Laserfiche WebLink
DAM NAME: San Luis Tailing Dam <br />DATE OF REPORT: 05/15/14 <br />Condition does not currently threaten impoundment but needs repair and possible riprap to prevent future <br />erosion. <br />TAILING DAM INSPECTION FORM <br />Directions: Mark and X for conditions found and underline words that apply <br />SEEPAGE AND DRAIN OUTFALL <br />PROBLEMS NOTED: ❑ (30) NONE <br />❑ (31) SATURATED EMBANKMENT AREA ❑ (32) SEEPAGE EXITS ON DAM <br />❑ (33) SEEPAGE EXITS AT POINT SOURCE <br />0 (34) SEEPAGE AREA AT TOE <br />DRAIN OUTFALL SEEN: ❑ YES 0 NO <br />0 (35) FLOW ADJACENT TO DRAIN PIPE ❑ (36) DRAIN OUTFLOW TURBID <br />0 (38) OTHER: Three subdrain lines for tailings impoundment. All are covered due to local <br />❑ (37) DRAIN DRY /OBSTRUCTED <br />slumping. Drains need to be uncovered. <br />SHOW LOCATION OF DRAIN ON SKETCH <br />AND INDICATE AMOUNT AND QUALITY OF SEEPAGE <br />See 2013 Detailed Inspection Report for location; approximately 30 gpm clear flow <br />CONDITIONS OBSERVED: <br />❑ GOOD ❑ ACCEPTABLE ❑ POOR <br />STORM WATER MANAGEMENT SYSTEM <br />PROBLEMS NOTED: ❑ (40) NONE <br />❑ (41) NO EMERGENCY SPILLWAY <br />❑ (42) EROSION AT DROP STRUCTURE <br />❑ (43) CONCRETE DETERIORATED /UNDERMINED ❑ (45) STRUCTURE MAY BE TOO SMALL <br />❑ (46) DIVERSION CHANNEL EROSION <br />❑ (47) INADEQUATE CHANNEL FLOW CAPACITY ❑ (48) CHANNEL FLOW OBSTRUCTED <br />D (49) OTHER: See 2013 Detailed Inspection Report for hydraulic analyses regarding Drop Structure <br />CONDITIONS OBSERVED: <br />❑ GOOD 0 ACCEPTABLE ❑ POOR <br />MONITORING <br />EXISTING INSTRUMENTATION FOUND: <br />❑ (50) NONE ❑ (51) GAGE ROD IN POOL AREA 0 (52) PIEZOMETERS <br />❑ (53) SEEPAGE WEIRS /FLUMES <br />❑ (54) SURVEY MONUMENTS ❑ (55) OTHER <br />MONITORING OF INSTRUMENTATION: <br />❑ (56) NO 0 (57) YES <br />PERIODIC INSPECTIONS BY: <br />0 (58) OWNER ❑ (59) ENGINEER <br />See attached piezometer measurements <br />CONDITIONS OBSERVED: <br />0 GOOD ❑ ACCEPTABLE ❑ POOR <br />MAINTENANCE AND REPAIRS <br />PROBLEMS NOTED: ❑ (60) NONE <br />❑ (61) ACCESS ROAD NEEDS MAINTENANCE ❑ (62) CATTLE DAMAGE <br />❑ (63) BRUSH ON: UPSTREAM SLOPE /BEACH, CREST, DOWNSTREAM SLOPE, TOE <br />❑ (64) RODENT ACTIVITY ON: UPSTREAM SLOPE /BEACH, CREST, DOWNSTREAM SLOPE, TOE <br />0 (65) OTHER: erosion gully repairs needed <br />CONDITIONS OBSERVED: <br />0 GOOD ❑ ACCEPTABLE ❑ POOR <br />Page 2 of 4 <br />