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PBSD MSTBU Agenda 01/03/2019 PELICAN BAY SERVICES DIVISION CLAM BAY COMMITTEE MEETING NOVEMBER 8,2018 The Clam Bay Committee of the Pelican Bay Services Division met on Thursday,November 8 at 1:30 p.m.at the SunTrust Bank Building, 801 Laurel Oak Drive,Suite 302,Naples,Florida 34108. In attendance were: Clam Bay Committee Bohdan Hirniak (absent) Susan O'Brien, Chairman Rick Swider Pelican Bay Services Division Staff Mary McCaughtry, Ops. Analyst (absent) Neil Dorrill, Administrator Lisa Jacob, Assoc. Project Manager Marion Bolick, Operations Manager (absent) Barbara Shea, Recording Secretary Also Present Tim Hall, Turrell, Hall &Assoc. Jennifer Bobka, Earth Tech Jeremy Sterk, Earth Tech Mohamed Dabees, Humiston& Moore Kathy Worley, Conservancy of SW Florida APPROVED AGENDA(AS AMENDED) 1. Roll call 2. Agenda approval 3. Approval of 09/06/18 meeting minutes 4. Audience comments 5. Clam Bay a. Update on monitoring b. Update on stressed mangroves near PBF north boardwalk c. THA assessment of debris removal and hand-dug channel maintenance d. Suggested changes to Scope of work for Clam Bay monitoring e. Canoe trail marker 12 6. Clam Pass a. H&M October tidal ratio report b. October aerial photos c. Impact of Hurricane Michael on Clam Pass d. Upgraded modems for tidal gauges 7. Water quality a. 3rd Quarter Clam Bay WQ results b. TP exceedances in 2nd Quarter report c. Copper results d. August WQ results from County Lab e. Changes in upland pond WQ testing and reporting f. Analyzing TP results from past decades g. Documenting rookery activity in annual WQ report 8. Review/update of the Clam Bay Management Plan 1 Pelican Bay Services Division Clam Bay Committee Meeting November 8,2018 8.5 New Business (add-on) 9. Annual Reports a. Clam Bay Tidal Analysis and Bathymetric reports due December 21, 2018 b. Water Quality report due February 15, 2019 10. Next meeting: January 3, 2019 11. Adjournment ROLL CALL Mr. Hirniak was absent and a quorum was established AGENDA APPROVAL - -- — Ms. O'Brien motioned, Mr. Swider seconded to approve the agenda as amended, with the addition of item#8.5. The motion carried unanimously. APPROVAL OF 09/06/18 MEETING MINUTES Ms. O'Brien motioned, Mr. Swider seconded to approve the 09/06/18 meeting minutes as amended. The motion carried unanimously. AUDIENCE COMMENTS Ms. Kathy Worley, Conservancy of SW Florida, asked what the protocol would be to obtain permission to permanently install two "sediment elevation tables" in Clam Bay, which are stainless steel pipe instruments monitored over time to measure sediment accretion or erosion. This is one of the ways sea level rise can be monitored, and it can be determined whether the mangrove forest will "keep up" with sea level rise. Ms. Worley is working with U.S.G.S. (U.S. Geological Survey) and Rookery Bay on this project. The project would require no funding or action by the PBSD. The two instruments would be installed deep within the mangrove forest and would not be visible. Mr. Dorrill suggested that Ms. Worley submit an e-mailed request for a license agreement including a sketch of the device, with a copy to Mr. Frank Laney, PBF Covenant Enforcement. The PBSD would then either include the request as an item on the consent agenda of a future Board of County Commissioners' meeting or follow any other direction given by the County Manager's Office. CLAM BAY UPDATE ON MONITORING Mr. Sterk, Environmental Consultant with Earth Tech, provided data on his recent gopher tortoise survey which shows a stable tortoise population. He commented that his coastal scrub monitoring showed comparable data from 2017 to 2018,noting some increase in sea grape growth. UPDATE ON STRESSED MANGROVES NEAR PBF NORTH BOARDWALK Mr. Sterk provided an update on an area of stressed mangroves, located just south of the north boardwalk. He commented that he has added a few connections between hand-dug channels (in this area)to improve drainage which will hopefully reduce stress to these mangroves. 2 Pelican Bay Services Division Clam Bay Committee Meeting November 8,2018 THA ASSESSMENT OF DEBRIS REMOVAL AND HAND-DUG CHANNEL MAINTENANCE Mr. Hall, Environmental Consultant with Turrell, Hall and Assoc., provided his assessment/inspection report on the channel maintenance work conducted this year. He observed that a significant amount of vegetative debris was removed,and that the work completed was more comprehensive than in prior years. SUGGESTED CHANGES TO SCOPE OF WORK FOR CLAM BAY MONITORING Last year's scope of work for Clam Bay monitoring was included in the agenda packet. The committee and staff discussed possible changes to the scope of work for the next contract, as Earth Tech's contract expires in March 2019. Ms. Jacob suggested the following changes to the scope of work: (1) add additional mapping of hand-dug channels as part of Task 8 and (2) add "provide an infrared aerial photo and an RGB aerial photo" to Task 1. The committee discussed adding shorebird monitoring as additional monitoring of flora and fauna monitoring to Task 5. Ms. Jacob suggested and the committee agreed that she would prepare a solicitation package for an RFP(request for proposal)for Clam Bay monitoring and environmental consulting services to meet our specific needs, for 3-5 years. CANOE TRAIL MARKER 12 Mr. Sterk reported that he was informed by County staff that canoe trail marker 12 will be removed and disposed of next week. CLAM PASS H&M OCTOBER TIDAL RATIO RESULTS Dr. Dabees commented that October tidal flow looks good, ratios are in the "safe range," and inlet conditions look stable. He noted that tide gauge#4 is not working. Ms.Jacob commented that she has ordered a replacement sensor probe. Ms. O'Brien and Mr. Sterk suggested that the PBSD purchase two new sensors (one to store as a backup). OCTOBER AERIAL PHOTOS & IMPACTS OF HURRICANE MICHAEL ON CLAM PASS Dr. Dabees provided aerial photos of Clam Pass (taken at the end of October after Hurricane Michael)and commented that there is a lot of sand near shore and within the inlet mouth. He commented that (1) the inlet looks stable, (2) the channel is now"Y" shaped, and (3) he will continue to perform spot checks for annual monitoring. Ms. Mary McClean Johnson asked about any escarpment on the beach. Dr. Dabees commented that Hurricane Irma caused a significant overwash of sand into the dune. A combination of this event along with the recent king tide and Hurricane Michael caused a super- elevation of sand on the PB South Beach. Dr. Dabees recommended no action be taken unless the escarpment becomes a public safety issue. He commented that if the escarpment is "knocked down,"then sand would be lost by moving it from the high berm into the water. Mr.Hall commented that he is working on obtaining a DEP field permit which would allow for a PBF contractor to remove sand from under the PBF South Beach facility and place it in front of the escarpment. UPGRADED MODEMS FOR TIDAL GAUGES 3 Pelican Bay Services Division Clam Bay Committee Meeting November 8,2018 Ms. Jacob commented that the PBSD is purchasing new modems for the tide gauges. The activation by Locher Environmental will be delayed until the new modems and the new sensor probe are received and ready for installation(by ETE). WATER QUALITY 3RD QUARTER CLAM BAY WQ RESULTS INCLUDING TP EXCEEDANCES Dr. Tomasko, Environmental Consultant with ESA, provided the 3rd quarter Clam Bay water quality report (included in the agenda packet). Mr. Hall commented on the elevated phosphorus levels as well as higher nitrogen concentrations throughout the system. He suggested that this may be a result of the degradation of Hurricane Irma material and improvement in canal flow. He reported that Dr. Tomasko is working on a more detailed analysis. COPPER RESULTS Not discussed AUGUST WQ RESULTS FROM COUNTY LAB Not discussed. CHANGES IN UPLAND POND WQ TESTING AND REPORTING Mr. Hall commented that Dr. Tomasko does not recommend the continuation of water quality testing in upland ponds. He noted that we are currently monitoring water quality at berm sites, and the input to Clam Bay is from the berm. ANALYZING TP RESULTS FROM PAST DECADES Mr. Hall commented that he will take a look at some historical data on Clam Bay phosphorus levels,to determine whether any trend exists. DOCUMENTING ROOKERY ACTIVITY IN ANNUAL WQ REPORT Mr. Hall suggested obtaining monthly drone photos of the rookery in Upper Clam Bay, from November to May, for documentation purposes. Ms.Worley commented that the use of a drone above a rookery during bird breeding season is frowned upon by the environmental community. The birds see the drone as a predator and the noise disturbs them. She also commented that the rookery has existed for years, and therefore, could not be a new source of phosphorus. Mr. Hall suggested getting a count of the birds roosting in the rookery for documentation purposes. BLUE TILAPIA EFFECTS ON WATER QUALITY Mr. Hall commented that he would seek Dr. Tomasko's opinion on possible negative ecological impacts from installing blue tilapia in our lakes as a method to reduce algae. REVIEW/UPDATE OF THE CLAM BAY MANAGEMENT PLAN Mr. Dorrill commented on recent communications with Mr. Nick Casalanguida, Deputy County Manager, relating to perception issues pertaining to Clam Pass inlet dredging and the frequency of dredging over the past three years. He reported that the County Manager and Deputy 4 Pelican Bay Services Division Clam Bay Committee Meeting November 8,2018 County Manager would like the PBSD to do an assessment/evaluation of whether alternative design templates could increase or sustain the intervals of dredging events. Mr. Dorrill suggested that our response include a discussion that Clam Pass is influenced by wave energy and heights above