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Agenda 06/23/2015 Item #16A216/23/2015 16.A.21. EXECUTIVE SUMMARY Recommendation to review the April 2015 beach survey results and endorse a staff recommendation to not renourish the Vanderbilt, Pelican Bay, Park Shore or Naples beaches in the Fall (November) of 2015. OBJECTIVE: Obtain concurrence and endorse a recommendation that no beach renourishment is required in FY2015/16 for the Vanderbilt, Pelican Bay, Park Shore or Naples beaches based on the April 2015 beach survey. CONSIDERATIONS: The results of the annual beach surveys taken earlier this month have just been received. Based on the survey results, staff is recommending NO beach renourishment this November 2015. Staff is also recommending continued monitoring of these beaches over the next year. If significant hot spots develop during the year, then targeted renourishment can occur. This recommendation is contingent on Humiston and Moore's review and confirmation of the beach width/fill analysis conducted by county staff to determine if beach renourishment is necessary in November 2015. Should Humiston and Moore's review and recommendations not corroborate staff's findings, this item will be resubmitted to the Board with revised recommendations. Vanderbilt Beach When compared to the 100 foot design standard plus 3 years of advanced renourishment, the Vanderbilt average beach width is 115 feet and has an excess volume over the advanced renourishment requirements of 11,340 CY's. It has 2 locations where the advanced fill requirements are not met; R -25 requires approximately 1.650 CY's to fill the advanced renourishment template and R -27 requires 900 CY's to fill its advanced renourishment template. These volumes are relatively insignificant and will not be able to justify a renourishment event. Also, please remember that the Vanderbilt beach was essentially renourished to file 6 years of advanced renourishment standard in 2013 as a result of TS Fay's damages. Park Shore Beach The Park Shore beach has a design standard of 85 feet and currently averages just over 100 feet in width with an excess of 15,760 CY's of fill above the 3 vear advanced fill requirements. It has 3 locations where it does not meet the advanced fill requirements; R -44 would require approximately 2,150 CY's to meet advanced renourishment requirements, R -46 would require 2,300 CY's to meet advanced renourishment requirements and R -49 would require an additional 2,500 CY's for advanced renourishment. These volumes are also relatively insignificant. Pelican Bay Beaches The Pelican Bay beaches were also surveyed and analyzed. The Pelican Bay beaches encompass the area between R -31 to R -37. These beaches have a 100 foot design standard and the renourishment has been paid for by the Pelican Bay Services Division since they are designated as private beaches without public access. This beach segment average 105 feet in width with the beaches between R33 to R -37 requiring approximately 11,800 CY's to fill the advanced renourishment requirements. There is plenty of sand at R -31. R -32 and R -33 but the beach width has reduced to between 95 feet and 90 feet at the southern sections. The northern Pelican Bay Packet Page -1136- 6/23/2015 16.A.21. Pavilion is located at R -35.5 where the beach is approximately 93 feet wide. I would not recommend renourishing the Pelican Bay beaches this year but this is a Pelican Bay decision. The renourishment cost would be expensive because of the fixed cost for engineering, pennitting, monitoring, mobilization and the small quantities involved. Naples Beaches The Naples beach was renourished last year and will not be renourished for another two years. Clam Pass Beach This beach has not been renourished since 2007 and is in need of renourishment but cannot be renourished due to the lack of a USACE pennit. Beach renourishment for the Clam Pass Park is tied up with the dredging permit that the Pelican Bay Services Division is obtaining. The County commission can direct staff to add the renourishment of the Clam Pass Park to the new 15 year permit application that CZM is pursuing if so desired. Having the capability to renourish this beach from both the dredging of Clam Pass for tidal flushing and also with the new Master 15 year beach renourishment pen-nit will give the County additional flexibility to maintain and renourish this beach. FISCAL IMPACT: Funds have been budgeted for a beach renourislunent in the Fall of FY2015. If not necessary, these funds will be returned to reserves after confirmation that no significant hot spots will develop. GROWTH MANAGEMENT IMPACT: There is no impact to the Growth Management Plan related to this action. COMMITTEE RECOMMENDATIONS: At the Coastal Advisory Committee May 14, 2015 meeting this item was unanimously recommended for approval by an 8 to 0 vote. At the Tourist Development Council May 28, 2015 meeting this item was unanimously recommended for approval by a 6 to 0 vote. LEGAL CONSIDERATIONS: This item has been approved as to form and legality and requires majority vote for approval. — CMG RECOMMENDATION: Recommendation to review the April 2015 beach survey results and endorse a staff recommendation to not renourish the Vanderbilt, Pelican Bay, Park Shore or Naples beaches in the Fall (November) of 2015. Prepared By: J. Gary McAlpin, P.E., Coastal Zone Management Attachment A: Staff Analysis Packet Page -1137- 6/23/2015 16.A.21. COLLIER COUNTY Board of County Commissioners Item Number: 16.16.A.16.A.21. Item Summary: Recommendation to review the April 2015 beach survey results and endorse a staff recommendation to not renourish the Vanderbilt, Pelican Bay, Park Shore or Naples beaches in the Fall (November) of 2015. Meeting Date: 6/9/2015 Prepared By Name: HambrightGail Title: Accountant, Growth Management Department 5/14/2015 4:47:08 PM Submitted by Title: Accountant, Growth Management Department Name: HambrightGail 5/14/2015 4:47:09 PM Approved By Name: McAlpinGary Title: Manager - Coastal Management Programs, Growth Management Department Date: 5/14/2015 4:56:15 PM Name: PuigJudy Title: Operations Analyst, Growth Management Department Date: 5/15/2015 3:28:48 PM Name: Markiewicz.Toanne Title: Division Director - Purchasing & Gen Svc, Administrative Services Department Date: 5/16/2015 4:06:00 PM Name: JohnsonScott Title: Manager - Procurement, Administrative Services Department Date: 5/18/2015 10:04:31 AM Packet Page -1138- 6/23/2015 