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'~ Brian Watterson <br />Page 4 <br />04/29/05 <br />• <br />Please explain these discrepancies. <br />Surface Water Monitoring <br />At this time, any potential surface water impacts cannot be determined. <br />Alluvial Water Monitoring <br />AVF-5 was sampled and analyzed for temperature, conductivity and pH as required. All <br />values are within the expected range and near the historical average established from <br />over 120 samples. <br />Groundwater/Mine Water Monitoring <br />10. The datum for TR-7A is listed as 6244 feet in Table 1 of the AHR but listed as <br />6220 feet in the data Table 5. tt appears that water level elevations and figures <br />use the 6220 value. Which is correct? <br />This concludes the Divisions adequacy review of the 2004 Annual Hydrology Report for <br />the Eagle Mine Complex. Please respond to the above issues within 30 days of receipt <br />of this letter. Thank you for your diligence in completing your monitoring program in <br />accordance with the approved plan. <br />• Sinc ely, ~~ <br />~'~""~ <br />Kent Gorham <br />Environmental Protection Specialist II <br /> <br />