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<br />TABLE: 9 <br />CYPRUS YAMPA VALLEY COAL CORPORATION: MINE 1, 2 AND ECKMAN PARK MINE <br />1998 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />SITE: 09510 (We11009-SIO) <br /> <br />DATUM ~ 6906.67' <br />Ficld ~:::~:::::.~::.:::~:::~:..~:.~:~ :::::::::::::~:::.~:~~:;~~::::~::~:::~:~~)::.::~:;:::~~:~~:~:::.: OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUC SEP <br />Yrit'i~eekn::~~:::~~::~::::~:::.~:::~:~~:::.~:::~:::~:~::~:~:~'~~:~::~~~::::::~~':::~:~ ~.::":" 14.Oct-97 03-Nov-97 OB-Dec-97 19-Jan-98 19-Feb-98 03-Mar-98 13-A r-98 20-Ma -98 09-]un-96 13-Jul-98 06-AU -98 IS-Se -98 <br />Elevation (ft above msl) 6902 41 6902.62 6902 64 6902.48 6902.50 6902 49 6904.93 6903.99 6903 46 6902.66 6902.43 6902 27 <br />Wader Level 4 26 4 OS 4.03 4.19 4.17 4.18 1.74 2.68 3.2I 4.01 4 24 4 4 <br />TEMPERATURE FIELD DEGREESC 10 10 B 6 5 6 8 7 10 II II 11 <br />CONDUCTIVITY FIELD UMHOS/CM 1290 1270 1260 1230 1290 1250 1250 1290 1280 860 1330 1230 <br />PH FIELD PH 7.61 7.71 7.56 8.04 B.I I 8.15 7.96 7 84 7 73 7.6 7 8I 6 07 <br />Pan ~ elcry~.: ~'.:;:".':;:'::::~::: ~::.~ ~'''~::`:':::~~ ::::':~~:::~.:~::::'~ ~:,'::;::~ ii ~:: ~: <br />CONDUCTIVITY LAB UMHOS/CM 1240 1190 1170 1190 <br />PH LAB PH 7.8 8.1 8 7.7 <br />SOLIDS DISSOLVED MG/L 800 780 790 780 <br />ALKALINITY TOTAL MG/L 466 448 452 446 <br />HARDNESS TOTAL MG/L 208 206 213 213 <br />CALCIUM DISSOLVED MGh 46.8 45.3 48: 46.7 <br />MAGNESIUM DISSOLVED MGh 22.1 22.5 22.6 23.5 <br />SODIUM DISSOLVED MGh 214 217 225 227 <br />SAR NOT APPLICABLE UNDEFINED 6.57 6.66 6.78 6.84 <br />SULFATE NOT APPLICABLE MGh 200 230 230 280 <br />BICARBONATE AS HCO3 MGh 568 547 551 544 <br />CARBONATE AS CO3 MG/L -2 •2 -2 -2 <br />HYDROXIDE AS OH MG/L -2 -2 -2 -2 <br />CADMIUM DISSOLVED UGh 30 -0.5 -0.5 -0.6 <br />LEAD DISSOLVED UGh -40 -40 -40 -40 <br />MERCURY DISSOLVED UGh -0.2 -0.2 -0.2 -02 <br />SELENIUM DISSOLVED UGh -I -I -1 -1 <br />IRON DISSOLVED UG/L 210 30 30 BO <br />MANGANESE DISSOLVED UGh 338 14 -6 37 <br />MOLYBDENUM DISSOLVED UGh -10 -10 -10 -10 <br />NITROGEN AMMIUM-TOTAL MG/L 2.2 -0.05 -0.05 065 <br />NITROGEN AMMIA-FREE MG/L 0.01 -0.01 -0.01 0.01 <br />NITROGEN NITRATE MG/L 023 1.06 104 0.25 <br />NITROGEN NITRITE MGh 0 02 -0.01 -0 OI 0.07 <br />NITROGEN NO3+NO2 MG/L 025 I.OS 104 0.32 <br />PHOSPHATE ORTHO-DISS MGh 0.048 -0005 0.022 0.039 <br />