Laserfiche WebLink
SECTION 2 <br /> <br /> <br /> <br /> <br />Surface Water Management Plan Section 2: Land and Water Resource Inventory <br />City of Arden Hills <br />WSB Project No. 3455-200 Page 3 <br /> <br />Group B - These soils have moderate infiltration rates generally ranging from 0.3 to 0.45 inches <br />per hour when thoroughly wetted. Group B soils consist of deep moderately well to well drained <br />soils with moderately fine to moderately coarse textures. <br /> <br />Group C - These soils have slow infiltration rates generally ranging from 0.06 to 0.2 inches per <br />hour when thoroughly wetted. Group C soils have a moderately fine to fine texture. <br /> <br />Group D - These soils have very slow infiltration rates generally ranging from 0 to 0.06 inches per <br />hour when thoroughly wetted. Group D soils are typically clay soils with high swelling potential, <br />soils with high permanent water table, soils with a clay layer at or near the surface, or shallow <br />soils over nearly impervious material. <br /> <br />The runoff potential of an area is determined using these general soil characteristics in <br />combination with land use classifications, vegetation of the area, and rainfall intensity determined <br />from charts for the various design storms. <br /> <br />A summary of the soil group classifications in Arden Hills can be found in Table 2-3. Figure 2 <br />shows a soils map for the City. <br /> <br />Urban Land generally consists of fill that has been placed in urban areas. It tends to not fit under <br />a soil group. Areas where the land was unable to be surveyed fall under the “unknown” category, <br />due to the inability to classify the soil groups. <br /> <br />Soil characteristics are also considered when developing erosion control plans. Special <br />procedures for erosion and sediment control should be incorporated into all construction projects <br />per the City’s Erosion and Sediment Control Ordinance (Appendix B). <br /> <br />Table 2-3 Summary of City Soil Groups <br />Soil Group Percentage of <br />Total <br />A 7.8% <br />A/D 6.0% <br />B 20.9% <br />B/D 4.6% <br />C 0.1% <br />C/D 0.0% <br />D 0.0% <br />Urban 46.5% <br />Water 7.9% <br />Unknown 6.2% <br /> <br />Various resources on sediment and erosion control are available through several agencies, <br />Institutions, and trade groups as follows: <br /> <br /> Minnesota Local Road Research Board (LRRB): The 2003 Erosion Control Handbook for <br />Local Roads. <br /> <br />Dr <br />a <br />f <br />t <br /> <br />11 <br />/ <br />2 <br />0 <br />/ <br />2 <br />0 <br />1 <br />7