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July 1997 Monthly Report <br /> Page 5 <br /> The index number graph and updated reporting table are attached. <br /> Evaluation of the normalized data: <br /> The index value of -0. 60 for July indicates this result was <br /> lower than the mean of the reference data set for the high <br /> flow class. This result is an improvement from June and a <br /> significant improvement from the index numbers for December, <br /> 1996 through May, 1997 . Additional evaluation or monitoring <br /> is not planned since the index number for July compares <br /> favorably with the reference data set. <br /> A 12 period moving average graph is attached. The calculated <br /> moving average value for July was 0.993 which is slightly less <br /> than the moving average for June (1. 000) . As expected, the 12 <br /> month average result is more than +0. 577 and will be until <br /> April or May 1998 even with good monthly index values through <br /> this period. The trend will be more important for the next <br /> few months and for July this trend was positive (down) . <br /> If you have any questions on this report please contact me. <br /> I certify under penalty of law <br /> that I have personally examined Sincerely, <br /> and am familiar with the information <br /> submitted herein: and based on my - 41 <br /> inquiry of those individuals <br /> immediately responsible for Larry Perino <br /> obtaining the information, I Reclamation Manager <br /> believe the submitted information <br /> is true, accurate and complete. <br /> I am aware that there are significant <br /> penalties for submitting false <br /> information, including the possibility <br /> of fine and imprisonment. See 15 U.S.C. <br /> Section 1001 and 33 U.S. C. Section 1319 <br /> cc: EPA - Melanie Pallman <br /> Technical Enforcement Program 8ENS-T <br /> DMG - Wally Erickson <br /> Allen Sorenson <br />