16.A.21. Name: NorthrupAdam Title: Procurement Specialist, Administrative Services Department Date: 5/18/2015 3:38:53 PM Name: PattersonAmy Title: Manager - Impact Fees & EDC, Growth Management Department Date: 5/19/2015 12:37:17 PM Name: KearnsAllison Title: Manager Financial & Operational Support, Growth Management Department Date: 5/19/2015 3:11:02 PM Name: Tara Castillo Title: ManagemenCBudget Analyst, Growth Management Department Date: 5/19/2015 3:12:52 PM Name: GreeneColleen Title: Assistant County Attorney, CAO General Services Date: 5/19/2015 3:18:20 PM Name: CasalanguidaNick Title: Deputy County Manager, County Managers Office Date: 5/20/2015 10:56:20 AM Name: OberrathKaren Title: Accountant, Senior, Grants Management Office Date: 5/20 /2015 2:20:44 PM Name: GreeneColleen Title: Assistant County Attorney, CAO General Services Date: 5/20/2015 2:46:39 PM Name: Stan] eyTherese Title: Manager - Grants Compliance, Grants Management Office Date: 5/20/2015 5:16:21 PM Name: KlatzkowJeff Title: County Attorney, Date: 5/21/2015 8:16:57 AM Name: CasalanguidaNick Title: Deputy County Manager, County Managers Office Date: 5/22/2015 5:13:02 PM Packet Page -1139- 6/23/2015 16.A.21. J Packet Page -1140- 6/23/2015 16.A.21. - -Sawa :)n the 2005200£ FtC Template -Baser on me available voteme seaward of me desagn neaclr dth oenwan +� nAVG (2713 berm elevatr)Aj and the nearshore praftre c,=j, '--- Rater: provtoed by 8f Packet Page -1141- BEACH WIDTH - VOLUME ANALYSIS FDEP D '2014 -02 m? **Fill -2015 -04 2015.04 Total Fill 3 -Year Weighted Diff. Total Mon. Standard O 4 Effective 0 W Advance Advance Effective X 2015 -04 C N N Width Width Distance Volume Volume Fill - 2015 Distance Erosion 3 -Yr Ero. G C (Feet) m O w c . G a C (CYJFt) (CY) b J 7 CI (C)? R -22 100 o, a 3 U v U 2 a 2% 7 2 e c c 117 114 1.013 3.8' 3,801 - -Sawa :)n the 2005200£ FtC Template -Baser on me available voteme seaward of me desagn neaclr dth oenwan +� nAVG (2713 berm elevatr)Aj and the nearshore praftre c,=j, '--- Rater: provtoed by 8f Packet Page -1141- BEACH WIDTH - VOLUME ANALYSIS FDEP Design '2014 -02 2015 -04 **Fill -2015 -04 2015.04 Total Fill 3 -Year Weighted Diff. Total Mon. Standard Beach Beach Effective Advance Advance Advance Effective Erosion 3 -yr 2015 -04 Dift/ to MHW Width Width Distance Volume Volume Fill - 2015 Distance Erosion 3 -Yr Ero. Reach (Feet) (Feet) (Feet) (Feet) (CYJFt) (CY) (CY) ( %) (CY13 -Yr) (CY/3 -Yr) (CY) (C)? R -22 100 120 112 131 3.3 431 2% -458 -28 ' R -23 100 117 114 1.013 3.8' 3,801 12% -3,539 262 R -24 100 114 112 1,070 3.5 3,714 13% -3,738 -25 R -25 100 108 106 1,033 1.9 1,975 io 12% ;0 -3,609 -1.635 0 R -26 100 139 125 989 84 8,274 a 12% -3,455 4,819 R -27 100 125 109 L 099 2.7 2,935 P 13 % 0 C' -3,824 -889 R -28 100 120 119 1,026 5.8 5,945 12% -3,583 2362 R -29 100 123 119 942 61 5,713 11% -3,292 2,421 R -30 100 125 123 1,033 7.4 7.660 j 12% -3,609 4,051 R -31 100 130 131 1,022 9.7 9.928 17% -1,676 6,252 R -32 100 122 129 1.012 91 9,186 17% -1,659 7,527 R -33 100 103 105 1,022 1.6 1,609 17% M - 1,676 -67 R -34 100 100 95 1,012 -1.6 -1,653 ot 17% a -1,659 -3,312 w rn R -35 100 104 94 998 -2 -1 -2,111 16% c -1,637 - 3,747 M R -36 100 96 90 764 -13 -2,541 13% -1,253 -3,794 R -37 100 93 95 264 -17 -453 