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Biological Assessment <br /> Federal Coal Lease Modification(COC-62920)and Federal Mine Permit(CO-0106A)Revision and Renewal <br /> over 100 years since the railroad began operations in 1882. The amount represents <br /> 0.0005 percent of that emitted by the FCPP between 2000 and 2011. Accordingly, mercury <br /> emissions from the DSNGRR represent a very small contribution to the water quality <br /> environmental baseline of the San Juan River. The continued release of this quantity of mercury <br /> into the upper reaches of San Juan River Basin are not expected to represent a measurable <br /> contributing pollutant to the basin and downstream water quality. <br /> Therefore, the determination of effect for the Proposed Action on both species is may affect, not <br /> likely to adversely affect. <br /> July 2017 <br /> 34 <br />