WSP01625 - Laserfiche WebLink

Home Browse Search

Federal investment costs Interest during const. Total investment Annual equivalent cost (50 years - 7-3/8%) Annual operating costs Total annual costs Salinity reduction at Imperi a 1 (annual equiv. ) Annual cost per mg/L of salinity reduction at Imperial Dam Initial salt reduction (tons) y Onf arm + IMS (60% irrig, efficiency) $4,000,000 529,000 $4,529,000 $ 344,000 105,000 $ 449,000 6.3 $ 71,000 70,900 Latera I lining $17 ,000,000 2,249,000 $19,249,000 $ 1,461,000 1/ $ 1,461,000 1.6 $ 913,000 17,700 Latferal lining + anf ann + 1M'; (60% irrig, eff,) $21,000,000 2,778,000 $23,778,000 $ 1,805,000 105,000 $ 1,910,000 7.9 $ 242,000 88,600 1/ Anticipated reductions in maintenance costs will be developed as a part of future studies. 2/ Estimated first year reduction. The amount would decrease gradually from year to year. The Colorado River Basin Salinity Control Act provided that 75 percent of the total costs of construction for the four authorized salinity control units would be nonreimbursable. The remaining 25 percent would be, reimburs- able and would be allocated between the Lower Colorado Basin Development Fund and the Upper Colorado River Basin Fund, with no more than 15 percent of the reimbursable costs allocated to the Upper Basin Fund. The reimburs- able development costs would be repaid without interest within a 50-year periOd after the development becomes operational. While present studies have been predicated on a similar repayment plan for the PVrD unit, final repayment criteria would be determined as a part of legislation authorizing the unit. Environmental Considerations Any plan would include measures for wildlife mitigation and enhancement. Further studies to assess potential impacts to fish and wildlife resources would then enable identification of appropriate incidental habitat replace- ment to offset project associated losses. 14 O"f)(j) '0 ""'-Ii