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City of Roseville Twin Lakes AUAR Letter of Agreement January 18, 2001 6 <br />Primary Responsibility: Civil Engineer <br />Task 15: Water Surface Use. We will verify with City staff the use, if any, of <br />recreational surface waters uses within the Study Area. <br />Primary Responsibility: DSU and Civil Engineer <br />Task 16: Erosion and Sedimentation. We will provide the acreage to be graded or <br />excavated and the cubic yards of soil to be moved. We will describe any steep slopes or <br />highly erodible soils and identify them on a site map. We will present any erosion and <br />sedimentation control measures to be used during and after project construction. <br />Primary Responsibility: Civil Engineer <br />Task 17: Water Quality - Surface Water Runoff. A detailed analysis of stormwater <br />issues within the AUAR study area will be conducted. The analysis of water quality will <br />include a map of the proposed stormwater management system and of the water bodies <br />that will receive stormwater, a description of the stormwater system which identifies on- <br />site and "regional" detention ponding and an indication of whether the various ponds will <br />be new water bodies or converted e�sting ponds or wetlands. Where on-site ponds will <br />be used but have not yet been designed, the discussion will indicate the design standards <br />that will be followed. <br />Primary Responsibility: Civil Engineer <br />Task 18: Water Quality - Wastewater. The AUAR will identify impacts of the routes <br />and recommend route adjustments or mitigations to the sanitary sewer system, to match <br />City projections as indicated. <br />Primary Responsibility: Civil Engineer <br />Task 19: Groundwater - Potential for Contamination. A map will be prepared which <br />will show the location of a11 known soil or groundwater contamination sites, as well as <br />sites, due to past land use or activities, that are likely to exhibit contamination. <br />Primary Responsibility: Civil Engineer <br />Task 20: Solid Wastes; Hazardous Wastes; Storage Tanks. Using the concept plan <br />developed for Twin Lakes, an estimate of total municipal solid waste generated at <br />buildout will be prepared. Additionally, the location of e�sting registered storage tanks <br />and hazardous waste generators within the AUAR area will be itemized and mapped. <br />Primary Responsibility: Civil Engineer <br />