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Agenda 01/26/2017 PELICAN BAY SERVICES DIVISION Municipal Services Taxing & Benefit Unit NOTICE OF PUBLIC MEETING JANUARY 26, 2017 THE WATER MANAGEMENT COMMITTEE OF THE PELICAN BAY SERVICES DIVISION WILL MEET AT 2:00 PM ON THURSDAY, JANUARY 26 AT THE PELICAN BAY SERVICES DIVISION, 3RD FLOOR OF THE SUNTRUST BUILDING, SUITE 302, LOCATED AT 801 LAUREL OAK DRIVE, NAPLES, FL 34108. AGENDA 1. Pledge of Allegiance 2. Roll call 3. Agenda approval 4. Approval of 11/18/16 meeting minutes 5. Audience comments 6. North berm restoration 7. Replacement of bahia sod at north end of the berm 8. Problems with existing solar powered aerators 9. 2017 aerator installation 10. Trial lakes report—what's working/not working 11. Status of"microfloc" testing 12. Proposal for dealing with lake bank erosion 13. Input from Collier County Presidents Council 14. Adjournment ANY PERSON WISHING TO SPEAK ON AN AGENDA ITEM WILL RECEIVE UP TO THREE (3) MINUTES PER ITEM TO ADDRESS THE BOARD. THE BOARD WILL SOLICIT PUBLIC COMMENTS ON SUBJECTS NOT ON THIS AGENDA AND ANY PERSON WISHING TO SPEAK WILL RECEIVE UP TO THREE (3) MINUTES. THE BOARD ENCOURAGES YOU TO SUBMIT YOUR COMMENTS IN WRITING IN ADVANCE OF THE MEETING. ANY PERSON WHO DECIDES TO APPEAL A DECISION OF THIS BOARD WILL NEED A RECORD OF THE PROCEEDING PERTAINING THERETO, AND THEREFORE MAY NEED TO ENSURE THAT A VERBATIM RECORD IS MADE, WHICH INCLUDES THE TESTIMONY AND EVIDENCE UPON WHICH THE APPEAL IS TO BE BASED. IF YOU ARE A PERSON WITH A DISABILITY WHO NEEDS AN ACCOMMODATION IN ORDER TO PARTICIPATE IN THIS MEETING YOU ARE ENTITLED TO THE PROVISION OF CERTAIN ASSISTANCE. PLEASE CONTACT THE PELICAN BAY SERVICES DIVISION AT (239) 597-1749 OR VISIT PELICANBAYSERVICESDIVISION.NET. 1/19/2017 1:05:20 PM PELICAN BAY SERVICES DIVISION WATER MANAGEMENT COMMITTEE MEETING NOVEMBER 18,2016 The Water Management Committee of the Pelican Bay Services Division met on Friday, November 18 at 11:00 a.m. at the SunTrust Bank Building, 801 Laurel Oak Drive, Suite 302, Naples, Florida 34108. The following members attended. Water Management Committee Scott Streckenbein Tom Cravens, Chairman Dave Trecker Pelican Bay Services Division Staff Mary McCaughtry, Operations Analyst (absent) Neil Dorrill, Administrator Lisa Jacob, Associate Project Manager Marion Bolick, Operations Manager Barbara Shea, Recording Secretary Also Present Jeremy Sterk, Earth Tech Environmental Susan O'Brien, PBSD Board APPROVED AGENDA (AS AMENDED) 1. Pledge of Allegiance 2. Roll call 3. Agenda approval 4. Approval of 10/20/16 meeting minutes - 5. Audience comments 6. Water quality status of lakes (recent reports) 7. Sediment analyses 8. Monitoring Clam Bay for the presence of herbicides used to treat algae in Pelican Bay lakes. 9. Cost-effectiveness of various treatments 10. More complete information on the "lake spray records" 11. Lakes selected for"microfloc"testing 1-7 (Naples Grande front lake) and 3-5 (The Club Clubhouse lake) A. Update on three lakes (add-on) 12. Plans to deal with lakebank erosion 13. Adjournment ROLL CALL All members were present and a quorum was established 1 Pelican Bay Services Division Water Management Committee Meeting November 18, 2016 AGENDA APPROVAL Mr. Streckenbein motioned, Dr. Trecker seconded to approve the agenda as amended with the addition of item #11A. The motion carried unanimously. APPROVAL OF 10/20/16 MEETING MINUTES Mr. Streckenbein motioned, Dr. Trecker seconded to approve the 10/20/16 meeting minutes as presented. The motion carried unanimously. AUDIENCE COMMENTS None WATER QUALITY STATUS OF LAKES (RECENT REPORTS) Dr. Trecker commented on the November 2016 report by CH2M Hill entitled, "Pelican Bay Stormwater Lakes Water Quality Monitoring Program: August 2016 Sampling Event Data