2007-11-14 CC Packet - Laserfiche WebLink

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'Ii'> \.-.-~- , * Hydric soils, prime farmland soils and other important farmland soils were identified using the USDA NRCS online Soil Data Mart tool for Anoka County, Minnesota. Prime farmland, as defined by the USDA, is land that has the best combination of physical and chemical characteristics for producing food, feed, forage, fiber, and oilseed crops and is available for use in these areas. The designation is not meant to include land that is urban or built up. Soils designated as farmland of statewide importance are not considered prime but are still considered of value for agricultural use. **The hydrologic soil group refers to soils grouped according to their runoff-producing characteristics. The chief consideration is the inherent capacity of the soil bare of vegetation to permit infiltration. The slope and kind of plant cover are not considered but are separate factors in predicting runoff. Soils are assigned to four groups. In Group A are soils having a high infiltration rate when thoroughly wet and having a low runoff potential. They are mainly deep, well drained, and sandy or gravelly. In Group D, at the other extreme are soils having a slow infiltration rate and thus a high runoff potential. They have a clay pan or clay layer at or near the surface, have a permanent high water table, or are shallow over nearly impervious bedrock or other material. A soil is assigned to two hydrologic groups if part of the acreage is artificially drained and part is undrained In general, water moves through coarse textured soils at a faster rate than through medium or fme textured soils. Therefore, potential impacts to ground water from spilled chemicals would be expected to be greater in areas with coarse textured soils. However, many factors in addition to soil granularity can affect infiltration and percolation rates in . soils. . Some of-these factors include: soil water content, soil frost, the temperature of soil and water, surface roughness, the nature of the soil pore openings, vegetative ground cover, and the degree of soil compaction. Although chemical substances may be transported over the roadways in the project area, their use or storage on a permanent basis is not associated with the proposed project, other than in small quantities typical of residential, retail, and office use. 20.Solid wastes, hazardous wastes, storage tanks a. Describe types, amounts and compositions of solid or hazardous wastes, including solid animal manure, sludge and ash, produced during construction and operation. Identify method and location of disposal. For projects generating municipal solid waste, indicate if there is a source separation plan; describe how the project will be modified for recycling. If hazardous waste is generated, indicate if there is a hazardous waste minimization plan and routine hazardous waste reduction assessments. Demolition of existing structures to allow for redevelopment will generate waste materials. In addition to typical construction materials, it is possible that asbestos and other hazardous materials may be present in the structures to be demolished. Additional investigation will be needed to ensure that demolition of buildings and disposal of materials/debris is conducted in an appropriate manner in accordance with federal, state and local regulations. Construction activities will also generate solid waste materials. Materials will likely include waste concrete and asphalt, as well as other materials used in construction. It will also include organic debris such as shrubs and plant materials. Specific volumes of general waste materials to be generated are not known at this time. .W aste. materials will be recycled or disposed of in accordance with applicable local, state, and federal law. After the redevelopment, solid waste from the area will be similar to c.urren! cOl!gj!~ons and will consist of typical household, commercial retail and office wastes. Wastes will 17