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Preference with respect to environmental quality 1 1 I I I I I I I I I I I I I , I I I I I SUMMARY TABLE (cont'd) Lake Andes-Wagner Unit Excess of Benefits over Costs (annual) $ 178,000 1.01Y Benefit-Cost Ratio Economic Rate of Return 8.5% Total Nonreimbursable Costs (IDC, Preauthorization Costs, Archeology, and Fish and Wildlife) $ 17,746,000 Total Reimbursable Cost Irrigation Fish and Wildlife $173,539,000 92,000 Annual Payment Capacity per Irrigated Acre Total Project Payment Capacity (45,000 acres) Less Annual I~rigation O&M Available for Repayment Annually $ 133.40 6,003,000 1,075,000 4,928,000 Repaid by Irrtgators--32 years (100 petcent) Repaid by P-S MBP Power Revenues $173,539,000 o Net Annualized Regional Development (Rb) Benefits $ 16,522,000 Net Annualized RD Benefits Accruing to Yankton Siou~ Indians $ 2,012,000 Environmental Quality Account: The critical environmental factors which would be affected by the proj- ect are wetlands, grasslands, and woodlands. A mitigation plan to com- pensate for habitat losses includes providing water to improve two wildlife areas (Owens Bay and Red Lake), purchasing 2,180 acres for reseeding to native grasses and 175 acres for planting to trees, purchasing 330 acres of wetlands, rep~acing 4 acres of wetland ease- ments, and seeding project right-of-way to nat ive grasses. With the mitigation plan, the project will result in net losses of 650 acres of wetlands, 2,110 acres of grasslands, and 45 acres of woodlands. However, because the replacement lands and measures will result in greater habitat value per acre, the habitat value in the project area will remain nearly the same, as Shown in the following tabulation: Environmental Factors: (Values in Habitat Units) Wetlands Grasslands Woodlands Future Conditions Withou,t Project 9,,060 70,560 9,970 Future With Recommended Plan 9,020 70,560 9,970 Y Based on alternative evaluation procedures. S-via