three feet and that we have good science and weather data to support the system that we have. He suggested that we request a meeting with Mr. Casalanguida and/or Mr. Callahan, County Executive Director of Corp. Business Ops., to elaborate on the type of analysis/report being requested. Ms. O'Brien suggested that the committee spend time to gather the appropriate documentation to share with the County Manager's Office. Dr. Dabees suggested that we provide (1) a 5-year evaluation of how the implementation compared to the design goals, and (2) provide data on the unusually inactive storm seasons from 2007 to 2012, followed by the active seasons from 2012 to 2018. Mr. Dorrill suggested that Dr. Dabees develop a scope and sequence or outline as to what an appropriate response (and any necessary exhibits) should include, to be brought back for evaluation by the Clam Bay Committee. He also suggested that we talk to Commissioner Solis, show him our intentions for a Clam Bay Management Plan update, and obtain his ideas on how to proceed. Ms. O'Brien suggested that the committee review a draft of Dr. Dabees' analysis report at the next Clam Bay Committee meeting on Jan. 3. Ms. Johnson commented on the frequent dredging events at Wiggins Pass and Doctors Pass. Dr. Dabees commented on the series of events which lead up to a"trigger" of a dredging event. Once tidal ratios are sustained below .5, a bathymetric survey is completed to determine whether critical shoaling exists. If the survey indicates that physical conditions have become restrictive,then a dredging event is triggered. Ms. Worley commented that Wiggins Pass and Doctors Pass are dredged for navigational purposes, while the goal of dredging Clam Pass is to keep the habitat healthy and minimize any environmental impacts. NEW BUSINESS (ADD-ON) Ms. Johnson asked whether the blue tilapia installed by the PBSD in PB lakes are genetically modified. ANNUAL REPORTS CLAM BAY TIDAL ANALYSIS AND BATHYMETRIC REPORTS DUE DECEMBER 21,2018 Not discussed WATER QUALITY REPORT DUE FEBRUARY 15,2019 Not discussed NEXT MEETING: By consensus,the committee agreed that the next meeting of the committee would be held on January 3, 2019 at 1:30 p.m. ADJOURNMENT 5 Pelican Bay Services Division Clam Bay Committee Meeting November 8,2018 The meeting was adjourned at 3:25 p.m. Susan O'Brien, Chairman Minutes approved [ ] as presented OR [ ] as amended ON [ ] date 6 12/4/2018 humistonandmoore I ClamPass-TIDE Agenda item#6b Page 1O : 1.4x+9 �; M 4^ l *t.y.t€ t°,4.4,--,,,,,,,,„t,,,,t, €, Vitra -g .. -'tt tlt)4,,xr,,,tt'a£ ,'+:4tt,.ms... z..:''.aCaz,sash-,:`,>0> ;4�.:41, ”.Y,+40,... :1.t;4/444' «4: HUMISTON &MOORE ENGINEERSttsol Home About H&M Services Projects Contact Careers Client Login4 a h Consulting Coastal Engineers CLam Pass Tide Monitoring,- Click here for Maintenance Dredging Project details xSuNoiS._...�„ �i � ,t 2MARKER 4 MARKER 14 ,, : � 3r t f ..., i .a!' I• T • ide Gages Location, �.,. l� '' <:� ` �. dv =•..t't "ta, a,.• ?+ �t<.. r...>f•, .S rdp'`!�' C:'.5,1,a. .t_> - +6.. f';--;`.;,wort- Monthly Time Series 2018(Click on Thumbnails to Expand) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Mean Low TideTime Lag -2018 300.0 , PASS DREDGING 2S0.0 l a r: c 200.0 a Marker 4 Marker 14 1i5Q❑ t R " v „ eMarker6 i= 100.0 Marker 32 Am`. o `Gage not 500 s `� working iii i ; - 4 O properly , t��— Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec i Gage/Gulf Mean Tide Ratios -2018 0.90 PASS & 0.80 030 DREDGING I Y Gage not ,r `� II ° I » working " , * Properly ... , 7, 0.60 . t4ry s ," ' ;JMarket 4 r . e050 _ . €_." Marker 14 040 4 J Marker 26 , 0.30 _ Marker 32 2 44, 0.20 a e •,, t-4,.- -- tntcat Stabitty 7 I 4;1 44 Patio ..:. - ,x, Range for.`0.00 0.00 .` °" ,... _ _ I.. , -- e:: Markers Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 4814. Gage/Gulf Mean Tide Ratios -2017 https://www.humistonandmoore.com/clampass-tide 1/2 12/4/2018 humistonandmoore I ClamPass-TIDE Agenda item#6b ��' ti �: Page2of3 ,„„,. _ .., 'lam°' _, . . .,a ,.. . mk,.—„ —. HUMISTON &MOORE 1 `� kliENGINEERS Home About H&M Services Projects Contact Careers Client Login c , ' Consulting Coastal Engineers tt m. l !