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DAM NAME: San Luis Tailing Dam <br />DATE OF REPORT: 05/15/14 <br />OVERALL CONDITIONS <br />Based on this inspection and recent file review, the overall surficial condition is determined to be: <br />❑ SATISFACTORY 0 CONDITIONALLY SATISFACTORY ❑ UNSATISFACTORY <br />TAILING DAM INSPECTION FORM <br />ITEMS REQUIRING ACTION BY OWNER TO IMPROVE THE SAFETY OF THE DAM <br />MAINTENANCE • MINOR REPAIR 0 MONITORING <br />0 (1) PROVIDE ADDITIONAL EROSION PROTECTION: _On right groin repair area <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 />0 (7) OTHER: _Cleanout three subdrain outlets and acquire camera inspection <br />0 (8) OTHER: See additional recommendations in 2013 Detailed Inspection Report regarding flood hydraulics <br />❑ (9) OTHER: <br />ENGINEERING • EMPLOY AN ENGINEER EXPERIENCED IN DESIGN AND CONSTRUCTION OF DAMS TO: <br />(Plans and specifications to be improved 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 SIZE OF FLOOD BYPASS /SPILLWAY: <br />❑ (14) PREPARE PLANS AND SPECIFICATIONS FOR AN ADEQUATE SPILLWAY <br />❑ (15) SET UP OR IMPROVE MONITORING SYSTEM: <br />0 (16) OTHER: See 2013 Detailed Inspection Report for recommendations <br />❑ (17) OTHER: <br />Recommended schedule for upgrades /implementation of recommendations (please prioritize and note importance of each): <br />1) 2014 Toe drain uncovering /camera inspection, 2) 2014 erosion gulley repair, 3) See 2013 Detailed Inspection Report for other items; <br />Attachments: Piezometer readings, Photo Log <br />❑ Photographs 2 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: �� D _ Date: 5/15/2014 <br />Reviewed by: Date: <br />Owner /Owner's Representative <br />Page 3 of 4 <br />