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REP11098
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REP11098
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Last modified
8/24/2016 11:42:29 PM
Creation date
11/27/2007 12:34:55 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Report
Doc Date
3/24/1994
Doc Name
1993 AHR
Annual Report Year
1993
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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' Somerset Mining Company <br />1993 AHR <br />t Page 3 <br />included to present flow, conductivity, iron, total dissolved <br />' solids and Manganese for Hubbard Creek and the North Fork of the <br />Gunnison River. The graphs for Hubbard Creek compare data from <br />1991 through 1993. The graphs for the North Fork of the Gunnison <br />River compare upstream and downstream results from 1991 through <br />' 1993. <br />Sanborn Creek, the Unnamed Drainage, Coal Gulch, and Hawksnest <br />' Creek all had recorded flows during the spring thaw in March and <br />April. Lower Sanborn Creek also had recorded flows as a result of <br />the mine water discharge. The flow from these drainages was <br />' consistent with prior years monitoring results. The flow in <br />Hubbard Creek and the North Fork of the Gunnison River was <br />monitored as in prior years. <br />t There was no recorded flow at A-Gulch, B-Gulch, C-Gulch, Hoopla <br />Gulch or Bardine Canyon. Bear and Elk Creeks are not monitored. <br />' Springs 1 through 6 were monitored during June, July, August and <br />September. The historical data for the springs is presented in the <br />permit on pages 2.04-29vii through 2.04-29xii. Spring 1 was noted <br />' as dry. Springs 2 through 5 had conductivity measurements that are <br />comparable to the historical data. However, the high pH <br />measurements for the springs taken during 1993 are suspect. <br />1 Spring 6 had a recorded flow of 1 gpm in June 1993. Its <br />conductivity was 360 umhos/cm. The historical data indicates the <br />conductivity for this spring should not exceed 175 umhos/cm. This <br />' lack of correlation indicates a potential problem with spring <br />numbering and location. <br />' Springs 7 through 11 were monitored June through December 1993. <br />The historical data for the springs is presented in the permit on <br />pages 2.04-29 xiii through 2.04-29 xviii. Spring 7 had recorded <br />flow in June 1993. The historical data for Spring 7 indicates it <br />' is typically dry. <br />Spring 8, the flow from the Oliver Mine, had recorded flow during <br />' all of the monitoring events during the year. The monitoring data <br />collected during 1993 compares quite well with the historical data. <br />The conductivity measured during 1993, (1800 to 4900 umhos/cm) is <br />almost the same range contained in the historical data which is <br />1900 to 4000 umhos/cm. The pH measurements taken during 1993 are <br />suspect. The flow measurements taken during 1993 were somewhat <br />less than the historical data. <br />' The monitoring data for both Springs 9 and 10 also compare quite <br />well with the historical data. Both of these springs exhibit high <br />' conductivity (1700 to 4900 umhos/cm), which indicates the water has <br />been in contact with coal and/or shale formations. The historical <br /> <br />
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