1117 East Robinson Street Orlando, Florida 32801 Phone: 407-425-0452 www.cphengineers.com Logo Concept_FINAL_rgb Memo Date: Date: To: Organization: From: Re: CPH Job No.: MEMBERS OF THE BOARD: This is to serve as the Chief Engineer's Annual Report to the Board of Supervisors as required under Chapter 298, Florida Statutes. As such, this report serves as a brief summary of the activities of the Engineer from March 2024 to March 2025. This report is for submission to the Board of Supervisors at the June 2025 meeting. The following is a list and brief summary of the items on which the District Engineer worked on or was involved with: 1) Reviewed and tabulated monthly water quality data. The general level of water quality is satisfactory. A copy of the sampling analysis results for the fiscal year 2024/25 is attached. We compared the Total Solids reported to the values from previous reports. The values this year were similar to the values from previous years. There were several instances of higher than normal values for nitrogen and phosphorus, but those were outliers compared to other testing results and they were only slightly above other values. The spike appears large, but we are dealing with relatively small numbers so the small changes are exaggerated on the chart. We do not have a concern with the sampling results. 2) Made periodic field inspections as requested by the District Director while in the area for various meetings regarding permits and ongoing construction activities. 3) Provided general coordination, liaison, and technical advice to landowners, developers and their engineering representatives on design criteria, regulations, and other matters pertinent to the District's business. 4) Oversaw repairs to District facilities by contractors, such as washout repairs, cleaning and general maintenance, new facility construction. 5) The Engineer prepared for and attended regular board meetings of the District. 6) Mr. George Flint, Mr. Dan Brown and myself conducted the annual inspection of the District’s facilities on Monday, November 4, 2024, with several follow-up inspections by David E. Mahler to determine their operational condition. The projects we inspected this year were primarily the original VWCD ponds, structures and canals. A summary of our annual inspection is listed in Attachment II. 7) Attended NPDES meetings held by Orange County Environmental Protection Department. 8) Permit applications and plans (shown on Attachment I) submitted by developers and others were reviewed by the District Engineer and checked for compliance with Valencia Water Control District requirements. In some cases, changes were recommended and upon resolution of the issues, the projects were recommended for approval to the District. Respectfully submitted, David E. Mahler, P.E. District Engineer Attachments: Attachment I Permit Review and Processing (Not including individual irrigation permits processed by District office.) PERMIT NUMBER DESCRIPTION APPROVED DATE Category I - Permits Issued Since May 2023 525 Westwood Hotel 06/13/23 526 Irrigation Permit 06/13/23 527 SeaWorld 2024 Project 07/11/23 528 Grand Pines PAC I-Drive Apartments 08/08/23 529 SWO 2023 Discovery Cove Pink Lady 01/10/24 530 SWOAQO 2024 Aquatica Parking Lot 01/10/24 531 Orangewood Boulevard Horizontal Directional Drill 03/12/24 532 16023 S. John Young Parkway Commercial Building 03/12/24 Through March 2024 is on 2024 Report. Category 1.1 – Permits Issued Since April 2024 533 Williamsburg Downs Phase II 01/08/25 534 Doubletree Hotel – Storm Pond Outfall Structure Replacement/Repair 02/07/25 Category II Permits on Hold None at Present Category III Permits with Work Not Acceptable to the District None at Present Category IV Permits in Process None at Present Category V Projects Reviewed - No Permit Required None at Present 1117 East Robinson Street Orlando, Florida 32801 Phone: 407.425.0452 Fax: 407.648.1036 www.cphengineers.com Memo Attachment II To: Board of Directors Organization: Valencia Water Control District From: David E. Mahler, P.E., District Engineer Re: Annual Inspection by District Engineer – FY 2025 CPH Job No.: 6816.07 The main annual inspection was performed on Monday November 4, 2024. Present for this inspection were George Flint, Dan Brown and myself. The annual inspection for 2025 is comprised of the inspection date noted above conducted throughout the District. On November 4th we drove to the various locations within the District as part of the Annual Inspection to review the current condition of the canals and the structures, and to discuss issues related to the condition and maintenance of the system. The weather was clear. For the 2025 inspections, a total of 45,944 lineal feet of canals were inspected. In addition to the canals, we also inspected 18 ponds, five (5) Amil gates and one weir structure that are owned and maintained by the District. The following sites were visited, and the conditions of the facilities are described below. C-1 Canal The northwest end of the C1, canal