2011-06-21_APPLICATION CORRESPONDENCE - C2010088

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Corey Heaps CAM Colorado LLC June 21, 2011 Page 12 Map 02, "Surface Ownership ", does not show sufficient aerial extent to the west and north. Please revised Map 02 to show all relevant surface water users. CAM Response: Map -02 has been revised to show a greater aerial extent to the West and North of the Loadout property. Pages 2.03 -4 & 5 have been revised with land ownership information. Page 2.03 -6 has been revised due to page numbering. Division Response: Response accepted. 18. Referring to Map 08, "Hydrologic Monitoring Locations ", please explain why surface water monitoring stations US -LD and DS -LD are Iocated as far upstream as they are. US- LD is located about 3,000 feet upstream from the permit boundary and DS -LD is located not even midway along the western edge of the permit boundary. The downstream Loma Drain surface water sample location (DS -LD) is actually located upstream of all disturbance areas proposed for the loadout.. Please clarify this or provide justification for this site selection. It appears that a better site for downstream sampling on Loma Drain would be further to the south where it exits the permit boundary similar to the site selection for downstream Reed Wash (DS -RW). CAM Response: An additional monitoring point, Lower Downstream Loma Drain (LDS) has been added, and is included in Exhibit 3. Map -08 has been revised and shows new monitoring point LDS. The US -LD is a convenient monitoring point along County Road 13.5. Loma Drain flows through a culvert at this location so flows can be determined. Land ownership is an issue in this area. The Applicant does not have any right of entry between the upstream Loma drain monitoring point and the permit boundary which is a distance of about 0.6 miles along the stream channel. Division Response: Response accepted. 19. Referring to Map 08, "Hydrologic Monitoring Locations ", please explain why surface water monitoring station DS -CR is Iocated where it might be influenced by the adjacent gravel pits and by the flow from the upriver Grand Valley Canal. CAM Response: The DS -CR point was chosen because it is below the Loadout operations, and access is readily available via the Loma boat ramp. It is unknown which gravel pits the DRMS is referring to, but if it is the Gravel pit shown north of DS -CR, that is a dry pit approximately 80' above the monitoring point. If DRMS is referring to the Gravel pit East of the Loadout operation, that pit will affect downstream results regardless of where a monitoring point is chosen. In regard to potential impacts from the Grand Valley Canal, the person who performs the monitoring will indicate when the Canal is flowing.