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<br />Economic Analysis <br /> <br />The current economic analysis of the Narrows Unit based on January 1977 <br />price levels indicates the following direct benefit-cost ratios: <br /> <br />At the authorized discount rate (3-1/4 percent) <br />At the current rate for new authorizations <br />(6-5/8 percent) <br /> <br />2.06:1 <br />1.02:1 <br /> <br /> <br /> <br />,A <br /> <br />. . <br /> <br /> <br />4 <br /> <br />