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approximately seven miles southwest of the Seneca II Mine. Climatic conditions are <br />similar between the two mines. • <br />Data from the National Climatic Data Center for the Hayden Station was used to evaluate <br />the precipitation trend. For Pater Year 1994, 73.23 inches of precipitation was measured, <br />which was 3.61 inches less than the 1961-1990 average. ALl months (except October and <br />April) were below average, with June and July being especially low. Snowpack runoff, es <br />estimated by totaling November through April precipitation values, was 5.89 inches, which <br />was 2.52 inches below the 1961-1990 average. This is the lowest snowpeck since 1981. <br />The Seneca [I precipitation gage measured 13.46 inches in Peter Yeer 1994. This value is <br />5.85 inches less than the 1981-1993 average. <br />Ground Wafer <br />Water Levels. Water Levels gathered since January, 1981 are presented in Appendix C. <br />Water level reports for each well ere presented immediately after the water level <br />hydrograph for each respective well in the same appendix. By presenting 14 years worth of <br />data, trends related to seasonal and annual variability and possible mining related • <br />impacts are more clearly evident. Table 3 (Summary of Ground Water Monitoring Wells) <br />is presented as a reference for the reader. No new wells were drilled in 1994. Pater <br />level measurements obtained in non-flowing wells are taken with either a Soil Test <br />M-scope, a Slope Indicator Pater Level Indicator, or in the case of a few shallow alluvial <br />wells, directly from a steel tape. Pressure readings (in psi) obtained from flowing wells <br />with pressure gages are multiplied by 2.31 to obtain head in feet. For the sake of <br />brevity, the GY-S prefix that precedes all well names will be dropped throughout this <br />report. As an example, Yell GY-S46-A will be referred to as Yell 46-A. <br />Alluvium. The alluvial monitoring wells are located along Cow Camp (Wells 46-A and 69•A ), <br />Bond (Yell 68-A), Grassy (Yells 33-A and 34-A), and Little Grassy Creeks (Wells 6-A, <br />31-A1, 37-A2, and 32-A). These wells exhibit seasonal fluctuations in water levels. The <br />spring runoff-infiltration stimulates a water level rise, and as the drier fall season <br />.fix.: - .-:~;..., -.~ lr.nt,~ .. ~ - w.+ o-'~xt~ <br />approaches, water levels decline. ~ ene~afl ~,; ~r-. yaa~er.'Sl'eve4•s'-were-deeper~th LS~year=*$ue~to-an <br />-~_-~- ~7 <br />fdec~c eas4'in pr`eci p~i~t~at i'on"from'_prev:rous~~yea rs. <br />Lennox Overburden/Lennox-Vadge Interburden. The four wells completed in these formations • <br />2 <br />