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Mr. Himanshu H. Mehta, P.E. 25 September 2020 Page 2 19 acres is comprised of Cell 1 C&D debris disposal facility, and 2.5 acres consists of a C&D debris recycling facility. The Class I landfill currently accepts both Class I waste and C&D; debris for disposal under the Florida Department of Environmental Protection (FDEP) Construct and Operate Permit Modification Nos. 0128769 -026 -SC -IM and 0128769 -027 -SO -MM, dated April 2, 2018 (Class I Permit). The C&D debris disposal facility operates under FDEP Permit No. 0128769 -025 -SO - 24, dated July 13, 2017 (C&D Permit). The Water Quality Monitoring Plan (WQMP) for each of the IRCL facilities permits (which is listed as Appendix 3 of each permit) indicates that groundwater and surface water quality monitoring are required. Semi-annual sampling of the Class I landfill and C&D debris disposal facility groundwater monitoring wells shall be conducted in January and July 2020. The samples collected from the Class I landfill and C&D debris disposal facility monitoring wells shall be analyzed .for the routine monitoring parameters listed in Section II.3 (Class I Permit) and Paragraph 8 (C&D Permit) of the WQMP, respectively, as required by paragraphs 62- 701.510(5)(c) & (7)(a) and 62-701.730(8)(d), Florida Administrative Code (F.A.C.). Samples from one surface water monitoring site (SW -2) shall be collected semi-annually in January and July, if water is discharging from the stormwater pond. The samples, if collected, shall be analyzed for the list of parameters listed in Section I11.2 of the Class I Landfill WQMP, as required by paragraphs 62-701.510 (5)(d) and (7)(b), F.A.C. Semi -Annual Water Quality Compliance Monitoring for the Class I Landfill A comment letter from FDEP dated 6 May 2020 provided comments regarding the results of the January 2020 Semi -Annual Water Quality Monitoring Report for the Class I landfill. The FDEP provided .notification to SWDD to initiate evaluation monitoring at all monitoring wells with detected exceedances above applicable groundwater cleanup target levels (GCTLs) for pH, ammonia, chloride, sodium, TDS and arsenic. Geosyntec provided a response to comments (RTC) letter the FDEP comment letter on 28 May 2020 which focused on the long-term trends with the dataset available from the FDEP Water Assurance Compliance System (WACS) database and requested a reduction of evaluation monitoring locations from 25 locations (as originally requested by the FDEP in the 8 May 2020 letter) to 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 FDEP. NCP2020 3158/JL200925 2020 Compliance Monitoring Proposal