< Marker 14 Gage/Gulf Mean Tide Ratios -2016 0.9 PASS T.S. 0.8 DREDGING T.S.COLIN HERMINE 0.7 co pMarkei 4 z u 0.5 Marker 14 0.4 s Marker 26 nrg 0.3 - u Marker 32 az 0.1 - i Gat alro markers �: ... w _ }an Feb Mar Apr May jun Jul Aug Sep Oct Nov Dec Definitions: Mean Tide Ratio:ratio of tide amplitude of gages over the tide amplitude from the Gulf of Mexico,averaged over a month.This ratio is representative of the pass's effectiveness in flushing water from the bay. The lower the ratio, the less efficient is flushing,indicating material accumualting in the pass. Mean Low Tide Lag: time difference between low tide in the Gulf of Mexico and at the gage's locations, averaged over a month in minutes.The time lag is also represenattive of the pass's effectiveness in flushing water from the bay.The higher the lag the less efficient is flushing,indicating material accumulating in the pass. Background dei Clam Pass is a small wave dominated inlet on the southwest coast of Florida that provides a tidal connection to 500 acres of the wetland preserve of Clam Bay Natural Resource Protection Area(NRPA).This preserve includes several interconnected bays . surrounded by extensive areas of mangrove wetlands. The preserve is a pristine environmental resource that is collectively known as Clam Bay.Clam Pass has gone through periods of inlet migration as well as closure,because the relatively small tidal prism for Clam Bay provides critical balance between tidal energy and littoral process at the inlet channel. Humiston & Moore Engineers provides professional engineering services to Pelican Bay Services Division of Collier County, Florida for Clam Pass and Clam Bay. Humiston & Moore Engineers provided engineering services to assist Turrell Hall & Associate in the development of the Clam Bay NRPA management plan of 1998 and the updated plan of 2014. The engineering services included the development of design criteria for the inlet stability and conditions for maintenance dredging to maintain i hydraulic efficiency and avoid potential inlet closure including. The implementation of the NRPA management plan includes various monitoring to maintain the health of the eco system. In addition to the ecological and biological monitoring of the bay system and its function as a protected environmental resource, the monitoring program includes hydraulic and physical monitoring of the inlet and bay system to monitor the stability of the pass and assess maintenance requirements.Monitoring of the hydraulic and physical conditions of the Clam Bay system continues according to the updated NRPA management plan. The hydraulic monitoring includes continuous water level and tidal data collection at 4 locations within the bay system. t F{ Tui Humisfan 8 Moore Engineers F,tr.,t.... 5a Hurn otes341=.=.a, u,,,;4 A 7, tasnc a';* _d 'roc, �Des+ v�� :ra�ita� / 9 394 x5 rN to , 2/2 https://www.humistonandmoore.com/clampass-tide M :=M I I I Ifi' I I I �' I I I ^�' I I Iry m a :.,........,_N — — .......IN N .. N — ._ _ — __gym _ N N N .-.... N �.. '....T.N '._.....,_...r(NY -..._YII —.........._ N —.... ....�N —N —N T--.. ..... N -...... :.......-,•- ry ,<::-_,_4 R .- -.._4 --- ..-. 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O —.. _., O Q —_.... -_..—.� AO 4.-- —_.. .:...- O _($ — _8 ._8 8 _1E �... ;..:_r — _8 — 8 -- . --r8 _.. .;....._$ — —8 .....—8 ._.... ..... 8 -r.... —8 • 1 1 1 1 1 't5 1 1 1 1 I 1 N O (V O N O (N G N O N O N O N O N O N line waves t4 JOVeIN 9Z reopen a Ali epi Agenda item#6e Page 1 of 2 HUMISTON &MOORE ', ENGINEERS 5679 Strand Court = COASTAL Naples, FL 34110 1 ENGINEERING DESIGN 239-594-2021 -Voice AND PERMITTING 239-594-2025-Fax December 21, 2018 Neil Dorrill, Administrator Collier County, Pelican Bay Services Division REF: Scope of Work for Coastal Engineering Professional Services Review of Clam Pass Management Plan Humiston & Moore Engineers proposes to provide the following Scope of Services to review The Clam Pass maintenance dredging program and evaluate the implementation of the 2015 update to Clam Bay NRPA Management Plan. The work will provide a review of the historic inlet dynamics,the maintenance dredging program to date, and the response of the inlet to dredging. This information will provide context for an assessment of the implementation of the 2015 NRPA Management Plan and maintenance dredging program. The assessment will identify long term trends in the system and provide recommendations for potential improvements to inlet management. The Professional Services to be performed under this SOW include: TASK 1: Review of historic inlet dynamics and maintenance dredging program. This task will compile representative historic datasets from Clam Pass and adjacent beaches to develop a long term perspective of the inlet and its response to dredging. The review and analysis of the inlet dynamics and maintenance dredging will begin with implementation of the 1999 Clam Bay NRPA Management Plan and consider the 2015 updates. The review will specifically include: • Background of Clam Pass geometry, including 7 dredging events and monitoring surveys. • Analysis of wave climate variability and tropical storms frequency. • Analysis of the maintenance dredging template and history. • Assessment of adjacent shoreline conditions and variability. • Assessment of ebb shoal conditions and variability. TASK 2: Cost analysis of the maintenance dredging program. This task will compile the dredging costs associated with the long term management of Clam Pass and provide context with regional inlets. The cost analysis will consider total costs, frequency of dredging, and quantity dredged, among