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<br /> Comprehensive Review of <br /> S olid W aste Collection and Disposal Options <br /> <br /> <br />v2.1 4 10/22/12 <br />haul to a new or existing landfill), and schedule when certain program modifications are <br />implemented. The model addresses major capital and an operational cost to operate the Town’s <br />solid waste system under various assumptions and configurations as described in more detail <br />below. <br />The model is fairly complex. For each scenario, consistent assumptions are made regarding <br />annual solid waste quantities, population projections, escalation rates for waste growth and costs, <br />administration costs, transportation costs, and landfill, waste-to-energy, and conversion <br />technology processing and disposal costs. The output from the model is an estimate of the net <br />present value (NPV) of each alternative strategy or scenario. NPV costs are calculated for each <br />alternative scenario for the 30-year planning period to allow for comparison of the scenarios <br />from a cost perspective. NPV is the current value of one or more future cash payments and <br />offsetting revenues discounted at an assumed interest rate. A NPV analysis is a useful tool in <br />evaluating alternatives involving complex cash flows. For this analysis, a lower NPV represents <br />a more favorable scenario from an overall cost perspective only. <br />The program scenarios evaluated using the pro forma model are presented below in Exhibit 1-1. <br />Exhibit 1 -1. Pro Form a Model Program Scenarios <br />Designator Description <br />A Status Quo, No New Programs, No Automation of Residential <br />Collections, Town Keeps Commercial Collections <br />B No New Programs, Town Eliminates Commercial-Business Collections, <br />Town Keeps Multi-Family Collections <br />C No New Programs, Town Eliminates All Commercial Collections <br />D Automate Residential Collections, Town Keeps Commercial <br />Collections <br />E Automate Residential Collections, Implement PAYT Program, Town <br />Keeps Commercial Collections <br />F Automate Residential Collections, No PAYT, Town Implement <br />Organics Diversion Program, Town Keeps Commercial Collections <br />G Automate Residential Collections, Implement PAYT, Town Implement <br />Organics Diversion Program, Town Keeps Commercial Collections <br />H Develop New Regional Landfill, Automate Residential Collections, <br />Town Keeps Commercial Collections, No PAYT, No Organics <br />Diversion <br />I New Regional Landfill, Automate Residential Collections, Town <br />Keeps Commercial Collections, PAYT, Organics Diversion