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Meteorological Data <br />Precipitation data was obtained at the Seneca II Mine using a Belfort <br />Weighing Bucket Rain Gage. Daily precipitation data for this year are <br />presented in Table 1. Total monthly precipitation data collected since <br />1981 are presented in Table 2. Where indicated, data from the U.S. <br />Weather Service - Hayden StaY.ion were used. Temperature, wind speed and <br />direction data are presented in Appendix B of the Seneca II-W AHR. The <br />Seneca II-W Mine Meteorological Station located approximately seven <br />miles southwest of the Seneca II Mine. Climatic conditions are similar <br />between the two mines. <br />Data from the National Climatic Data Center's Hayden Station is used <br />here to evaluate the precipitation trend. For this year, 21. 14 inches <br />of precipitation was measured, which is 3.80 inches (22~) above the <br />1971-2000 average. All months except February, April, May and June were <br />above average. Snowpack runoff, as estimated by totaling November <br />through March precipitation values, was 9.25 inches, which was 2.07 <br />inches (29 ~) above the 1971-2000 average. <br />The Seneca II precipitation gage measured 18.80 inches this year. This <br />value is 0.30 inches (2 ~) above the 1981-2006 average. Snowpack runoff, <br />estimated using the Seneca II precipitation gage, was 7.47 inches <br />(November-March total), which is 0.11 inches (2 ~) above the Seneca II <br />1981-2006 average. These values are more relevant than the Hayden <br />Station data when evaluating the spring runoff observed this year at <br />Seneca II. <br />Ground Water <br />Water Levels. Water level data are presented in Appendix B. Water <br />level reports for data collected since 2001 are presented immediately <br />after the water level hydrograph of all historic data for each <br />respective well. By presenting all historic data, trends related to <br />seasonal and annual variability and possible mining related impacts are <br />more clearly evident. Table 3 (Summary of Ground Water Monitoring <br />2 <br />