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SUMMARY (Continued) Reclamation has used criteria of cost effectiveness and maximizing salinity reduction to select the recommended salinity reduction measures. Under the criterion of cost effectiveness, those plans resulting in the greatest reduction of salinity in the Colorado River system for the least cost would be recommended for implementation first. The cost- effectiveness criterion is based on total annual costs and the resulting average salinity reduction at Imperial Dam, expressed in dollars per ton of salt removed. Project modifications The project modification of irrigation system improvements would consist of lining three segments of the Lone Pine Lateral totaling 8.8 miles and one segment of the Upper Hermana Lateral totaling 0.5 mile, abandoning the Lower Hermana Lateral and the Highline and Rocky Ford Ditches and combining their flows with the new alignment of the Towaoc Canal totaling 25 miles, and installing eight buried pipe laterals totaling 7.0 miles to convey water from the Towaoc Canal to serve the Rocky Ford Ditch service area. Measures would be employed to reduce deer and elk entrapment within the two concrete-lined sections of the Towaoc Canal. Approximately 689 acres of land were acquired downstream of McPhee Dam for mitigation and enhancement. Approximately 2i5 acres of this land were acquired as mitigation for riparian and wetland habitat losses resulting from the project. The re"18ining 474 acres were acquired for fish and wildlife and recreation enhancement. Of the 215 acres required for mitigation, the u.S. Fish and Wildlife Service recommended that 24 acres be developed as wetland habitat to compensate for wetland habitat losses expected to result from lateral and ditch lining. Reclamation, however, through coordination with the Environmental Protection Agency, the Fish and Wildlife Service, and the Colorado Division of Wildlife, developed a 75-acre plan to offset these losses. Under the cultural resources mitigation plan, Reclamation would propose to excavate some sites, avoid some sites, propose that many sites are already adequately mitigated by the Class III survey recording, and accept the necessary loss of some sites without any further work beyond the Class III survey recording. Reclamation has established a 10-year program to monitor the effects of salinity control on water quality in the Colorado River. Rig~ts-of-Way Rights-of-way for the Lone Pine and Upper Hermana Laterals, cur- rently 50 feet in width, would be widened to 200 feet. The ~WIC would be responsible for acquiring the rights-of-way for these two canal sec- tions and the Rocky Ford Pipe Laterals. Reclamation would acquire a S-7