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<br />CYPRUS YAMPA VALLEY COAL CORPORATION: MINE NO.7 <br />1998 ANNUAL HYDROLOGIC REPORT <br />SUMMARY OF WATER LEVEL DATA <br /> Average Std. Dev. Maximum Minimum Count Begin End <br />1 18.66 6.22 39.80 10.52 72 11/06(79 09/15198 <br /> <br />WATER LEVEI_brw <br />TABLE 7B WELL: 08798 (009-79A) <br />