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<br />TABLE: S <br />COLORADO YAMPA COAL COMPANY: MINE 1, 2 AND ECKMAN PARK MINE <br />1999 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />SITE: 0159 (We110015-5) <br /> <br />DATUM = 6804.95 <br />CATEGORY PARAMETER ANALYSIS TYPE UNITS OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br />FIELD MEASURES DATE 10/19198 11/6/98 12/8/98 1/19/99 2/24/99 3/18/99 4/15/99 5/6/99 6/24/99 7/28/99 8/19/99 9/22/99 <br /> WATER ELEVATION ___ <br />FT_ _ 6801.99 6802.06 6802.02 6801.99 6802.01 6803.5 6802.71 6803.28 6802.06 6801.87 6_8.0.1 51 _6.8_01.57 <br /> WATER LEVEL FT 2.96 2.89 2 93 2.96 2.94 1.45 2.24 1.67 2.89 3.08 3.44 3.38 <br />PHYSICAL PROPERTIES TEMPERATURE FIELD DEGREES C 11 4 11.4 10.2 7.3 7.1 6.1 6 1 7.8 8.7 10 7 10.8 9.9 <br /> CONDUCTIVITY FIELD UMHOSICM 1960 2030 1930 1950 1910 2020 1880 194D 1990 2260 2300, 2310 <br /> LAB UMHOS/CM 1950 2150 2130 2180 <br /> PH FIELD PH 7.66 7.94 7.93 7.98 7.85 7.68 7.92 7 6 7.91 7 76 7.71 i 7.76 <br /> LAB PH 8.1 7.9 8 7.4 <br /> ALKALINITY TOTAL MG/L 548 499 497 490 <br /> HARDNESS _ AS CACO3 MG/L 653 Y 707 652 775__ <br /> SOLIDS TOTAL-DISS MG/L 1410 1560 1550 1600', <br />CATIONS CALCIUM DISSOLVED MG/L 156 169 156 185 1 <br /> MAGNESIUM DISSOLVED MG/L 64 69.2 63.7 76.1 <br /> SODIUM DISSOLVED MG/L 227 i 229 _ __ 219 222 _ <br /> SAR NOT APPLICABLE UNDEFINED 3.91 3.79 3.78 3.51 <br />ANIONS BICARBONATE AS HCO3 MG/L 669 609 <br />_~ 606 598 <br /> CARBONATE AS CO3 MG/L < 2 < 2 < 2 < 2 <br /> HYDROXIDE AS OH MG/L <2 ~ <2 <2 <2 <br /> SULFATE NOT APPLICABLE MG/L 630 730 730 750 <br />PRIMARY CADMIUM DISSOLVED UG/L <.5 <.5 <.5 < 5 <br /> LEAD DISSOLVED UG/L <40 <80 <40 <br />~ ~ <40 <br /> <br />MERCURY <br />DISSOLVED <br />UG/L <br />_<.2 <br />< 2 _ <br /><,2 ___ __ <br />1 <br /><.2 <br /> SELENIUM DISSOLVED UG/L < 1 < 1 < 1 < 1 <br />SECONDARY IRON DISSOLVED UGIL 30 _ 130 300 450 <br /> MANGANESE DISSOLVED UG/L 126 123 125 137 <br />TRACE METALS _ <br />MOLYBDENUM DISSOLVED UG/L c 20 30 < 10 < 10 <br />NUTRIENTS NITROGEN AMMIUM-TOTAL MG/L 11 ~ 0.02 0.03 0.02 <br /> AMMIA-FREE MG/L 0.19 7.14 6.18 _ 4.93 <br /> NITRATE MG/L 0.03 0.03 <.02 <,02 <br /> NITRITE _ MG/L <.01 <.01 <.01 <.01 <br /> NO3+NO2 MG/L 0.03 0.03 <.02 <,02 <br /> PHOSPHATE ORTHO-DISS MG/L 1.09 0.483 0.097 0.007 <br />I sEN,ENVIRONMENT~LUHRIIVW~LYCCITn BLESWM'ells ~b ~7~p9 py. g(15gp <br />