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Mountain Coa! Company 2000 Annual H}'drologV Report Wert 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 aze <br />located directly over panels to be mined, and within the angle-of--draw per the agreement letter in <br />Exhibit 19C ofthe permit. These resources aze listed in Table 3. <br />Sampling Methods <br />Monitoring included spring flow, field parameters, and laboratory parameters. 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 determine 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 pazameters <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 Wl'00 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 1tPE-7 was monitored to establish baseline conditions during <br />WY00; all other wells were monitoring as part of the regular program. <br />Field water quality samples were taken three times during the water year at all stations if sufTicient <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 similazly sampled and the samples <br />were analyzed for a full suite of parameters (Table 4), when conditions allowed. <br />• <br />831-03?.550 Page 8 {Vrrgh! Water Engineer[ <br />