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<br /> <br />MINREC, INC., RED CANYON MINE <br />1990 ANNUAL HYDROLOGIC REPORT <br />HYDROLOGIC YEAR 10/89 - 9/90 <br />The reclamation of the <br />during 1988. Sedimentation <br />with a sediment pond and th <br />for a small area exemption. <br />during the year. No run-off <br />during the year. <br />Red Canyon mine site was performed <br />control for the site is accomplished <br />use of alternate sediment control <br />Both systems worked effectively <br />water was discharged from the site <br />This year's report is formatted the same as the 1987, 1988 <br />and 1989 reports. Monitoring values are compared with the <br />average of previous values for the same month which generally in- <br />clude monitoring results from 1981 through 1989. The averages <br />shown in this report are slightly different from prior years <br />reports because the 1989 values are included in the averages. <br />As a result of a technical revision approved September 5, <br />1989, required hydrologic monitoring of the area around the mine <br />• site has been reduced. Current monitoring requirements are shown <br />on pages 144 and 144a of the Permit. The location of the <br />monitoring sites is shown on Map 2.05.613)-1 The new monitoring <br />program went into effect this water year. <br />SURFACE WATER <br />Table S-90 shows the surface water monitoring results for <br />this water year compared to the averages of previous monitoring <br />results for the same month. <br />According to the local irrigation office, 1990 was a below <br />average year for run-off. It was about the same as the 1989 water <br />year. Unless the mountains receive above average snowfall this <br />winter, 1991 will be a very dry year. <br />Spot flow readings taken in May will vary because of the <br />timing and intensity of snow melt. The May flows in Ward Creek <br />was substantially lower than prior years averages. In fact there <br />was not really a spring run-off this year nor was there a spring <br />run-off in 1988 or 1989. <br />The late season flow in the creeks is augmented by reservoir <br />discharge. The September flow in Ward Creek was low but about <br />• what would be expected for a dry year and the flow was relatively <br />close to its historic average. <br />