where the storm pipe enters off of Central Florida Parkway was still under repair by Orange County Public Works at the time of the inspection. The work has been completed by the contractor, but the size and elevation of the replaced pipe is in question. Survey as-built data has been requested from the County to confirm information. Orange County Utilities selected a contractor to replace the aerial pipe crossing of the C-1 east of International Drive and that work is underway. The project schedule from the Contractor indicates that the work should be substantially complete by September 29, 2025. The water control structure on the north side of the C-1 just east of International Drive is still in need of replacement. This is the developments outfall structure and not the responsibility of the District, however, we may want to look at replacing it due to the problems that may result from complete failure of the structure. There were several areas of sedimentation deposits of silt/sand into the C-1 canal at the points of discharge of the Paradiso Grand Development. The developer was notified of the conditions and they had their contractor come out and remove the sedimentation. The remainder of the C1 was in generally good condition. The S-101 and S-102 are in generally good condition. The main headwalls still have minor leaking at several of the joints but do not appear to have gotten any worse from previous inspections so there is not currently a need for any repairs at this time. The leak on the S-102 is being monitored and if it get worse, we can have a repair made to stop the leak. On the south side of the S-102 there was erosion occurring around the pile cap. This area has had additional dirt installed and the area was regraded. C-3 Canal The canal is generally in good condition, the southwest end across from the outfall weir still has a large amount of vegetation most of the area of the canal. We will need to coordinate getting the area sprayed. He power company is using the driving surface of the C-3 on the east side of the canal to access their facilities that they are working on. We will need to monitor the area to make sure that any damage to the Districts facilities Is noted and they are made to repair those damages. The overflow structure is doing fine. C-4 Canal The canal is in fair condition. The water level control structure was blocked by vegetation causing the water level to rise and cause a small washout on the north side of the structure. A quote was requested to clean the vegetation blocking the structure and clean the vegetation in the canal upstream of the structure. The outfall control structure owned and maintained by Doubletree failed and a request was sent to the owner to perform repairs of the structure. Initially, the owner was not getting the structure repaired so the situation was forwarded on to Orange County EPD for enforcement action. The property owner then retained an engineer to design the repairs and then a contractor was hired to perform the repairs. The work on the structure is substantially complete. The vegetation in the Sea World pond at the west end of the C-4 canal still needs to be cleaned. Even the small cleared area along the outer edges of the pond are starting to grow back. C-5 Canal and S501 The C-5 Canal appeared to be in fair condition. The area from the C-4 to Sea Harbor Drive has a significant amount of sedimentation. The amount of sedimentation is almost blocking the pipe under Sea Harbor, so a contractor was hired to remove approximately 100 feet of the sedimentation immediately north of the pipe. The remainder of the C-5 to the C-4 will still need to have the sedimentation removed. The Area of the C-5 canal on the Sea World property has a number of locations that are still needing to be repaired. The wetland outfall at the south end of the C-5 is still holding up well. There were some areas of minor erosion on the upstream side of the S501 structure. Plus there was a large amount of sedimentation upstream of the structure that needed to be cleaned out of the canal. A contractor was selected to remove the sedimentation and place rip-rap rubble into the area of the erosion. There is also erosion occurring just upstream of the C-1 canal. The water appears to be coming from the wetland and flowing over the bank. A more detailed inspection will be performed to determine the cause/source of the water. C-6 Canal and S-601 The C-6 Canal is in generally good condition. The water hyacinths in the canal still come and go based on the wind and flow patterns of the canal. Structure S-601 is in good condition. This is considered a major outfall location by the NPDES program and is required to be inspected on a regular basis. Inspection of this outfall will be noted on the NPDES annual report. S-901 Structure This canal towards Area 1 pond is in good condition. Structure S-901 is in fair condition and looks to be operating satisfactorily. The overflow weir from the C-10 to the Area 1 pond, west of Gifford Blvd, still needs