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1 Dennis Daughters, P.E. City Engineer / Director of Engineering, City of Sarasota Lido Key Beach Renourishment Program & New Pass Dredging.

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Presentation on theme: "1 Dennis Daughters, P.E. City Engineer / Director of Engineering, City of Sarasota Lido Key Beach Renourishment Program & New Pass Dredging."— Presentation transcript:

1 1 Dennis Daughters, P.E. City Engineer / Director of Engineering, City of Sarasota Lido Key Beach Renourishment Program & New Pass Dredging

2 2 Location, Location, Location Lido Key New Pass Big Sarasota Pass

3 3 Presentation Content Lido Key Beach Erosion Control Projects Presentation Content History of Island Long Range Master Plan Projects 1997 New Pass Dredging 1998 Restoration 2001 Interim Restoration 2002 New Pass Dredging 2004 Federal Nourishment

4 4 History of Island New Pass formed in 1848 by hurricane. New Pass formed in 1848 by hurricane. Initial dredging of New Pass in Initial dredging of New Pass in Group of small detached mangrove islands, Cerol Isles. Group of small detached mangrove islands, Cerol Isles. filled by John Ringling in the 1920s. filled by John Ringling in the 1920s. City purchased 16.2 acres at mid-section in City purchased 16.2 acres at mid-section in built a public spa and casino. built a public spa and casino. County purchased 153 acres at South Lido area in County purchased 153 acres at South Lido area in dedicated South Lido Park to be preserved in a natural state. dedicated South Lido Park to be preserved in a natural state. City purchased 60.9 acres at north section in City purchased 60.9 acres at north section in dedicated North Lido Park to be preserved in a natural state. dedicated North Lido Park to be preserved in a natural state.

5 5 Long Range Master Plan City obtained services of Coastal Planning & Engineering (CPE) in January 1990 to develop long-range beach management and erosion control plan. City obtained services of Coastal Planning & Engineering (CPE) in January 1990 to develop long-range beach management and erosion control plan. CPE completed Long Range Master Plan in January CPE completed Long Range Master Plan in January Plan examined 7 erosion control alternatives, a buy-out/ retreat approach, 4 renourishment options and an offshore breakwater. Plan examined 7 erosion control alternatives, a buy-out/ retreat approach, 4 renourishment options and an offshore breakwater. Plan recommended renourishment of 9,000 feet of beach (from R-35 to R-44) at minimum width of 75 feet. Plan recommended renourishment of 9,000 feet of beach (from R-35 to R-44) at minimum width of 75 feet.

6 6 Inlet Management Plans FDEP required City to develop Inlet Management Plan for both, New Pass and Big Sarasota Pass. FDEP required City to develop Inlet Management Plan for both, New Pass and Big Sarasota Pass. City obtained services of CPE in June 1992 to develop both Inlet Management Plans. City obtained services of CPE in June 1992 to develop both Inlet Management Plans. CPE completed New Pass Inlet Management Plan in June 1993 and Big Sarasota Pass in September CPE completed New Pass Inlet Management Plan in June 1993 and Big Sarasota Pass in September Both Plans included Sand Sediment Budget. Both Plans included Sand Sediment Budget. New Pass IMP recommended continual periodic dredging of New Pass channel. Big Pass IMP did not. New Pass IMP recommended continual periodic dredging of New Pass channel. Big Pass IMP did not. Town of Longboat Key disagreed with Sand Budget. Town of Longboat Key disagreed with Sand Budget. Neither Plan approved by FDEP. Neither Plan approved by FDEP.

7 7 Federal maintenance began in Federal maintenance began in Eight Projects done. Eight Projects done. Dredging has occurred about every 4-5 years. Dredging has occurred about every 4-5 years. 2 ¼ million cubic yards dredged in last 35 years (8 projects). 2 ¼ million cubic yards dredged in last 35 years (8 projects). Average 280,000 c.y. per dredging. Average 280,000 c.y. per dredging. Year Quantity (c.y) , , , , , , , ,000 New Pass Dredging Project

8 8 Cubic Yards Dredged

9 9 LONGBOAT KEY LIDO KEY 1982, 1985, 1991, 1997 CHANNEL ALIGNMENT 1964, 1970, 1974, 1977 CHANNEL ALIGNMENT

10 New Pass Dredging New Pass Dredging Project - USACE New Pass Dredging Project - USACE Hendry Dredging began June 15, 1997 Hendry Dredging began June 15, 1997 Placed 163,000 cubic yards (50% of total) on north part of Lido Beach Placed 163,000 cubic yards (50% of total) on north part of Lido Beach Completed work in September 1997 Completed work in September 1997 No local funds involved No local funds involved

11 Restoration Project City/State Funded Project City/State Funded Project Applied for grants for many years Applied for grants for many years Received 25% State grant in May 1997 Received 25% State grant in May 1997 Placed 285,000 cubic yards in May 1998 Placed 285,000 cubic yards in May 1998 Total cost = $3.41 million. ($12.00/Cubic Yard) Total cost = $3.41 million. ($12.00/Cubic Yard) Protection from Earl, Georges & Harvey Protection from Earl, Georges & Harvey

12 12 Hopper-type Dredge Weeks Marines operation during 1998 Lido Beach Restoration Project

13 Interim Lido Restoration Severe erosion incurred in last few years ELegance condominium lost almost all of their newly constructed dune

14 14 Southern Lido Key Serious erosion South end of 1998 Restoration Project

15 15 Buildings were in jeopardy 2001 Interim Lido Restoration

16 Interim Lido Restoration Benefits Benefits Storm protection - private & public Storm protection - private & public Recreational - longitudinal beach access Recreational - longitudinal beach access Economic - increased tourist tax dollars Economic - increased tourist tax dollars Environmental - increased areas for vegetation, sea turtle nesting, etc. Environmental - increased areas for vegetation, sea turtle nesting, etc.

