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2013 AHR Page 7 <br />33 <br />244 <br />244 <br />244 <br />34 <br />24.3 <br />18.8 <br />16.6 <br />Totals (gpm) <br />318.7 <br />301.3 <br />305.0 <br />Monitoring Location Description: <br />03 - No. 1 South Mains near No. 1 East Mains - flow from 2nd West Panel Seals <br />33 - 4 South Mains at Rapid Creek Mains, inflow from floor and ribs in 4 South Mains <br />34 - 2 South Mains Seals below 5 East Mains includes flow from former locations 24, 25 and 27- <br />31. <br />All of the mine inflows flow down dip to the mined out workings at the north end of the mine. <br />This large mined out area is referred to in the permit as the northwest intake pool. An angled <br />hole was drilled into the northwest intake pool so water can flow by gravity from the mine. An <br />eight -inch diameter pipe was installed in the angled hole. Discharge from the northwest intake <br />pool averaged 279 gpm during the 2013 water year. This discharge rate compares favorably <br />with the preceding mine inflow estimates. <br />A close inspection of the mine workings show that no secondary mining occurred under Rapid <br />Creek or Cottonwood Creek except for the 3rd East Panel which was mined out in August 1982. <br />This mining apparently did not affect Rapid Creek since there are no mine inflows associated <br />with the panel. <br />Consumptive Use <br />Consumptive use during the year was for dust suppression and culvert maintenance. No <br />records of this minor amount of consumptive use are available. <br />Impacts <br />The average total dissolved solids for the mine discharges calculated with total flow for the Year <br />yields the tons of TDS discharged for the year. Outfall 016 discharged a total of 736 tons of <br />TDS to the river during the Year. <br />The 2013 TDS discharge represents 0.06% of the 1.18 million tons calculated to be carried by <br />the River. At the Roadside South Portal, water is expected to perpetually discharge through <br />outfall 016. <br />There was no detectable effect of mining on flows in Cottonwood and Rapid Creeks. Mining <br />ceased at the Roadside Portals on December 2, 1999. No further mining from either portal is <br />anticipated in the foreseeable future. <br />Consumptive use will be insignificant in the future because mining and washing of coal has <br />ceased. Consumptive use will be for seeding and dust control during reclamation operations. <br />