other factors. F:\Collier\300-Clam-Pass\2019-Evaluation\2019CIamPass Plan Review-SOW.docx Agenda item#6e Page 2 of 2 TASK 3: Evaluation of past performance and recommended improvements This task will provide analysis of the permitted dredging template and potential adjustments to improve the efficiency of the maintenance dredging program. The analysis will be based on documented inlet changes post dredging events and the evolution of the inlet geometry, adjacent shoreline and ebb shoal, and costs. This will provide the basis for recommendations of potential improvements to inlet management. Deliverable: Progress meetings, presentations, and summary report Sincerely, HUMISTON &MOORE ENGINEERS Mohamed Dabees, Ph.D., P.E., D.CE. Vice President F:\Collier\300-Clam-Pass\2019-Evaluation\2019CIamPassPlanReview-SOW.docx Pelican Bay Services Division Board Regular Session Agenda item#6e-1 November 7,2018 Page 1 of 2 of time between maintenance dredge events. He commented that there is a"perception issue"resulting from the process of frequent requests for approval. of TDC funds on an emergency basis. He will discuss this issue again at the upcoming Clam Bay Committee and Budget Committee meetings. Ms.O'Brien commented that these concerns have not been expressed at BCC or TDC meetings as recent as Spring 2018. She also commented that we could do a better job of improving our timeline (process of obtaining BCC and TDC approval, obtaining bids for the project, and completing the dredge event). Dr. Ted Raja, representing the PBPOA and the Mangrove Action Group,commented on the history of dredging Clam Pass,and that dredging events are for the purpose of maintaining the health of the mangroves,not for the purposes of navigation or to obtain sand to benefit beaches. Ms.O'Brien motioned,Mr.Griffith seconded that the PBSD Board ask the Clam Bay Committee to explore the concerns raised by Mr. Casalanguida and bring a recommendation back to the PBSD Board. The motion carried unanimously. UPDATE ON STREETLIGHT PROJECT AND SIGN BID AWARD Mr. Dorrill commented that the streetlight project has been awarded and the contractor is expected to begin work on Nov. 13,with an expected completion in 90 days. Mr. Dorrill commented that the PBSD received four bids for our street sign replacement project,with A IS(American Infrastructure Services)being the lowest responsive bidder. The contract is being prepared and the expected award date is Dec. 11. The work may take up to a year to complete. US 41 BERM CLEAN-UP AND RESTORATION Mr. Dorrill commented that the plans and specifications for the US 41 berm landscape restoration project have been provided to the County Procurement Dept.,who will prepare a project solicitation to be put out for bid,hopefully within 30 days. GULF PARK DRIVE MEDIAN-CUT CONSTRUCTION AND RE-STRIPING Mr.Dorrill commented that the median-cut project is complete. He commented that the PBSD is in the process of obtaining Pelican Bay Foundation approval for new proposed signage which would restrict traffic on Gulf Park Dr. to a "right turn only" when exiting onto US 41. This issue will be discussed at the joint PBSD/PBF workshop on Nov. 12. BAY COLONY DUNE SWALE TOPOGRAPHIC SURVEY Mr. Dorrill commented that our engineer ABB has completed the Bay Colony beach dune swale topographic survey. The survey shows a large amount of sediment,willows,and mangroves in the swale. He commented that he will have a discussion of the construction drawings with the Water Management Committee at their next meeting. OAK LAKE SANCTUARY WEIR MODIFICATION Mr. Dorrill reported that we have received a SFWMD permit to effectuate the enlargement of the orifice at the weir adjacent to the Oak Lake Sanctuary community(to improve drainage). Quotes were received for the project,with Kyle Construction being the lowest responsive bidder for$12,625. Work will be scheduled when the lake level falls below the control elevation. 3 Agenda item#6e-1 Page 2 of 2 Frew ,'CasianciuklaNk'k TO7NcJOOTUl Cc allitaaaursQJsgIrutufloitattm.; saktet rEdik-age raw eaup Date: Mutts Odster LS aa ion Attadtmentw, irnane001onq Thank you becoming lit today with LiSa.t1 wanted to recap tte meeting so GM 3SSigp wale taskers ta MN staff to keep ma-ideas moving_ E missed thing cc E aro off a tittle with ow notes,„pleaSe tet knew O Maintenance facitity • Goal tt develop a shared use faCility master plan before the Chnstrhas break ad move that flawAt to beoanstruct.1:on ready by the fail e 2019 a Sean is to coordinate a aneetiOg with our faolifies team so we estalitsh a vszork team that can fwitile the detaifs as we move forward Sictewaiks Drain.me a Goal is to tran4tion the sidewdlis and drainage svStell'M outside the paned right o way to P50 W aldewaars are pretty straighgarward It Drainage.cutoff needs to he rebried O Sean wig wotkwilth GrA0 to get you a cam of our drafrage outfaM 041 the next 33 dal's w