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Ramsey Soil and Water Conservation District 2015 Rice Street Roseville, MN 55113 Fax 612/488-3478 Telephone 612/488-1476 August 15, 1997 Ms. Kim Lee, Roseville City Planner City ofRoseville 2660 Civic Center Drive Roseville, MN 55113 Subject: Lake Ridge Health Care Center parking lot expansion Dear Ms. Lee: On behalf of the Ramsey SWCD Board of Supervisors, thank you for the opportunity to comment on the proposed grading activity. As per our August 15, 1997 telephone conversation, I have the following general comments regarding the proposed grading activity. In addition, I understand the plan you gave me last week has been changed. Once a final site plan is available for the project, I would be pleased to assist City staff with its review and if necessary, make recommendations regarding soil erosion and sediment control activities. 1. I have concerns about the potential for sediment damage, during construction, to Owasso Lake. This concern is based on the Lake's very close proximity, the general slope gradient to the Lake, the inherent erodibility of the soils in this geographic area, and the existence of storm sewers that presumably outlet directly to the Lake. Aggressive soil erosion and sediment control activities during construction will be essential to minimize the potential for environmental damage. 2. The Ramsey County Soil Survey indicates that the Urban land-Hayden-Kingsley soils mapping unit may be found on this site. No reference to retaining wall or slope development limitations are cited in the mapping unit text. However, I recommend a qualified soils engineer be consulted to assesses any potential limitations based on soils information collected on site and to engineer the final grading plan. An Equal Opportunity Employer