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Field parameters and water quality samples are collected at SGMW--S, SGMW-6A, <br /> SGMW-6B, SGMW-7A, SGMW--7B are analyzed for the groundwater parameters <br /> listed in Table 2-1. <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. However, <br /> this drainage does not appear to be labeled on Figure 1-1. Please revise Figure 1-1 to <br /> label this drainage. <br /> RESPONSE: A revised Figure 1-I is provided with the different drainages <br /> mentioned in the report labeled on the figure. See Attachment 2. <br /> • Page 19: The text indicates that multiple EMPs may exist for this drainage. However, on <br /> Figure 1-1, no EMPs appear to exist for this drainage. Are there any EMPs associated <br /> with the Gold Run drainage? If so, please add them to Figure 1-1. <br /> RESPONSE. The text referred to on Page 19 appears to be a general statement of the <br /> functionality of EMPs to control site-wide stormwater and not specific to Gold Run. <br /> There are no disturbance activities in Gold Run that would warrant installation of EMPs. <br /> Gold Run is a small drainage that is down stream of the western side of the Arequa Gulch <br /> VLF. There are several sedimentation ponds (BMPs rather than EMPs) designed to <br /> control stormwater from Highway 67. These sedimentation ponds are shown on Figure 2- <br /> 1 a (Attachment 2) and described in detail in the Storm Water Management Plan, Storm <br /> Water Pollution Prevention Plan and Best Management Practices for Cresson Project, <br /> Carlton Tunnel, and Chicago Tunnel Mine Sites in Teller County(January 2015). <br /> 4.3.4.1 Monitoring Prop' am <br /> • Page 20: The text lists 3 groundwater monitoring wells, GRMW-IA, GRMW-2A, and <br /> GRMW-3A, and refers to Figure 2-1. However, none of these monitoring sites are <br /> shown on Figure 2-1. Please revise Figure 2-1 to include all monitoring stations <br /> discussed in this section. <br /> RESPONSE: The three wells in Gold Run were installed to gather baseline data. They <br /> were last sampled in the summer of 2011. CC&V does not plan to continue monitoring <br /> at these locations but will continue to provide historical for these wells in the Hydrology <br /> Evaluation. Figure 2-1 and 2-1 a have been revised to show the location of other <br /> groundwater monitoring points (See Attachment 2). <br /> 4.4—Arequa Gulch <br /> 4.4.1 Current Conditions <br /> • Page 22: The text indicates that multiple EMPs may exist for this drainage. On Figure 2-1, <br /> it appears that there are two EMPs possibly associated with this drainage, EMP- 006 and <br /> EMP-011. Are these the only EMPs associated with this drainage? <br /> RESPONSE. Yes. EMPs and BMPs designed and constructed to control sediment from the <br /> Arequa Gulch process area are described in the Storm Water Management Plan/Storm <br /> Water Pollution Prevention Plan and Best Management Practices for Cresson Project, <br /> Carlton Tunnel, and Chicago Tunnel Mine Sites in Teller County, Colorado (January 2015). <br /> 4.4.3.1 Monitoring Program <br /> • Page 22: The text lists 3 surface water monitoring stations, AG-1.0, AG-1.5, and AG- <br /> 2.0. However, only two of these sites (AG-1.5 and AG-2.0) are shown on Figure 2-1. <br /> Please revise Figure 2-1 to show all monitoring stations discussed in this section. <br /> Page 19 of 28 <br />