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SU~I~lARY (Continued) tons from other ;l[oJect (',qnals. The total salt loading from project land. <.1110 co"lnals for the 1977 Fr2S plan would be 50,650 tons annua11y. The project modification of changi.ng the ali.gnment of the Towaoe Canal would eli"tnate the 7 ,500 tons of annual salt loaeling that would have occurred with the west ali.gnlTIent. The construction of the silli.nity clll1trol features would further reduce salt loading hy an additional 24,500 tons (rounded) annually at a cost effectiveness of $83 per ton of salt removed. The total effect of all project modifications, including the realigning of the Towaoe Canal, would be an annual reduction of approximately 32,000 tons. The net effect of the project, including project modifications, ~ould he an increase of 18,650 tons of salt per year, as shown in Summary Table 2. Summa ry Table 2 Effects of project modifications on salinity (Unit--tons of salt) _________n____'______ Sa 1 t'----- loading Revised as pre- sal t sented loading in 1977 for 1977 _______________J'.E.?_ n:s planY ---------------- Effects of proj ect modifica- tions on ~lan Salt loading proposed --~"-- Dolores Project area-- project land and canals +10,080 +43,150 0 +43,150 Towaoc Canal--west alignment 'l:./O + 7,500 -7,500 0 Salinity control features 110 3/0 4/-24,500 i/-24,50~ ___T..otal J?.r:'?i~<:.~f.e_'=.t___+lO,08~ +50,65Q.__--=-.3},000 __~J~~O II Since the 1977 FES, salt loading analyses have included seepage from project canals as well as the irrigation of project land. 'l:...1 The salinity effects of canal seepage were not estimated in the lqn FES. 3/ Salinity control was not a part of the 1977 FES plan. II This salt reduction does not include the on-farm program of the SCS for reducing salt loading. No action alternative The no action alternative with respect to the salinity control pro- gram is included to allow a comparison between the construction of salinity control features and the anticipated future without saliaity control. This alternative would consist of constructing the Dolores Project as described in the In7 FES and in the Finding of No Signifi- cant Impact for the addition of hydroelectric power at HcPhee Dam and at the Towaoc Canal. This no actlon alternative assumes no expenditure of salinity control funds by Reclamation. Under the no action alternattve, the SCS on-farm prograJn for removiClg 38,000 tons of salt annually would be impacted, but the reduction in tons of salt removed is unquantifiable. 5-9