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TABLE 11 CYPRUS YAMPA VALLEY COAL CORPORATION; FOIDEL CREEK MINE 1995 ANNUAL HYDROLOGY REPORT HYDROLOGY MONITORING DATA SITE: WELL 009-S-10 DATUM 6906.67 Field: ~::: ~~~: ~: ~:~~~:~: ~.. .: ~:~:~:~~ ~~ ~ ~~ .. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP .. ... Parameters::: ~; ~~.:~:~:.:~::~~ :: ~.:.:., O~ATE:.' 10/27/94 11/21/94 12/31/94 01/18/95 02/16/95 03/29/95 04/26/95 05/10/95 06/05/95 07/10/95 08/01/95 09/04/95 Water Depth Iftl 6.10 6.00 6.00 6.10 5.50 5.40 5.10 4.61 4.81 3.81 4.21 6.32 Elevation Ift above msll 6900.57 6900.67 6900.67 6900.57 6901.17 6901.27 6901.57 6902.06 6901.86 6902.86 6902.46 6900.35 Temperature IC°1 11 10 8 7 7 8 10 8.6 6.7 11.6 12.4 14.6 Conductivity lumhos/cml 1270 1130 1100 3120 1130 1060 970 1250 1300 1240 1280 1250 pH 7.7 8.1 8.0 8.1 7.7 7.6 7.7 8.0 7.8 7.8 6.0 8.1 leb :..:.:.... .:.::.::::.:::..: .::::' :.::.: . atam®tar3 :~~.:: ~.:.::: ~: ~.'~:. ~:: ~ .' ~:: ~..:~:: ~:: Conductivity @ 25 C° lumhos/cml 1210 1220 1220 1220 Total Alkalinity Img/II 430 466 439 437 Hardness as CaCO3 Img/11 199 185 203 175 Solids, total dissolved (mg/II 740 760 750 761 Bicarbonate as HCO3 Img/II 516 559.2 526.8 524.4 Carbonate as CO3 Img/II -2 -2 -2 -2 Sulfate Img111 210 210 220 220 Calcium, dissolved Img/II 45 39 43.9 37 Magnesium, dissolved Img/II 21 21.3 22.6 20 Sodium, dissolved Img/II 210 199 226 191 SAR in Water 6.44 6.99 6.36 Cadmium, dissolved lug/p -0.1 -0.5 -0.5 -0.5 Lead, dissolved lug/II -20 -20 -20 -20 Mercury, dissolved lug/II -0.2 -0.2 -0.2 -0.2 Selenium, dissolved lug/Il -1 -1 -1 -1 Iron, dissolved lug/II 40 30 80 20 Manganese, dissolved lug/II 10 6 14 -5 Molybdenum, dissolved lug/II -10 -10 -10 -10 Nitrogen ammonia Imglll -0.05 -0.05 -0.05 -0.05 Nitrate as N, dissolved Img/II 1.18 1.09 1.34 Nitrate/Nitrite as N Img/II 1.4 1.18 1.09 1.34 Phosphorus, ortho diss Img/II -0.005 -0.005 -0.005 0.054