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N1G:NEER'S INSPECTICN REFC'RT <br />DAM NAME: ":COUNT PISGAH <br />GUIDELINES FOR DETERMINING CONDITIONS <br />DATE. 8/2812011 <br />DAM I.D.: 120129 <br />CONDITIONS OBSERVED -APPLIES TO UPSTREAM SLOPE, CREST, DOWNSTREAM SLOPE, OUTLET, SPILLWAY <br />GOOD <br />!n general, this part of the structure has a near new <br />appearance, and conditions observed in this area do not <br />appear to threaten the safety of the dam. <br />GOOD <br />No evidence of uncontrolled seepage_ No unexplained <br />increase in flows from designed drains. All seepage is <br />clear. Seepage conditions do not appear to threaten the <br />safety of the dam. <br />GOOD <br />Monitoring includes movement surveys and leakage <br />measurements for all dams, and piezometer readings for <br />High hazard dams. Instrumentation is in reliable, working <br />condition. A plan for monitoring the instrumentation and <br />analyzing results by the owner's engineer is in effect. <br />Periodic inspections by owners engineer. <br />ACCEPTABLE <br />Although general cross- section is maintained, surfaces <br />may be irregular, eroded, rutted, spalled, or otherwise not <br />in new condition. Conditions in this area do not currently <br />appear to threaten the safety of the dam. <br />CONDITIONS OBSERVED - APPLIES TO SEEPAGE <br />ACCEPTABLE <br />Some seepage exists at areas other than the drain outfalls, <br />or other designed drains. No unexplained increase in <br />seepage. All seepage is Gear. Seepage conditions <br />observed do not currently appear to threaten the safety of <br />the dam. <br />POOR <br />Conditions observed in this area appearto threaten the <br />safety of the dam. <br />POOR <br />Seepage conditions observed appear to threaten the safety <br />of the dam. Examples: <br />1) Designed drain or seepage flows have increased without <br />increase in reservoir level. <br />2) Drain or seepage flows contain sediment, i.e., muddy <br />water or particles in jar samples. <br />3) Widespread seepage, concentrated seepage, or <br />ponding appears to threaten the safety of the dam. <br />CONDITIONS OBSERVED - APPLIES TO MONITORING <br />ACCEPTABLE <br />Monitoring includes movement surveys and leakage <br />measurements for High and Significant hazard dams; <br />leakage measurements for Low hazard dams. <br />Instrumentation is in serviceable condition. A plan for <br />monitoring instrumentation is in effect by owner. Periodic <br />inspections by owner or representative. OR, NO <br />MONITORING REQUIRED. <br />POOR <br />All instrumentation and monitoring described under <br />"ACCEPTABLE" here for each class of dam, are not <br />provided, or required periodic readings are not being made, <br />or unexplained changes in readings are not reacted to by <br />the owner. <br />CONDITIONS OBSERVED - APPLIES TO MAINTENANCE AND REPAIR <br />GOOD <br />Dam appears to receive effective ongoing maintenance <br />and repair, and only a few minor items may need to be <br />addressed. <br />SATISFACTORY <br />The safety inspection indicates no conditions that appear to <br />threaten the safety of the dam, and the dam is expected to <br />perform satisfactorily under all design loading conditions. <br />Most of the required monitoring is being performed. <br />FULL STORAGE <br />Dam may be used to full capacity with no conditions <br />attached. <br />High hazard <br />Loss of human life is expected in the event of failure of the <br />dam, while the reservoir is at the high water line. <br />ACCEPTABLE POOR <br />Dam appears to receive maintenance, but some Dam does not appear to receive adequate maintenance. <br />maintenance items need to be addressed. No major repairs One or more items needing maintenance or repair has <br />are requirecl begun to threaten the safety of the dam. <br />OVERALL CONDITIONS <br />CONDITIONALLY SATISFACTORY <br />The safety inspection indicates symptoms of structural <br />distress (seepage, evidence of minor displacements, etc.), <br />which, if conditions worsen, could lead to the failure of the <br />dam. Essential monitoring, inspection, and maintenance <br />must be performed as a requirement for continued full <br />storage in the reservoir. <br />SAFE STORAGE LEVEL <br />CONDITIONAL FULL STORAGE <br />Dam may be used to full storage if certain monitoring, <br />maintenance, or operational conditions are met <br />HAZARD CLASSIFICATION OF DAMS <br />Significant hazard <br />Significant damage to improved property is expected in the <br />event of failure of the dam while the reservoir is at the high <br />rater line, but no loss of human life is expected. <br />UNSATISFACTORY <br />The safety inspection indicates definite signs of structural <br />distress (excessive seepage, cracks, slides, sinkholes, <br />severe deterioration, etc.), which could lead to the failure of <br />the dam if the reservoir is used to full capacity. The dam is <br />judged unsafe for full storage of water. <br />RESTRICTION <br />Dam may not be used to full capacity, but must be <br />operated at some reduced level in the interest of public <br />satety. <br />Low hazard <br />Loss of human life is not expected, and damage to <br />improved property is expected to be small, In the event <br />of failure of the dam while the reservoir is at high water <br />fine. <br />NPH hazard - No loss of life or damage to improved property, or loss of downstream resource is expected in the event of failure of <br />the dam while the reservoir is at the high water line. <br />Page 5 of 5 <br />