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April 2007 - March 2008 <br />Page 4 <br />MONITORING - Water Quality <br />Included in Appendix A is water quality data for; <br />1) Mayflower Millsite area <br />a) Animas River above (AR3.5) and below (AR4) complex. <br />2) American Tunnel area <br />a) Cement Creek above (CC1) and below (CC2) complex. <br />b) Springs in the area of the now reclaimed waste dump <br />(ATS1, ATS2). These springs no longer flow from their <br />original sites because of the waste dump reclamation and <br />are no longer sampled. <br />3) Eureka Creek between Sunnyside Basin and the Terry Tunnel <br />(EC1). <br />MONITORING - Discussion of Water Quality Monitoring Results <br />• 1) Mayflower Millsite area <br />The Animas River monitoring results continue to exhibit <br />increased zinc and manganese concentrations between <br />upstream and downstream monitoring points although the <br />differential for zinc appears to have been reduced as a result <br />of the completed diversions and reclamation projects. <br />2) American Tunnel area <br />Cement Creek monitoring shows concentrations are similar <br />between the points with some elevation between the upstream <br />and downstream points. <br />The seep ATS2, originally from the toe of the American Tunnel <br />waste dump, has either relocated or dried up. The seep ATS1 <br />appears to have disappeared or relocated due to the <br />reclamation of the waste dump. <br />3) Terry Tunnel/Lake Emma <br />Eureka Creek monitoring above the Terry Tunnel continues to <br />show the same level of concentrations, compared to previous <br />years. <br />C7