Review" and highlighted that there has essentially been no change in total nitrogen and total phosphorus in Pelican Bay lakes since 2011. Mr. Cravens commented that all of the continual education of PB residents over the last five years has resulted in no reduction in nutrients. Dr. Trecker commented on a telephone conversation he had with Bill Morris who heads a water management group in Pelican Pointe, a community located just north of Venice, FL, and commented on their experiences/recommendations/discoveries on aeration, littoral plantings, chemicals, recycled water, phosphate-containing fertilizers, blue tilapia and shoreline buffers. SEDIMENT ANALYSES Dr. Trecker reviewed current lake sediment data in ten lakes as compared to April 2016 and August 2013. He noted that little change is apparent. His conclusions were, (1) nearly all lake copper (over 99.99%) is in the sediment, (2) soluble copper levels in Clam Bay remain low, (3) high levels of sediment phosphorus (94 to over 99%) and steady levels of soluble phosphorus continue to fuel algae growth, and (4) since sediment levels in most lakes tested remain very low at 1-3% (although levels in lakes 2-9, 2-12, and 1-2 show levels of 13-20%), it appears dredging will not be needed for decades. MONITORING CLAM BAY FOR THE PRESENCE OF HERBICIDES USED TO TREAT ALGAE IN PELICAN BAY LAKES Mr. Cravens commented on the opinion received from Mr. Donn Brown, President of Earth Tech Environmental concerning adverse affects from herbicides (Hydrothol 191, Tribune, and Rodeo) to Clam Bay: Mr. Brown's opinion is that he would find it highly unlikely that these herbicides could be linked to the die-off in Clam Bay since these chemicals have a half-life of 1- 5 days and therefore, dissipate through microbial degradation. COST-EFECTIVENESS OF VARIOUS TREATMENTS & MORE COMPLETE INFORMATION ON THE "LAKE SPRAY RECORDS" Mr. Cravens commented on staff's continued work on cost analyses of various lake treatments. 2 Pelican Bay Services Division Water Management Committee Meeting November 18, 2016 LAKES SELECTED FOR "MICROFLOC" TESTING Mr. Bolick commented that the Naples Grande front lake and the Club Clubhouse lake have been selected for "microfloc" testing. Ms. Jacob reported that a CH2M Hill proposal for a "microfloc"trial in two test lakes has been requested but not received. UPDATE ON THREE LAKES (ADD-ON) Mr. Cravens provided a powerpoint presentation update on three lakes: (1) Ridgewood Park Island Lake: Mr. Cravens provided photos of apparent surface microcystis (cyanobacteria) on this lake which was restocked with blue tilapia in July. Mr. Bolick commented that this lake will be treated with peroxide within the next few days and that the lake is scheduled for an aerator installation during this fiscal year. (2) St. Maarten Lake: Mr. Cravens provided photos of surface algae on this lake, despite the lake having four aerators. Mr. Bolick commented that this lake will be sprayed within the next few days. (3) Community Center Lake: Mr. Cravens provided photos of this lake which was restocked with blue tilapia in July. No algae was observed. The committee suggested that staff obtain a list of communities (from our tilapia vendor) using blue tilapia (to treat algae) to contact to explore their experience with blue tilapia. Dr. Trecker announced that on Dec. 9 the President's Council will conduct an informal discussion of lake management for information sharing. Dr. Trecker will attend. PLANS TO DEAL WITH LAKEBANK EROSION Staff provided a proposal of$37,200 from Agnoli, Barber & Brundage, Inc. to provide (1) an analysis/inspection of 47 of the PBSD master system lakes, (2) a sound analysis method to determine the most logical order of future lake remediation based on risk assessment, and (3) provide a report summarizing