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City of #k_. RAMSEY May 17, 2019 Richard & Claudia Aberle 17290 Germanium Street NW Ramsey, MN 55303 7550 Sunwood Drive NW • Ramsey, MN 55303 City Hall: 763.427.1410 • Fax: 763.427.5543 www.cityoframsey.com Re: City of Ramsey Engineering Department Findings on Expressed Drainage Concerns The purpose of this letter is to summarize and convey the findings of City of Ramsey Engineering Staff pertaining to the concerns you expressed during the regular City Council meeting on November 13, 2018, and during the regular Public Works Committee meeting on December 18, 2018. During these meetings, you expressed that your property has been negatively impacted by stormwater runoff resulting from the Covenant Meadows residential development, including the construction of 172nd Lane NW. During the Public Works Committee meeting, Staff presented information demonstrating that the overall drainage area contributing stormwater runoff to your property has been reduced from roughly 11.1 acres to 1.3 acres, and that the drainage patterns were generally unaltered because of the Covenant Meadows development. Enclosed are copies of the Engineering Technical Memorandum and the pre and post -development drainage area maps that were presented at the Public Works Committee meeting. Also enclosed are two exhibits showing overall drainage patterns west of and across your property both pre and post -development. The pre -development exhibit, titled "2-foot Aerial Contours (2003)" includes surface elevation data from 2003 that is accurate to within 2 feet. The post -development exhibit, titled "Current Conditions (2019)", includes survey grade data obtained with survey equipment in December 2018 and April 2019. The red arrows depict stormwater drainage patterns on the ground. As can be seen, construction that occurred during the Covenant Meadows development did not alter drainage patterns along the west or south sides of your property. It can also be seen that the low area in the interior of your property near your house has been in existence for many years, well before the Covenant Meadows development occurred. We therefore believe that your assertion that the City and/or the developer are to blame for water ponding in this area of your property is unfounded. To resolve this issue, we recommend filling this low area so stormwater runoff will continue to drain to the south and the east without ponding on your property. It is our mission to work together to responsibly grow our community, and to provide quality, cost-effective and efficient government services.