You need a map of these fccations and a spreaciset identirrOg them u j5 exhs*AM he usedas a reference document in the txansaCion • pesa ws going to work an developing the hroarizeiiI * earn Bay Managenent Ran o ThStopic is fad%to be at the Nomernber Pe511)meeting • Discussion Nal he had abort reviewing histodizat metheits frontaig the pass with the Rmee recent methods • The goat is to try and find corramn grand with the arccoada in order to manage stakehorder etp9mtations with the need for a more austainarlie maintenance pfara 8, We heed tto avoid the annual entergerzee dredking as the agencies and the public are beginning to question t approach ato going to ask 4teather to get us together again M mid-tkcember to maintain merneritum apooraptishing these 6'1h:fakes. &co wanted to thart.k you for working w]th interna controls anti racipg no the CiAnti-program. RespeUluk Nick Casakrnguida CoRier County,Depaty Manager 14,A ..0:7,14.C. itievcomxtzt 238-75241W 11•1111111M=111MIIMIIIM=NIF Agenda item#7a Page 1 of 1 Clam Bay Copper ug/L Collection Date CB1 CB2 CB3 CB4 CBS CB6 CB7 CB8 CB9 Report Date 6/22/2016 0.862 0.700 0.700 0.700 1.640 2.100 0.700 3.520 1.510 9/8/2016 7/20/2016 0.924 5.330 5.110 5.660 2.470 3.960 4.950 5.710 10.500 9/12/2016 7/20/2016 0.924 6.160 4.700 1.690 2.470 1.830 1.980 1.870 8.360 9/21/2016 8/25/2016 2.000 1.850 1.680 1.470 1.240 1.520 2.250 1.280 8.060 10/4/2016 9/20/2016 1.690 2.280 1.280 1.760 0.751 0.700 0.700 1.030 0.700 11/22/2016 10/12/2016 2.760 2.200 2.130 1.190 2.900 1.860 1.060 0.954 1.310 12/7/2016 11/9/2016 2.340 3.390 2.300 2.250 1.630 1.500 1.180 2.030 1.300 1/16/2017 12/6/2016 2.330 2.930 5.100 2.450 2.390 1.780 1.270 1.880 1.720 3/14/2017 1/19/2017 2.570 3.560 2.110 1.990 0.818 0.800 0.961 1.110 2.020 4/4/2017 2/23/2017 2.510 3.350 1.600 1.120 0.851 0.848 1.500 2.570 2.600 4/24/2017 3/21/2017 7.970 4.080 1.710 1.120 0.894 0.846 1.080 1.090 0.957 6/1/2017 4/18/2017 6.480 8.160 1.620 1.240 0.800 0.956 1.280 1.010 1.100 6/14/2017 5/24/2017 2.840 4.060 4.990 0.800 0.800 0.959 0.800 0.920 0.946 7/6/2017 6/21/2017 3.840 4.240 3.850 0.906 1.200 1.140 1.260 1.110 0.760 8/8/2017 7/13/2017 4.700 2.950 3.800 4.080 2.500 2.440 2.370 2.380 2.210 8/29/2017 8/14/2017 4.290 3.810 3.220 2.650 1.400 1.220 1.470 1.020 0.700 10/10/2017 10/4/2017 2.680 1.270 0.600 0.800 12.600 1.610 0.600 0.600 1/22/2018 11/28/2017 0.700 0.722 2.540 0.700 0.700 0.700 0.700 0.700 0.700 1/22/2018 12/12/2017 1.780 2.250 1.890 0.700 1.210 1.210 1.300 0.728 0.911 3/26/2018 1/8/2018 0.420 1.510 1.690 1.590 0.800 0.809 0.800 0.800 2.400 4/27/2018 2/6/2018 3.400 3.980 2.130 2.420 0.829 1.640 3.920 0.800 0.800 4/30/2018 3/22/2018 5.450 4.890 3.670 2.370 1.010 1.040 1.750 1.010 1.320 5/11/2018 4/4/2018 2.370 3.190 2.380 1.970 1.690 0.848 1.280 1.250 5.160 6/11/2018 5/8/2018 5.490 4.880 2.360 1.090 0.800 1.050 1.270 1.570 1.640 7/2/2018 6/6/2018 3.120 3.320 2.670 0.800 0.800 0.853 0.828 1.080 1.220 7/18/2018 7/17/2018 1.400 1.440 1.600 1.600 2.270 1.600 1.600 1.600 1.600 8/21/2018 8/15/2018 1.500 1.410 1.400 1.400 1.600 1.600 1.600 1.650 1.600 10/8/2018 9/13/2018 1.720 1.960 1.200 1.200 1.400 1.400 1.400 1.600 1.400 10/9/2018 10/15/2018 3.190 4.800 4.400 4.030 1.400 1.400 1.960 1.400 1.400 12/21/2018 \-.1 .,„. *.L.- ) ., -..q '..t. "t7 . -4i -"10 041 m'N -.3 0— t5 r4 1 -4) v•I C...) j t;di • J ---: ' 1, - .. r) Z. Z ---•c! I) I ! . 1 d --i- 2 ‘_ s 3 C7- C-- _ Jo cs-k rA C .t, /3 N 0 A -..., A r,<r;: u.srj ATu .J 0 c::1±"4:"«"; e't; ,"-gar` KV?L.S 6TO?'_? 6!O 'E a[8I+g 61 t3% w qa ,0 7.a.EN•Fsv w.reir5)j� 29Lxr.S4 i+`Y^'00:S 910? :?G% StO Jacitua. o ='�ic.Jek o tat SC:6 ? . SIOZ-..tagtualdas -G 0'3=6 c:0 E? :*s iltZ ie c. zyr a sped =puces Nti 00:6 S 0?`SZ L^� $ %'aunf uoissuz>U,m -lust-, 90 p12a6 &pt.rt4 `tk-a7 i'4{v 00•5 SIC? Z .. 810Z qzlii o`z*II-Hi p gioZ*-Part; - l iZ :NMA unoo ivawtlotanao asunoi :dnoig 2018 Clam Bay Annual Report 12.0 SUMMARY The Clam Bay estuary experienced fairly "normal" weather conditions during 2018. The system was not subject to a hurricane as in 2017, but a massive red tide event affected the southwest coast of Florida beginning in late August. The following are brief summaries of work completed by Earth Tech Environmental (ETE) in 2018 and recommendations for each major monitoring category: Mangrove Monitoring ETE monitored 21 mangrove plots within the Clam Bay estuary;eleven (11) plots that were previously established by Turrell, Hall & Associates, two (2) plots that were previously established by Lewis Environmental, and eight (8) plots that were previously established in historical mangrove die-off areas by ETE. In each plot,the mangrove species, diameter, abundance, and condition were recorded. Generally, the 2015 mangrove die-off areas have stabilized and do not appear to be expanding in the area. Overall, the mangrove plots appear to be relatively stable. Many of the monitoring plots were affected to varying degrees