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1995 Annual Hydrologic Report <br />• Page 8 <br />days per week were used. Usage on the surface roads was approximately 12,000 gallons <br />of water per day, 6 days per week, 75% of the year. Water for the surface roads was <br />taken from an approved point of diversion in the Highline canal. <br />A summary of the estimated consumptive use of water is as follows: <br /> Total Gallons/ Gallons/ <br />Source Gallons raw ton clean ton <br />Domestic <br />Surface Facilities 1,364,000 1.9 2.7 <br />Preparation Plant 4,849,000 6.8 9.7 <br />Mine <br />Mining 5,050,000 7.1 10.1 <br />Preparation Plant 3,851,000 5.4 7.7 <br />Underground Roads 1,123,000 1.6 2.2 <br />Highline Canal <br />Surface Roads 2,808.000 3_9 5.6 <br />• <br />TOTAL 19,045,000 26.6 38.0 <br />Impacts <br />The total dissolved solids for the mine discharges calculated with monthly TDS and <br />monthly flow for the year come out to be 34.9 tons for 001, 851.9 tons for 002 and <br />306.8 tons for 004. This total of 1193 tons represent a 23% decrease over the 1994 <br />TDS discharge and a 33% decrease over the 1993 discharge. The corresponding flow <br />discharge for 1995 were 13% below the 1994 discharge and 2% above the 1993 <br />discharge. The 1995 TDS discharge represent .066% of the 1.810 million tons <br />calculated to be carried by the River. Again for 1996 the discharge of TDS is expected <br />to decrease slightly from the Roadside South Portal and increase slightly from the <br />Roadside North Portal. Long term discharge from the Roadside North will cease upon <br />completion of mining. At the Roadside South, water is expected to continue to discharge <br />from 002 beyond closure and flow is expected to increase by the amount previously <br />discharged from outfa11001 and the amount previously used for mining and processing. <br />• There was no detectable effect of mining on flows in Cottonwood and Rapid Creeks. <br />Mining projections in the Roadside South have changed to mining east toward Rapid <br />