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Backup Documents 03/04/2025 Item #2A (Clam Bay Workshop Presentation) Agenda Item #: 2A n� �r Clam Pass Name: Address/Phone: \Ck›-k.c.r..14e CLGvi 11.A./11 Ceding Time To: 2� a SeCi ll o se (lye_ No /pus 03 - PLEASE PRINT CLEARLY q5 ' COLLIER COUNTY ORDINANCE NO.2003-53,AS AMENDED BY ORDINANCE 2004-05 AND 2007-24,REQUIRES THAT ALL LOBBYIST SHALL,BEFORE ENGAGING IN ANY LOBBYING ACTIVITIES(INCLUDING,BUT NOT LIMITED TO,ADDRESSING THE BOARD OF COUNTY COMMISSIONERS),REGISTER WITH THE CLERK TO THE BOARD AT THE BOARD MINUTES AND RECORDS TMENT YOU ARE LIMITED TO THREE(3)MINUTES FOR YOUR COMMENTS ANDARE TO ADDRESS ONLY THE CHAIR PUBLIC COMMENT IS NOT INTENDED TO BE A FORUM FOR SELF-PROMOTION. PUBLIC COMMENT SPEAKERS WHO ENGAGE IN ADVERTISING THEIR BUSINESS,PERSONAL POLITICKING OR OTHER FORMS OF SELF-PROMOTION WILL BE ASKED TO LEAVE THE PODIUM. PLACE COMPLETED FORM ON THE TABLE TO THE LEFT OF THE DAIS Agenda Item #: 2A March .? 9nns Clam Pass Na Address/Phone: Sa 0 _.1- owe -a).2 <-13zczine . 4 . Ceding Time To: \ Dccp(e 5IS. Thr-) PLEASE PRINT Ry COLLIER COUNTY ORDINANCE NO.2003-53,AS AMENDED ORDINANCE 25 05 AND 2007-7-2L REQEA UIRESHATT ALL LOBBYIST SHALL,BEFORE ENGAGING IN ANY LOBBYING ACTIVITIES(INCLUDING,BUT NOT LIMITED TO,ADDRESSING THE BOARD OF COUNTY COMMISSIONERS),REGISTER WITH THE CLERK TO THE BOARD AT THE BOARD MINUTES AND RECORDS TMENT YOU ARE LIMITED TO THREE(3)MINUTES FOR YOUR COMMENTS ANDARE TO ADDRESS ONLY THE CHAIR PUBLIC COMMENT IS NOT INTENDED TO BE A FORUM FOR SELF-PROMOTION. PUBLIC COMMENT SPEAKERS WHO ENGAGE IN ADVERTISING THEIR BUSINESS,PERSONAL POLITICKING OR OTHER FORMS OF SELF-PROMOTION WILL BE ASKED TO LEAVE THE PODIUM. PLACE COMPLETED FORM ON THE TABLE TO THE LEFT OF THE DAIS Agenda Item #: 2A Clam Pass March 4, 2025 Name: Address/Phone: fi \\-) Ceding Time To: ka4ole,5 FL q17-- SLUo -ea (oct7 PLEASE PRINT CLEARLY COLLIER COUNTY ORDINANCE NO.2003-53,AS AMENDED BY ORDINANCE 2004-05 AND 2007-24,REQUIRES THAT ALL LOBBYIST SHALL,BEFORE ENGAGING IN ANY LOBBYING ACTIVITIES(INCLUDING,BUT NOT LIMITED TO,ADDRESSING THE BOARD OF COUNTY COMMISSIONERS),REGISTER WITH THE CLERK TO THE BOARD AT THE BOARD MINUTES AND RECORDS DEPARTMENT YOU ARE LIMITED TO THREE (3) MINUTES FOR YOUR COMMENTS AND ARE TO ADDRESS ONLY THE CHAIR PUBLIC COMMENT IS NOT INTENDED TO BE A FORUM FOR SELF-PROMOTION. PUBLIC COMMENT SPEAKERS WHO ENGAGE IN ADVERTISING THEIR BUSINESS,PERSONAL POLITICKING OR OTHER FORMS OF SELF-PROMOTION WILL BE ASKED TO LEAVE THE PODIUM. PLACE COMPLETED FORM ON THE TABLE TO THE LEFT OF THE DAIS { Agenda Item #: 2A Clam Pass March 4, 2025 Name: - Address/Phone: -->-- ,Cr. c_ Fr Y1-,(00 Z (p rJ S FA vc R Ceding Time To: ��' l > /� �/'C f> PLEASE PRINT CLEARLY COLLIER COUNTY ORDINANCE NO.2003-53,AS AMENDED BY ORDINANCE 2004-05 AND 2007-24,REQUIRES THAT ALL LOBBYIST SHALL,BEFORE ENGAGING IN ANY LOBBYING ACTIVITIES(INCLUDING,BUT NOT LIMITED TO,ADDRESSING THE