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• • • <br />HG COAL COMPANY <br />POND HG-8 <br />SAMPLE AG AL AL AL ALK AS AS 8 B BICARB CARB CA CD CD CD CL COND CR CR CR CU CU <br />DATE diss diss tot lot rec as CaC03 diss lot rec diss tot as CaC03 as CaC03 diss diss tot tot rec @ 25C hexavalenl trivalent tot rec diss tot <br /> mg/I mgll mg/I mg/1 mg/I mg/I mg/I mg/I mg/I mg/I mg/I mg/I mg/I mg/I mg/I mg/I umohs mg/I mg/I mg/I mg/I mg/I <br /> <br />01!22/98 3590 <br />02/27/98 3620 <br />03/17/98 3330 <br />04/29/98 1190 <br />05/07/98 -0.005 0.38 0.06 658 -0.001 0.12 0.12 658 -2 157 -0.003 -0.003 5 1890 -0.005 -0.01 -0.01 -0.01 -0.01 <br />07130198 3600 <br />08/21 /98 4000 <br />09/22/98 3810 <br />10/30/98 3640 <br />11/24/98 -0.01 0.14 0.17 970 0.001 0.21 0.22 970 -2 174 -0.006 -0 006 14 3550 -0.005 -0 02 -0 02 -0.02 -0.02 <br />12/16/98 3880 <br />NUMBER 7 0 6 3 9 0 7 7 5 9 7 14 7 1 3 7 40 7 6 7 7 5 <br />MINIMUM -0.01 0 14 -0.06 184 -0.002 0 09 0.12 164 -2 52 -0 006 -0 003 -0.03 4 1190 -0.005 -0 02 -0.02 -0.02 -0 02 <br />MA%IMUM -0 005 9 0.17 970 0 002 0.21 0 27 970 -2 182 -0.003 -0.003 -0 003 14 4000 -0 005 -0.01 -0.01 -0.01 0.01 <br />MEAN 0.0032 1.7 0.0867 754 0.0010 0.18 0.20 754 1 120 0.0024 0 0015 0.0065 10 3178 0 0025 0.006 0.0066 0.008 0 008 <br />STD DEV 0 0011 3 3 0.0602 265 0 0005 0.05 0.05 265 0 49 0.0007 D 0.006 4 798 0 0.002 0.0023 0.002 0 002 <br />#<DL 7 0 0 1 0 0 3 0 0 0 7 0 7 1 3 0 0 7 6 7 7 4 <br />Notes: Blank value indicates analysis not pedormed for that parameter. <br />"' indicates result below laboratory detection limit. 1/2 the detection limit is used for the purpose of calculating mean and standard deviation. <br />Data shown does not represent complete data set. Results of NPDES sampling from 1987 through 1995 are not presented <br />(s) indicates suspect data <br />File 995faf5. 1/1u99 Page ~ o/ 6 <br />