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<br />... <br />o <br /> <br />~timal le'iel ~ <br />Costs from Ieve14 <br /> <br />t Optimal investment - in <br />_ ,ve 2ot'e1l813 <br /> <br />74 -........- <br />_.....---- - - ~--.....~ <br />_.....- . I Optimal investment in ~............._ <br />......._- ..' oIternatWt I 01 .t,vel3 -/ <br /> <br />,/ <br />/ <br />/"""TEft..,,.. " <br />lEVEL 3 eosr- <br />EFFEClIVENESS <br />fljNGTlON <br /> <br />'l!;. <br /> <br />-- <br /> <br />S!!! <br /> <br />LEVEL 4 SALINITY COOTROL <br />COST.-EFFECl1VENESS FUNc1l00 <br /> <br />/ <br /> <br />-. Cost of ochleYiAI1 desired <br />SOllnil~ contt.olot <br />lellei-"4 <br /> <br />.~------------ <br /> <br /> <br /> <br />CUd <br /> <br />ALT~IlAA. ,ytvE.'nuv.:. L~ .. ..'- <br />CO$J-EFfCTWENESS <br />FUNCYIOH - <br />. .' <br /> <br /> <br />fill <br /> <br />- j/ <br />ALTERNATIVE .1, LE~ l! <br />COST-EFfEcrNEHES$- <br />FJJHCT.ClN/ . "......, I <br />" r I;OS'S <br /> <br />f!!! <br /> <br />') <br />AlTERNATIVE 2 LEVELZ <br />COST-EFFECTIVENESS <br />FUNCllOO <br />/ <br /> <br /> <br /> <br />( <br />Optimal- ~ 2 <br />eost,lrom-Jltv,t.3 - <br /> <br />Effectiveness <br /> <br />Effectiveness <br /> <br />Ifediven," <br /> <br />-......... <br />:> <br />/" <br />ALTERNATIVE .. lEVEL <br />msf-EffECfWEHES$ <br />~lON- <br /> <br /> <br />Desired salinity control <br />ot I,vet 4 <br /> <br /> <br />~ <br /> <br />Cost <br /> <br />~ <br /> <br />.. <br /> <br />, <br /> <br />1.1zt <br /> <br /> <br />/ <br />............/leveII ccma <br />7/ /" <br />~"""'l-_""/ <br />-- <br />-- <br /> <br />Effec'wene$s <br /> <br />Figure 15. <br /> <br />Schema~i2 diagram of ~heroultilevel optiroiza~ion analysis~'alker, 1978). <br /> <br />'- <br /> <br />I <br />. I <br />/~II <br />,// w$tS <br />: 1.-/'/ _..... <br />_J--:.---- <br />~- <br /> <br />Eff~tiveness <br /> <br />. <br /> <br />,- <br />