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Mr. Himanshu H. Mehta, P.E. 3 August 2021 Page 4 • Phase 4 — Data Evaluation and Summary Report. The remainder of this section presents a general description of the activities to be performed in each phase. Phase 1— General Consulting/Meeting Support/Proiect Management Under this phase, Geosyntec will perform project planning and management responsibilities, such as correspondence with SWDD and FDEP, invoice review, project coordination, prepare a site-specific Health and Safety Plan, preparation of a work plan for FDEP approval for the tasks outlined in this proposal and project administration. The work plan for the tasks outlined in this proposal will be incorporated into the Draft Supplemental Report prior to submittal to the FDEP for approval. Geosyntec has also included budget for preparation and attendance (by three Geosyntec personnel) at one meeting with SWDD and/or FDEP, as needed. Phase 2 — Historical and As -Built Documents Review The dimensions of the groundwater impact on the downgradient edge of the RDF and the C&D debris disposal facility have been largely defined by the completed previous scope of work presented in the Draft Supplemental Report. However, the source of the groundwater impacts has not been fully assessed relative to potential RDF contribution. There is a potential that the source of the groundwater impacts is the stormwater management system to the south of the RDF. In order to resolve the source of the observed groundwater impacts, additional assessment activities are proposed as summarized below under Phases 2 and 3 and on the attached Figure 1. Phase 2, Task 1— Background Document Evaluation Operation and compliance records relating to the RDF will be reviewed to identify if any releases have been reported. In addition, with permission from SWDD or IRC Utilities Department (IRCUD), Geosyntec will interview select workers at the RDF to gain better understanding of daily operations including cleaning and flushing of incoming trucks. Phase 2, Task 2 — Stormwater Infrastructure Record Review As -built drawings for the RDF and C&D debris disposal facility stormwater management system will be reviewed to identify potential cross connections between the two in addition to verifying the overall drainage pattern (i.e., surface water flow direction) around the C&D debris disposal facility and RDF. A Site visit is included during this phase to inspect the stormwater NCP2020-3158/JL21057 GW Compliance Technical Support Services.doc