to have repairs made by filling the void under the structure with grout or foam filler. There have been no visible signs of degradation since last year. C-10 Canal The C-10 is for the most part in fair to good condition. The areas previously noted just west of Orangewood Blvd. is continuing to get worse and this project will be put out to bid this year. The area of the canal bank on the north side opposite of the Tract F outfall still shows signs of erosion to the bank, but does not appear to have gotten worse from last year. The vegetation looks to be established and therefore this area is not requiring immediate repair. The remainder of Tract F looks to be in good condition. The area at the west end of the canal at the Beachline has a significant amount of vegetation in the flow line of the canal. Due to this potentially causing a flow problem for the conveyance system, a contractor was selected to clean the vegetation from the ditch to restore the flow line. This work has been completed. The area behind the old District office east of Orangewood Blvd., still shows signs of erosion; however, it has not gotten worse. Therefore, this is another area that we recommend restoring at the same time as the cleaning of the canal and bank reshaping occurs. C-11 Canal The Canal is generally in good condition. There is still a significant amount of trash and sediment coming from offsite across Orange Blossom Trail and we are continuing to clean up the trash and debris so that it does not continue down the canal. The bank erosion occurring just north of Taft Vineland Road and the S-1102 structure is getting worse and will need to have the erosion area repaired. In the short term, we will need to have a contractor come in and remove the sediment from the canal and use it to fill in the erosion area and then have the area resodded. The larger repair for the larger stretch of the canal bank is on the CIP program for repair. Erosion was occurring on the west side of the C-11 along John Young between the Beachline and Taft Vineland. This erosion was backfilled and regraded. Further down the canal to the west, sediment is continuing to build up in the canal just west of where the flow from Orlando Central Park comes into the C-11. This sedimentation will need to be removed from the canal. The sediment that is in the canal could be removed from the canal and placed on the bank to dry and then use this material at Taft Vineland to repair the erosion along the north and east bank and improvements to the access point. The S-1101 & S-1102 structures are in good condition. C-12 Canal The Canal is generally in good condition. The water control structures are still missing the level control boards, but this does not adversely affect the operation of the canal, so there is not really a need to have them replaced. Deer Creek Ponds 1A, 1B, 2 and 3 These four ponds are in good general condition. Deer Creek Pond 4 Deer Creek pond 4 is in good condition. The discharge structure and piping from Pond 4 is also considered a major outfall location. The outfall structure and piping are in good condition. Deer Creek Pond 6 Deer Creek pond 6 is in good condition. Parkview Terrace The pond is in fair condition. This is one of the ponds identified in the pond report as needing to have the banks of the pond restored. As this is not a critical item, it will be scheduled as a routine maintenance/repair project in the future. Parkview North Pond The pond is generally in fair condition. Parkview Pointe Pond As noted in previous annual inspection reports as well as the specific pond evaluation report, this pond has significant erosion occurring in areas along the waterline. Erosion is also occurring around the headwalls, mitered end sections and pond outfall structure. Somerset Ponds 1 & 2 Both ponds and outfall structures are in good condition. Lake Ridge Village Area 1 Pond The pond and structures are in generally good condition. There was minor damage to the skimmer on the outfall structure. The skimmer was re-bolted to the structure. There is also some erosion occurring around the structure but not bad enough to warrant immediate repairs/backfill. This will be monitored and scheduled for repair in the future. Waterview Area 2 Pond The pond and structures are in generally good condition. The fish barrier is in good condition. The issues that were noted in the previous reports for the area between Central Florida Parkway and the Area 2 pond where the connection pipes go under the roadway to the Area 1 pond will still need to be repaired at some point. The erosion is still there but not worsening to cause a problem with drainage. Briarwood Townhomes Pond The pond is in good condition. There is some weed growth at the outfall that will be corrected once the mowing operations begin. Windsor Walk Ponds All three ponds are in good condition. Should there be any questions regarding the inspection or if more information is needed on any of the items noted, please let us know and we will provide this information.