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March, 1997 Monthly/1st Quarter Report <br /> Page 5 <br /> Evaluation of the normalized data: <br /> The index value of 1 .90 for March indicates this result was <br /> significantly higher than the mean value for the reference data for <br /> the low flow class. Since this result is less than +2 it does not <br /> require further evaluation or additional sampling. Based on Bureau <br /> of Reclamation sample results for March 51 19970, dissolved zinc <br /> concentrations at A-68 was 1300 ug/l, M-34 was 640 ug/l and C-48 <br /> was 880 ug/l . These results would indicate that all three sub- <br /> basins were carrying elevated zinc concentrations on March 5, 1997. <br /> It appears that zinc concentrations in these sub-basins were <br /> elevated (based on Sunnyside's data from August 1996 - February <br /> 1997) by the following percentages; Cement Creek 20%, Mineral Creek <br /> 50% and Upper Animas 100%. <br /> Please contact me if you have any questions on this report. <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 <br /> inquiry of those individuals <br /> immediately responsible for Larry Perino <br /> obtaining the information, I Reclamation Manager <br /> believe the submitted information <br /> if 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 />