findings and specifics of a future plan for lake remediation. Based on committee consensus, Mr. Dorrill will obtain a new ABB proposal for an updated study, cross section surveys, evaluation and proposed plan to mitigate lake bank erosion of only those lakes measured in 2014. ADJOURNMENT IThe meeting was adjourned at 12:00 p.m. Tom Cravens, Chairman Minutes approved [ ] as presented OR [ 1 as amended ON I ] date 3 Agenda Item#6 Page 1 of 4 Estimated Project Budget-Exhibit"A" Pelican Bay Services Division Storiuwater Management Consulting Services January 4,2017 Scope of Services Agnoli, Barber & Brundage, Inc., (ABB) is pleased to submit this proposal to render professional engineering services. Pelican Bay Services Division (PBSD) is requesting a proposal from ABB for engineering and surveying consulting for restoration of the north berm. The work area is the south side of the berm from the end of existing rip rap (north of Montencro) east to the culverts near the North Tram Station. Following is a description for the scope of services: 1. Survey Existing Conditions. We propose to cross section the north berm at $922 FF approximately 50 foot intervals along the 290' length. We estimate 6 new sections over the entire distance. We will obtain a typical section including the water, toe of slope (TOS), top of bank(TOB), and edge of pavement (EOP) for the south side of the berm. 2. Design and Construction Plans. We will follow the general intent of the original $2,923 FF design section from the "Water Management Plan Phase One Contracts E & F" plans by Stanley Hole & Associates, Sept. 1978. We will prepare the aerial plan view sheets and provide cross sections at each location showing existing conditions, and proposed improvements.We will provide typical restoration sections. We anticipate the restoration to consist of re-establishing the cross slope and installation of rip rap and fabric to be above the high water line. Conduct field visits as necessary. Review plans and comments from PBSD to coordinate final plans. Assist with construction documents. 3. South Florida Water Management District Permitting. Coordinate with SFWMD $2,016 TM staff on permitting or obtain authorization for no permit required. Conduct field meeting with compliance staff. Apply for SFWMD Compliance Letter Modification if necessary. 4. Survey Stake Out. We will provide construction stakeout which would be setting $760 FF stakes for a new TOB and a new TOS @ designed slope with finish grade on the south side, every 50 feet for 300' +/-. 5. Construction Services. Provide construction observation and assistance during $1,267 TM construction. o Review and comment on shop drawings/materials. a Attend one pre-construction meeting on site. ® Provide assistance to answer questions and coordinate during construction. ® Construction observation to the extent necessary to certify to owner/agencies. Page 2 K:\2016\I6-013I-PBSD North Berm\Correspondences\ProposaPProposai.docx Agenda Item#6 Page 2 of 4 Reimbursables Per Attached Rate Sheet Reimbursable expenses include expenses for blueprinting, copying services, data $100 TM base searches, color graphics, overnight express delivery service, long distance Estimate telephone calls, the cost of public meeting signs, noticing the public meeting by mail and by newspaper advertisement, and mailing lists from collier County Property appraisers Office. Total $7,988 FFTFM • TM=Time and Materials. Billing will be based on actual time and materials expended in accordance with our rate schedule. Budgets given will not be exceeded without prior authorization. Page 3 K:12016116-0131-PBS()North Berm\Correspondences\Proposa0Proposal.docx m+&©®j\ y&®� 1.lit . S° . t \$ . . % 10110 %b 0 ° \ s � g %\ > U \ 101 li ‘ ligoy%»\k Alt . • . r%\ A 0 S` •,k\ f��& i¥ tOt." $ Qom - -% It** 4 #�%/ k& % I a alai 1 . tk %t % ° %\\ -) »A v. ..