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<br />. <br /> <br />. <br /> <br />. <br /> <br />COST ALLOCATIOr;S <br /> <br />100-year per~od was estinated by ~rojection of the excess benefits antic- <br />ipated for the 11 initial participatir.g projects. The projections l1ere <br />made on the basis of the average value of excess benefits per ac"e-foot <br />of stream dzp1etion. In order to arrive at a conservative estimate, how- <br />eVer, the excess benefit value determined for the initial participating <br />projects was slightly lowered 'lheCt related to other future projects. Also <br />the cocputations were based on th~ weighted average increase in stream <br />depletions of 1,800,000 acre-feet over the 100-year period rather than the <br />projected total increase of 2,9~0,COO acre-feet by the end of the period. <br />Derivation of the excess benefits is summarized in Ule following table. <br /> <br />Excess annual benefits of initial participating projef~s <br />and projection for future water-consu;n:i,ng projects Y <br />(Unit--l,OOO) <br /> <br />Participllting <br />projects <br />Paonia <br />Pine Ri vel' <br />extension <br />Smith Fork <br />Florida <br />Silt <br />Hammond <br />Central Utah <br />Emery County <br />Seedskadee <br />Lyr.1an <br />La Barge <br />Subtotal <br />Total projected <br />average includ- <br />ing future proj- <br />ects for 100-year <br />period <br />y Includes onl:' those benefi ts <br />municipal, and industrial water. <br /> <br /> Inc~eaced Average <br /> enemal excess <br /> stream benefits <br /> An'lual deple- 'per acre- <br /> benefi ts tj,cn foot of <br />Annt'al Anni.lal in excess ( ecre- stream <br />beneri ts costs of costs feet) d,epletion <br />$640 $236 $404 10 $~ <br />509 178 331 28 12 <br />150 110 40 8 5 <br />341 221 120 13 9 <br />198 111 87 6 15 <br />202 84 118 9 13 <br />5,562 5,317 245 189 1 <br />426 298 128 16 8 <br />1,567 893 674 110 6 <br />388 384 4 0 0 <br />206 69 137 14 10 <br />10,189 7,901 2,288 403 6 <br /> <br />9,000 <br />associated with <br /> <br />1,800 <br />irrigation, <br /> <br />5 <br /> <br />As sho,m in the table, the estimate of total excess benefits for the <br />100-year period of ~'1alysis amounts to an average of $9,000,000 annual:y. <br />The present '~rth of this annual amount over a 100-year period at 2 1/2 <br />percent interest is about $330,000,000. <br /> <br />38 <br />