimate for Digester Module 1 and 2 Pipe Replacement contract. Thesedecreases were partially offset by new projects for Clarifier Rehabilitation Phase 2, Digesterand Storage Tank Rehabilitation Design/ESDC, and revised cost estimate for Expansion JointRepair Construction 2.Residuals: ($2.3) millionResiduals Asset Protection total project spending decreased by $2.3 million primarily due toa revised schedule for Residuals Upgrade Design contract.5