17 Interim Lido Restoration Ebb shoal extends south Severe erosion and exposure of Lido Harbor and Lido Harbor South North Note gray sand from 1998 Project Big Sarasota Pass

18 18 Beach Fill Comparison Beach fill for Feeder Beach concept Beach fill for Groin concept St. Armands Key Lido Key

19 Interim Lido Restoration Before After Pool

20 Interim Lido Restoration During

21 21 Limits of Projects 1997 Project limits

22 New Pass Dredging Sarasota County is Local Sponsor. Sarasota County is Local Sponsor. City/County worked together to obtain funding for USACE. City/County worked together to obtain funding for USACE. Congressman Dan Miller was of great assistance in getting approval. Congressman Dan Miller was of great assistance in getting approval. City of Sarasota and Town of Longboat Key will share the sand on 50/50 basis. City of Sarasota and Town of Longboat Key will share the sand on 50/50 basis.

23 23 USACE wanted to dredge in this location. USACE is now going to dredge in this location, as they did the last 4 times. Normal shoreline when dredging is straight out.

24 New Pass Dredging USACE awarded contract on 30 September 2002 to Goodloe Marine, Inc. USACE awarded contract on 30 September 2002 to Goodloe Marine, Inc. Bid amount for New Pass project is $2,231,050. Gordon Pass will be extra $$. Bid amount for New Pass project is $2,231,050. Gordon Pass will be extra $$. Pre-construction meeting was held on November 1, Pre-construction meeting was held on November 1, Construction to began 15 December Construction to began 15 December Completed Lido portion on 1 Febr Completed Lido portion on 1 Febr

25 New Pass Dredging Water Surface Existing Bottom 10 foot Required Depth With 2-foot allowable overdepth 100 feet inside Pass 150 feet outside Pass Material to be removed Existing Waterway Typical Cross-section

26 26 White Sand Issue Gray sand compared to natural beach color Some people dont like gray sand.

27 27 White Sand - Status Sand dredged from New Pass is white sand. USACE included two options in their contract for New Pass Dredging with City to pay difference. Stock pile 123,000 cy at R-35.5 to R-38.5 or, Spread 123,000 cy from R-35.5 to R-44. Citys actual share will be $98,050 plus 7.5% Admin. costs. White sand was spread from north of Holiday Inn to Big Sarasota Pass, if there is sufficient sand.

28 White Sand Project Beach Cross-section Lido Resort Or Condo Existing Gray Sand Beach Move 2 of gray sand to waters edge Place 2 layer of white sand Move 2 of gray sand to waters edge White sand layer Water surface Elevation +5.0

29 29 Federal Nourishment Project Initially authorized by Congress - December 31, Initially authorized by Congress - December 31, De-authorized by USACE - January 1, De-authorized by USACE - January 1, Approval for Reconnaissance Study Approval for Reconnaissance Study Reconnaissance Study completed - January Reconnaissance Study completed - January Feasibility Cost Sharing Agreement Feasibility Cost Sharing Agreement Signed by City - July 20, Signed by City - July 20, Signed by USACE - July 20, Signed by USACE - July 20, Re-authorized by Congress - August 7, 1999 Re-authorized by Congress - August 7, /35 of initial project and 50 year commitment. 65/35 of initial project and 50 year commitment.

30 30 Federal Nourishment Project Feasibility Study began - November Feasibility Study began - November $700,000 shared 50/50. $700,000 shared 50/50. Now 95% complete. Now 95% complete. Submit to Congress January Submit to Congress January Selected Plan – 1,075,000 cy and 3 groins. Selected Plan – 1,075,000 cy and 3 groins. Design / Construction Phase - Year 2004 Design / Construction Phase - Year 2004 $12.95 million with Citys share about 37.3%. $12.95 million with Citys share about 37.3%. State grant program may fund 50% of Citys share. State grant program may fund 50% of Citys share. Renourishment Phase - Year 2008, 2012, Renourishment Phase - Year 2008, 2012, $5.3 million to be shared 50/50. $5.3 million to be shared 50/50.

31 31 Federal Nourishment Project New Pass Big Sarasota Pass St. Armands Circle Sand Placement 3 Groins

32 32 TDT Funding Commitments Original 2% levy: $300,000/year (more or less) Additional 1% levy: $1.1 million in FY 97/98 $304,000 in FY 98/99 $146,000 for 6 years FY98/99 to FY 03/04 $1.1 million in FY 01/02

33 33 Funding Grants The City of Sarasota, with great assistance from Lido Key residents/owners, has pro-actively obtained additional state and federal grants. The 1998 project required 75% local funds. The 2001 & 2002 projects required 53% local funds. The 2004 project will require 19% local funds.

34 34 Revenue $7.1 million from County TDT $3.4 million from State DEP $0.4 million from Federal

35 35 City of Sarasota Thanks You Enjoy your Lido Beach ! Lido Key Beach Maintenance Program & New Pass Dredging


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