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Mr. Himanshu H. Mehta, P.E. 20 December 2024 Page 4 requested by the FDEP in the 8 May 2020 letter) to four (4) locations (specifically downgradient of MW -3S, MW -14S, MW -44S and MW -44I). The FDEP approved this request in a letter dated 14 August 2020 and the 90 -day evaluation monitoring period was initiated on 17 September 2020 through a second RTC letter provided to the FDEP. Geosyntec installed the three (3) groundwater evaluation monitoring wells in November 2020 (evaluation monitoring well not installed downgradient of MW -14S since MW -14S was already located at the edge of the Class I landfill zone of discharge), sampled the four (4) quarterly wells and collected field parameters from two staff gauges (C5 -SWI and C5-SW3) for Total Ammonia Nitrogen (TAN) calculation in November 2020. During the 2021 quarterly sampling, Geosyntec working on behalf of the SWDD reduced the quarterly parameters analyzed and negotiated the use of a site-specific ammonia GCTL based on TAN calculations thus adding a surface water screening location north of MW -53S. In 2024, Geosyntec further reduced the sampling scope for the remaining evaluation monitoring wells at the Class I landfill. Therefore, sampling of the four Class I landfill groundwater evaluation monitoring wells and four surface water field parameter screening locations will be included in the 2025 quarterly monitoring and reporting program. Storne Tank Groundwater Monitoring Wells Sampling and Reporting Permit Modification No. 0128769 -033 -SO -MM and Approval of Request for Alternate Procedure — SWAP 22-1 (i.e., Order), effective 22 July 2022, authorized the SWDD to use an existing 500,000 -gallon tank as a leachate storage tank for the leachate evaporator system for the Class I Landfill. Conditions of this approval required the SWDD to install four new groundwater monitoring wells (MW -49 to MW -52) around the periphery of the leachate storage tank, which were installed in February 2023. Upon well installations, the SWDD was also required to conduct an initial and three additional sampling events (on a weekly basis) and conduct two quarterly. sainpiing events after the initial filling of the tank with leachate. Based on the timeline of when the tank was initially filled with leachate on 30 August 2023, the well installations, initial sampling event, and three weekly sampling events were documented to the FDEP in 2023. In 2024, Geosyntec completed four quarters of sampling from these wells and submitted the two Semiannual Reports. Based on review of the July 2022 Order, in 2025, the quarterly sampling is required to continue and an Annual Report will be submitted to FDEP on behalf of SWDDD. Preparation of July 2023 to December 2025 Technical Report The Water Quality Monitoring Plan (WQMP) for each of the IRCL facilities permits (which is listed as Appendix 3 of each permit) requires the preparation and submittal of a Technical Report to FDEP every two and one-half years during the active life of the facility, and every five years NCP2323548/JL23073 2025 Compliance Monitoring Proposal cnginccrs I scicnti;ts I innovators