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Show 2. Chemistry Current Situation ( CS) Alternative A Alternative B J Alternative C 2.1 Identify salinity management regime for GSL. Feasibility/ Effectiveness Now have separate and distinct areas of salinity more than what would exist under pre- diking conditions. Causeway modifications are feasible, impact on salinity is reasonably predictable. Engineering required. RR responsible for cleaning culverts. Responsibility for breach maintenance not decided. Causeway modifications are feasible, impact on salinity is reasonably predictable. Engineering required. Most expensive alternative. Responsibility for bearing cost not determined. Now have separate and distinct areas of salinity. Possible Impacts Ecosystems could change if favorable conditions for brine shrimp and other species are lost. Lowered efficiency for S arm salt producers and better for N arm producers. Difficult for swimmers to float like a cork. Brine shrimp population is stressed. Exchange of brines would be roughly equal to what existed when salinity' was less overall concern from ecological and economic perspective. S arm industry efficiency improves. N arm industry efficiency declines. Best for S arm industry efficiency. Decreased N arm industry efficiency. Ecosystem could change if favorable conditions for brine shrimp and other species is lost. Decrease S arm industry efficiency. Conflicts/ Coordination Disagreement over permeability of the RR causeway. GSLEP studies must continue in order to evaluate monitoring results. Possible slowing of railroad traffic across GSL during construction. Disagreement over beneficial or detrimental effect of relatively fresher Bear River Bay and Farmington Bay. Public trust/ Protection Net loss of salt to N arm perceived not to be good. Uncertainty regarding benefit of some difference between the north and S arms. Better level of protection for lake's ecology. Provides some place for the brine shrimp to thrive under most salinity scenarios. Better level of protection for lake's ecology. Same as CS. 182 |