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Mr. Himanshu H. Mehta, P.E. 21 May 2025 Page 4 Geosyntec consultants Geosyntec will conduct a round of groundwater level measurements in accordance with the sampling plan summarized in the 2024 Annual GMR concurrent with each semi-annual groundwater sampling event (budgeted for 1 day with 2 -person field team for each event). Depth to groundwater measurements will be recorded to the nearest 0.01 -ft in each monitoring well. Overall, for field activities, budget has been included for 6 field days with 2 persons, mobilization time for field personnel, and associated field expenses for sampling. Due to wet site conditions and difficult access to certain well clusters, costs for rental of a utility phase vehicle are included for 1 day of groundwater level measurements and 1 day of sampling per event (4 total days). It is anticipated that purge water (investigation -derived waste [IDW]) will be containerized in a 55 - gallon polyethylene drum and temporarily staged on Site for characterization prior to removal and disposal. Two drums are currently staged on site from monitoring well redevelopment activities in May 2025. Costs are included for transport and disposal of these drums in July 2025, following the Summer 2025 field event. Costs are also included for purchase, removal, and disposal of one 55 -gallon polyethylene drum for IDW generated during the Winter 2025 field event. Drum transport and disposal will be conducted by a licensed subcontractor. Costs include 4 hours of drum removal oversight for 1 person per event. Brush clearing by a contractor is necessary on an annual basis to clear overgrowth and maintain access to the well clusters. In 2025, Geosyntec will provide oversight for a contractor to clear shrubs, vines, and tall grass in an approximate 6 feet radius around select well clusters using a track loader with mower deck. Costs are included for one day oversight (with 1 person) and for subcontractor costs. Phase 5 — Data Evaluation and Annual Reporting: Under this phase, Geosyntec will perform data evaluation activities and reporting. The reporting includes preparation of the 2025 Annual GMR for submittal to FDEP. The 2025 Annual GMR will be consistent with the groundwater monitoring reports historically submitted to FDEP for this Site and the data evaluation activities will include database management, screening results against applicable regulatory criteria, GIS figure preparation, time -trend analyses, and/or statistical data analyses. The report will be supported by attachments containing Chain -of - Custody sheets, field notes and observations, water sampling logs, maps, graphs, analytical results, quantitative statistical evaluation, and other applicable materials. As part of the statistical analysis, trend analysis graphs showing temporal concentrations of constituents and a summary of the Mann - Kendall statistics will be included to identify increasing, decreasing, or no trends in groundwater constituent concentrations. The draft 2025 Annual GMR will be submitted to IRC SWDD for review prior to submittal to FDEP. The final report will be signed and sealed by a Florida -registered Professional Engineer or Geologist. FR0766\XR25016 engineers I scientists I innovators