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<br /> <br />Mr. Larry M. Reschke - 4 - September 5, 1985 <br />for the elevated water level and increased specific conductivities <br />at sediment pond piezometer P-l, as noted in the ground water <br />section. <br />Sample point SP-D is in the permit area on the Carbon Ditch. The <br />ditch, which is located parallel to 2075 Road, flows substantially <br />more water than the Red Canyon Ditch. The water in the ditch is of <br />much better quality than that at SP-C. The quality of the Carbon <br />Ditch water appears to mirror that of local streams, being somewhat <br />elevated in sulfate. <br />The Nelson Ditch is monitored monthly for field parameters. This <br />water is high in conductance for surface flow. Its pH varies from <br />7.4 to 8.3. The flow in this ditch was measured in February of 1983 <br />at 150 gal/min. <br />Five springs are to be monitored near the mine site. Monitoring of <br />Spring No. 2 will be discontinued due to dilution from Williams <br />Creek and irrigation return flows. No field parameters were <br />reported for No. 2 and discharges have been reported as "normal". <br />Spring No. 1, southwest of the mine, has a fairly constant yearly <br />discharge of 23 to 33 gal/min. The conductivity (673) and low <br />temperature (9°C) indicate that this spring may be bedrock <br />controlled. <br />Spring No. 3 varied in discharge from 6.7 gal/min in August, to <br />3.5 gal/min in mid-February. Likewise, Spring No. 4 shows a <br />seasonal variation. This spring discharged a maximum of 30 gal/min <br />in August, and dropped to 1.1 gal/min by mid-April. The seasonal <br />change in discharge is indicative of a short, alluvial/colluvial <br />flow system. Conductivity values (400 to 600)) tend to substantiate <br />this. <br />Monitoring results at Spring No. 5, measured twice, are difficult to <br />interpret. Its high conductance (4,700) and low temperature (5oC) <br />indicate a deep source. The flow from this spring, however, dropped <br />from 15 gal/min to zero, between April and May of 1984. This spring <br />should be indent ified on the Hydrology Map. A discussion by the <br />permittee may be in order here. Continued monthly monitoring is <br />imperative. <br />Average flows from ten (10) underground monitoring points have been <br />calculated by the permittee. The monitoring points located to the <br />north and east (UG-1, 5(u), 6) made the most water during the year. <br />Generally, conductance and pH were what would be expected of normal <br />Mesaverde water. <br />