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POND 016 SPILLWAY CERTIFICATION <br />This report provides updated SEDCAD demonstrations and current elevations for the embankment, <br />prindpal spillway and emergenry spillway Eor Pond 016. The purpose of my inspection and <br />certification is to ensure correM and accurate spillway elevations based on the accompanying certified <br />SEDCAD demonstrations. <br />The capacity of Sedimentation Pond is attributed partially to the embankment and partially to the <br />pond excavation. The embankment construction techniques and resulting stability analyses were <br />previously certified and have not changed. During passage of the 10-year, 24hour stomt event no <br />flow is discharged through the emergency spillway as shown on Exhibit 13-9C and in the SEDCAD <br />demonstrations. The structure elevations shown on $xhibit 13-9C have been verified by physical <br />surveying. <br />Pond 016 functions in conjunction with Pond 016A and this system meets of exceeds the design and <br />performance requirements of the DMG regulations. SCC inspects the pond quarterly to evaluate <br />structural integrity, storage capatty conditions, and remedial work requiremenu in accordance with <br />the approved permit conditions. <br />• <br />• <br />TR-53 Revised G/OS <br />To the best of my knowledge, the field adjustments made to abate CV-2005-003 are in conformance <br />with the updated designs and spedfications. ~ <br />