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Phase 2 contemplates construction of a second outlet drainage channel through the Wellton-Mohawk area, reconstruction of the existing Gila River pilot channel, construction of 12 new wells in the South Gila Valley, certain flood control works, and other facilities. These works would provide better regulation of water deliveries to Mexico and further reduce peak salinity. Phase 3 of the recommendations involves total overall river regulation on the lower Colorado River and would consist of integrating ground-water pumping with river regulation that will be provided by the off-stream Senator Wash Regulatory Reservoir, just upstream from Imperial Dam, now approved for construction. The report concludes that if phase 1 construction is authorized, an expedited construction program could be sufficiently accomplished by October of this year to substantially reduce the peak salinity of Colorado River water delivered to Mexico during the winter of 1963-64. The studies on which the recommendations are based included field and laboratory studies of soils in the Mexicali Valley. These analyses indicate that under improved irrigation and drainage practices, the soils in the Mexicali Valley can be safely irrigated with the Colorado River waters that would be delivered to Mexico. x x x P. N. 26268-63 2Epson Perfection 4870 Photo, 400 dpi, 24 bit, 1,486,533 byte