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r~ <br />Review of USGS stream water quality data indicates no significant change in stream water <br />quality through 1997. Therefore, no effect on stream water quality was noted from the <br />WRN operation and none would be expected. The EX-2 monitoring well (quantity and <br />quality data) and the water well 90-1 (quality data) near the mining operation have indicated <br />effects of WRN's mining operation. But, wells up-dip and down-dip of the operation <br />indicate no mining effects (quality or quantity) on aquifers which contributed to springs flow <br />and therefore Piceance Creek flow. <br />6.1.4 Precipitation <br />• Precipitation gauges are located near injection well 90-5 (tipping gauge) and near <br />monitoring well EX-2 (V-gauge). Data reported below is a composite of precipitation from <br />the two gauges for the WRN mine site: <br />Precipitation Record linches) <br />1991 1992 1993 1994 1995 1996 1997 1998 <br />Jan 0.44 0.10 0.94 0.12 0.59 1.68 1.02 .69 <br />Feb 0.31 0.51 0.9 0.87 0.68 1.16 0.86 .99 <br />Mar 1.42 1.47 2.32 0.65 0.79 0.73 0.45 1.46 <br />Apr 0.90 1.06 2.29 1.01 2.81 1.85 2.44 1.44 <br />May 0.60 1.50 1.53 0.24 4.65 1.34 1.01 .83 <br />Jun 0.61 1.62 0.13 0.24 1.83 1.14 1.91 3.28 <br />Jul 0.87 2.04 0.17 0.8 0.39 0.85 1.04 1.98 <br />Aug 0.78 1.04 0.57 0.58 1.09 0.18 2.74 1.42 <br />Sep 1.30 0.92 0.12 1.76 1.26 1.35 4.83 .60 <br />Oct 1.25 1.25 2.21 0.78 1.34 1.71 1.27 1.65 <br />Nov 1.15 1.07 0.94 1.09 0.45 1.65 1.09 .81 <br />• Dec 0.42 .87 0.52 0.56 0.24 0.55 0.30 .90 <br />Annual Totals 10.05 13.45 12.64 8.7 16.12 14.19 18.96 16.05 <br />37 <br />