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PCC Meeting — October 05, 2010 <br />Version: October 5, 2010 <br />a. Total capacity charge — est $521,843 (June bill did not break out capacity and <br />energy charge thus est.) <br />b. Total energy charge — est $556,553 (June bill did not break out capacity and energy <br />charge thus est.) <br />c. Total charges - $1,078,396 <br />2. Hydrograph <br />a. The Animas River is continues to flow near historic lows, and will continue to <br />drive the pumping schedule. <br />3. Projected First fill Schedule <br />a. 90" percentile hydrology should result in a full reservoir by June 2011, assuming <br />all other operating conditions are ideal. <br />b. 50th percentile hydrology should result in a full reservoir by July 2011, assuming all <br />other operating conditions are ideal. <br />c. 101 percentile hydrology should result in a full reservoir by August 2011, assuming <br />all other operating conditions are ideal. <br />d. Model is very sensitive to changes in the hydrologic forecast. <br />4. Currently Critical Components <br />a. Crest gates <br />i. Temporary use of water to actuate gates. <br />b. Mechanical seal water system <br />i. New system is designed and installed <br />ii. Must wait for turbidity in the river to fully test (spring runoff) <br />c. Hydrology <br />i. Continues to be primary schedule driver <br />III. Review of Project Issue Notices <br />A. No PINS have been issued since the last meeting <br />IV. Status of Identified Significant Risks <br />A. Dam outlet works construction <br />1. No change in risk rating. <br />B. Reservoir First Fill <br />1. The filling of the dam has started and the first 30 -day reservoir `hold' period has been <br />completed. Performance of the dam has been satisfactory. Releases, if necessary, must <br />be through the tunnel that is functional. The structure and all associated features are <br />being monitored 24 hours per day, seven days per week, in accordance with the "Initial <br />Filling Criteria" during fill periods and `hold' periods. The 24/7 monitoring resumed on <br />February 28, 2010 in preparation for the resumption of pumping on March 4, 2010. <br />Pumping will continue for 12 to 24 months once pumping resumes. Risk of impacting <br />reservoir filling due to structural performance of the dam does not appear to be <br />increasing. <br />2. No change in risk rating <br />C. Hydrological events <br />1. The SNOTEL sites in the Animas River basin are currently at 112% of the average <br />Snow Water Equivalent (SWE) for this time of year. — Impacts to the first fill duration <br />are impossible to predict with certainty; however, it appears the first fill period will <br />extend into summer of 2011, at a minimum. <br />2. The risk rating was revised to show an increased risk rating. <br />13 <br />