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Keenesburg Mine 2016 Vegetation Monitoring Report <br />4 2015-2016 PRECIPITATION <br />The climate of the mine and surrounding area is typical of the region and characterized by cold <br />winters and hot, dry summers. CEC has collected local precipitation data at the mine since 1984; <br />however, only data from 1993 — 2016 is presented here to correspond with the duration of <br />vegetation monitoring (Appendix B). Average precipitation is generally lowest during the late <br />fall and winter (October through March) and peaks in April through June (Figure 4). <br />The Keenesburg Mine Reclamation Permit specifies the use of onsite precipitation from <br />September to July in calculating the vegetation cover and herbaceous production standards. Total <br />cumulative precipitation for the period from September 2015 — July 2016 was 16.4 inches. This <br />represents 139% of the average precipitation amount for the same period (1993-2015). The <br />pattern and timing of the precipitation was generally similar to the average; however, the peak <br />fell a little earlier than usual in April and there was another peak is July (Figure 4). Multiple rain <br />events from April 15 — July 29 resulted in a total of 21 days of rainfall and 11.4 inches which <br />was 154% of the average rainfall during this period. <br />Figure 4: 2014-2016 Precipitation and Average Annual Precipitation <br />6 <br />5 <br />2 <br />0 <br />Sep Oct Nov Dec Jan Feb <br />5 2016 PEST & DISEASE INSPECTIONS <br />Mar Apr May <br />Jun Jul Aug <br />Habitat Management was contracted to completed quarterly pest and disease inspections at the <br />Keenesburg Mine in 2015. These inspections were completed on March 16th, June 28th, August <br />29th, and October 12, respectively. The reports from each quarterly inspection are included in <br />Appendix D. <br />Habitat Management, Inc. 8 October 2016 <br />