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Task 3: Landfill Depletion Model <br />Preparation of the FA and FCA (Tasks 1 and 2) typically rely on total permitted capacity of each <br />cell or segment of the landfill to determine the anticipated closure date for financial planning; <br />however, in reality, the full capacity of a cell cannot be reached until the subsequent cell is <br />constructed to a certain elevation to reach the last of the usable air space in the prior cell. <br />Constructability limits the ability to discretely close one cell before moving to the next cell. The <br />CONSULTANT will utilize a depletion model for Class 1 waste developed in a previous work <br />authorization to more accurately determine when the next cell must be online in order to <br />maximize the capacity in the active cell. The results of the volumetric survey obtained under this <br />scope of services will be incorporated into an update to the depletion model, and summarized as <br />an appendix to the Financial Assurance or standalone technical memorandum. <br />Waste generation will be projected using historical data and adjusted utilizing BEBR population <br />projections to incrementally increase the volume of waste anticipated in future years. Population <br />projection growth will be used with straight line interpolation between data points (BEBR <br />publishes 5 -year increments). A Civil 3D surface will be generated, representative of the current <br />volumetric survey, and incorporated into the existing depletion model to reflect current <br />conditions. The updated results will be summarized in a technical memorandum to be <br />incorporated as an appendix to the Financial Assurance report or standalone technical <br />memorandum. <br />Deliverables <br />Task 1 Draft Tables, draft and final reports <br />Task 2 Draft and final reports <br />Subtask 2.1 Assurance Form and Escrow Balance and Budget recommendations <br />Subtask 2.2 Survey (as described in MM&T's proposal), remaining airspace and evaluation of <br />compaction <br />Task 3 Summary memorandum <br />Assumptions <br />Information to be provided by the COUNTY includes: <br />• Site access <br />• Escrow account balances <br />• The rates and number of dwelling units for each of the transporters <br />• Available site surveys <br />• Level of service for each transporter <br />• Monthly fee for both single family residence and multi -family residences <br />collected via non -ad valorem assessment <br />• Number of parcels, equivalent residential units, and waste generation units <br />(WGU) for Fiscal Year 2021-2022 for each customer <br />• Wastestream monthly totals <br />• Changes to Basis of Allocation <br />Page 3 of 6 <br />