2010-05-03_REPORT - C1981035 (2)

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GCC Energy, LLC 2009 Annual Hydrology Report Hay Gulch Ditch Analysis June 23, 2009 DATE CALCIUM (mg/L) IRON ,mg/I) Mg (mg/L) Mn (mg/L) SODIUM (mg/L) Hardness, as CaCO3 Alkalinity, as CaCO3(,,,gL) Bicarbonate, as CaCO,(,,,,) Carbonate, as CaCO3(,,,,) Hydroxide, as CaCO3(,,,at) pH Sulphate (mg/L) T.D.S. (mg/L) Temperatue (x C) Depth to Water (in.) Conductivity: Field Data (pS/cm) 1/3/2005 48.4 0.050 15.6-- -<.005 6.1 185 103 103 <10 <10 7.93 57 45 1.7 N/A 348 3/17/2005 42.4 0.060 13.1 0.008 5.5 160 102 100 <10 <10 8.16 67 220 8 N/A 369 6/612005 36.3 0.070 14.4 0.005 6.3 150 98 96 <10 <10 8.32 62 205 12.4 N/A 331 8/512005 39.7 0.080 15.8 <.005 7 164 123 121 <10 <10 8.04 62 185 14.9 N/A 382 12/2/2005 78 0.050 44.5 0.008 21.3 378 252 240 12 <10 8.06 162 490 2.9 N/A 840 3/27/2006 48.7 0.050 21.5 0.007 9.4 210 139 133 <10 <10 8.32 96 280 6.3 N/A 495 6/28/2006 76.6 <.05 40.8 0.009 17.7 359 218 202 16 <10 8.45 185 420 20.3 N/A 768 8/3012006 41.8 <.05 15.1 0.005 6 167 101 97 <10 <10 8.58 77 195 23 N/A 373 12/6/2006 73.6 0.060 38.4 0.086 16.1 342 220 220 <10 <10 8.12 189 435 3.2 N/A 843 3/1212007 53.9 <.05 29.7 0.006 11.5 257 180 158 22 <10 8.64 130 270 12.5 N/A 600 6/30/2007 33.3 0.240 10.5 0.009 4.1 126 89 87 <10 <10 8.92 44 140 23 N/A 282 9/2/2007 28.2 0.100 7.1 0.007 2.3 100 82 80 <10 <10 7.75 30 95 19.3 N/A 233 3 major storm events in the past 3 days water muddy) 12/612007 33.8 0.053 10.8 <.005 4.1 128 84 84 <10 <10 7.97 57 140 3 N/A 349 3/31/2008 38.8 0.060 15 0.007 4.9 159 107 91 16 <10 8.58 72 140 12.4 N/A 384 6/30/2008 26.1 0.150 9.2 0.009 3.6 103 89 89 <10 <10 8.27 25 125 19.3 N/A 248 <.05 11.4 <.005 4.4 131 103 101 <10 <10 8.06 44 1 45 14.9 N/A 306 1 0.080 10.9 <.005 4.2 133 102 98 <10 <10 8.19 42 120 14.1 N/A 302 <.05 48 <.005 18.7 395 252 236 16 <10 8.34 164 460 3.9 N/A 815 <.OS 5.3 <.005 9 .1 73 54 54 <10 <10 7.87 22 95 12.9 N/A 163 Very low flow