4% -434 -887 R -38 R -39 R -40 R-41 Noun ano Soutr of C;a,r, Fuss R -41 R -43 R-44 85 76 80 432 -18 -798 ( 4% -1,354 -2,153 R -45 85 99 96 1,078 4.0 4,279 10% -3,379 900 R-46 85 98 88 1,040 0.9 967 10% -3,262 •2,295 R-47 85 101 105 953 6.4 6,066 90% -2,989 3,077 R-48 85 64 96 1,000 3.9 3.949 9% -3.136 813 R-49 85 97 58 17,077 08 889 10 010 3.376 2,480' w T -50 85 120 117 1; 208 102 12.379 11% a -3;787 8,592 u R -61 85 123 105 108 6.7 7.384 10% -3,473 3,912 R -52 85 110 100 967 49 4,728 9% -3,032 1 -696 R -53 85 99 95 1,060 33 3,465 10% -3,322 143 T -54 85 124 113 735 8.0 5,867 7% -2,305 3,561 U -55 85 108 122 0 1113 0 0% 0 0 R -56 T -57 vin o`2:actcrs Pass '-Annual - *3 -Year Advance Reach Erosion Erosion Fill - 2015 (CYrYr) (CY,r3-Yr) (C Y) Vanderbilt (R -22 +300 to R -30.5) -9 702 -29 105 40 446 Pelican Bay (R -30.5 to R -37) -9,933 3 6c5 DRAFT Park Shore (R -43 +650 to R -54 *400) 1 ? 138 i3 414 49 174 - -Sawa :)n the 2005200£ FtC Template -Baser on me available voteme seaward of me desagn neaclr dth oenwan +� nAVG (2713 berm elevatr)Aj and the nearshore praftre c,=j, '--- Rater: provtoed by 8f Packet Page -1141- 6/23/2015 16.A.21. DEP Design 139 123 109 127 Beach Width (Feet) 131 120 115 122 Mon. Standard 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 R -34 100 83 104 107 87 Wiggins Pass 110 100 102 89 100 95 R -17 82 103 98 79 94 97 94 87 82 104 94 68 R -18 96 92 79 82 92 90 90 78 96 90 R -37 100 94 R -19 99 92 Not Analyzed as Part of This Report - Shown for Reference Only 83 95 81 R -20 95 R -38 - 111 88 115 104 104 101 77 109 93 81 R -21 R -39 - 101 95 104 88 80 111 94 107 97 107 93 R -22 100 107 107 120 112 112 124 118 108 NIA 120 112 R -23 100 102 123 129 916 118 113 122 116 110 117 114 R -24 100 116 132 138 119 116 135 124 125 99 114 112 R -25 100 95 135 136 112 112 124 112 113 93 108 106 R -26 100 109 147 148 123 123 135 121 123 106 139 125 R -27 100 83 124 117 98 96 97 89 91 91 125 109 R -28 100 97 138 123 112 108 112 111 99 88 120 119 R -29 100 88 143 120 105 108 107 106 98 93 123 119 R -30 100 110 141 131 109 125 113 108 117 110 125 123 a_ -)e ann 109 -132 121 117 136 131 124 117 102 -71j0 io1 R -32 100 110 139 123 109 127 126 131 120 115 122 129 R -33 100 96 107 96 99 108 111 113 105 95 103 105 R -34 100 83 104 107 87 93 110 100 102 89 100 95 R -35 100 82 103 98 79 94 97 94 87 82 104 94 R -36 100 84 96 92 79 82 92 90 90 78 96 90 R -37 100 102 92 99 92 98 95 83 95 85 93 95 R -38 - 111 88 115 104 104 101 77 109 93 101 104 R -39 - 101 95 104 88 80 111 94 107 97 107 110 R -40 - 73 77 81 76 73 107 118 83 111 98 125 R -41 - 111 110 112 138 173 99 131 80 158 157 193 Clam Pass S. of Wiggins Pass Avg. Beach Width - - - - - - 83 R -17 to R -21 Vanderbilt Beach Avg. Beach Width 100 132 129 112 113 118 112 110 99 121 115 R -22 to R -31 Pelican Bay Beach Avg. Beach Width 95 110 105 94 105 109 105 102 92 107 105 R -32 to R -37 N, of Clam Pass Avg. Beach Width 99 92 103 101 107 105 105 95 115 116 133 R -38 to R -41 Packet Page -1142- 6/23/2015 16.A.21. 