> \ & c • � \\to %ta � f W $se,Q 111"\\ . , ® © �kf \ \ k %i ® > \ \ A7g%o •• \ � _ \ � % \ \ \ \ \ \ , \ \ \ \ \ \ t . } oo t % ` % \ % % \^ % ` % % \ % T. \ Q s » % A . % Q , % % \ \ \ \ ® * , y \ t t I \ § talk* o ƒ tailp� ot Agenda Item#6 Page 4 of 4 Agnoli,Barber&Brundage,Inc Engineer's Opinion of Probable Cost January 3,2017 Pelican Bay North Berm Restoration Engineer's Preliminary Opinion of Cost Item No. Description Unit Quantity Unit Total Cott Cost 1 MOBILIZATION LS 1 S5,000.00 S5,000.00 2 CLEARING,EXCAVATION AND GRADING LS I S5,000.00 55,000.00 3 FILL MATERIAL(INCLUDES 25%COMPACTION)(2'x 6'x 290') CY 65 550.00 S3,250.00 4 RIP•RAP WITH FILTER FABRIC(8'8 290') SY 260 523.00 56,500.00 5 SOD(BAHIA)(8'x 290') SY 260 53.00 5780.00 6 DOUBLE ROW SILT FENCE LF 350 52.00 S700,00 7 STAKED 1 URBID1FY BARRIER(PER SECTION)'MISC.EROSION CONTROL IT 400 515.00 S6,000.00 TOTAL 527,230.00 20%CONTINGENCY 55,416.00 TOTAL 110%OF PROBABLE COST 532,676.00 Agenda Iteen#6-1 1 Page 1 of 1 j F -o,c r ,,'�'ms's;' .� i V ''' .,' 7'''a *e g@t• ^€ e t $ a 0 ; '• -- .,..,..,01.„,i.,, „In ,..... ,4,,;throit....,41' , 4,—,t . v .tee .. ...r' Vis � - " � �y fir-. „zs' , F-. y d _ # sr '. f t t a a { C e. y .� .F, tet ,.,, _ , ;e, 4 tp' s ..yrs^"" , - raw 'u ,w ar '4s F\d\jay t� ", e .- �r4,;,,---4--'14L .17.' 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Agenda Item#7 Page 1 of 3 JacobLisa From: Jim Carr[jim.carr@abbinc.com] Sent: Monday, December 14, 2015 10:48 AM To: ResnickLisa Cc: BolickMarion Subject: North Berm stabilization/slope Attachments: Existing bank north berm IMG_5030.JPG; Existing bank north berm IMG_5098.JPG Lisa, We reviewed the west side(mangrove side)of the north berm slope per your request and concern about possible erosion. Based on a few site visits last week and our meeting on site Friday morning Dec. 11, it appears that the water level on the west side rises with tidal fluctuation,which deposits soil (dark mud)on the rock rip rap. In several locations the soil saturation and mud also occurs behind the rock at the edge of the grass bank and the grass is not growing all the way to the edge of the rocks. We checked the water level a few days during last week just prior to and after high tides but at each occurrence the water level did not reach the top of rock. I don't see that erosion is occurring because there is not evidence of the bank washing out, nor of any sand washing down from higher on the bank. There is a layer of fabric beneath the rock that is there to minimize and deter erosion and keep the dirt in place on the bank. It appears that the water rises at peak tides and stains most of the rocks up to or near the top of rock elevation. The soil is saturated in areas behind the rock which is too wet for the grass to root in that area. There are a couple of solutions that would improve the aesthetics and stabilization of the area behind the rock. One is to install a row of salt tolerant grass such as paspalum that would be more acclimated to brackish water. This species could be difficult to maintain and monitor,and to keep from growing between the rocks which might produce an irregular grass edge. Another option that might require less maintenance is to install a layer of rock higher up on the bank to provide a consistent grass edge. Fabric would not be necessary in this area. The rock could be placed on the bank where needed to blend in with the existing rock. Please let me know if you would like to explore these options and/or survey any of the existing bank elevations. Ja r, P.E. Agnoli,Barber&Brundage,Inc. 7400 Tarniarni Trail North,Suite 200 Naples,FL 34108 239.597.3111 ext 215 239.566.2203 fax 1 Agenda Item#7 Page 2 of 3 Agnoli,Barber&Brundage,Inc Engineer's Opinion of Probable Cost January 5,2016 PN 13-0127 Pelican Bay North Berm Rip-Rap Estimate(Sections 11 thru 59,West Side) Rein No. Description Unit Quantity Unit Total Cost Cost I MOBILIZATION EA 1 $5,000.00 $5,000.00 2 RIP-RAP 12"THICK 12-WIDE\5.030 I I') SY 1,117 $30.00 $33,510.00 TOTAL $38,510.00 10%CONTINGENCY $3,851.00 TOTAL 110%OF PROBABLE COST 542,361.00 Agenda Item#7 Page 3 of 3 T.,* +t, i 'ate � y,.. ; • :' ;1,,'` Y y ,,.1."'