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Mr. Himanshu H. Mehta, P.E. Geosyntecl5 2 June 2022 consultants Page 2 In consideration of the ongoing natural attenuation processes occurring at the site, the enhancement of these biological processes via the injection of an electron donor was proposed and agreed to in concept by the FDEP in correspondence dated 2 August 2006. In response to FDEP's request and supported by groundwater monitoring results, Geosyntec conducted an injection event in 2017 [Remedial Action Plan Modification Addendum No. 3 (RAPM 3)] to remediate recalcitrant CVOC groundwater impacts in the former source area. Semi-annual performance monitoring associated with bioremediation implementation was conducted from 2017 to 2020. In April 2021, FDEP approved to discontinue performance monitoring associated with RAPM 3 and to discontinue CVOC sample collection at five monitoring well locations where CVOCs had not been detected for at least three consecutive sampling events. Semi-annual groundwater monitoring for CVOCs at 42 monitoring well locations will be conducted in 2022, as well as semi-annual reporting. PROPOSED SCOPE OF WORK The proposed scope of work consists of semi-annual groundwater monitoring and reporting and related activities to be performed on behalf of IRC SWDD at the Former South Gifford Road Landfill. For the purpose of budgeting, the scope of work has been divided into the following phases: • Phase 1 — Project Management; • Phase 2 — Meetings/Regulatory Interaction; • Phase 3 — Annual Pollution Remediation Liabilities Evaluation; • Phase 4 — Semi -Annual Sampling Activities; and • Phase 5 — Data Evaluation and Semi -Annual Reporting. The remainder of this section presents a general description of the activities to be performed in each phase. Phase 1 — Proiect Management: Under this phase, Geosyntec will perform project planning and management responsibilities, such as correspondence with IRC SWDD and FDEP, invoice review, project coordination, and project administration. The budget includes five hours per sampling/reporting event and one hour per month for the project manager (22 hours total), one hour for the senior principal - in -charge, and one hour per month (12 hours total) for the administrative assistant. Phase 2 — Meetings/Re2ulatory Interaction: Under this phase, Geosyntec will prepare for and attend up to one meeting, with IRC SWDD, FDEP, and/or IRC Board of County Commission, as necessary. It has been assumed that this meeting will be in person. Also, under this phase, four hours has been included for the senior principal -in -charge to provide ongoing support to IRC SWDD related to interaction and negotiation with FDEP. FR0766\XR22024.docx engineers I scientists I innovators