Laserfiche WebLink
fine-grained, feldspathic sandstone on the lower part; it ranges in thickness from 71 to 101 feet. St. Lawrence <br />and Franconia Formations are dolomitic shale and siltstone (ranging from 34 to 59 feet thick) underlain by very <br />fine-grained, feldspathic sandstone, generally well-cemented with dolomite (116 to 160 feet thick). <br />There are no karst or sinkhole features in the AUAR study area. <br />b.S-D,NRCS(SCS) <br />OILS AND TOPOGRAPHYESCRIBE THE SOILS ON THE SITE GIVING CLASSIFICATIONS AND <br />,.D, <br />DESCRIPTIONS INCLUDING LIMITATIONS OF SOILSESCRIBE TOPOGRAPHY ANY SPECIAL SITE CONDITIONS <br />,,,, <br />RELATING TO EROSION POTENTIAL SOIL STABILITY OR OTHER SOILS LIMITATIONS SUCH AS STEEP SLOPES <br />.P/ <br />HIGHLY PERMEABLE SOILSROVIDE ESTIMATED VOLUME AND ACREAGE OF SOIL EXCAVATION ANDOR <br />.D( <br />GRADINGISCUSS IMPACTS FROM PROJECT ACTIVITIESDISTINGUISH BETWEEN CONSTRUCTION AND <br />).I <br />OPERATIONAL ACTIVITIES RELATED TO SOILS AND TOPOGRAPHYDENTIFY MEASURES DURING AND AFTER <br />,, <br />PROJECT CONSTRUCTION TO ADDRESS SOIL LIMITATIONS INCLUDING STABILIZATION SOIL CORRECTIONS OR <br />.E/ <br />OTHER MEASURESROSIONSEDIMENTATION CONTROL RELATED TO STORMWATER RUNOFF SHOULD BE <br />I11... <br />ADDRESSED IN RESPONSE TOTEMBII <br />Soil data was obtained from the NRCS Web Soil Survey. As shown inTable 10-1, the study area contains <br />2 <br />nine soils types but is predominately made up of soil identified as 1039, Urban land. <br />Table 10-1. Soils in the AUAR Study Area <br />Map Unit <br />Map Unit NameAcresPercent of Study Area <br />Symbol <br />132CHayden fine sandy loam, 6-12% slopes1.10.2% <br />158BZimmerman loamy fine sand, 0-6% slopes23.45.5% <br />158CZimmerman loamy fine sand, 6-12% slopes1.90.4% <br />859BUrban land-Zimmerman complex, 1-8% slopes12.83.0% <br />860CUrban land-Hayden-Kingsley complex, 3-15% slopes22.45.2% <br />861CUrban land-Kingsleycomplex, 3-15% slopes20.24.7% <br />863Urban land-Lino complex, 0-3% slopes0.10.0% <br />1039Urban land338.478.9% <br />1813BLina variant loamy fine sand, 2-6% slopes8.21.9% <br />WWater0.30.1% <br />According to the Geologic Atlas of Ramsey County (Minnesota Geological Survey, 1992), the surficial soils in <br />the study area are primarily buried, coarse meltwater stream sediment; and till beneath sandy lake sediment, <br />with small areas of till and organic sediment. The surficial deposits in heavily developed areas, such as those <br />in the study area, are frequently covered by thick artificial fill or reworked local materials. <br />The topography of the AUAR study area is generally flat (seeFigure 5-2) with the exception of the southeast <br />corner which has moderate to steep slopes. Stabilization on these slopes will be provided by means of <br />vegetation establishment, erosion control blankets, or other standard methods of erosion and sediment control <br />devices. <br />The earthwork associated with the development will consist of excavation and embankment for the <br />infrastructure improvements, followed by site grading for the development of individual lots. Existing <br />topographic information indicates that a large amount of earthwork will be needed across the site. The <br />southeast side of the site is significantly higher than the rest of the site, and may require more grading due to <br />http://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx, accessed November 18, 2013 <br />2 <br />June 2014– Final AUAR9 <br />