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~? of assumptions and an empirical relationship the recharge rate is <br />calculated below: <br />• 325.5 ac of recharge area (to be mined) <br />• Porosity (n) of the overburden = 6% <br />• Annual variation of water levels <br />1) Well UC-1 = 8.9' <br />2) Well UC-2 = 2.3' <br />3) Well UC-3 = 1.9' <br />• Average water level variation = 4.4' <br />• Recharge rate (inches/year) _ (n)(water level variation) <br />• Recharge rate = (.06)(4.4')(12"/ft) <br />• Recharge rate = 3.2"/year <br />This rate is based only on 1 years worth of data and it is assumped <br />that the actual recharge rate is actually somewhat lower. The recharge <br />to the aquifer system is limited to periods of snow pack infiltration <br />during winter and early spring. During the growing season a net deficit <br />of soil moisture and deep recharge occurs. <br /> <br />.- ,,, ~ 51, ~ ~I ~ ~..... ~ ~ - -- .y,. ,~:. ~~ <br />