.4; ter � � L .R� �•' • � � y • 5 •�4 if . 5 r 1 ' ..'''.'''''. ''' '';'' '`‘'--''' ‘ i 4,' '' '1 k /' -1'‘.."‘"'"4' -i'. 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Y', a v 4.'''''''' $`.. ; A*i 'E jt Qom, ', 1 A' d.}� "tYy aY h ,. • :V•.....--4 I„.,-„-,, ,,,,,,,, ,,',04. i `”--„...,,, ..,_ !114.. 4 �<f� ,r'".4,...,*i 6,d,."€5. ". r r f J" R d„z#41, t^. " . 4,0'4 ,v!,,,,,-104". #aT,� -rile?it ',,,,,,o,.:�.I' a r '€ s i 11.t4471 � � (1,147,„1",:,.40•1' y,•. - '1,44%./.11-,.. ., r i ' E °�'d-f. a.'tsi rr°xf:' • ,_r .fie, # z!< „ :'z"s • �P a -. !4 3 + , r a>g / x Agenda Item#8 Page 1 of 1 03/07/2016 Pelican Bay Services District C/O Collier County Board of County Commissioners 3299 Tamiami Trail East,Suite 700 Naples,Florida 34112 Proposal ID#73964 Option#2—Solar Aeration System Two Plate Two plate diffuser solar aeration system—includes the following: 100%recycled plastic cabinet—driftwood color—25"x 25"x 19"deep with 4"to 9"legs—piano hinge(lockable).Floor of cabinet filled and glued with acoustical convoluted foam insulation 1"ATSM rated C 423-90A to the nearest 0.05 SA BINS/FT2 with a noise reduction coefficient to 0.40.OSHA approved soundproofing and UL-94 Rating.Two air outlet lines from compressors through cabinet with Y:"220 PSI rated flexible braided vinyl tubing.Each flexible tubing outlet shall be 4'-0"long and fitted with%"ID barb connects.All aeration systems shall be furnished with stainless steel Y:"wormdrive clamps to fit 5/16"-1/2"hose Model#67-06-1 to connect on shore and to duraplate(s)(DP-7)in lake. 1-Two valve anodized aluminum manifolds,brass adjustable valves with barb outlets. One Prostar 15 solar charge control with digital display. One Diehl controller—24 hour/7 day—digital timeswitch-24 volt SPST and SPDT switching—one channel 6.3 mm x 0.8 mm tab terminals. Connections comply with DIN 46244. One 2"x 8'aluminum masts for solar panel. One cooling fan for ventilation—37 CFM. One 24 vac eco flow compressor—brushless type—1 CFM open flow.85 CFM at 30"1.7 FLA at 24 DC.41W. One air filter—glass and filter type. Two DC 115-12 deep cycle AM6 batteries. One 3'x 5'solar panel 235 watts.Panel modules are equipped with an environmentally sealed junction box and PVC wire cables with Hosiden connectors for problem free intermodule connection.PV wire output cables meet 2011 NEC requirements for use with transformerless inverters and all modules are UL listed 1703 for USA and Canada.Mounting brackets are included. Solar Panel Technical Data:60 156 mm cells,-0/+2%(-0/+5)power output tolerance,47.9(+2 degrees Celsius)temperature NOCT,-0.32 voltage oc temp coefficient,C class fire rating,Hosiden connector type,+35(0.9)-47(1.2)inch cable length,75 pounds static load rating. Module circuitry:240 watts peak power,30.4 volts voltage at peak power,7.9 volts current at peak power,37.7 volts open circuit voltage,8.4 amps short circuit current,14.5%module area efficiency,600 volts max system voltage,15 amps series fuse rating,65.55 x 39.02 x 1.5(1665 x 991 x 38)inch(mm)dimensions(I x w x d),39.6(18)pounds(kg).The solar diffuser plates are self-cleaning,non-clogging,self-weighted,fish hook resistant,high oxygen transfer,9"EPOM diaphragm membrane(lifetime warranty)creates micro bubble emission for optimum air flow with laminar flow induction.1.0—3.0 CFM.Made of high impact polyethylene. • Two—Duraplate Diffusers 