2004-04-26_REVISION - M1978056 - Laserfiche WebLink

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Russian olive is no longer a desired species in Colorado. Locust and Plumb, along with Russian olive, was planted in the mid 1980's by the previous operator as a screen along the South boundary, at the request of Weld County, Colorado. We believe the necessary extent of this commitment is completed and there is no basis to believe reclamation will be enhanced by subsequent plantings. W e have no plans to continue the planting of trees. The post mine development of site will be a better gage as to the desirability of such a commitment. 18. Please indicate whether VCI will continue to maintain and commit to a 100 foot buffer between the reclaimed pond edge and the top of bank for the Cache La Poudre river. This commitment was retained, as evidenced and measurable in the included Exhibit C - Pre- Mining and Mining Plan Map. Reclamation efforts were made over the previous year to assure this commitment, and is reflected on Exhibit C -Mining Plan Map. This commitment is also affirmed under page 4 of Exhibit L -Reclamation Costs -Water. 6.4.6 EXII131T F -Reclamation Plan Mao 19. The elevations noted on the Exhibit F -Reclamation Plan Map aze not readable. Please provide a reclamation plan map with clear and readable elevations and/or contours. The elevations are limited by the scale of the operation. The elevations shown on Exhibit F - Reclamation Plan Map aze two (2) foot contours. To increase the size of the numbers on the map would make them lazger than the adjacent contours. We propose to blow up a representative segment for reference elevations, or otherwise create some manner of reference elevations on outlying contours from which the two (2) foot contours could be counted. If this will satisfy the Division, the necessary revision to the Exhibit F map will be made. 6.4.7 Eabibit G -Water Information 20. In accordance with Rule 6.4.7, please provide a statement of whether the operation is or is not expected to duectly affect surface or groundwater systems. (The Division anticipates that the groundwater system in the affected land and surrounding area will be duectly affected since at least 125 acres will be de-watered to an average depth of at least 25 feet and dry mined). Please respond. The significance of any impacts from past dewatering have not evidenced themselves in 20 yeazs of operations. The potential for impact was analyzed by C.G.R.S. Based upon this analysis and historic conditions, impacts to surface or groundwater systems are not anticipated. This is supported by approval of a Substitute Supply Plan by the Office of the State Engineer. Impacts to the floodway remain under assessment by Anderson Consulting of Fort Collins, Colorado. While impacts to this stream segment are alleged, the actual determination of impacts is pending. if impacts are found, any necessary corrective action determined by the consulting engineer will, as applied, restore integrity to assure such impacts aze not sustained. 21. Tn accordance with Rule 6.4.7(2xb), please identify and characterize the known aquifer to be de-watered and dry mined. Please include the average or the expected range of groundwater depth below the ground surface, assuming natural and non-disturbed conditions. Please respond. Varna Companies, Inc. MI978-056 Durham Sand & Gravel Pit - 2003 Amendment - 10 Monday 26 April 2004 reply to correspondence from the Colorado Division of Minerals and Geology of 6 January 2004.