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SAID <br />8600 <br />I <br />�j 8500 <br />8400 -f <br />0 <br />100 200 300 4D0 500 600 <br />DISTANCE — FEET <br />MATERIAL. PROPERM <br />MATERIAL <br />TYPE <br />WTiRtAL <br />DESCPJPT04 <br />UWT Vr (Pat) <br />SMEAR STRENGTH <br />amowl <br />aa1 <br />8 <br />a9 <br />C <br />P" <br />UNSATURATED TAILINGS <br />105 <br />1 120 <br />30 <br />300 <br />1.22 <br />SATURATED TAAJN05• <br />105 <br />120 <br />16 <br />300 <br />EUBMMA NT FILL <br />125 <br />1 135 <br />35 <br />0 <br />FM"T10N SOIL <br />125 <br />135 <br />35 <br />0 <br />8700 <br />8600 <br />4D ZZ <br />/ 8500 Zj <br />8400 <br />700 800 900 <br />STAMM ANALYSIS SLIUUARY <br />FPAMRE <br />1YPE <br />STATIC <br />Fos <br />PSEUMTATIC <br />f05• <br />YIRD ACC.{}„ <br />(7I 9) <br />2.87 <br />1.31 <br />W <br />NA <br />NA <br />T t62 <br />2.76 <br />1.22 <br />15.2 <br />4 <br />2.87 <br />1.12 <br />10.6 <br />6.9 <br />1.95 <br />11.1 <br />•11C.D A?Q1lRATCN AMIATSO A•Gt! W IM <br />FCQWWn2 A MV— "sc2rc CO[RQ[M' a 017y <br />Nq <br />4T6 •.T V"V4. " sm^' 2 IAA IM - 110i NMPLKAKI TO TIO /AI l.91 <br />(Reproduced from SRK, 1995) <br />Figure 5 Results of Downstream Stability Analyses <br />3.1.3 Monitoring Data <br />Monthly monitoring reports were reviewed for available data on the embankment standpipe <br />piezometers. Data indicate the piezometers are dry or have a slight amount of water in the <br />bottom of the casing that could be related to condensation or trapped water in the end cap of the <br />casing. Monitoring data indicate there is no reason to believe there is an elevated phreatic <br />surface above the liner along the axis of the main dam. This would indicate the drain layer <br />above the liner is functioning as intended. As described later, the pipe outlets of the underdrain <br />system had become temporarily blocked by surface sloughing and erosion sediment deposition at <br />the toe of the dam, but the piezometers do not indicate this has resulted in an elevated phreatic <br />surface at the location of the piezometers. The blocked outfalls were cleared (exposed) before <br />the May 13, 2013 inspection. <br />3.2 VISUAL ASSESSMENT OF DAM STABILITY <br />The findings of issues identified in the two 2013 site visits and the ISI are summarized in the <br />following sections. <br />San Luis Project Miller Geotechnical Consultants <br />Tailing Dam Data Report 10 February 2014 <br />