Recent Storm Impacts & Resiliency Planning - 12-12-22Recent Storm ImpactsandResiliency PlanningAtlantic Beach, FL
Discussion Points•Ian & Nicole – Local Impacts•Vulnerability Assessment & Adaptation Plan•Ongoing & Planned Resiliency Related Capital Projects•Beach Renourishment•Schedule•Parking Counts
Mayport Water LevelsRecent StormsStorm DateHigh Water @ MayportExpected Tide at High WaterPeak Storm SurgeMatthew Oct 7, 2016 5.1’ 1.2’ 4.7’Irma Sep 11, 2017 5.6’ 0.8’ 6.4’Ian Sep 29, 2022 4.4’ 2.6’ 3.7’TS Nicole Nov 10, 2022 5.5’ 2.6’ 3.8’If Irma had hit during a King Tide at high tide, peak water levels could have been much higher
Storm SurgeIf Irma had hit during a King Tide at high tide, water levels could have been up to 7’IrmaNicole
Atlantic Blvd Water Levels Recent StormsStorm DateHigh Water @ Atlantic BlvdMatthew Oct 7, 2016 5.1’Irma Sep 11, 2017 5.4’Ian Sep 29, 2022 4.5’TS Nicole * Nov 10, 2022 5.6’* Estimated
Take Home Notes•The west side of the City is vulnerable to coastal flood events•Just because it is a Tropical Storm, it doesn’t mean that coastal flooding impacts will be less than a Hurricane•Both Nicole & Ian had a limited amount of rain. If we had received predicted rainfall, there would likely have been extensive street flooding and potential home flooding•Timing is everything•Expect flood risk to be greater in the future
TS Nicole – City HallNormal Water Level TS Nicole Water Level
TS Nicole – City Hall
TS Nicole – Mayport Boat Ramp
TS Nicole – Singleton’s
TS Nicole – Buccaneer LS
TS Nicole – Buccaneer LS
TS Nicole – Buccaneer LS Area
TS Nicole – Buccaneer LS Area
TS Nicole – Buccaneer LS Area
TS Nicole – West Plaza @ Carnation
TS Nicole – W. Plaza @ Tulip
TS Nicole – W. Plaza @ Tulip
TS Nicole – Dutton Island Entrance
TS Nicole – Dutton Island Entrance
TS Nicole – Tideviews
TS Nicole – Tideviews
3rdSt Beach AccessDuring Ian
3rdSt Beach AccessBefore Nicole
3rdSt Beach AccessAfter Nicole
Vulnerability Assessment•Identified critical assets & properties subject to impacts from future Sea Level Rise•Completed in 2019•Updated in 2021 to capture Utility service area outside of the City limits•Will be updated again using grant funding to:•Meet new FDEP requirements•Include Marsh Baseline Survey
Planning Horizon•Present Day•For Baseline Conditions•25 Years – 2044•Relatively High degree of certainty in SLR•Life of mortgage•50 Years – 2069•Economic period for major infrastructure & structures•100 Years – 2019•Long‐range adaption planning
Vulnerability Assessment
Property
Critical Facilities
Take Home Points•Impacts from SLR will affect the entire community•If SLR predictions are correct, expect:•More areas will be affected by routine High Tide Flooding•An Increase in extent of areas that currently flood•More Homes & Businesses at risk that are not at risk now•Localized Flooding from rainfall to increase and be more persistent•Interactive Map located at:•https://coab.maps.arcgis.com/apps/View/index.html?appid=c9bbc440aa444ef684aa819cbe549ef2
Adaptation Plan•Initial effort completed 2021•To be updated in 2023 to include additional data (grant funded)•Take results of Vulnerability Assessment and put a plan in place:•Protection•Accommodation•Strategic Relocation•Avoidance•Procedural
Recommended ActionsRecommendation Action Timeframe for Initiation Review all capital projects in context of adaptation Incorporate into project planning procedures Immediate Building and zoning code review Initiate review process and produce report of recommended actions Near-Term Policies to encourage homeowner resiliency projects Establish policies Mid-Term Reinforce value of trees for absorbing runoff Develop educational materials; coordinate with COJ efforts Near-Term Real estate disclosures Initiate discussions with Property Appraiser and develop approach for implementation Mid-Term Education and Public Engagement Tools Develop/adapt educational materials Near-Term Low maintenance buffers on City property Establish policy Immediate Marsh restoration partnering w/ COJ, JAXPORT, USACE Begin planning, discuss with relevant agencies, determine funding sources Long-Term Work with COJ on vulnerability outreach program Begin coordination and development of outreach materials Mid-Term Invasive species mapping in riparian areas Complete map and develop eradication plan Near-Term Maintain federal authorization for beach renourishment Maintain contact with USACE, COJ and FDEP to assure authorization is maintained Ongoing Incorporate EPA Green Streets into planning & projects Incorporate in to Complete Streets program Near-Term Seek funding to phase out septic tanks Initiate discussions with COJ, FDEP and SJRWMD to identify funding opportunities Ongoing Incentivize LID practices Develop LID guide and update code as necessary to incentivize Near-Term Review minimum off-street parking requirements Review and update applicable sections of code Near-Term Revise minimum FFEs in exposed areas Evaluate impact of change and implement code change Mid-Term
