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<br />Health in the technical evaluation of tailing impoundments through a Memorandum of <br />Understanding, participate in the state's joint review process with the Department of Natural <br />Resources, provide technical assistance to the Division Engineers' offices on dam safety, and <br />perform other related work as assigned, <br /> <br />2.4 Summary of Colorado Dams <br /> <br />Table I summarizes the distribution of dams by division, ownership, and hazard class in <br />Colorado. Currently, the program oversees a total of about 2,900 dams within Colorado, Of <br />these, 1,861 are considered jurisdictional dams, of which about 1,737 are non-federal dams. Of <br />the non-federal dams, approximately 572, or about one-third of the total non-federal dams in <br />Colorado, are classified as dams that, in the event of a failure, would be expected to cause loss of <br />life and/or significant property damage. <br /> <br />2.5 ASCE Report Card on Dam Safety <br /> <br />2.5.1 General- Recently, the American Society of Civil Engineers (ASCE) spearheaded an <br />effort to evaluate or "grade" the condition of the nations aging infrastructure. This has included <br />buildings, highways, bridges, and dams, among other infrastructure features, In Colorado, this <br />effort has been guided under the Colorado Section of ASCE, Government and Public Affairs <br />Committee (GPAC). Within the GPAC, a Dam Safety Advisory Board was formed in the spring <br />of 2002 to evaluate Colorado's dams. This advisory board consisted of members from federal <br />agencies (U.S. Bureau of Reclamation and Army Corps of Engineers), state agencies (Division <br />of Water Resources and Colorado Water Conservation Board), and representation from private <br />industry. <br /> <br />The full ASCE report card can be viewed at http://sections,asce,org/colorado/RC/main,htm. <br /> <br />2.5.2 Categories and Grading Criteria - The following general criteria for grading was <br />established by the GP AC for all infrastructure categories: <br /> <br />(I) condition and performance indices; <br />(2) need vs. capacity; and <br />(3) funding vs. need. <br /> <br />The Dam Safety Advisory Board reached a consensus on the specific definitions that would be <br />considered for each of these three criteria under the dam safety category. Each criterion was <br />assigned equal weight (33Y:. percent) to compute the composite grade. The grading criteria are <br />defined as follows; <br /> <br />Criterion 1: Condition Index <br /> <br />The condition index criterion characterizes the physical condition of dams in Colorado. <br />Condition index scales are shown on the table below. This scale is based on the Colorado <br />Division of Water Resources categories that are more compatible with our inspection criteria. <br /> <br />4 <br />