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<br />001283 <br /> <br />26 <br /> <br />The second element of general benefit is the non-quantifiable <br />aspects of urban drainage and flood control facilities. These are <br />important in dividing project costs when the benefit to cost ratio <br />(BCR) of a viable project is less than 1. <br />'Step 4 -- Compute special and general fractions of project cost. <br />1. BCR is greater than 1. When the BCR is greater than 1, <br /> <br />the sum of the special benefit and the general benefit will be greater <br />than or equal to the total project cost (CT). That is: <br /> <br />BS + BG = BT ~ CT (3) <br /> <br />where BT = sum of the special and general benefits. Therefore: <br /> <br />BS/BT = FS = special fraction of project cost, and <br />BG/BT = FG = general fraction of project cost. <br /> <br />Thus, the cost allocated to developers (Cs) is: <br /> <br />Cs = (Fs)CT <br /> <br />(4) <br /> <br />and the cost allocated to the general fund (CG) is: <br /> <br />CG = (FG)CT <br /> <br />(5) <br /> <br />2. BCR is less than 1. In this case, the project is viable <br />only with the addition of the non-quantifiable element of the general <br /> <br />benefits. This element is assigned a minimal economic value to <br /> <br />equitably divide the project costs. To calculate the special and <br />general portions in this case, the BCR is expressed in the following <br />form: <br /> <br />B IC = 1 - R <br />T T <br /> <br />(6) <br /> <br />where R = the non-quantifiable fraction of project benefit to economi- <br />cally justify the project, and BT' CT are as defined above. <br />