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Hydrologic Soil Group D — High runoff potential — very slow infiltration rate The surficial geology consist unconsolidated glacial sediments during the Quaternary geologic period of two glacial ice lobes: the Superior lobe and the Grantsburg sublobe of the Des Moines lobe. The glacial deposits found in Ramsey County are primarily in the form of outwash, till, and stream and lake sediments ranging in thickness from 10 to 400 feet. Below the unconsolidated glacial sediment lies consolidated bedrock formed during the Early Paleozoic age. Bedrock units from youngest to oldest in Roseville include: Decorah Shale, Platteville- Glenwood Formation, St. Peter Sandstone, Prairie Du Chien Group, and Jordan Sandstone. Maps of the surficial geology and bedrock geology from the Ramsey County Geological Atlas can be found on Figure 6 and Figure 7, respectively. 2.4 Land Use and Land Cover The City of Roseville encompasses an area of 13.8 square miles which today is made up of mixed -land uses including established neighborhoods, parks and open space, and significant retail, commercial and industrial development. Some key aspects of the existing landuse pattern are: • Low - density residential is the dominant land use. This form of housing occupies more than 34% of Roseville's total land area. • Roadways have been an important factor in shaping the development pattern of Roseville. Business (commercial and industrial) uses are primarily concentrated in the western third of Roseville, along the I -35W and Highway 36 corridors. Commercial areas can also be found along major street corridors (e.g. Rice Street and Snelling Avenue) and at major street intersections. • Lakes, parks, and open spaces are defining characteristics of Roseville. Table 2 below provides a summary of the existing land use by category. For more detailed information about the future planned land -use refer to Chapter 4 of the City's 2030 Compehensive Plan. Table 2 Existing Land Use Land Use Category Acres % Total Single-Family Detached 2925 33.0% Single-Family Attached 126 1.4% Manufactured Home Park 9 0.1% Multifamily 279 3.1% Common Areas 59 0.7% Business/Retail 486 5.5% Office 192 2.2% Light Industrial 396 4.5% Heavy Industrial 471 5.3% Institutional 510 5.8% Parks and Open Space 1089 12.3% Right of Way 1810 20.4% Railroad 96 1.1% Vacant 33 0.4% Vacant Developable 129 1.5% Comprehensive Surface Water Management Plan ROSEV120222 City of Roseville Page 5