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<br /> <br />extends north of the development area onto the back of a few of the Hidden Hollow (north) lots. <br />Rice Creek Watershed District is the authority having jurisdiction over wetlands in Mounds <br />View and the applicant will need to submit an application to them for general grading, <br />stormwater management and the potential alteration of the wetland. <br /> <br />Soils: A total of five soil test borings were put down on the site on December 11, 2003. (see <br />below for specific boring locations.) Fill was encountered at the surface of all borings. The fill <br />thickness varied from 5’ at B1 to 10” at B5. The fill soils included surficial organic silty sand, <br />and a mixture of silty sand, sand and clayey sand. Based on the penetration values, the fill had <br />low to moderate density. Topsoil was encountered below the fill at boring B1. The topsoil <br />consisted of organic silty sand and was 1 ½” thick. Coarse alluvium was encountered in all test <br />holes. This included sand with silt and sand. Fine alluvium was encountered between coarse <br />alluvial sand layers in boring B3. This was a 2 ½ ‘ thick layer of silt. Groundwater was <br />detected in all borings at depths ranging from 9.7’ to 13.8’. Recommendations include <br />removing old fill and topsoil and any very fine alluvium if encountered within 3’ of basement or <br />footing grade, and replacing with engineered fill to attain final grades. <br /> <br /> <br />3049 Woodale Subdivision <br />Staff Report <br />Page 3