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1995 Annual Hydrologic Report <br />Page 2 <br />on data pages SQ-11 ~ 12. The low flow for the year was recorded as 1200 CFS on <br />February 17, 1995. As can be seen on data page SQ-12, the conductivity recorded this <br />day was 1190 umhos/cm. This flow and conductivity equates to approximately 2253 <br />tons of Total Dissolved Solids, TDS, being carried past the mine that day. Mine <br />discharges on February 15, 1995, were: 001 - 0 GPM; 002 - 276 GPM @ 1364 mil <br />TDS; and 004 - 136 GPM @ 1078 mg/1 TDS, resulting in approximately 3.13 tons of <br />TDS being discharge. Comparing the calculated TDS load in the River at low flow and <br />the mine discharge near the same date, the maximum increase in the River's TDS as a <br />result of mine discharge would have been 0.14%. <br />This Year's mean daily flow values for the Cottonwood and Rapid Creelc flumes are <br />included on data pages SG19, SH-19, SI-19 and SI<-5 and are presented graphically on <br />data pages SG20, SH-2Q, SI-20 and SI<-6. As usual, the flow in these Creeks is largely <br />controlled by the City of Palisade, depending upon their need for domestic water. Also, <br />irrigation water is diverted from the creeks by private water right holders at various <br />locations. Table 595-1 was prepared to show the average monthly flows during the <br />primary irrigation season when low flow in the creeks is critical. The 0.000's shown on <br />• data pages indicate times when the flow was below the minimum recording level of the <br />recorder. <br />'T'here was no discharge from our CDPS discharge points 005 thru 014 during the year. <br />These outfalls cover sediment pond discharges. Dischazge point 015 is permitted to <br />allow pumping water from the south end of the Roadside South Portal out the 2 West <br />portals, Piping to this point has not been installed yet and as a result there was no <br />discharge from this point during the Year. <br />Discharge point 001 is used as an overflow to a mine water system for the preparation <br />plant. The source of the water is primarily location 3 (see the Mine Water section of <br />this report) in the Roadside South but can include flow from location 5. Flow from this <br />site is not directly related to inflows and is discussed in more detail in the Mine Water <br />section of this report. As with other winters, in order to avoid freezing problems only <br />enough water to supply the prepazation plant was pumped from the mine. Data pages <br />SD-9 and 10 show the results of weekly monitoring on this point. These pages show a <br />second meter during a portion of the summer. When the river is extremely high, which <br />it was in the summer of 1995, the river is higher than the conveyor tube under the <br />highway and causes seepage into the tube. Approximately 2.9 million gallons of water <br />was dischaged as a result of inflows from the river. The 1994 and 1995 full suite results <br />• are shown on data page SN-3 (The 1994 results are being resubmitted due to ug/1 <br />information being input as mg/1 for some of the metals). Table 595-2 has been <br />