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<br />TABLE: 4 <br />COLORADO YAMPA COAL COMPANY: MINE 1, 2 AND ECKMAN PARK MINE <br />~~ 1999 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />SfTE: 068274C (We11006-02-74C) <br /> <br />DATUM = 6840.61' <br /> OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br />dfdfilllKS .... .......................... ....... <br />Elevation ft strove msl 6802.6 6801.1 <br />Water Level -38.04 -39.47 <br />TEMPERATURE FIELD DEGREES C 10.5 10.5 <br />CONDUCTIVITY FIELD UMHOSlCM 2390 2670 <br />PH FIELD PH 8.05 8.41 <br />~' '.;..~:.:':..;.:'..:.I;~.:~:..~'.:..:..~..::..;' .....::....:..::.'..'..:..::...:..;. ...::.::..:: <br />CONDUCTIVITY LAB UMHOS/CM 2290 2590 <br />PH LAB PH 6.8 5.9 <br />ALKALINITY TOTAL MG/L 47 17 <br />HARDNESS AS CACO3 MG/L 2B5 387 <br />SOLIDS TOTAL-DISS MG/L 1520 1740 <br />SAR UNDEFINED UNDEFINED 10.4 9.18 <br />CALCIUM DISSOLVED MG/L 56.1 B6 <br />MAGNESIUM DISSOLVED MG/L 35.2 41.8 <br />SODIUM DISSOLVED MG/L 400 410 <br />CARBONATE AS CACO3 MG/L -2 -2 <br />SULFATE NOT APPLICABLE MG/L 920 1080 <br />BICARBONATE AS HCO3 MG/L 58 21 <br />HYDROXIDE AS OH MG/L -2 -2 <br />CADMIUM DISSOLVED UG/L -0.5 -0.5 <br />LEAD DISSOLVED UG/L -40 -40 <br />MERCURY DISSOLVED UG/L -0.2 -0.2 <br />SELENIUM DISSOLVED UG/L -1 -1 <br />IRON DISSOLVED UG/L -10 1500 <br />MANGANESE DISSOLVED UG/L 444 496 <br />MOLYBDENUM DISSOLVED UG/L •10 -10 <br />NITROGEN NITRATE MG/L -2 -0.02 <br />NITROGEN NITRITE MG/L -0.01 0.01 <br />NITROGEN NO3+NO2 MG/L -0.02 -0.02 <br />PHOSPHATE ORTHO-DISS MG/L -0.005 -0.005 <br />I'~Ell~FflVpt01.T6M.U. AIIR ~'..•~~ 1 ~ r a~.l •.u 11, ~ ~.1 ~. <br />. '~' G_ ~: _ _ _ <br />"~tl a.s F! MI "iRi 1fP ' '~F ~ 117-.'I ~:~. , of _ I .~' r- - <br />