Recommended ActionsRecommendation Action Timeframe for Initiation 25-Year plan for SLR protection Commission evaluation and present options to the community Mid-Term Marsh baseline study Commission study Near-Term Recommendation Action Timeframe for Initiation Evaluation of current CIPs Initiate review of projects Near-Term 50-year drainage plan Engage consultant to develop 50-year plan; incorporate findings in to the CIP Long-Term Recommendation Action Timeframe for Initiation Rank roads in pavement management plan Review & update pavement management plan Near-Term Improve resilience of vulnerable roadways prior to repaving or making major improvements Evaluate roadway projects as they arise Ongoing Minor arterial roadway evaluation Evaluate in response to inspections and complaints Ongoing Atlantic Boulevard and Mayport Road resiliency Coordinate w/ FDOT Ongoing Areas West of Mayport RdMajor DrainagewaysRoadways
Recommendation Action Timeframe for Initiation Develop plan for exposed facilities with ranking >= 15 Complete plan; design and schedule recommended improvements Near-Term Develop plan for exposed facilities with ranking <15 Complete plan; design and schedule recommended improvements Mid-Term Recommended ActionsCritical Utility InfrastructureCritical Public FacilitiesRecommendation Action Timeframe for Initiation Evaluate and upgrade exposed infrastructure w/ ranking >=15 Evaluate and implement recommended improvements Near-Term Evaluate and upgrade exposed infrastructure w/ ranking <15 Evaluate and implement recommended improvements Mid-Term
Resiliency Related Capital ProjectsPublic UtilitiesPROJECT DESCRIPTION 2023 2024 2025 2026 2027 TOTAL WTP #1 Modernization ‐ Construction$992,175 $992,175 WTP #2 Modernization ‐ Design & Eng $150,013 $150,013 WTP #4 ‐ Abandon Wells$100,000 $100,000 WTP #2 Modernization ‐ Construction $1,300,000 $1,300,000 Retrofit Medium Priority Wells Vulnerable to Flooding$150,000 $150,000 WTP #2 ‐ New Raw Water Ground Storage Tank$500,000 $500,000 WTP #3 Modernization ‐ Dsn, Eng & Construction$850,000 $850,000 Wellfield Evaluation$150,000 $150,000 2,700 LF of 12" WM ‐ NS Mayport Inter‐Tie Project$735,862 $735,862 Retrofit 18 Medium Priority LS Vulnerable to Flooding$150,000 $150,000 Septic to Sewer 14 homes in Marsh Oaks (Begonia, Tulip)$350,000 $350,000 Septic to Sewer Remainder of Marsh Oaks$350,000 $350,000 Annual Project Resiliency Related Expenditures $2,128,050 $1,300,000 $500,000 $1,350,000 $500,000 $5,778,050
Resiliency Related Capital ProjectsPublic WorksPROJECT DESCRIPTION 2023 2024 2025 2026 2027 TOTAL Public Works Building Rehabilitation ‐ Construction$950,000 Aquatic Gardens‐ Phase I $2,390,807 $2,390,807 Aquatic Gardens‐ Phase II $2,500,000 $2,500,000 $5,000,000 Sherman Creek Culverts‐ Seminole, Plaza, & 11th St $1,200,000 $1,200,000 Howell Park & Sherman Creek‐ Dredging $1,000,000 $1,000,000 $2,000,000 9th/10th/11th/12th Streets‐Phase I$1,100,000 $1,100,000 Ahern, 1st, 2nd & 3rd St‐ Drainage System & Roadway Rehab $2,000,000 $2,000,000 9th/10th/11th/12th Streets‐Phase II$1,200,000 $1,200,000 Johansen Park‐ Culvert Replacement$450,000 $450,000 Stanley Rd Area‐ Enlarge Existing Storm Sewer $650,000 $650,000 Critical Public Facilities‐ High Exposure Improvements $80,000 $50,000 $50,000 $50,000 $230,000 Critical Public Facilities ‐ Medium Exposure Evaluation $25,000 $25,000 Critical Public Facilities‐ Medium Exposure Improvements $20,000 $20,000 $20,000 $60,000 50‐Year Drainage Plan‐ Evaluate Major Drainageways $100,000 $100,000 25‐Yr Plan for SLR Protection ‐ West of Mayport Rd $100,000 $100,000 Vulnerable Roadway Segments ‐ Protect from SLR$1,000,000 $1,000,000 Annual Projected Resiliency Related Expenditures $3,420,807 $4,625,000 $3,070,000 $4,670,000 $2,670,000 $17,505,807
Beach Renourishment ScheduleTask DateStart design process Jan 2023Put project out to bid Oct 2023Award project to contractor Dec 2023Start beach renourishment Feb 2024Complete construction Jun 2024• ~1.1 million cubic yards of sand to restore the beach• Sand will come from an offshore borrow area• Can’t start in the winter because of weather•Federal Project expires in 2028
Beach Parking•Minimum Public access required (parking) for cost‐share funding• Cost‐share agreement between FDEP and COJ, not Atlantic Beach• Last count, conducted by staff, was in 2021 and sent to FDEP• COAB meets public access requirements to maximize cost‐share $
Excerpt from Parking Count