7"Disc style,designed specifically for solar compressor systems. This system is designed to operate 24 hours per day.Two year warranty on all parts.One year warranty on labor. co%o E cor--- O m co a r-I M >- -o \ v) v) v) v) O v) v) v) ,� C c O Na.) v al a) N N C a) N >- >- >- >- Z >- > } '"i 3 Q \i r1 to N r-I 0 >, V) O in v) O m C al >- >- Z a) > Z >- >- ri m ,-1ri cn N N r-i ri >. • N v) N v) v) N V) v) C ,i 1--- r-1 o >- • O N O O in O v) v) M C Z >- Z Z } Z v v CT r-I cm Li-) N ri Cr) >- N O N O 0 O 0 cl O 0 C r_i Z } Z Z Z Z >_ Z M = ,-ICO Ln rhi O -a \-I O v O O O v v N 0 ,- Z > Z Z Z >.. } >- m T...)- -..,_ a. N ,- N >- v) ,n cn v) O O v) U ' C O� a) } > > Z Z } } Om = r\ -1 -1 O N ,—I m >- ,-I ,-t >, v a) a) O v v v v `Li g ,n v, v) O v, O v) v) o C > > Z >- >- >- `� N ZCU CD CU z "? ri r1 (J•) O N ,-i ri v) N (n Cl) a (U O U V . 0 c Ii m E LO (0 +-, E 0 com Ft Q) 4J Cf) F- 0 -0 -0 o -0 C c C c i c c C c CO L i 1.. (D ate-+ co 5- 5- CO 3 a� QJ (B V) VI Q) v L f6 >. N N N Q) QJ L (U > QJ Q1 -- OA .> Q1 f6 QJ CD b.0 .j Q) co 4-+ Q Q. O c c Q Q v O c Z Z J CD U) N (% U Z Z J C.7 C.9 E (J U CU v __I 00 M (1 M M I J N co M M M Lf) C C N r-i r-1 N N N 7f Lf) (Il v) .--Ir-1 N N N if) (f) co OD m Agenda Item#11 Page 1 of 1 From: Rafael.Vazquez-Burney@CH2M.com [mailto:Rafael.Vazquez-Burney@CH2M.com] Sent: Friday,January 20, 2017 1:50 PM To: JacobLisa; Rick.Gorsira@CH2M.com Subject: RE: Microfloc Testing Dear Lisa, Thank you for reaching out regarding the Micro-Floc project. We have been doing some preliminary evaluations for dosing and will be ready to have a discussion with PBSD via phone very soon,within a week or so. I need to be out of the country next week, but I suggest we have a conference call within the first days of February. After that,we should be able to turn around the plan fairly quickly. We will schedule a call for the team to discuss the selected lakes to gain some detailed understanding of them. I look forward to talking to the Team. Best Regards, Rafael Vazquez-Burney,PE Senior Technologist East Region Technology Lead—Natural Treatment Systems D 813.281.7766 M 727.366.3301 CH2M 4350 West Cypress Street Suite 600 Tampa,FL 33607 www.ch2m.com I Linkedln i Twitter i Facebook From:JacobLisa [mailto:LisaJacob@colliergov.net] Sent: Friday,January 20, 2017 11:00 AM To: Gorsira, Rick/TPA<Rick.Gorsira@CH2M.com>;Vazquez-Burney, Rafael/TPA<Rafael.Vazquez- Burney@CH2M.com> Subject: Microfloc Testing [EXTERNAL] Good morning Rick and Rafael, When do you plan to schedule installing the equipment for the microfloc testing? Thanks, Lisa Lisa Jacob,MSM Project Manager,Associate Pelican Bay Services Division Municipal Service Taxing&Benefit Unit Collier County Government SunTrust Building,Third Floor,Suite 302 801 Laurel Oak Drive Naples,FL 34108 (239)597-1749 office (239)438-5239 cell lisajacobrdcolliergov.net Agenda Item#12-2 Page 1 of 31 LAKE REMEDIATION TECHNIQUES e . _ .1` a tis r '• c r* apt E t3 ' S g' "a 4zy ^' 4 bram"'""3t t it Agenda Item#12-2 Page 2 of 31 Lake Remediation o Purpose of Lake Remediation o Safety of homeowners and lawn maintenance staff. o To insure the structural integrity of the existing houses along the lake. o Counties and Water Management Districts require lakes to be maintained as originally permitted per state law. o Longevity o The materials and means selected must create a long lasting solution to the problem. Agenda Item#12-2 Page 3 of 31 Lake Remediation-Con't D Eliminate future erosion o Roof drains o Leaders that connect underground and are piped directly to the lake ID Access constraints o Construction access from land is ideal O Heavy machinery construction is possible from a barge in the lake but construction costs area high using this method O Homeowners are typically responsible for roof drains o In previous application contractors have left stubs at building corners Agenda Item#12-2 Page 4 of 31 During Construction — Geoweb- 1 ' ,,,,, f - *I4 Ply --la ' ye- ._.