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~~ TABLE 11 CYPRUS YAMPA VALLEY COAL CORPORATION; FOIDEL CREEK MINE 1994 ANNUAL HYDROLOGY REPORT HYDROLOGY MONITORING DATA SITE: WELL 009-5-10 DATUM 6906.67 Field ~~~~~.~:.:-:.:~~:'~'.:~~'~.::~:~:::~.':~~:::.:-:~:: i:.~~`::: i~.:.~~: r~.:::... OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP Parameter5~~.:::~~~::~~~';~;':i `;:`:::~:::~~~:::~:~:'DA.TE~:~: 10/20/93 11/11/93 12/20/93 01/78/94 02/17/94 03/18/94 04/15/94 05/12/94 06/15/94 07/29/94 08/16/94 09/21/94 Water Depth Iftl 6.000 5.900 6.000 6.000 6.000 4.900 3.500 3.900 4.500 6.670 6.500 6.350 Elevation (ft above msll 6900.67 6900.77 6900.67 6900.67 6900.67 6901.77 6903.17 6902.77 6902.17 6900.00 6900.17 6900.32 Temperature IC°) 13 10 7 6 7 11 12 13 13 14 16 12 Conductivity lumhos/cml 1210 1030 1160 1210 1028 800 890 1300 990 950 1130 1370 pH 8.1 8.2 8.1 7.9 6.1 7.9 8.0 8.1 7.8 7.6 6.7 8.0 Lap:: :>.:::;:.'..:::.: > .:: :.:.: ::::.:.': <:: ;`.:..::::.". . ....:........................:....:.. . . rams.tars"~;:~~~~~:;.:.:.>:';:~~~::~~:~::.::~::::':::::1;.;;:.~~. Conductivity @ 25 C° lumhos/cml 1217 1190 1195 1180 Alkalinity as CaCO3 Img/II 438 472 468 448 Hardness as CaC03 Img/II 191 194 200 165 Solids, total dissolved (mg/I) 752 726 710 746 Bicarbonate as CaCO3 Img/II 510 576 571 547 Carbonate as CaCO3 Img/II 12 0 0 0 Sulfate Img/II 214 208 208 249 Calcuim, dissolved Img/II 42 43 44 41 Magnesium, dissolved Img/1) 21 21 22 20 Sodium, dissolved Img/II 222 212 199 205 SAR in Water 6.9 6.6 6 6.5 Cadmium, dissolved lug/II -0.1 -0.1 -0.1 -0.1 Lead, dissolved lug/II -20 -20 -20 -20 Mercury, dissolved lug/II -0.2 -0.2 -0.2 -0.2 Selenium, dissolved lug/II -1 -1 -1 -1 Iron, dissolved lug/11 70 90 30 240 Manganese, dissolved lug/II -10 -10 10 20 Molybdenum, dissolved (ug/II -10 -10 -10 -10 Nitrogen ammonia (mglll -0.05 1.43 1.37 1.48 Nitrate as N, dissolved Img/II 0.95 0.06 0.03 0.1 Nitrate/Nitrite as N Img/II 0.95 0.1 0.03 0.13 Phosphorus, ortho diss Img/II 0.06 -0.01 -0.01 -0.01