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• Richard D. Piland & Associates <br />Hydrology Monitoring Report 2009 <br />Stream Flow Monitoring Data <br />The 2009 Water Year Discharge reports and hydrographs of the five stream flow <br />monitoring station are in Appendix A. There are three graphs for each station; one <br />representing daily flow in cubic feet per second, one representing monthly acre feet <br />totals and one of annual total discharge in acre feet. <br />The total precipitation for the 2009 Water Year was below average for the period <br />of record at the Colony Site. The winter snow pack was below average, with most of <br />the snow melting during the end of April. Spring moisture was above average. The late <br />summer months were dry and below average. Total precipitation for the water year was <br />17.54 inches of moisture, with the average being 20.5. <br />The 2009 Water Year total stream flow discharge was below average, probably <br />due below average snow pack. The snowmelt runoff was in April with stream flows <br />staying below average all summer. <br />Table 4 (with the graph titled Total Yearly Discharges) plots yearly stream flow <br />runoff discharge in acre feet for each year from 1998 through 2009. The graph shows <br />total runoff with the precip plotted against the second y-axis. <br />Table 5 lists the average monthly stream flow at each monitoring site for the <br />• period 1984 to 2009. The accompanying graph titled Average Monthly Discharge <br />clearly shows peak discharges are usually during May. In 2009 stream discharge <br />peaked during first of May from the snowmelt runoff. <br />Stream flow water quality samples collected for each site are listed in Table 2. <br />During the 2009 Water Year samples were collected at F1 3R Davis Gulch (549N) and <br />Middle Fork @ Lab sites each quarter. Graphs were made of the water quality <br />parameters which are marked in Table 3. These water quality graphs are in Appendix <br />B. Parameters were not graphed when the analyte result was below the practical <br />quantitation limit. Sampling sites were changed in 1993 to two sites, F13R Davis Gulch <br />and Middle Fork @ Lab ( F1 R when MF@ Lab is dry). During 1997 the surface water <br />quality parameters and chain of custody procedures were changed. Sampling <br />parameters are outline in batteries for each type of sample collected (ie.-Site Stream, <br />Site Well, or Site NPDES). Site Stream Battery A is listed in Appendix B. A separate <br />chain of custody form is now filled out for each Battery Type. Each Battery is then <br />logged by the Lab as a separate job which streamlines billing and reporting. <br />GROUNDWATER MONITORING WELLS <br />Groundwater monitoring wells are summarized in Table 6 showing well location, <br />completion interval, elevation, total depths and other data. <br />5