-....!.,.._,,.....,.. , ? grade lake b e < , Connect r:oof drain proper 4:1 slope leaders Agenda Item#12-2 Page 5 of 31 During Construction — Geoweb-2 _ ' It :litii,A. -Z"-,:i';'"--, 2s � x Install Filter Fabric Stretch and Anchor Geoweb Agenda Item#12-2 Page 6 of 31 During Construction — Geoweb-4 " .. . �om " ` "� �m �tiz." !, •�` ,. -," .. {{ ,./.0 , ., .... s"► '-- a' � waw � „,- .:� F � "Ra ) '�._`9r Yf- :at. Fill Geoweb with stone and soil Backfill with topsoil Agenda Iteem7o#1f22 31 Pag Post Construction ® Geoweb i Install/ex irrigation Enstct l sad and littoral plants Agenda Item#122 Page 8 of 31 eoweb/Littora I Zone - Section fl g lillibth eowner roof Horn --drain rifiii,` New sod/planted area j�• Littoral Plantings ( 1, / • Contractor installed roof 1 Water Elevation drain leader to lake' �� � �4 Existing Ground Surfacer Geoweb reinforced Littoral .. 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' � +E r'•-•:'''',4"' \ . ,,,* �'/ ' + <�' r y, ,»d + 1 +`. ky i1' ,G f y }- to \/(/ , �#"'>: r n � �� �r '11,4,.,;::31,--3'c" tf .a.s �, i. .- •-0.4-2,,,,I,_ .' r, lig ' � '� � a acs ,,:? r �;may Agenda Item#12-2 Page 22 of 31 I -...:.'iv's': , 8 A c u. ri y k _ °; >t 'r 4 ate»#1 -.� �` .„ �`._ .'.- •,. r- r'4-:;•77- - --.' . It Ift4.! I lit'-'-.;': '-c1";:'''7:-.- ''',-- %,..44-'-ic;2:::1'.,:..',--'ti--"' ,i‘ Ai -i--*.1r,,.4.4,-irk., ,.,::..,:„ ,....,;,. , n,.� r rsc" a # . Agenda Item#12-2 Page 23 0131 s After;... :. 0 , k c6 S 4 t t Ti }'11.': :.---,1,..,/ ; - .,' '' '.'.° ': ` 1 } 3 +4 to a ru �� i `!:,..',*.,•-•:-...-',4, .7'. ' \\.-{ '. ..: A416/.,. 'lot f _' ' ra i ''..!.,t'''',"'-',::,."'... t 4 . bol S 4 t^tE �� S{ i> 9 d.f .+� Q 0t o `7 ( »s .R A. a j;:.,,,,''.!:5i i .,..,%!:,.:4t,Is Y‘4,' 44( X I { 4 �to - v t'0:!;.„,.`,.,./..,:'''''s,. `'' fd +4,4 f'�i �a,';'- i P • 1: '' .. 3#$�. ;K t to F : ,•A-- t ';..W;'SX dgsa t'yl' 1y�4,t R,,-: i S .'T;'y^T�",szt,•€. ^` a x ^`'-.', vt s ray. 4:= .. # moi. Agenda Item*12-2 �I� Page 24 of 31 .4,7—.11111ti ' ''/' ' • s a k '`c'��, )11 '� ,..!,:..''',:::.',"-,':.r- '` 1 ::} .A g to k. ¢ �y3 4 �'# -,,„i'� et� �t�.:`f 1'S. "� ';, :i sma f t -w .r t � � �tt#`' zit !� - 1,� '' .y,,, ”'' Y ^ yr `Ait,. -.4k ,`' 1 ,+�t , # '„C p 'f{,,, rµ�#. ,,:i, ,,,,.,...4„,,,,_,:,..„....,,,,,,,,,,,,,,.. „, a l f: '4' "k44,ge y � ri q 1' x 3$, w j,� , P t C-#'Y..r 1Gi1`rI *3,,,.,!,f,,,,,„*,,,,, ,1~,t',” ` . '� yj � t �y t r• t �� r /{, 1 a��� �'° �`i��`+ F +R 47 � a t .'' 3a�; � .. � �+ � I �41 J ���, � �� x}fie f�< #r s.,�,=1wr 9`��t� v 1 h ..-.. * � � �� ..,t,-, .; � z't+t>!r ;� a�,f,�d�l.�'� �1 f` *�s ,rR��,.tv ",c .� � �-1��f .>. `44� t ft�s ' a f'`` Ps< i�� l}i, tif 1l�dl _'rs x.4 Agenda Item#12-2 Page 25 of 31 After i r s 1 s •r * ,- �' .. IN .sh : '...."::''''4'04::;,!11: r � q r° 09� � % ;l q fis'-'''',� .��� '''':,..-.1:\ d 'a p �j • v. 4'; 0_ ' t�t ���� �o-: r4 ; 'gi R !�` , '�4.! k`7 .�m,1y4, q, ' }ra � � -1- a ,<vAg4�� �xi '''i1ir�a s iTA� 3 " lars,,,,,--,-./,,,-, .-2: i , vr s4 t', 6 F T� � �� z m c ' ',.:,4,,1'4'''C',„,‘ a t ^` �' e ,g of `..0:k'�J4Sy Al =d y 'df �j, .(---4:,;:s1-4% 1 d g" 44�� ' t'/'.z.'s4,:itA ` tion ., ,r Agenda Item#12-2 Page 26 of 31 (rn c K.t " y .f ..y it ' a- y i, 6 -''''''t.:*"'''' ,,.:.. a vnx" ,." hL Y '#r C • . ` .�, w ' F' ° X „C a."Y,« 'eag-4 : n 2.:,r ars :� 4. , `< _,� ? c s le� - r�' i :.k‘ap(t-',V,iaN9.7:* '',"k'i qr ,}?x4 s `3 s - .f Agenda Item#12-2 Page 27 of 31 After ';0,0 - .4L - , 1•4- 33. - - 2": ii31,41.444111-110714ftert7,7."."