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<br />TABLE 29 <br />BTU EMPIRE CORPORATION <br />2007 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONITORING DATA <br />SITE: WF2 (WILLIAMS FORK DOWNSTREAM) DATUM 6119.87 <br />CATEGORY PARAMETER ANALYSIS TYPE UNITS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC <br />FIELD PARAMETERS DATE 1/15/2008 2/13/2008 3/12/2008 4/15/2008 5/6/2008 6/18/2008 7/9/2008 8/20/2008 9/15/2008 10/13/2008 11/4/2008 12/22/2008 <br />PHYSICAL PROPERTIES TEMPERATURE FIELD DEGREES C 3.1 2.1 2.5 12 11.4 15.9 19.8 17.7 18.7 7.2 8.9 2.3 <br /> CONDUCTIVITY FIELD UMHOS/CM 590 520 620 690 390 210 320 470 500 550 570 610 <br /> LAB UMHOS/CM 600 370 480 520 <br /> PH FIELD PH 8.06 8.22 8.39 8.36 7.82 8.28 7.47 7.76 7.96 7.59 7.62 <br /> LAB PH 8.1 7.99 _ 8.31 7.8 8.26 <br /> ACIDITY AS CAC03 MG/L < 1 <1 <1 <1 <br /> SOLIDS SUSPENDED MG/L <5 <5 8 100 880 70 13 7 5 <5 8 < 5 <br /> SOLIDS TOTAL-DISS MG/L 390 260 300 350 <br />ANIONS CHLORIDE NOT APPLICABLE MG/L 5 2 3 4 <br />SECONDARY IRON DISSOLVED UG/L < 101 1 40 10 22 <br /> MANGANESE DISSOLVED UG/L 141 1 <5 <5 8 <br />G:\Envvonmental\EMPIRE\AHR\2008\Tables2008\7NA,WF-1&22007.xls TABLE 29