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REP49365
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REP49365
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Entry Properties
Last modified
8/25/2016 12:53:16 AM
Creation date
11/27/2007 12:33:10 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Report
Doc Date
5/29/2002
Doc Name
2000 AHR Report Page 74 Through 171
From
Oxbow Mining Inc
To
DMG
Annual Report Year
2000
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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1 <br />' 6.1 Surface Water Information <br />' The data collected from Oxbow Mining, Inc.'s (OMI) surface water monitoring stations, along <br />with the results of laboratory analyses are presented in Section 3. Minimum and maximum <br />' measurements for the baseline yeaz(s) of each resource maybe referenced in OMI's 1998 Annual <br />Hydrology Report. <br />' Surface water monitoring point H-1 is located on Hubbard Creek, where this perennial stream <br />flows through the western edge of OMI's permit azea associated with the abandoned Somerset <br />Mine. The most recent surface activity in the azea was the reclamation of the lower Hubbard <br />' Creek site in 1996. Hubbazd Creek point H-1 was monitored in April, June, August, and October <br />2000 for field parameters. In April and October, the full suite of surface water quality <br />pazameters was analyzed. No significant difference in the 2000 monitoring results from baseline <br />' or historical measurements was noted. <br />Surface water monitoring points S-1 (Sanbom Creek upstream) and S-2 (Sanbom Creek <br />' downstream) were designed to sample the flow in Sanbom Creek above and below the disturbed <br />azea of the Sanborn Creek Mine site. Sanborn Creek also receives dischazge water from the <br />mine, consisting primarily of natural mine water inflows and some runoff of imported (from <br />North Fork intake) water from the mining sections. This mine water dischazge causes Sanborn <br />Creek to flow for a distance of approximately 300 feet through culverts under the railroad and <br />highway prior to discharging into the North Fork of the Gunnison River. <br />' Sanborn Creek at monitoring point S-I flows during spring runoff and significant precipitation <br />events. The disturbed mine site azea and mine water could affect the quality of water in Sanbom <br />' Creek at Point S-1 only when there is flow at S-I. For this reason, S-2 is monitored only if S-1 <br />has flow. <br />' S-1 was monitored in March, April and May of 2000, when flowing during spring run-off. Since <br />S-1 had flow, S-2 was also monitored in March, April and May of 2000. The quarterly full suite <br />' of surface water quality pazameters is scheduled at these sites for March, June, September, and <br />December. The full suite analysis of surface water quality pazameters was completed on samples <br />from Points S-1 and S-2 in Mazch. There was no flow for quarterly sampling in June, <br />' September, and December. No significant difference in the 2000 monitoring results from <br />baseline or historical measurements was noted. <br />' P-1 (Portal Drop Inlet) was monitored monthly, with no flow recorded in any month. Since P-1 <br />was dry during the monthly monitoring inspections, there were no samples obtained for analysis <br />of settleable solids. <br />' Surface water monitoring points U-1 (Unnamed Drainage) and C-1 (Coal Gulch) are monitored <br />to verify that underground mining in Sanborn Creek Mine does not have an adverse affect on the <br />' quality ofrun-off in the Unnamed Drainage or Coal Gulch, which aze both ephemeral streams. <br />U-1 was monitored monthly, with no flow recorded in any month. C-1 was monitored monthly <br />with flow recorded in March, April and May of 2000. A full suite analysis of surface water <br />1 <br />' 165 <br />
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