-,-...??1,4,3ipt Agenda Item#12-2 Page 28 of 31 Design Criteria o Boundary Conditions o Safety Considerations O Easements a Provide safe egress from lake o Constructability 0 Property Lines 0 Existing Trees 0 Select Design ci 0 Floor Slabs, Patios & Pools Site Access o SFWMD Permit Limitations a Equipment to be used O Lake Volume ciCost Littoral Zone Plantings 0 Structures 44) • -7(77 Agenda Item#12-2 Page 29 01 31 Roof Drain Tie-in ail! 0 Contractor shall tie-in IIIIIIIIII. existing roof drain leaders IWO Gtoecoownneebct to new outlets in o In most cases homes have .,... existing roof drains, in some instances the \ ' , homeowner will be responsible for installing \ - ...---- gutters at the rear of the ,--- house and connection to the inlets at the lot line NN, provided by the contractor. :,..'N, 4,,,,,, Agenda Item#12-2 Page 30 01 31 Littoral Zone o Edge of the lake bank that is moderately graded so as to accommodate plants, fish and wildlife. ° 0 401100P. 0 Benefits of a littoral area: ...... ',- '-'-ii, (tttiwi',1t7 o Uptake of nutrients - , * - '..`*-4 .( which improves water '1, 4, : a ... _ _. quality i , o Increased wildlife , 4 : sN ' 1, _ ' o Creates a more natural -- ..-.2.,•‘• - 'fli'Att.-- look .. ,,,,Y.,.....i a Stabilizes lake bank and ' '',1..:,',','".'"'1".:" ?"--r, , i4S14.„,.::,kt ? ":-..f11, r-'. .,..,.. NP :44.1. limits erosion potential -- 4. . . *. :4,4't .ii t Vi'It ',...1. -4 ,*- 4:, "'„fr 11 , 4'1-4 .* ..:0„,„,,, .,", ' , ,0- ,•. i ,i,. : ,",..,f, 1,"-1 , '„,, .0:;, ' Agenda Item#12-2 Page 31 0131 The End — Questions? ✓1 O to M .o L!1 O O Q • O M M 'cr..; O� a C• M N N M O ^ b9 69 b9 69 bH d9 �n 1� O , �O = CO m T O V'1 O LP1 O m �O ...•G ^ ^ O i _ 0 a N' i O D o a c E co. `o a - _o'' a — a) = L _a .3 0 c0 m o o- b s = c Q o to to v. by 0. m V'1 V1 M Co 04) - c=. 1 Q O C N — O N C = O a) N V T y QJ ,n O i 0_ = i O C0. '� b9 64 b9 V9 !A O = = O 0 0 0 0 0 0 - Ks L!, v-1 v"1 Lry L.4.-' 1 ` u v v v v v - a 17,- = a1• c V C O = C G C Q. w. Q. C- C a a1 a1 0 c-/� ts3 tv ery • Lo o — v1 0� o v1 �n = `c M N V. O r•-• . v1 N N a .O d = a> a1 c a y _ o a1 = a� o c = = L J = aJ O .r.. O C..+ = a) C n a) `.- 'T<K E = = C C ,n O a a a) = Z c , o = = T o a o o > -= _ - La a, a1 = a1 • a Q o o 4'c -a m E o _ v o = ,.„- s L-, = „o T CO a o = u •- C O ••- Q T - = • c y = c o �G N 1.(-1 - M a m a u J C o ED J 3 T a� o a C T m C - O o_ a) = C V'1 N C'''' c+1 • fl_ i v -,L-) COm a)- In Q) O 0_ Z N n --ri — •M 0 rel cA C toit 3 v pY 0 b � O 4) w O c a5 0 'v -- I. r ter► o I w„: . ll co o � o 0 j on / •Gv 4.1 - , U ':„-.. 'O C 0 U Lake# Item Task Description Fee Type 5-1 1 Initial on site inspection, gather information plats, construction plans and SFWMD permits. $500 TM Preliminary meetings. Design survey cross sections. ABB will provide design survey cross sections data of the 2 existing lake bank conditions. ABB will include the location of the existing buildings along $7,900 TM the lake bank in areas of needed repair. ABB will obtain the floor elevation of the building and will provide elevation and location of any pool decks or patio/lanais. 3 Engineering Design and product selection. Aide the Community association in $1,400 TM communicating the proposed solution to the individual property owners/ association(s). 4 Design plan (includes stormwater plan). Plans include restoration and littoral planting plan. $6,400 LS Includes easement location. 5 Permit plans with Collier County and SFWMD. $4,500 TM 6 Produce construction estimate,bid documents/specifications. $1,600 LS 7 Review bids and make recommendations. $1,400 TM 8 Provide construction observation. $2,600 TM 9 Construction Progress Meetings $1,800 TM 10 Final certification to SFWMD on permit mod. Includes survey of improvements. $1.800 LS TOTAL $29,900 MT -- P - O C w a M Tu a _,r "iarn°a o p pm o a c-o c - w WC H❑ o °i m eo ry a •- T '� c y c� �- v 'c a aio m c T v a •c FF zc •- c vu >- g',T f, i o a . c . 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