Laserfiche WebLink
cut above Old Highway 133. This was monitored and an elevated conductivity and <br />temperature was measured. Flow was recorded in June and July of 1994, but the conductivity <br />and temperature measurements decreased. <br />Water damage to the pavement of Old Highway 133 had occurred next to the re- <br />emergence of Spring 11, and between the July and August monitoring events of 1994, the <br />Colorado Department of Transportation performed maintenance of the roadway and ditch in <br />the area of Springs ] 0 & 11. Both Springs 10 and 11 were dry at the time of the August <br />monitoring, with re-emergence of Spring 10 by October and Spring 11 by December of 1994. <br />During 1996, Springs 8, 10, and 11 continued to deposit material onto the road <br />surface of the old highway. The Colorado Department of Transportation continues to remove <br />material from the roadway and ditches in these areas, leading to considerable variability in the <br />monitoring measurements. Roadway maintenance impacts to Springs 8, 10, and 11 by the <br />Colorado Depaztment of Transportation are beyond the control of Oxbow Cazbon & <br />Minerals, Inc. <br />Precipitation or snowmelt water infiltrates and percolates downward until the water <br />encounters a coazse zone or aquiclude which causes the water to surface as a spring. The <br />primary use of the springs is by wildlife. The only spring to consistently contribute to surface <br />flow into the North Fork of the Gunnison is Spring 8. All other spring surface flow, if any, <br />returns to the ground before reaching the North Fork of the Gunnison. <br />Surface water monitoring stations AG-1 ("A" Gulch), BG-1 ("B" Gulch), CG-1 ("C" <br />Gulch), HN-1 (Hawksnest Creek), HG-1 (Hoopla Gulch), and BC-1 (Bazdine Canyon), are <br />designed to monitor flow characteristics in the respective creeks and gulches. These surface <br />water monitoring points are designed to verify that the underground mine does not have an <br />adverse effect on the quality or quantity of run-off from these ephemeral drainage's that <br />seldom have flow. Monitoring results collected during 1992 and 1993 will be the baseline <br />information with which future monitoring results will be compared. These stations were <br />monitored monthly. No flow was recorded for the stations except for HN-1 Hawksnest <br />Creek, which had flow in April and May. The monthly field parameters were measured each <br />month, and the quarterly full suite of surface water parameters was not analyzed, because <br />there was no flow. <br />Surface water monitoring station TC-1 (Thompson Creek) has been changed to T-1 <br />(Thompson Creek). The reason for this change is due to the addition of two groundwater <br />wells located next to Thompson Creek. The name of the wells on the well permit aze TC-1 <br />and TC-2. The monitoring point for Thompson Creek well remain the same, just the name of <br />the monitoring station well change. Surface water monitoring station T-1 is designed to <br />monitor flow characteristics of the creek. This surface water monitoring point is designed to <br />verify that the underground mine does not have an adverse effect on the quality or quantity of <br />run-off from this intermittent drainage. Monitoring results collected during 1996 will be the <br />baseline information with which future monitoring results will be compared. Flow was <br />recorded in March, April, May, June, November, and December. The monthly field <br />parameters were measured each month, and the quarterly full suite of surface water <br />parameters was analyzed in March, June, and January. T-1 was scheduled for a full suite in <br />