government of barbados inter-american development bank coastal infrastructure programme
DESCRIPTION
Government of Barbados Inter-American Development Bank Coastal Infrastructure Programme Addressing the Challenge of Coastal Erosion Prepared by Baird and Associates and the Coastal Zone Management Unit Presented by Dr. Leo Brewster Director, CZMU. The Locations. - PowerPoint PPT PresentationTRANSCRIPT
BairdBaird
Government of BarbadosInter-American Development Bank
Coastal Infrastructure ProgrammeAddressing the Challenge of Coastal Erosion
Prepared by Baird and Associates
and the Coastal Zone Management Unit
Presented byDr. Leo BrewsterDirector, CZMU
BairdBaird
The LocationsThe Locations
Rockley to Drill HallRockley to Drill Hall Crane BeachCrane Beach Holetown Beach Holetown Beach Welches BeachWelches Beach Woman’s BayWoman’s Bay Holetown LagoonHoletown Lagoon Tent BayTent Bay Walker’s SavannahWalker’s Savannah
BairdBaird
This Presentation will feature two of This Presentation will feature two of these locationsthese locations
Welches BeachWelches Beach Rockley to Coconut CourtRockley to Coconut Court
BairdBaird
Welches Beach
Project ObjectivesProject Objectives
Minimize overtopping of roadwayMinimize overtopping of roadway
Expand beach if possibleExpand beach if possible
BairdBaird
Project LocationProject Location
Welches beach is located at Welches in Christ Church Welches beach is located at Welches in Christ Church on the south side of Highway 7, approximately 0.5 km west of Oistinson the south side of Highway 7, approximately 0.5 km west of Oistins.
BairdBaird
The ProblemThe Problem
During high wave energy events, waves either: During high wave energy events, waves either:
(1) run along the undercut sea cliff, increasing in height as they (1) run along the undercut sea cliff, increasing in height as they move inshore at the window to the sea at Cachel causing move inshore at the window to the sea at Cachel causing overtopping. overtopping.
BairdBaird
(2) The second area susceptible to overtopping is located at the (2) The second area susceptible to overtopping is located at the east end of the Welches “Window-to-the-Sea”. The seawall east end of the Welches “Window-to-the-Sea”. The seawall terminates immediately west of the problem area (the blue wall in terminates immediately west of the problem area (the blue wall in the photo is located on the north side of Highway 7).the photo is located on the north side of Highway 7).
The ProblemThe Problem
BairdBaird
ENVIRONMENTAL INVESTIGATIONSENVIRONMENTAL INVESTIGATIONS UNDERTAKENUNDERTAKEN
Benthic SurveysBenthic Surveys Coastal Vegetation SurveysCoastal Vegetation Surveys Marine Water QualityMarine Water Quality Turtle NestingTurtle Nesting
BairdBaird
SOCIAL IMPACT CONSIDERATIONS
Stakeholder Meetings held pre, during and post Stakeholder Meetings held pre, during and post constructionconstruction
Social survey undertaken post construction.Social survey undertaken post construction.
BairdBaird
PROPOSED COMPONENTS OF PROJECT
Construct segmented Groyne to East of SiteConstruct segmented Groyne to East of Site 5500 Cubic Meters of Sand west of Eastern Groyne5500 Cubic Meters of Sand west of Eastern Groyne Construct Concrete Outlook Construct Concrete Outlook Refurbish Existing Groyne and extend by 10mRefurbish Existing Groyne and extend by 10m Construct 40m Groyne to West of SiteConstruct 40m Groyne to West of Site 1500 1500 Cubic Meters of Sand west of Eastern GroyneCubic Meters of Sand west of Eastern Groyne
BairdBaird
Final Design: Main ProjectFinal Design: Main Project
BairdBaird
Project SummaryProject Summary
Contract Award Price Bds. $2,590,830.00 VAT Contract Award Price Bds. $2,590,830.00 VAT InclusiveInclusive
Actual Construction Cost Bds. $2,772,093.99 VAT Actual Construction Cost Bds. $2,772,093.99 VAT Inclusive Inclusive
Construction Time 10 months Construction Time 10 months
BairdBaird
Rockley Beach Project Activities Physical Model & Coastal AnalysesPhysical Model & Coastal Analyses
Environmental AssessmentEnvironmental Assessment
Stakeholder ConsultationStakeholder Consultation
Permit ApplicationsPermit Applications
DesignDesign
Contract DocumentsContract Documents
Town Planning ApprovalTown Planning Approval
IADB Washington ReviewIADB Washington Review
Bidding and Approvals ProcessBidding and Approvals Process
Construction and Construction ObservationConstruction and Construction Observation
BairdBaird
Selection of Headland/Beach
Headland/Beach prevents loss in most conditionsHeadland/Beach prevents loss in most conditions
Beachfill only would experience rapid loss of sand and Beachfill only would experience rapid loss of sand and would not provide a reliable base for the walkwaywould not provide a reliable base for the walkway
Breakwaters would prevent natural supply from offshore Breakwaters would prevent natural supply from offshore (and result in increased wave setup)(and result in increased wave setup)
BairdBaird
ENVIRONMENTAL INVESTIGATIONSENVIRONMENTAL INVESTIGATIONS UNDERTAKENUNDERTAKEN
Benthic SurveysBenthic Surveys Coastal Vegetation SurveysCoastal Vegetation Surveys Marine Water QualityMarine Water Quality Turtle NestingTurtle Nesting
BairdBaird
SOCIAL IMPACT CONSIDERATIONS
Stakeholder Meetings held pre, during and post Stakeholder Meetings held pre, during and post constructionconstruction
Social survey undertaken pre construction.Social survey undertaken pre construction.
BairdBaird
BairdBaird
Project SummaryProject Summary
Contract Award Price Bds. $18,398,830.00 VAT Contract Award Price Bds. $18,398,830.00 VAT InclusiveInclusive
Actual Construction Cost (to date) Bds. $16,474,382.26 Actual Construction Cost (to date) Bds. $16,474,382.26 VAT Inclusive (Clean up and retention fee still VAT Inclusive (Clean up and retention fee still outstanding)outstanding)
Construction Time 18 months Construction Time 18 months
BairdBaird
Coastal Infrastructure Project BenefitsCoastal Infrastructure Project Benefits
Quality Shoreline InfrastructureQuality Shoreline Infrastructure Greatly Greatly Improved BeachesImproved Beaches and and Public AccessPublic Access (Welches, Holetown and Rockley) (Welches, Holetown and Rockley)
Environmental ImprovementsEnvironmental Improvements (turtle nesting, water filtration)(turtle nesting, water filtration)
Generational CapacityGenerational Capacity (Quality, World Class, Maintained)(Quality, World Class, Maintained)
BairdBaird
Project BenefitsProject Benefits ProtectsProtects Large Gov’t Large Gov’t InvestmentInvestment SignificantSignificant Long Term Cost Long Term Cost SavingsSavings Maintains a Maintains a Valuable Public ResourceValuable Public Resource in in
excellent conditionexcellent condition Maintains Maintains SafetySafety of Facility of Facility