by Hurricane Irma, especially just west of the berm tram road, along the eastern side of the Clam Bay NRPA,though showed overall improvements in 2018. Plots TH5 and TH6 showed decline in 2018, possibly due to clogged channels nearby. Hand dug channels in these areas should be GPS mapped and targeted for maintenance in 2019 to facilitate water flow. Four(4)photo stations were installed east-northeast of Inner Clam Bay to document changes in this area following Hurricane Irma. All four stations appear to be slowly recovering and recruiting in 2018. Coastal Scrub Monitoring Overall, the coastal dune vegetation in Clam Bay is stable. There has been a general increase of beach naupaka (Scaevola taccada) within the coastal scrub habitat in Clam Bay. Beach naupaka is a Category 1 exotic plant as defined by the Florida Exotic Pest Plant Council's list of invasive plant species. It is known for supplanting native coastal vegetation, forming dense monoculture areas. Additionally, there are lesser amounts of exotic wedelia (Sphagneticola trilobata) mixed into the sea oats and beach sunflower groundcover,especially south of Clam Pass. ETE continues to target these areas in an attempt to get it under control. The coastal scrub habitat is home to a significant population of gopher tortoise.As noted last year,the gopher tortoise would benefit greatly if the beach naupaka were removed; management of these exotic vegetation infestations could improve the tortoise foraging habitat and help increase the overall gopher tortoise population. Seagrass Monitoring A new seagrass monitoring methodology was implemented in 2018, whereby fixed monitoring locations with quadrats were established. Overall coverage in 2018 was 3.87 acres, nearly identical to 3.85 acres in 2017. The southern portion of Clam Bay (Transect 1) contained no seagrass. This overall decrease is likely attributed to deeper, murky waters in this area, inhibiting sunlight.Similarly,very few benthic organisms were observed during this year's monitoring. Monitoring next year may give a better indication of any potential impacts from red tide or benefits from the Clam Pass dredging activities. Listed Species Monitoring ETE conducted a specific purpose survey to determine gopher tortoise (Gopherus polyphemus) utilization of habitat within the Clam Bay NRPA. A total of 162 potentially occupied burrows were identified during the survey. The gopher tortoise population was estimated at 81 individuals(adults&juveniles).This is very similar to the 2017 results: 168 potentially occupied burrows/84 individuals. ETE noted pockets of juvenile-sized burrows at multiple 102 locations, giving an idea of where breeding may be taking place. Abandoned burrows were also noted in the survey,which may include old,collapsed burrows or potential armadillo burrows. Management of foraging habitat within the coastal scrub is key to maintaining and growing the existing gopher tortoise population. ETE recommends monitoring the bird rookery in the north end of the estuary on a more regular basis in 2019 to better determine the population of birds using the island. Exotic Vegetation Monitoring The majority of exotic and nuisance vegetation in Clam Bay is located along the "margins" —the east side of the mangroves along the tram berm & the west side of the NRPA in the beach dunes. These areas are adjacent to the most human activity around the system. Exotics identified during the course of treatment events included but were not limited to air potato, alligator weed, Australian pine, balsam apple, bishop wood, Brazilian pepper, carrotwood,cattail,Cuban laurel fig,Java plum,seaside ma hoe,old world climbing fern,periwinkle,beach naupaka, shoebutton ardisia,strawberry guava, and wedelia. ETE has been targeting these fringe areas(exclusive of beach naupaka)throughout 2018. ETE utilizes GPS trackers to ensure coverage of areas by personnel in the field. Exotic vegetation control performed by ETE in 2018 included the Clam Bay NRPA, a 50-foot swath along the eastern side of the tram berm, and extensive work in the dune swale,just west of Bay Colony. One area,just west of the Commons is still getting intensive treatments to kill large trees and re-sprouts in this area. Water Level Monitoring Of note in looking at the summary graphs, is that the water levels in the wells are heavily influenced by the lunar cycle. This is especially evident during the dry season, when there were no recorded rain events, but there were significant changes in water levels (lasting 7-10 days)that are apparently associated with full and new moons. On the graph,full moons are indicated by the upper curves at+1,the new moons by the lower curves at-1. Wells number 1 and 3 indicated similar water level trends with the previous two years. Well number 2 seemed to indicate a slight decrease in average water levels over the last two years. Rainfall levels in 2018 were