2013-02-01_REPORT - C1980001 (4)

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I 3.0 SPRING AND SEEP SURVEY A spring and seep survey is performed annually in May, or as soon as practical after snowmelt, covering the base of reclaimed areas along Trout Creek. Flow is measured from springs or seeps that exceeds approximately 20 gpm is measured while flow from smaller expressions is visually estimated. Additionally, a sample is taken annually from springs and seeps exhibiting flows in excess of 20 gpm. The complete list of parameters used for surface water monitoring sites, except for TSS, is analyzed to characterize flow quality. A survey was conducted April 18 and 20, 2012 to evaluate springs and seeps (Plate 2). Survey locations were at the base of the ridge along Trout Creek, from the northern Moffat boundary to the base of West Ridge. Fifteen spring locations were surveyed. Of these 15 spring locations, six were either damp or exhibited flowing water during the 2012 survey. Twenty -one seep locations were surveyed. Of these 21 seep locations, three were either damp or exhibited flowing water during the 2012 survey (Table 1). Four of the six springs, either damp or flowing, exhibited sufficient discharge for flow to be estimated or calculated, and field parameters measured during the 2012 monitoring period. Two of the three seeps either damp or flowing, exhibited sufficient discharge for flow to be estimated or calculated, and field parameters measured during the 2012 monitoring period. Several of the springs and seeps were sampled as single units due to their close proximity to each other and their apparent common origin (Table 2). Springs SPR -1, SPR -3, SPR -5 and SPR -11 and seep SE -23 had sufficient flow, singularly or in combination with other springs or seeps, to require additional laboratory water quality sampling in accordance with permit requirements (Table 3). Idik"' V V V V CENGINEERING Page 3