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Sediment traps have been located below Culverts 2, 3, 4, 9, and 10, and at <br />• Runouts 1, lA, 2, 4, and 5. The culverts' and runouts' flow calculations are <br />outlined on Tables 2.05.3-8. Culvert and runout discharge flow-velocities <br />calculations are presented in Appendix 2.05.3-5. Appendix 2.05.3-5 summarizes <br />representative 100-year, 24-hour, "worst-case" flow velocities for Culverts 3, <br />4, and 9 and indicate corrugated metal pipe (CMP) outfall velocities are 5.47, <br />3.41, and 14.7 fps, respectively. Based on these calculations, runout energy <br />dissipators were installed on all outlets. <br />Surface water flow energy is dissipated using a combination of riprap and <br />sediment traps (Map 8). Riprap sizing is based on data presented by McLaughlin <br />Engineers (1969) in the section entitled "Hydraulic Structure." The size of <br />riprap and size of the sediment traps is presented on Table 2.05.3-8 and in <br />Appendix 2.05.3-5. <br />• <br />• <br />- 187 - (Rev. 5/86) <br />