HomeMy WebLinkAboutPhase IIB CWMP Update to Board of Selectmen August 7, 2013_201401230916435887Board of Selectmen
Town Administration
WOODARD & CURRAN
PHASE IIB / CWMP UPDATE - QUARTERLY UPDATE
August 7, 2013
Phase IIB – Downtown Sewer Rehab
Proposed Fall 2013 Work Plan
–Ash Lane / Ash Street
•Sewer
–AcademyLane / Gay Street
•Sewerand Water
–FinishFair Street Pavement
–Broad Street /Quince Street
•Dewatering24/7
•Shut Down - ChristmasTree Lighting
•Shut Down - ChristmasStroll
–Paving and CleanUp
–RemobilizeFinal Paving
Phase IIB – Downtown Sewer Rehab
Fall ProjectContractor Discussions
•ImprovedClean-Up
•Better Outreach Communication
•Timelines, Road Closings, Schedules (Police Twitter, Ping Four)
•CoordinationWith PLUS
•CoordinationWith SteamshipAuthority
–Broad Street
•CoordinationWith IslandActivities
–Fall Holiday Activities
–Weddings
–Christmas Activities
–Spring Activities
•Daffodil Days
Phase IIB – Downtown Sewer Rehab
Project Changes
–Jetties Beach – IdentifiedMajor I/I Issues
•Four Manhole/Pipe Replacements
–Madison Alley– IdentifiedMajor Pipe Issue
•Pipe BurstNewPipe
–Broad Street – Alignmentof Utilities
•SewerLocationDifferent
•NumerousConflicts WithOriginal Plans
–Utilities Not Shown
•ConductedTestPit Research
•ConductedRe-Design
–Full Width Pavementfor Many of the Streets
Phase IIB Site
Map
CWMP Update Status
Progress to Date
–DelineatedUpdatedMap of Needs / Study Areas
•CoordinatedTown-wideEfforts
–Board of Health
•Reviewof Records2004 to Present
–Hummock Pond Estuary Study
•Implementation& Schedule
–Final Summer / WinterFlow Estimates
•All Study / Needs Areas / Town SewerDistrictBuildOut
Study Area - Needs Area Update Map
Town Sewer DistrictUpdate
Town Sewer District (TSD)
–UtilizedTown’s SewerUser BillingRecords from GIS
Results
–Users NOT ReceivingBills
•Lost Revenue
•NitrogenLoadIssues in NantucketHarbor
–Town Evaluatedand Corrected BillingData
•DevelopingPlan to Address – SPWG Through BOS
•RevisedBuildOut Flows
•Workingwith SMAST toRebalance MEPNitrogenLoad
•Unconnected Parcels - ~324
–Means to Address Through LocalRegulation69.00
Town Sewer
DistrictMap
Capacity AnalysisUpdate
Surfside Wastewater Treatment Facility
–Designof WWTF – 5.8 MGD
–GroundwaterDischargePermit - 3.5MGD
–On-GoingDueDiligenceto Verify
•Hydraulic Capacity
•BiologicalTreatmentCapacity
•GroundwaterDisposalBedCapacity
–MassDEP Meeting for Surfside Bed Reload
–Existing and Future Flows
•IncorporatedAll Study and Needs Areas
•IncludedExisting and Full Build-Out inTSD
•Surfside WWTF CanAccommodate WithinExisting Permit
•Need Additional400,000 GPD Discharge
CWMP Update - On-Going Work
–HummockPondEstuary
–Sesechacha Pond
–Total MaximumDailyLoads(TMDLs)
•NantucketHarbor
•Polpis Harbor
•MadaketHarbor
•LongPond
–Model Run Scenarios
–Board of Health
–ACO
–Stormwater
–Fertilizer
–FAA Site
–Town Sewer District
–Island-Wide Water
Quality Testing
–Alternatives Discussion
–Alternatives Analysis
–Ocean Outfall
Moving Forward
CWMP Update
–Coordinate Efforts Through DPW
–Continue withMassDEP Approved Scope of Work
–Coordinate Efforts WithSMAST
•2013Island-Wide Water Quality Sampling Program
•Sesechacha Pond Study
•Hummock Pond Estuary Study
•Additional Model Run Scenarios
–Alternatives Evaluation
–Stormwater Evaluation
–Fertilizer Evaluation
–Surfside WWTF Evaluation
•Surfside Discharge Beds Capacity Analysis
–Energy Initiative
–Continue Public Outreach
Required Town Actions
•Town SewerDistrictEvaluation
–Sewer Connection Policy
–Local Regulation 69.00 - Implement and Enforce
•Financing(Future)
–Appropriate Policies
•FertilizerManagement
–Education and Implementation
•Septic ACOProgram
–Educational and Implementation
–Needs Areas Expansion
•StormwaterManagement
–Assess Options and Costs
•PublicOutreach
–Consensus Building
QUESTIONS & ANSWERS
WOODARD & CURRAN
PHASE IIB/ CWMP UPDATE – QUARTERLY UPDATE
August 7, 2013