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Mr. Himanshu H. Mehta, P.E. <br />12 April 2019 <br />Page 3 <br />Geosyntec <br />consultants <br />be by conference call. Also, under this task, six hours has been included for the principal -in -charge <br />to provide ongoing support to IRC SWDD related to interaction and negotiation with FDEP. <br />Task 3 — Annual Pollution Remediation Liabilities Evaluation: As requested by IRC SWDD, <br />under this task, Geosyntec will prepare the annual environmental liability evaluation. This <br />document is prepared annually in response to Governmental Accounting Standards Board <br />Statement No. 49 (GASB No. 49), Accounting and Financial Reporting for Pollution Remediation <br />Obligations, which requires the inclusion and calculation of pollution remediation obligations. The <br />objective of GASB No. 49 is to enhance the usefulness and comparability of pollution remediation <br />obligation information reported by state and local governments. It has been assumed that the report <br />will include evaluation of two sites, including South Gifford Road Closed Landfill (4701 41' <br />Street) and Old Administration Building (1840 25th Street). In addition, two hours have been <br />included for a Florida registered professional engineer to conduct an independent review of the <br />liability evaluation. <br />Task 4 — Semi -Annual Sampling Activities: Under this task, Geosyntec will perform 2019 field <br />activities related to the performance monitoring and plume groundwater monitoring. The semi- <br />annual activities will include field preparation, groundwater sampling, and water level <br />measurements. Field preparation activities will include scheduling and staffing, subcontracting, <br />coordination with the analytical laboratory, field equipment preparation, procurement of Passive <br />Diffusion Bag (PDB) samplers, and notifying FDEP and Vero Beach Municipal Airport of the <br />field schedule. Performance monitoring well GR-MW3OB and GR-MW37B associated with the <br />RAPM3 implementation is included in the semi-annual sampling plan for analysis of <br />bioremediation performance parameters, including dissolved gasses, total organic carbon, and <br />dechlorinating microbial concentration. <br />Geosyntec will perform the groundwater sampling activities associated with the CVOC plume <br />monitoring well network. Sampling activities will be completed with a combination of PDB <br />samplers and traditional low -flow sampling techniques. PDBs are anticipated to be purchased from <br />EON Products, one of the few suppliers of this type of passive sampling device. One PDB harness <br />(used for deployment) will be purchased from EON Products for monitoring well GR-MWO2B. <br />Groundwater sampling activities will be executed using a two -person sampling crew and will be <br />performed in general accordance with the FDEP Standard Operating Procedures (SOPs). The <br />proposed summer 2019 field event (tentatively scheduled for June) will include sampling of ten <br />monitoring wells (seven wells using PDBs and three wells with traditional sampling techniques). <br />The summer 201,9 field event is budgeted to include one day for groundwater sampling activities <br />and one day for PDB deployment for the next sampling event (total of two field days each with <br />two persons). The proposed winter 2019 field event (tentatively scheduled for December) will <br />include sampling of 47 monitoring wells (38 wells using PDBs and nine wells with traditional <br />sampling techniques). The winter 2019 field event is budgeted to include a total of three and one- <br />half days (with two persons) for groundwater sampling activities and PDB deployment for the <br />FR0766\XR 19012 <br />engineers 1 scientists 1 innovators <br />