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108 <br />The objective of this well is to identify impacts on the alluvium of the Middle <br />Fork of the Purgatoire from the waste pile. <br />PAW -9: A sample from an alluvial well located near PRS -4. The objective of this <br />site is to assess impacts on the Middle Fork of the Purgatoire downstream of Elk <br />facilities area. <br />PAW -9a: A sample from an alluvial well located down gradient of the ventilation <br />shaft proposed with TR -64. The well will be drilled to the depth of <br />bedrock/alluvial interface. This sample site was established to monitor water <br />quality down gradient of the ventilation shaft. <br />MW -1- MW -10: The alluvium the New Shallow monitoring wells located near <br />the site of removed underground storage tanks west of the Industrial Building. <br />These sites are monitored to evaluate the success of remediation work. <br />Spring Sites: Springs in the mine area have been monitored since 1984. With <br />liability release of the underground workings, all of these spring sites lie outside <br />of the current permit boundary. Assessment of spring data through 1998 indicates <br />no effects of mining on these sites and no further monitoring is proposed. Spring <br />19 is located east of the New Elk workings in an unnamed tributary of the <br />Purgatoire. Additional monitoring of this site was required in the CDMG - <br />approval of the Thickener Recycling revision (TR -34). The D 1 vision will be <br />notified in writing if the plan for TR -34 is implemented and monitoring of this <br />spring will continue. <br />PRS -1: A grab sample and flow station located on the Middle Fork of the <br />Purgatoire River above the surface facilities of the New Elk Mine to act as a <br />control station without influence of m lnl ng. This station was selected to assess <br />stream quality and flow above mining activities. <br />PRS -la: A grab sample and flow station located on the Middle Fork of the <br />Purgatoire River above the West DWDA as proposed with TR -65. This station <br />was established in 2012 to assess water quality and flow above mining activities <br />in the western portion of the mine. <br />PRS -4: A grab sample and flow station located on the Purgatoire (NE -080} <br />River below the New Elk Mine Surface Facilities, and above the confluence with <br />North Fork. This station was established in 1993 to assess potential effects of <br />mining on stream quality. Results from this site are periodically sent to CDPHE <br />in NPDES reporting for site NE -080. <br />PRS -4a: A grab sample and flow station located on the Purgatoire River below <br />the disturbance proposed with installation of a ventilation fan proposed with TR - <br />65. This station was established in 2012 to assess potential effects of mining on <br />river quality. <br />RDA Pond: A dip sample acquired from either the discharge or directly from the <br />Section 2.05 RN -6 Repaginated 10/21/16 <br />