Laserfiche WebLink
• gage at its adjacent Seneca II Nine. Data fox this year are included on Table 1. A <br />summary of all data collected at that station is provided here in Table 2. <br />The Seneca II precipitation gage measured 18.81 inches this yeaz. This value is 0.61 <br />inches (36) less than the 1981-1999 average. <br />Data £rom the National Climatic Data Center £ot the Hayden Station was used to evaluate <br />the precipitation trend. For this yeaz, 18.74 inches oP precipitation rae measured, which <br />was 1.90 inches (llk) greater than the 1961-1990 avataga. All months but November, <br />December, Narch, and September were above average. 9norpack runoff, as estimated by <br />totaling November through April precipitation values, was 8.51 inches, which vas 0.10 <br />inches (lYl above the 1961-1990 average. <br />Ground Water <br />watez Levels. Table 3 provides a summary ofground water monitoring si tea at the Yoast <br />Mine. Water level data are provided in Appendix B. Water level repor to for this year are <br />presented immediately after the water level hydrograph of all data since 1991. water <br />' level measuramenta axe collected with an electrical rater level indicator or n steel tape. <br />ereeeure readings (in psi) obtained from floring cells rith pressure gages aze multiplied <br />by 2,31 to obtain head in feet. The torten[ ground watez monitoring program is presented <br />in Table 15-8 of the Yoaet Mine PAP. <br />- Alluvium. One cell, YAAL14, monitors the Armand Drar alluvium, Four wells, YGAL15 to <br />18, monitor the Grassy Creek alluvium. Nina calla: Y9AL1 to 6, 8, 30 and 12; monitor the <br />Saga Creek alluvium. Moat cell rater levels exhibit the typical seasonal fluctuation, <br />increasing water levels in the spring follored by deczeasing rater levels in the summer <br />and fall. Most wells exhibited rater levels this yeaz rithin their historic ranges. <br />Nelle YSAL3, 4, and 5 exhibited summer and fall rater levels lorez than ever observed. <br />This is likely due to the draining of the adjacent Pond Y1 prior to its raconatruction ae <br />Pond 012. Ground rater levels at these wells should return to normal after this pond <br />refills next yeaz. <br />- t.ennox Overburden. Two walla, YLOV3 and 4, monitor the Leru~ox overburden in the Saga <br />Creek basin. Both calla rare floring and fitted rith pressure gagea. Pressure <br />• <br />3 <br />