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REP45335
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Entry Properties
Last modified
8/25/2016 12:48:00 AM
Creation date
11/27/2007 10:33:50 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Report
Doc Date
12/11/2001
Doc Name
WEST ELK MINE 2000 ANNUAL HYDROLOGY REPORT
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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Mountain Con! Compom~ 2000 Annual Hydrology Report Wecr Elk Mine <br />MCC, in cooperation with the U.S. Forest Service District Office in Paonia, Colorado, has agreed to <br />• informally monitor the U.S. Forest Service surface water resources, as depicted on Map 3, that are <br />located directly over panels to be mined, and within the angle-of--draw per the agreement letter in <br />Exhibit 19C of the permit. These resources aze listed in Table 3. <br />Sampling Methods <br />Monitoring included spring flow, field pazameters, and laboratory pazameters. In sampling springs, <br />a location was selected which approximated a channel as closely as possible. A step may have been <br />cut into the channel base to facilitate positioning of a container. Flow measurements were made by <br />the timed volumetric method: where a field technician times the filling of a container of known <br />volume to deterrnine the flow rate. Several measurements were taken and averaged prior to <br />reporting. Field parameters of temperature, pH, and conductivity were made at the springs by <br />collecting a sample from the flowing springs and measuring the sample for the parameters using <br />standard instruments that were calibrated in the field. Samples for analysis of laboratory parameters <br />per Table 2, Footnote 2 were collected by filling a clean, pre-fixed sample bottle from non-aerated <br />spring flow. Care was taken to minimize any increases in turbidity. Sample bottles were sealed, <br />labeled, placed on ice, and transported to the laboratory for analysis. <br />Groundwater Monitoring <br />There were eighteen wells in the WY00 groundwater monitoring program and are summarized in <br />Table 4 along with the formation each of the wells monitor. Well RPE-7 was added to the <br />. monitoring program to monitor shallow groundwater levels near the refuse pile expansion. Table 5 <br />provides more detail on the completion of each of the wells in the monitoring program. Of the <br />eighteen monitored wells, only well RPE-7 was monitored to establish baseline conditions during <br />Wl'00; all other w ells were monitoring as part of the regulaz program. <br />Field water quality samples were taken three times during the water year at all stations if sufficient <br />volume was present to fill the appropriate sample containers and if the well allowed access to the <br />formation of completion. On an annual basis, all stations were similarly sampled and the samples <br />were analyzed for a full suite of parameters (Table 4), when conditions allowed. <br /> <br />Page 8 It'righr tYorerEngineers <br />
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