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PBSD Water Management Minutes 05/08/2025PELICAN BAY SERVICES DIVISION WATER MANAGEMENT COMMITTEE MEETING MAY 8, 2025 The Water Management Committee of the Pelican Bay Services Division met on Thursday, May 8 at 9:30 a.m. at the Community Center at Pelican Bay, 8960 Hammock Oak Drive, Naples, Florida 34108. In attendance were: Water Management Cmte. Michael Rodburg, Chair Pelican Bay Services Division Staff Neil Dorrill, Administrator Dawn Brewer, Ops. Support Spec. II Chad Coleman, Deputy Director Darren Duprey, Supervisor — Field I Also Present Cindy Polke, PBSD Board Rick Swider Michael Weir Dave Greenfield, Supr. -Field II Karin Herrmann, Project Manager I Lisa Jacob, Project Manager II Barbara Shea, Admin. Support Spec. II Greg Stone, PBSD Board APPROVED AGENDA (AS PRESENTED) 1. Pledge of Allegiance 2. Roll call 3. Agenda approval 4. Approval of 2/25/25 Water• Management & Clam Bay Committee meeting minutes 5. Audience comments 6. Pelican Bay stormwater management presentation and discussion 7. Adjournment ROLL CALL All members were present and a quorum was established. AGENDA APPROVAL Mr. Weir motioned, Mr. Swider seconded to approve the agenda as presented. The motion carried unanimously. APPROVAL OF 2/25/2025 WATER MANAGEMENT AND CLAM BAY COMMITTEE MEETING MINUTES Pelican Bay Services Division Water Management Committee Meeting May 8, 2025 Mr. Swider motioned, Mr. Weir seconded to approve the 2/25/25 Water Management and Clam Bay Committee meeting minutes as presented. The motion carried unanimously. AUDIENCE COMMENTS None PELICAN BAY STORMWATER MANAGEMENT PRESENTATION &DISCUSSION Mr. Rodburg commented that this meeting was intended as an educational forum to address issues relating to how the PBSD and other members of the community can, must, and should manage our stormwater, intended for the presidents of Pelican Bay HOA's and PB Property Managers. His opening comments included the following. • Stormwater management has become an issue in the forefront since Hurricane Ian, during which there was a great amount of flooding and property damage. • A 1996 Wilson Miller report entitled, "Pelican Bay Water Management Systems," provides a description of our water management system and how it really works. • Rainfall and irrigation water either seeps into the ground or flows by gravity into a sheet flow or a drain flow and eventually flows into the berm, which may be considered an engineering marvel. The berm is designed to protect the mangroves from excessive stormwater through a number of weirs (along the berm), set by standards, to control water flow. • This meeting's PowerPoint presentation will be made available in print form to anyone who requests it. Mr. Coleman provided a PowerPoint presentation on Pelican Bay stormwater management which included the following. • The Pelican Bay community is divided into six drainage basins. • Drainage flows westward through the water management system towards the berm, and then towards the mangroves in Clam Bay. • A map of Pelican Bay basins showing water flow directions through a network of stormwater pipes was provided, identifying red and orange colored pipes (on the map) as the responsibility of the PBSD and green colored pipes as the responsibility of County Road Maintenance. • The PBSD does not own any property. The PBSD has drainage easements that provide access to private property to maintain adequate flow in each basin. PBSD easements were identified in yellow on a basin map. Some of the easements near the water management berm are sheet flow areas (not pipes). • Pelican Bay has 67 lakes; 47 are managed by the PBSD. • A map of control structures along the berm, and photos of a few control structures were provided. • Photos of a hand -dug channel (which assists in maintaining flow) and a sheet flow were provided. • A good rule of thumb: If water does not recede after 3 days from a regular storm event, there may be a drainage problem. Questions to be asked: Have you cleared excessive debris off the property? Are there branches and leaves clogging inlets or retention areas? Do you know where your drainage goes on your property? Have you had a professional clean all pipes and drains? Pelican Bay Services Division Water Management Committee Meeting May 8, 2025 • All condo associations/property managers should have their Site Development Plan (SDP) in their file. An original SDP can be found by contacting Collier County Growth Management at 239-252-2400. After obtaining your SDP, you may need to hire a licensed engineer to review site drainage and recommend improvements. • Associations need to maintain their own pipes and drainage regularly by hiring a licensed contractor that specializes in pipe inspection and restoration. The contractor needs Win Can type viewing and reporting capabilities in addition to a vac truck to clean and view pipes. • Associations need to maintain adequate flow to the PBSD drainage easement and make repairs to any pipes found to have issues. • If associations have questions about drainage they are encouraged to contact the PBSD at 239- 252-1355. ADDITIONAL AUDIENCE COMMENTS Mr. Ken Sidman questioned whether Hurricane Ian comprised the drainage system, possibly in hidden ways, and asked whether there