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MOMIfiORI#d - 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) Permit Area near the American Tunnel <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 is not <br /> included. <br /> MONYTOlMid - 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 was <br /> relatively small in 2016. This may be the result of the <br /> completed diversions and reclamation projects . <br /> At the request of EPA, CDPHE and BLM, Sunnyside voluntarily <br /> implemented a study to assess 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 the following: continuation of the close <br /> spaced in-stream water quality samples as well as sampling of <br /> visible inflow along the segment during high-flow and low- <br /> flow; in-stream sediment and pore water sampling and the <br /> monitoring of the groundwater levels and water quality beneath <br /> the tailings ponds . Nine of these monitoring wells are within <br /> Sunnyside' s MLR permit area on Tailings Pond 4 (refer to map) . <br /> 5 <br />