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HG COAL COMPANY <br /> SURFACE WATER MONITORING FIELD DATA <br />• SAMPLE SAMPLE COND pH TEMP DO TURB FLOW REMARKS <br /> SITE DATE umohs/cm s.u. deg. C mg/I NTU cfs <br /> <br /> LHG 04/30/85 920 8.7 19.7 0.72 <br /> LHG 10!07/85 1810 8.3 8.0 0.6 <br /> LHG 04/08/86 1570 8.5 13.5 0.26 <br /> LHG 11119!86 1880 7.7 4.7 0.7 <br /> LHG 04/01/87 0.01 <br /> LHG 05/05/87 1790 8.6 18.0 0.47 <br /> LHG 09/25/87 1700 7.8 15.0 <.1 <br /> LHG 06/28/88 1775 7.7 19.0 '1 <br /> LHG 08111/88 0.5 <br /> LHG 05/26/89 2450 8.4 '1 <br /> LHG 10/05/89 3890 8.9 0.5 <br /> LHG 06/15/90 2440 8.6 12.0 <t <br /> LHG 09/20/90 <1 <br /> LHG 05/08191 1773 8.2 11.0 .OS <br /> LHG 10/03/91 0.02 <br /> LHG 04/28/92 14 0.02 <br /> LHG 08/18/92 0.005 <br /> LHG 05/04/93 905 8.1 13 0.18 <br /> LHG 08/30/93 3280 8.2 11 0.07 <br /> LHG 05/05/94 3010 7.4 12 0.045 <br /> LHG 09106!94 3580 8.1 13 0.011 <br /> LHG 06/27/95 3070 8.25 17.6 Flow not measwed <br /> LHG 10/10/95 3620 7.89 16.8 Flow not measured <br />. LHG 04/16/96 1340 8.11 12.8 8.5 0.35 Fiow estimated <br /> LHG 05/13/96 2360 8.17 20.3 5.9 0.6 <br /> LHG 10/25196 3070 7.74 3.1 8.2 0.27 <br /> LHG 10/28/96 3760 7.57 3.9 0.27 Flow estimated <br /> LHG 11/01/96 3210 8.27 5.0 8.1 0.14 <br /> LHG 03/26/97 1790 8.12 Fiow not measured <br /> LHG 05/13/97 1640 8.34 19.9 10.2 1.4 0.95 <br /> LHG 10/16/97 2490 8.47 4.2 7.1 15.0 0.3 <br /> LHG 02/27/98 2390 8.14 2.8 Flow not measured <br /> LHG 05/07!98 1645 8.5 7.6 5.2 1.6 1.95 <br /> LHG 06/18/98 2190 8.23 18.9 Flow not measured <br /> LHG 11/24/98 2570 8.54 3.3 8.6 2.6 0.15 <br />• <br />Page 1 <br />