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duplicate). The duplicate sample value for total suspended solids was 160% of the original value (5 mgA-original vs. 8 mgA- <br />duplicate). <br />VII. SPRING AND SEEP SURVEY <br />A survey was conducted May 7-] 4, 1998, to locate springs and seeps which may exist at [he base of the ridge along <br />Trout Creek from the northern Moffat boundary to the base of West Ridge. A total of 11 springs and IS seeps were located <br />as a result of the survey. Appendix C contains a listing of the springs and seeps observed during 1998 and in previous years. <br />Ten of the 15 springs exhibited sufficient dischazge for flow to be estimated or calculated and field parameters <br />measured during the 2005 monitoring period. Five of the 15 seeps also exhibited sufficient discharge For flow to be <br />estimated and field parameters measured. Flow estimates and field parameters for these springs and seeps are provided in <br />Appendix C. Several of the springs and seeps were sampled as single units due to their close proximity to each other and <br />their apparent common origin. Springs SPR-1, SPR-3, SPR-5 and SPR-11 had sufficient flow, singularly or in combination <br />with other springs or seeps, to require additional laboratory water quality sampling in accordance with the mine's permit. <br />Results of these analyses are provided in Appendix C. <br />VIII. MOFFAT STABILITY MONITORING WELLS <br />Six wells were installed in [he Moffat area to monitor ground water levels. A complete discussion of the purpose of <br />the wells is provided in Section 4.6.9 of the permit document. Elevations of the water in the Moffat wells are shown in <br />Figure 36 with the data provided in Appendix D. The 215 and 218 series wells have generally been dry since 1990 while [he <br />892 well series have been dry since their installation. The stratigraphy into which these wells were completed is believed to <br />have been intersected during the construction of the Moffat sediment pond during the fall of 1989. Consequently, these <br />formations have been able [o drain fairly freely. Due to the draining nature of the formations, it is not anticipated that <br />significant po[entiometric surfaces will develop in the future. <br />During 1998, all of these wells marginally responded to the wet spring conditions. A review of [he data appears to <br />confirm the continued integrity of the aquiclude between the Wadge seam and Lower Wadge unit and the ]ack of pore water <br />pressure development in the lower unit. In June 1999, the casings of wells 8925 and 892E degraded sufficiently to preclude <br />measurements below 7,165 feet. The 2005 monitoring period exhibited water elevations consistent with historical data a[ all <br />Moffat stability monitoring wells. <br />47 <br />