BOARD OF COUNTY COMMISSIONERS),REGISTER WITH THE CLERK TO THE BOARD AT THE BOARD MINUTES AND RECORDS DEPARTMENT YOU ARE LIMITED TO THREE(3)MINUTES FOR YOUR COMMENTS AND ARE TO ADDRESS ONLY THE CHAIR PUBLIC COMMENT IS NOT INTENDED TO BE A FORUM FOR SELF-PROMOTION. PUBLIC COMMENT SPEAKERS WHO ENGAGE IN ADVERTISING THEIR BUSINESS,PERSONAL POLITICKING OR OTHER FORMS OF SELF-PROMOTION WILL BE ASKED TO LEAVE THE PODIUM. PLACE COMPLETED FORM ON THE TABLE TO THE LEFT OF THE DAIS Agenda Item #: 2A Clam Pass March 4, 2025 Name: AddresslPhone: C (553 5/50 s Aovy2-. Ceding Time To: 714711es 71;'T1 Cwzz )hu( J 3 -1 , v -z) PLEASE PRINT CLEARLY COLLIER COUNTY ORDINANCE NO.2003-53,AS AMENDED BY ORDINANCE 2004-05 AND 2007-24,REQUIRES THAT ALL LOBBYIST SHALL,BEFORE ENGAGING IN ANY LOBBYING ACTIVITIES(INCLUDING,BUT NOT LIMITED TO,ADDRESSING THE BOARD OF COUNTY COMMISSIONERS),REGISTER WITH THE CLERK TO THE BOARD AT THE BOARD MINUTES AND RECORDS DEPARTMENT YOU ARE LIMITED TO THREE(3)MINUTES FOR YOUR COMMENTS AND ARE TO ADDRESS ONLY THE CHAIR PUBLIC COMMENT IS NOT INTENDED TO BE A FORUM FOR SELF-PROMOTION. PUBLIC COMMENT SPEAKERS WHO ENGAGE IN ADVERTISING THEIR BUSINESS,PERSONAL POLITICKING OR OTHER FORMS OF SELF-PROMOTION WILL BE ASKED TO LEAVE THE PODIUM. PLACE COMPLETED FORM ON THE TABLE TO THE LEFT OF THE DAIS vn. Hx MILTON Imagery '} JJ + •■• • r / 1 i i )6; i slam Pass ':: .. . ..,... ... 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'Ali• CLAM BAY Water Quality Sample Locations Collier County,Florida ,, -- -. 07/25/23 N/A AS SHOWN Table 1. Total Phosphorus concentrations per sample location Green represents samples in compliance with the NNC.Red cells indicate exceedance of the NNC.Red cells with an "X"represent values that are within 5% of NNC concentration, suggesting lack of compliance should be interpreted with caution, due to analytical precision.Gray cells represent lack of data. TABLE 1.Total Phosphorous(TP)(mg/L) Date Sample Location (month/year) CBI CB2 CB3 CB4 CBS 1 CB6 CB7 J CB8 CB9 Jan-23 — Feb-23 h. X Mar-23 1 __ Apr-23 .-__ May-23 Jun-23 y July-23 Aug-23 Sep-23 --�_~ Oct-23 X Nov-23 t t Dec-23 ,. If all exceedances of the NNC are factored in,TP at stations 5, 6,7,8,and 9,exceeded the NNC in 7/60 (11.7%)which slightly exceeds the not more than 10%criteria. If the exceedances within 5%of the NNC are not factored in,TP at stations 5, 6,7,8, and 9 exceeded the NCC in 6/60(10%)which is in compliance with the NNC criteria. Table 2.Total Nitrogen concentrations per sample location _ Green represents samples in compliance with the NNC. Red indicates exceedance of the NNC. Red cells with an "X"represent values that are within 5% of NNC concentration, suggesting lack of compliance should be interpreted with caution due to analytical precision.Gray cells represent lack of data. TABLE 2.Total Nitrogen(TN)(mg/L) Date Sample Location B1 (month/year) C CB2 I( CB3 064 t I CBS CB6 CB7 j CB8 CB9 ' Jan-23 i Feb-23 _4 X- Mar-23 —1` 11 X I Apr-23 -- I f May-23 -.._._ ; — f Jun-23 i ..... Jul-23 { Aug23 ' X I i _______-J Sep-23 ' Y I j i Oct-23 Nov 23 --J I 3 _ Dec-23 I I ( —� If all exceedances of the NNC are factored in,TN at stations 5, 6, 7, 8, and 9, exceeded the NCC in 7/60 (11.7%)which slightly exceeds the not more than 10%criteria. If the exceedances within 5%of the NNC are not factored in,TN at stations 5, 6,7, 8,and 9 exceeded the NCC in 5/60(8.3%)which is in compliance with the NCC criteria. Table 3. Dissolved Oxygen Saturation values per sample location over the period of January 2023 to December 2023 in Clam Bay in relation to the established standard criteria for Class II waters (42% saturation). Yellow represents samples not in compliance with criteria. TABLE 3.Dissolved Oxygen Saturation(%) Station Location Date (month/year) CB1 CB2 CB3 CM CBS CB6 CB7 CB8 CB9 Jan-23 85.3 79.2 77.6 81.1 85.7 94.6 95.7 80.7 91 Feb-23 NS 67.6 77.3 79.9 87.5 101.1 95.1 99.9 78.4 Mar-23 57.4 39.4 60.7 59.7 73 80.1 76.8 72.4 72.8 Apr-23 64.8 56.5 61.2 86.8 88.9 93.6 81.6 67 59.5 May-23 59.5 27.1 42.8 78.4 74 80.9 _ 76.2 68.9 73.3 Jun-23 56.8 41.7 56.2 73.4 90.3 84.6 62.8 69.3 78.5 Jul-23 54.3 52.1 76.3 82.7 70.1 86 81.4 88.5 110.1 Aug-23 82.3 46.1 78.1 67.8 82.7 95.9 88.6 91.5 84.5 Sep-23 I 35 35.2 73.9 1 73.6 82.8 96.1 85.7 92.5 87.9 Oct-23 ! 31.8 25 64.1 70.6 67.4 95 85.7 72.3 61 Nov-23 76.3 45.4 78.8 74.1 75.1 100.7 92 109.7 89.4 Dec-23 60.5 46.8 71 73.5 79 104.6 110.4 92 98.4 All water samples at stations 5, 6, 7, 8, and 9 met the established criteria of 42% saturation in 2023. Table 4. Copper values per sample location over the period of January 2023 through December 2023 in Clam Bay in relation to the established standard criteria for Class II waters(3.7 ug/L). Yellow cells are above the established standard criteria. Gray cells represent lack of data. 1 TABLE 4.Copper(pg/L) i Sample Location Date CB1 CB2 CB3 CM ` CBS CB6 CB7 ' CB8 CB9 (month/year) Jan-23 1.05 1.49 1.51 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U Feb-23 1.96 1.37 1.37 1.2 U 1.2 U 1.64 1.2 U 1.2 U Mar-23 2.4 2:19 1.9 1.58 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U Apr-23 1.84 2.49 1.32 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U May-23 2.75 1.42 1.2U 1.2U 1.2U 1.2U 1.2U 1.2U Jun-23 152 1.71 1.42 1.2 U 1.2 U M 1.2 U 1.21 1.2 U Jul-2' 1.59 1.68 1.32 I 1.2 U 1.2 U - 1.2 U 1.2 U 1.2 U 1.2 U Aug-23 1.66 2.02 1.2 U J 1.2 U 1.2U 1.2 U 1.2 U 1.2U 1.2 U - 3 1.17 1.52 1.2 U 1.31 1.2U 1.2 U 1.2U 1.2 U 1.2 U Oct-23 1.09 1.05 U 1.2 U 1.2 U 1.2U 1.2 U 1.2 U 1.2 U 1.2 U Nov-23 1.2U 1.22 1.2U 1.2U 1.2U 1.2U 1.2U 1.22 1.2U Dec-23 1.88 2.24 2.02 1.79 1.34 1.63 2.35 1.36 1.2 U U=Result did not exceed the laboratories Minimum Detection Level(MDL) All water samples at stations 5, 6, 7, 8, and 9 met the established criteria of 3.7 ug/L in 2023. fix 1 i t •I i 7 Y . - �!�y{}{•�"`,�y�ry� 73}}!,' `:r'' p2 X�p{',y �V�y•y��r,� ��pp y �j�f S, 7 : 1 Rf♦�M V -iyk -S' 4 •w7�p�lV�,'t�k'fT } � F�S� � �%�� ,� -. 