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City of Ramsey 15153 NOW'THEN BOULEVARD N.W., RAMSEY, MINNESOTA 55303 ,, {612) 427-1410 January 27, 1993 Barton Sand & Gravel Co. 10633 - 86th Avenue North Osseo, Minnesota 55369 RE: Renewal of Mining and Grading Permit Dear Ms. Sue Turner: In 1988, Barton Sand & Gravel received a permit for the mining of sand and aggregate material in the North Half of the Northwest Quarter of Section 27. At that time, a five sheet set of plans, prepared by Land Graphic Design, was submitted as the basis for the permit conditions. On December 31, 1992, the aforementioned mining and grading permit expired and you have subsequently filed an application for the reauthorization of the permit based on the same set of plans submitted for the original permit. In reviewing these plans, I have found a number of conditions which have been modified since the original submittal and offer the following information as the basis for requesting a modification to those original plans submitted: · The existing grading plan should be revised to eliminate the grading necessary to accommodate the airport runway and the relocation of County Road #116. Sheet 2 of 5, which contains the rough grading plan, shows cuts between two feet and 16 feet are anticipated to bring the area down to an essentially "tabletop" fiat parcel. It is suggested that a final grading plan be developed having a minimum grade of 0.5% as this is the minimum acceptable grade to accommodated future roadways. This will enable the property to be economically developed following mining activities. If the slope is directed toward the wetland, future storm sewer costs can be minimized. The existing grading plan includes a small area of deciduous trees adjacent to the wetland which are located within the area to be mined. Presumably, this was acceptable due to the fact that this area would need to be disturbed to accommodate the realignment of County Road #116. Since it is now apparent that the realignment will not be necessary, these deciduous trees should be preserved and the working area boundary should be relocated accordingly. .,, The submittal should be revised to show the extent Of the areas mined to date. The plan should also include an example mining plan with erosion control and sedimentation measures. I have some sample plans to assist you, if necessary. Care must be taken to avoid any operation within a wetland area. Wetlands are no longer identified solely upon the ordinary high water elevation. Type I Wetlands are often times indiscernible to the layperson. We recommend an assessment of the wetland boundary