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f• Flow rate 3.OS 3.13 19.8 20 0.2 04/27/98 03/18/96 Increasing <br />LGSC: <br />Parameter Mean dev Range Max. Min. Max at Min at Trend <br />Lab H 8.01 0.23 2.4 8.5 6.1 08/19/91 05/14/91 Level <br />Lab Cond. 1703.38 317.35 2659 2820 161 01/19/93 06/23/92 Increasing <br />TDS 1339.89 358.16 3420 4050 630 11/08/00 05/23/95 Increasin <br />Sulfate 657.71 162.16 710 945 235 12/04/89 05/20/97 Decreasin <br />Calcium 141.24 26.16 198 208 10 12/28/89 3/13/84 Level <br />Iron 0.60 0.63 4.24 4.27 0.03 04/27/98 02/01/88 Level <br />Magnesium 146.57 30.24 225.3 226 0.7 12/04/89 05/20/97 Increasing <br />Sodium 72.66 26.08 144.3 164 19.7 10/08/98 04/17/00 Increasin <br />Flow rate 4.14 5.32 46.94 47 0.06 04/27/98 12/06/99 Decreasing <br />LTC: <br />• <br />Parameter Mean dea Range Max. Min. Max at Min at Trend <br />Lab pH 8.09 0.27 1.6 8.6 7 02/25/91 02/22/89 Increasing <br />Lab Cond. 1592.35 438.92 3370 3570 200 06/06/98 02/28/90 Increasin <br />TDS 1127.76 355.76 1786 1930 144 12/05/89 02/28/90 Increasing <br />Sulfate 512.25 211.36 1109 1128 19 10/05/89 02/28/90 Increasin <br />Calcium 90.86 25.92 108.2 134 25.8 02/24/86 02/OS/O1 Decreasing <br />Iron 4.94 18.67 131.99 132 0.01 02/28/90 09/13/95 Increasing <br />Ma esium 116.88 45.65 230 238 8 10/12/88 02/28/90 Increasing <br />Sodium 92.79 36.07 168 174 6 10/05/89 02/28/90 Increasin <br />Flow rate 0.44 .90 6.3 6.3 0 04/29/86 12/13/02 Decreasing <br />Colowyo currently samples each ground water site for a variety of quality parameters. Of <br />all the parameters that are analyzed for, several key indicator parameters are identified. <br />These are lab pH, lab conductivity, TDS, sulfate, calcium, iron, magnesium, sodium and <br />elevation. Statistical analysis is completed and illustrates historical trends for each <br />parameter in Exhibit 2B. <br />Ground Water Data -The Rz value for linear regression is indicated below. <br />Site Id Lab <br />H Lab <br />Conductive TDS Sulfate Calcium Iron Magnesium Sodium Elevation <br />feet) <br />A-6 0.004 0.0089 0.0302 0.047 0.0204 0.0081 0.0007 0.0112 0.0239 <br />NGSW 0.008 .001 0.0098 0.0398 0.0142 0.2275 O.000OS 0.1656 0.0257 <br />Gossard 0.0726 O.S6S7 0.752 0.6622 0.4228 0.0654 0.4218 0.0267 0.4431 <br />• <br />CF lZl4 2006 <br />