slightly lower than the last two years. The highest 2018 water levels(-1.4 feet above ground)throughout the Clam Bay system occurred in early October when the system received over 3.2 inches of rain over a one-week period. The lowest the water reached in 2018 was approximately 1.5 feet below ground in mid-late February,which coincides with the area's dry season. Continued maintenance and monitoring of the water level loggers is important as they provide data critical to assessing the health of Clam Bay. Hand Dug Channel Maintenance In May and June 2018, ETE conducted extensive hand dug channel maintenance whereby approximately 5.5 miles of channels were cleared of vegetation, muck and debris to allow more sufficient drainage within the estuary. Several new channel segments were also dug to connect existing channels. The channel maintenance was conducted with hand tools to remove fallen and leaning logs, trees, limbs, muck and detritus from above and within the channels following Hurricane Irma. Debris material was moved away from the channels,though left in the estuary.After channel maintenance activities were completed,THA performed follow-up inspections to verify that the maintenance work had been completed. i. _ _ r It 103 Recreation Facilities Monitoring Canoe channel marker#12 (sign &post)was uprooted during Hurricane Irma and washed up in the mangroves on the south side of the pass.The post has since been removed,and the channel marker\sign needs to be reinstalled. All other markers and signage were found to be in good condition with no apparent issues. The four (4) tide stations located on channel markers #4, #14, #26, & #32 were maintained by ETE throughout 2018. During maintenance events,the solar panels and sensors were cleaned.The sensor at station#14 failed and was replaced in June of 2018. Tide station #4 recently failed and ETE is waiting for the replacement sensor from the vendor. It will be replaced within the next week or 10 days. Additionally, new modems will be installed at all four stations in the next month.The new modems are a requirement of the cellular provider as a result of outdated technology. Archaeological Site Monitoring No obvious signs of shell mounds were observed in the locations identified and no signs of human disturbance was observed. 13.0 REFERENCES Braun-Blanquet,J. Plant Sociology:The Study of Plant Communities. Hafner, London. 1965. Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Bureau of Entomology, Nematology & Plant Pathology-Botany Section, "Notes on Florida's Endangered and Threatened Plants", Contribution 38, 5th Edition-2010. "Florida's Endangered Species" - Official List. Florida Fist and Wildlife Conservation Commission. Updated May 2017. Florida Land Use, Cover and Forms Classification (FLUCCS) Handbook. Florida Department of Transportation. January 1999. http://www.fdot.gov/geospatial/documentsandpubs/fluccmanual1999.pdf http://www.fdot.gov/geospatial/doc_pubs.shtm Turrell, Hall &Associates, Inc. "Clam Bay Annual Monitoring Report", December 2015. Turrell, Hall &Associates, Inc. "Clam Bay NRPA Management Plan,Version 6.5", November 2014. 104 31.A.2Packet Pg. 545Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 546Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 547Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 548Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 549Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 550Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 551Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 552Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 553Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 554Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 555Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 556Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 557Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 558Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 559Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 560Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 561Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 562Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 563Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 564Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 565Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 566Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 567Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 568Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 569Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 570Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 571Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 572Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019) 31.A.2Packet Pg. 573Attachment: Pelican Bay Services Division Board Agenda Packet - Jan. 7, 2019 (7722 : Pelican Bay Services Division Board - January 7, 2019)