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DAM NAME: San Luis Tailing;Dam DATE OF REPORT: 06 20 18 <br /> TAILING DAM INSPECTION FORM <br /> ITEMS REQUIRING ACTION BY OWNER TO IMPROVE THE SAFETY OF THE DAM <br /> MAINTENANCE • MINOR REPAIR • MONITORING <br /> ❑(1)PROVIDE ADDITIONAL EROSION PROTECTION: <br /> ❑(2)CLEAR BRUSH FROM: <br /> ❑(3)INITIATE RODENT CONTROL PROGRAM AND PROPERLY BACKFILL EXISTING HOLES: <br /> ❑(4)GRADE CREST TO A UNIFORM ELEVATION WITH DRAINAGE TO THE UPSTREAM SLOPE: <br /> ❑(5)PROVIDE SURFACE DRAINAGE FOR: <br /> ❑(6)MONITOR: <br /> ❑(7)OTHER: <br /> 0(8)OTHER:Completion of South Diversion Ditch Improvements(underway)will improve flood protection_ <br /> ❑(9)OTHER: <br /> ENGINEERING 0 EMPLOY AN ENGINEER EXPERIENCED IN DESIGN AND CONSTRUCTION OF DAMS TO: <br /> (Plans and specifications to be approved by CDRMS prior to construction.) <br /> ❑(10)PREPARE PLANS AND SPECIFICATIONS FOR REHABILITATION OF THE DAM <br /> ❑(11)PREPARE AS-BUILT DRAWINGS OF: <br /> ❑(12)PERFORM A GEOTECHNICAL INVESTIGATION TO EVALUATE THE STABILITY OF THE DAM: <br /> ❑(13)PERFORM A HYDROLOGIC STUDY TO DETERMINE REQUIRED S1ZE OF FLOOD BYPASS/SPILLWAY: <br /> ❑(14)PREPARE PLANS AND SPECIFICATIONS FOR AN ADEQUATE SPILLWAY <br /> ❑(15)SET UP OR IMPROVE MONITORING SYSTEM: <br /> ❑(16)OTHER: <br /> ❑(17)OTHER: <br /> Attachments: <br /> 1)Photo Log and map(Figure 1) <br /> 2)Recent piezometer and under-drainage flow rate readings <br /> Z Photographs B Attachments <br /> ENGINEER'S INSTRUCTION: Instructed owner on the safety concerns with the structure and how to monitor and inspect the dam and <br /> appurtenant works in the interim period between the regulatory annual inspections. 0 Yes ❑ No <br /> Comment: <br /> Professional Engineer's Signature: z6r Date: 7/9/18 <br /> Reviewed by: Date: <br /> Owner/Owner's Representative <br /> Page 3 of 4 <br />