 Prepared for  City of Palm Coast, Florida  April 28, 2015 Stormwater Detention Facilities for City-Wide Stormwater Management Master Plan

Singhofen & Associates, Inc.April 28, 2015  To anticipate the need for additional services and infrastructure to provide opportunities for mixed use development with goods, services, and employment. Goal 1 Expansion

Singhofen & Associates, Inc.April 28, 2015  Section Numbers  Sections Already Modeled  Sections Being Modeled City of Palm Coast Modeling Status

Singhofen & Associates, Inc.April 28, 2015 City of Palm Coast Modeling Status

Singhofen & Associates, Inc.April 28, 2015  Section 35  High water levels due to  Constrictions at London Drive, US 1 (to Hulett Branch)  I-95 (to Mulberry Creek)  Home flooding predicted in < 1 % of homes (all in Bird of Paradise area)  Number of homes below City standard for 100-year event = 11 %  Secondary drainage deficiencies - 10 year event = 2 Modeling Results

Singhofen & Associates, Inc.April 28, 2015 Section 35 (“B” Section) – Level of Service Deficient secondary roads = 2 Secondary drainage deficiencies

 “B” Section (Section 35) Improvements  Ditch and Pipe Modifications  (Bunker Hill Drive to Burnaby Lane) 2014 Program Results

Singhofen & Associates, Inc.April 28, 2015  Section 37  High water levels due to  Constrictions at London Drive, US 1 (to Hulett Branch)  I-95 (to Mulberry Creek)  No home flooding predicted  Number of homes below City standard for 100-year event = 9 %  Secondary drainage deficiencies - 10 year event = 6 Modeling Results

Singhofen & Associates, Inc.April 28, 2015 Section 37 (“L” Section) – Level of Service Deficient secondary roads = 6 Secondary drainage deficiencies

 “L” Section (Section 37) Improvements  Ditch and Pipe Modifications  (Lindsay Drive to Lancelot Drive) 2015 Program Results

Singhofen & Associates, Inc.April 28, 2015 Sections 35 & 37 – Recommended Capital Improvements Possible Detention Storage Locations ~100-acft required in total

Singhofen & Associates, Inc. April 28, 2015  System Performance Evaluation For Homes:  Home flooding evaluated relative to base flood (i.e., 100-year storm)  City has required 1 foot of freeboard above 100-year elevation Level of Service Evaluations Freeboard

Singhofen & Associates, Inc. April 28, 2015 Model Results  Level of Service Improvement :  Homes below 100-year City standard reduced by 63 %  Homes remaining below 100-year City standard = 4 %  All secondary deficiencies eliminated

Singhofen & Associates, Inc. April 28, 2015 Recommended Improvement Plans based on Modeling Results for Section 35 and Section 37  Section 35 Improvements:  Ditch and Pipe Improvements  Design Completed  Construction Completed  Section 37 Improvements:  Ditch and Pipe Improvements  Design Completed  Construction is 50% Complete  Floodplain Storage Creation  Proposed areas include three general locations along the Belleaire canal waterway in Section 37.  Design, Permitting, and Construction Services proposed.

Singhofen & Associates, Inc. April 28, 2015 Next Step for Implementation Section 37 Floodplain Storage Permitting and Design Services  Scope of Services is in two Phases:  Phase 1:  Initial survey, environmental, and geotechnical services  Provide preliminary layout of proposed design (30% Plans)  Phase 2:  Finalizing proposed design  Prepare construction plans and permitting Staff recommends approving a work order for Section 37 Floodplain Storage Permitting and Design

Singhofen & Associates, Inc. April 28, 2015 QUESTIONS?