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R�;i, tY .. - 3 a STAGING AREA PER DEP PERMIT # 0296087-001—JC NORTH LIMIT OF SOUTH FILL TEMPLATE ® R-42+130' �l R-42 R-42+500R-43 SOUTH GRADING AREA (SEE NOTE 4) PERMITTED DREDGE TEMPLATE (SEE NOTE 5) NOTES: R-44 7. APPROXIMATE SOUTHERN EXTENT OF FILL © R-42+880' IF 8,500 CY EXCAVATED R-45 1. BACKGROUND AERIAL PHOTOGRAPH TAKEN IN NOVEMBER 2016 AND PROVIDED COURTESY OF COLLIER COUNTY PROPERTY APPRAISER. INSET AT CLAM PASS AERIAL PHOTOGRAPH BY HUMISTON & MOORE MARCH 6, 2018. 2. SEE SHEET 11 FOR BEACH FILL SECTIONS. 3. NO FILL TO BE PLACED SOUTH OF SOUTHERN CLAM PASS PARK BOUNDARY. 4. AREA SOUTH OF INLET TO BE GRADED FOR CONSTRUCTION ACCESS AND TO ELIMINATE ESCARPMENTS BASED ON CONDITIONS AT TIME OF CONSTRUCTION. 5. SAND FROM DREDGE TEMPLATE TO BE PLACED IN SOUTH FILL TEMPLATE BOUNDARY. —IIL7KhN CLAM PASS MAINTENANCE DREDGING 5679 STRAND COURT SITE PLAN — DREDGE AND FILL NAPLES, FL 34110 o zoo' aoo' ENGINEERS FOR: PELICAN BAY SERVICES DIVISION FAX: (239) 594-2025 • r , l COAs1HE DATE: 03 19 18 FILE: PLAN SCALE: SHOWN PHONE: (239) 594-2021 ET:GINEERING OLSIGFI www.humisfonandmoore.com ----.._ANDPERMITTING JOB: 23-065 DATUM: NAVD88 SHEET: 3 Pelican Bay Services Division History of Clam Pass Pelican Bay Services Division 1998 20022000 1999 2007 Clam Bay Restoration and Management Plan 10-year USACE / FDEP Joint Coastal Permit Purpose: to conduct activities to improve hydrodynamics, restore, and manage the Clam Bay ecosystem to address mangrove die-off Initial dredge Mechanical dredge Mechanical dredge 2008 Permit set to expire in 2008 but Corps granted one year extension until 2009 2012 Inlet Closed 2013 Ordinance 2013-19 transfers responsibility for management of Clam Bay and Clam Pass to Pelican Bay Services Division. Division obtains USACE permit for single dredging event to re-open inlet. Pass is re-opened using land- based equipment 2014 Clam Bay / Clam Pass stakeholders are invited to participate in development of new management plan. 28 meetings are held Clam Bay Natural Resource Protection Area (NRPA) Management Plan Goal: establish basis for management activities to protect health of Clam Bay NRPA estuary Objectives: •maintain and protect native floral and fauna communities (mangroves and wildlife) •ensure estuary has adequate tidal and freshwater flows to maintain ecological health (maintenance dredging) •monitor water quality •monitor archaeological sites •passive recreational activities 2015 Clam Bay NRPA Management Plan approved by BCC 2016 New 10-year USACE / FDEP Joint Coastal maintenance dredging permit issued Hydraulic dredge performed Clam Pass dredging template 2017 Mechanical dredge (3 events) 2018 Hydraulic dredge 2020 2022 2024 Mechanical dredge Current 10-year permit expires in March 2026 New 15-year maintenance dredging permit renewal process underway Clam Pass current conditions January 28, 2025