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Cresson Project – AM-11 Adequacy Review <br />Page 9 <br />May 03, 2016 (Revised May 31, 2016) <br /> <br />monitoring sites that are located outside of the proposed AM-11 permit <br />boundary. <br />4.1.4.3 Discussion <br /> Page 15: The text states that the (deep) groundwater monitoring well PGMW-2 has <br />shown dry conditions since installation in 2005. What is the completion and <br />screening depth of this well? As the operation moves into the North Cresson Mine <br />and the proposed underground mine, it will become increasingly important to monitor <br />for impact to the Cripple Creek drainage system. Have you considered installing an <br />alluvial groundwater well to monitor the shallow groundwater system present in <br />Poverty Gulch? <br />4.2 – Squaw Gulch <br />4.2.1 Current Conditions <br /> Page 15: The text indicates that multiple EMPs may exist in association with this <br />drainage. On Figure 1-1, two EMPs appear to be located near this drainage, including <br />EMP-008b and EMP-008c. Are these the only two EMPs associated with this <br />drainage? <br />4.2.3.1 Monitoring Program <br /> Page 16: The text lists one surface water monitoring station, SG-10. However, this <br />station is not shown on Figure 2-1. Please revise Figure 2-1 to show the location of <br />this monitoring station. <br />4.2.4.1 Monitoring Program <br /> Page 17: The text lists a total of 5 groundwater monitoring wells in Squaw Gulch. <br />However, only 3 of these wells are shown on Figure 2-1 (SGMW-5, SGMW-6A, and <br />SGMW-6B). Please revise Figure 2-1 to show locations of all monitoring sites <br />discussed in this section. <br /> <br /> Page 17: There appears to be a typo for the names of three of the groundwater <br />monitoring wells. The text lists “GVMW-6B, GVMW-7A, and GVMW-7B” which is <br />the naming system used for Grassy Valley. The Division believes this was a typo, and <br />that these three wells should begin with SGMW rather than GVMW. If this is the <br />case, please correct these typos in order to reduce any confusion they may cause. <br />4.3 – Gold Rush <br />4.3.1 Current Conditions <br /> Page 19: The text states that the Gold Run drainage is shown on Figure 1-1. <br />However, this drainage does not appear to be labeled on Figure 1-1. Please revise <br />Figure 1-1 to label this drainage. <br /> <br /> Page 19: The text indicates that multiple EMPs may exist for this drainage. However, <br />on Figure 1-1, no EMPs appear to exist for this drainage. Are there any EMPs <br />associated with the Gold Run drainage? If so, please add them to Figure 1-1. <br />4.3.4.1 Monitoring Program