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MONITORING - Water Quality <br /> Attached 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. Copies of old data was not <br /> included. <br /> MONITORING - Discussion of Water Quality Monitoring Results <br /> 1) Mayflower Millsite area <br /> The Animas River monitoring results, required by Sunnyside' s <br /> MLR monitoring plan, continue to exhibit increased zinc and <br /> manganese concentrations between upstream and downstream <br /> monitoring points although the differential for zinc appears <br /> to have been reduced as a result of the completed diversions <br /> and reclamation projects . <br /> At the request of EPA, CDPHE and BLM, Sunnyside voluntarily <br /> implemented a study to determine what impact, if any, the <br /> Mayflower Area tailings ponds have on water quality in the <br /> segment of the Animas River between Arrastra Creek and the 14th <br /> Street bridge in Silverton (A-68) . The MLR monitoring points <br /> are within this segment. <br /> The study included; close spaced in-stream water quality <br /> samples as well as sampling of visible inflow along the <br /> segment during high-flow and low-flow; airborne geophysical <br /> survey to find potential areas of higher conductivity, in- <br /> stream sediment and pore water sampling and the drilling of <br /> holes through the tailings ponds to bedrock to find <br /> groundwater level and characterize the tailings and underlying <br /> material . Most of these holes were constructed as and <br /> 7 <br />