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Mr. Himanshu H. Mehta, P.E. 25 September 2020 Page 9 will re -install staff gauges at the surface water sampling locations LC-SW5 and LC-SW6. Peavy & Associates Survey & Mapping, PA (Peavy) will conduct a top -of -casing survey at the three (3) new evaluation monitoring wells and survey the two (2) re -installed staff gauges. Geosyntec will subcontract the field sampling activities to Ideal Technical Services (ITS). ITS is currently performing the sampling for the semi-annual compliance and quarterly assessment monitoring events at the IRCL facility. Where noted, the agronomic analytical analysis will be completed by ServiTech of Dodge City, Kansas. The other analytical testing will be conducted by ENCO Laboratories (ENCO) of Orlando, Florida, the analytical laboratory contracted with, and direct bill to, SWDD. A work plan detailing the scope of work detailed in this task will be provided to FDEP for approval at least 45 days prior to anticipated, start date of the scope of work detailed in this Task. The results of the initial temporary piezometer water -quality monitoring event will be integrated into the October 2020 quarterly assessment report for the C&D debris disposal facility and will be reported to FDEP within 60 days of receipt of analysis from the laboratory. The technical memorandum will be submitted to FDEP within 90 days of receipt of analytical data. Geosyntec assumes the areas where the groundwater screening and temporary piezometers need to be installed will be cleared by SWDD and SWDD will provide assurance that the drilling areas are clear of subsurface utilities; otherwise, a subsurface utility survey will be performed prior to initiating work. Phase 4 —Class I Landfill Evaluation Monitoring The installation and sampling of four (4) evaluation monitoring wells is required per correspondence with FDEP dated 17 September 2020 as noted above. The evaluation monitoring wells must be installed at the edge of the zone of discharge (ZOD) which is located 100 ft from the edge of waste and downgradient of existing detection monitoring wells: MW -3S, MW -14S, MW -44S and MW -44I. The evaluation monitoring wells will be installed with identical construction to the detection monitoring wells where the evaluation monitoring is to occur. The evaluation monitoring wells will be installed using HSA methods and constructed of 2 -in. diameter SCH 40 PVC well materials including a 10 -slot (0.001 -in.) screen including a 20/30 graded silica sand filter pack, 30/65 graded silica sand seal and cement grout slurry to surface. Each evaluation monitoring well will be completed with an above ground protective casing and three steel bollards and will be developed for a period of one hour either prior to grouting or at least 24 hours after grouting. NCP2020 3158/JL200925 2020 Compliance Monitoring Proposal