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Y <br />Division Concern: <br />4. On pages 2.04.7-1 and 2.04.7-27, it is stated that the average <br />precipitation is 21.5 inches. This is supported by water balance data <br />collected by VTN and the USGS, which is presented on pages 2.04.7-46 <br />thru 50. However, the climatological data presented in Section <br />2.04.8, and the estimate in the original permit of 16 inches per year, <br />are not in agreement with this new estimate. Colowyo should explain <br />these differences, and either substantiate or revise the annual <br />precipitation estimate. <br />Response- <br />Throughout the Danforth Hills area and in other highland areas in <br />Northwest Colorado, there is a great degree of local variations in <br />precipitation from season to season, day to day, and location to <br />location. It is typical during the winter to receive several inches <br />of snowfall at the Colowyo Pit at an elevation of 7500 feet, while <br />receiving little to no snowfall at the Loadout and Administration <br />Building locations at an elevation of 6400 feet. <br />d% In summary, the variation in average precipitation estimates presented <br />by VTN, USGS, and the original Colowyo Permit is within the amount of <br />variation seen in precipitation within the Colowyo Permit Area. <br />Division Concern: <br />5. There should be some explanation made in the narrative of the <br />"storage" figure listed on the Theis plot of the Taylor Creek No. 1 <br />well on page 2.04.7-9. This was covered in the original PAR response <br />by Bishop Associates (1981). <br />Response- <br />The narrative on page 2.04.7-8 has been revised to address the <br />Division's Concern. (Revised page attached.) <br />Ok <br />-3- <br />