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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />27 <br /> <br />discussed criteria. At all street crossings existing <br />utilities must be either adequately protected or relocated. <br /> <br />4. Drop Structures. As discussed under "1. Open Channels"; <br /> <br /> <br />drop structures are located in order to reduce overall <br /> <br /> <br />velocities during 100-year floods. <br /> <br />5. Erosion Control Structures. Controlling erosion of the <br /> <br /> <br />existing low flow channel, as recommended during the first <br /> <br /> <br />construction phase, is achieved by means of grouted rip <br /> <br /> <br />rap placed as shown on the following sketch. <br />