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• 4.8.7 Springs <br />Permit map M52 presents the location of springs located at Trapper Mine. A detailed survey of spring <br />locations within and adjacent to Trapper Mine was initiated in 1997. The goal of the ongoing survey is to <br />inventory locations, establish histories, and obtain data from springs within the area. Appendix Q, <br />Section XXXI outlines sampling procedures and schedule to be followed. <br />There are two types of springs at Trapper. Naturally-occurring springs are those in existence before <br />mining or occurring away from areas of mining activity. Spoil springs are those that occur within or <br />adjacent to the mined area and are probably a result of mining activities. The water emanating from a <br />spoil spring has passed through the mine backfill in a reclaimed pit. Spring data is presented in Annual <br />Hydrology Reports to the Division each year. <br />Map M52 shows the location of currently monitored spoil springs and natural springs. The major natural <br />springs at Trapper Mine are the Coyote Spring, East Pyeatt Spring, and the Fox Den Spring. <br />Historical natural springs that were previously monitored and for which significant historical data exist are <br />the West Buzzard Spring, the Cottonwood and Wapiti Springs complex, Spring 99-2 and. Spring 99-3. <br />Monitoring terminated for the West Buzzard Spring and the Cottonwood and Wapiti Springs complex <br />when they were included in SL-7 and SL-5 Phase III bond release approvals, respectively. Springs 99-2 <br />• and 99-3 were disturbed by mining activities in the fall of 2000. <br />Prior to 1999, Flume Gulch springs information was collected at surface water site S-1 and was <br />representative of spring water quality as measured at this location from this drainage during base flow <br />conditions. In 1999, discrete spring sources, identified as springs 99.2 and 99-3, were identified in this <br />drainage and monitored in addition to the Flume Gulch springs composite sampling conducted at surface <br />water monitoring site S-1. The base flow measurements at surface site S-1 show that the maximum <br />TDS observed in the Flume Gulch groundwater as monitored at this location through 1999 was <br />approximately 2200 mgA. <br />Significant additional information from a naturally occurring spring has been produced for the East Pyeatt <br />Spring from the NPDES site 011 surface monitoring site during base flow conditions. The maximum <br />TDS measured in the East Pyeatt Spring since mining has occurred in this area has been approximately <br />2950 mg/I. Table B-2 of the Trapper Annual Report shows that the Coyote Spring maximum TDS has <br />been approximately 2000 mg/I. Historical monitoring of the S-3 surface water site (Pyeatt Gulch <br />approximately one-quarter mile downstream (north) of Trapper's permit boundary) during base flow <br />conditions shows that the monitored TDS at this location has been slightly less than 2600 mgA. <br />11 <br />4-248a Revisiom P? <br />Approvea: -- -'? l Zf (01