Final - Massachusetts Water Resources Authority

S. 146 Inspection of Deer Island Cross Harbor TunnelsProject Purpose and Benefits Contributes to improved public health Provides environmental benefits Extends current asset life Results in a net reduction in operating costs Improves system operability and reliabilityMaster Plan Project 2008 Priority Rating 2 (see Appendix 3)To inspect, design, and repair MWRA deep rock tunnels to ensure proper wastewater system operation.Project History and BackgroundThe MWRA sewer system includes three deep rock tunnels that carry wastewater from the headworks to the DITP.The MWRA currently does not have the technology and capability of inspecting deep rock tunnels.ScopeSub-phaseTunnel ShaftRepairs Design &ConstructionScopeThe MWRA sewer system includes three deep rock tunnels that carry wastewater fromthe headworks to the DITP. The MWRA currently does not have the technology andcapability of inspecting deep rock tunnels. This subphase includes inspection, design, andconstruction of repairs.Expenditure Forecast (in $000s) and Project StatusTotalBudgetPaymentsthru FY10RemainingBalanceFY11 FY12 FY09-13 FY14-18 BeyondFY18$5,000 $0 $5,000 $0 $0 $0 $5,000 $0ProjectStatus11/100.0% Status as % is approximation based on project budget and expenditures.Changes to Project Scope, Budget, and ScheduleProject Cost Scheduled Completion Date FY09-13 SpendingFY11 FY12 Chge. FY11 FY12 Chge. FY11 FY12 Chge.$5,000 $5,000 $0 Jun-17 Jun-17 None $0 $0 $0Explanation of ChangesN/ACEB ImpactNo additional impacts identified at this time.Interception and Pumping - 42