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• 4.8.7 Sorinas Permit map M52 presents the location of springs located at Trapper Mine. A detailed survey of spring locations within and adjacent to Trapper Mine was initiated in 1997. The goal of the ongoing survey is to inventory locations, establish histories, and obtain data from springs within the area. Appendix O, Section XXXI ou9ines sampling procedures and schedule to be followed. There are two types of springs at Trapper. Naturally-occurring springs are those in existence before mining or occurring away from areas of mining activity. Spoil springs are those that occur within or adjacent to the mined area and are probably a result of mining activities. The water emanating from a spoil spring has passed through the mine backfill in a reclaimed pit. Spring data is presented in Annual Hydrology Reports to the Division each year. Map M52 shows the location of the spoil springs and natural springs. The major natural springs that exist at Trapper Mine are the West Buzzard Spring, Coyote Spring, East Pyeatt Spring, Cottonwood and Wapiti Spring, Fox Den Spring, Spring 99-2, and Spring 99-3. The Cottonwood and Wapiti Springs are natural springs that are derived from the shallow groundwater in this area. The Cottonwood/Wapiti Spring site is undisturbed by mining activities. The Cottonwood and Wapiti Springs are in close proximity to each other and are likely fed by the same source. The Cottonwood Spring is "developed' with a spring can and piped outlet installed. The Wapiti Spring measurements were typically taken from waters emanating from the • same general site but bypassing the spring can. During 1998, higher water levels at the site completely inundated the Cottonwood Spring developed site thus forcing the Cottonwood and Wapiti sites to be lumped together for monitoring purposes. Coyote Spring, East Pyeatt Spring, Fox Den Spring, Spring 99-2 and Spring 99-3 have produced the majority of the information on naturally occurring springs at the Trapper site. Prior to 1999, Flume Gulch springs information was collected at surface water site S-1 and was representative of spring water quality as measured at this location from this drainage during base flow conditions. In 1999, discrete spring sources, identified as springs 99-2 and 99-3, were identified in this drainage and will continue to be monitored in the future in addition to the Flume Gulch springs composite sampling conducted at surface water monitoring site S-1. The base flow measurements at surface site S- 1 show that the maximum TDS observed in the Flume Gulch groundwater as monitored at this location through 1999 was approximately 2200 mg/I. Signficant additional information from a naturally occurring spring has been produced for the East Pyeatt Spring from the NPDES site 011 surface monitoring site during base flow conditions. The maximum TDS measured in the East Pyeatt Spring since mining has occurred in this area has been approximately 2750 mgll. Table B-2 of the Trapper Annual Report shows that the Coyote Spring maximum TDS has been approximately 2000 mg/I. Historical monitoring of the S-3 surface water site (Pyeatt Gulch approximately one-quarter mile downstream (north) of Trapper's permit boundary) during base flow conditions shows • that the monitored TDS at this location has been slightly less than 2600 mg/I. The main springs from the spoil aquifers currently observed at Trapper Mine are the Johnson Gulch and the No Name Springs. Other spoil springs include the A Slide Spring and A Slide Drain. Limited data has