0 = u U N Qj 4 � O a�ocvr E R Q J M N C) o w Lo rn W 2 M J Z w z zl O � W w (/7 C.1 O O v o 2 N Q o� Z to o Li oo g o u ,0> 4 i z 'Q N m = = W o W R Z< j lal D F- � L-Li �Wil° z o z w �v_� _J z w J l.J C,4 O _p GZU = ;; i � (_� O d O Co 'Q G a o � � � W `✓ .ii �. s W � a _ � p ❑ `p �v�^i Tc� r � Ln tt G On W � O Z W Cfh C I N O h 4 h O +ft Cn vN .t, ..n373 on vN '1j "n373 Packet Page -1143- 6/23/2015 16.A.21. - Provided by Atkins -Ba.sed on the 2005,2006 Fili Template -"eased on the available volume seaward of tr,e des,grn beach s,ndth betv✓eerz 13 NAVO (2013 berm elevation) and the nearshore profile closure. -mates provided by CS! Packet Page -1144- BEACH WIDTH - VOLUME ANALYSIS C FDEP Design '2014 -02 2014 -12 2015 -04 "Fill " "2015 -04 2015 -04 �- Fill W Weighted Diff. Total Mon. Standard Beach Beach v W v1 Y 0> E g Advance Advance Effective Erosion 3 -yr 2015.04 Diff.1 to MHW Width Width Width Distance Volume Volume Fill - 2015 Distance Erosion 3-Yr Ero. U g CD a rn a D U LI) U e 4 U U in i 2 (CY43 -Yr) (CY13 -Yr) (Cr 6 7 8 9 10 11 12 - Provided by Atkins -Ba.sed on the 2005,2006 Fili Template -"eased on the available volume seaward of tr,e des,grn beach s,ndth betv✓eerz 13 NAVO (2013 berm elevation) and the nearshore profile closure. -mates provided by CS! Packet Page -1144- BEACH WIDTH - VOLUME ANALYSIS FDEP Design '2014 -02 2014 -12 2015 -04 "Fill " "2015 -04 2015 -04 Total Fill 3 -Year Weighted Diff. Total Mon. Standard Beach Beach Beach Effective Advance Advance Advance Effective Erosion 3 -yr 2015.04 Diff.1 to MHW Width Width Width Distance Volume Volume Fill - 2015 Distance Erosion 3-Yr Ero. Reach (Feet) (Feet) (Feet) (Feet) (Feet) (CYIFt) (Cr (C Y) (%) (CY43 -Yr) (CY13 -Yr) (Cr (C 10 R -58A 100 140 71 52 517 -17.7 -9,157 3% -2,248 - 11,405 R -58 100 124 144 125 790 5.7 4,484 4% -3,433 1,051 R -59 100 117 111 122 1,033 5.3 5,446 6% -4,491 955 R -60 100 109 126 107 1,081 1.8 1,958 6% -4,700 -2,742 R -61 100 121 158 139 1.049 11.2 11,739 6% - 4,559 7,180 T-62 100 105 136 145 1.015 13.0 13,234 5% -4,410 6,824 R -63 100 116 67 106 967 1.8 1,727 5% -4.204 -2,477 R -64 100 107 103 96 854 -1.4 -1,209 5% -3,713 -4,921 T -65 100 125 122 120 804 7.2 5,778 4% -3,495 2,283 R -66 100 129 119 126 813 9.3 7.578 4% -3,533 4,045 R -67 100 174 171 172 805 26.8 21,552 Co 4% -3,497 18,055 R -68 100 162 163 167 810 25.3 20.467 P° 4% -3,521 16,946 T -69 100 149 149 156 805 229 16,430 N 4% -3,498 14,932 R -70 100 140 124 136 800 13.5 10,789 4% -3,479 7,309 R -71 100 144 129 147 803 19.8 15,869 4% -3,491 12.378 R -72 100 155 158 172 808 29.6 23,901 4% -3,510 20,391 R -73 100 153 158 186 814 35.9 29,192 4% -3.537 25.655 R -74 100 144 145 176 803 32.0 25.664 4% -3,490 22,174 R -75 100 116 100 147 795 24.8 19,700 4% -3,456 16,244 R -76 100 113 116 94 799 -1.4 -1,107 1 4% -3,475 - 4,582 R -77 100 116 120 111 782 -2.6 -21060 4% -3,399 -5.459 1 R -78 100 100 97 103 659 0.8 540 4°i -2.866 -2.326 R -79 100 105 97 99 276 -0.5 -132 1 °'0 -1,202 -1.334 R -80 F -81 R -82 R -83 R•8a Norfn o! u0rdon pass U -85 T -86 R -87 F -88 F -89 " "Annual '***3 -Year Advance Adv. Less Reach Erosion Erosion Fill - 2015 3 -Yr Eros. DRAFT (CYIYr) (CYI3 -Yr) (Cr (Cr Naples Beach (Doctors to R -79) - -7,069 - 81,207 224,362 143.175 - Provided by Atkins -Ba.sed on the 2005,2006 Fili Template -"eased on the available volume seaward of tr,e des,grn beach s,ndth betv✓eerz 13 NAVO (2013 berm elevation) and the nearshore profile closure. -mates provided by CS! Packet Page -1144-