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The permeability rate of Tatting Pond Number 4 - slimes component twh~are the <br />sludge will be disposed) is assumed to be similar to that of Tailing {>ond <br />Number 3 - slimes, i.e, approximately 1x10 -5 cm,/sec.. Information ~~ou <br />provided over the phone indicated that the permeability rate of Tailing Pond <br />Number 4 interlocking sands and slime component is approximately <br />1.8x10-5cm.Jsec.; the slimes component is expected to be even less permeable <br />than the sands/slime interface. <br />As Tailing Pond Number 4 is the monitoring point for the Mill NPDES Discharge <br />permit, any impacts of disposing the American Tunnel sludge atop Tailing Pond <br />Number 4 can be monitored, <br />As discussed, Sunnyside Gold Corporation wilt analyse Tailing Pond Numiier 3 - <br />slimes, Tailing Pond Number 4 - slimes and the American Tunnel Sludge <br />requiring disposal for acid-base potential, Additionally, Tailing Poncl Number <br />4 and the American Tunnel Sludge requiring removal will be analyzed for the <br />full suite of metals as presented in Table D-10 of the Consolidated permit. <br />The Division recommends that Sunnyside Gold Corporation devise alternate <br />disposal plans and sites or both the American and Terry Tunnels sludge. <br />Please contact me if I can be of further assistance. <br />Sincerely, <br />~~~ ~ U~.~ <br />Camille M Farrell <br />Reclamation Specialist <br />