is active monitoring of the system. Mr. Coleman commented that the main connectors and pipe -to -pipe connectors usually have conveyance and that we monitor the system continuously. Mr. Rodburg commented that we only perform repair/maintenance work when needed, and only in areas within our easements. He noted that the critical interface between the HOA's and the PBSD managed system is where problems develop. Mr. Rodburg commented that unfortunately we are unaware of how well property managers are maintaining their own water management systems. Mr. Rodburg commented that a bill now being proposed in the Florida legislature, if passed, would require periodic inspections of water management systems. Mr. Coleman clarified that if passed, this requirement would only apply to new construction. I-Ie noted that the PBSD now maintains master spreadsheets which track and document all of the work that we complete on our water management system. Mr. Sidman commented that about 30% of the high rises had flooding during Hurricanes Milton and Helene and questioned whether there is a problem with the master plan, and whether the existing water management system will be able to handle sea level rise, or is remediation required. He asked whether there has been any review of the adequacy of the master plan. Mr. Rodburg commented that our water management system is a passive gravity system and that no gravity -based system would be able to accommodate the levels of storm surge experienced during recent storms. Mr. Sidman questioned whether the slope behind the high rises has been altered by recent storms. Mr. Coleman commented that the PBF has been looking at lidar maps to see any changes. He noted that the PBSD will continue to monitor these areas and that property managers also need to monitor any changes. Mr. Rodburg commented that the PBSD has certain limited responsibilities, and will continue to work with the community to ensure that we have a seamless approach to stormwater issues. He noted that it appears that the PB community has not been prepared for recent storm events. Ms. Cindy Polke, PBSD Board member, asked the following questions, (1) In recent years, Clam Bay has been filled with additional tons of sand, and can no longer operate to hold all of our stormwater; when will sand be dredged out of Clam Bay? (2) Is there any filtration of the water entering the Pelican Bay water management system from external sources? and (3) Can we mandate the use of organic fertilizer? Mr. Coleman responded that the lakes are the filtration system for water entering the system. Mr. Rodburg responded that a County fertilizer ordinance specifies all issues relating to fertilizer and that we would hope all of our landscapers follow this ordinance. c Pelican Bay Services Division Water Management Committee Meeting May 8, 2025 Ms. Cindy Polke commented that many golf courses are lining their lakes with littoral shelves (known to be environmentally friendly) and recommended the installation of littorals in our PB lakes. Mr. Rodburg commented that littorals have been an ongoing discussion by the Water Management Committee and that we have deferred installing littorals in Oakmont Lake. He noted that littorals have pluses and minuses; minuses include difficulty to maintain and high cost. Mr. Rodburg commented that most of our golf course lakes have littorals. Fie suggested that a discussion of littorals is revisited by the committee, including obtaining input from our environmental consultants. Mr. Rodburg suggested that it is more difficult to install littorals in lakes with natural/sediment bottoms (as is the case in Pelican Bay) than in sand bottoms. Mr. Dorrill commented that about 7-10 years ago, a PBSD project included installing rip rap on the east side of the lake in Oak Lake Sanctuary, and a littoral shelf along the south side of the lake. Although the littoral plants have thrived, residents have not found them to be attractive. He noted that typically torpedo grass (an invasive species) invades the littorals, making them difficult to treat for removal. Ms. Polke commented that we need to recognize the existence of additional tons of sand in Clam Bay. Mr. Rodburg responded that this issue is off topic; however, we have 2025 plans in place for the dredging of Clam Pass and beach restoration and renourishment. Mr. Coleman commented that our template only allows us to dredge in Sections A, B, and C in Clam Pass. He noted that we are waiting on a construction plan from our coastal engineer in order to go out for bid for our dredging project, and therefore we have no firm scheduled date for the dredge. Mr. Coleman commented that our target date is the November/December timeframe, after the end of turtle nesting season. Mr. Rodburg commented that as soon as we receive approvals from the SFWMD and the Florida Fish & Wildlife Conservation Commission, a contractor will be mobilized to reclaim as much sand as possible from behind the dune. Mr. Rodburg commented that it has been a pleasure chairing this committee, and that he will continue on as chair of the Clam Bay Committee. Mr. Swider will take over as chair of the Water Management Committee. The meeting was adjourned at 10:03 a.m. Michael Rodburg, C ai Minutes approved �—as presented OR"as amended ON date