04-22-1981 Council Agenda - Laserfiche WebLink

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4/1/81 Gervais Shores -2- 4. The top of the fill is graded in a manner that will cause runoff waters to concentrate in the vicinity of the lot line between lot 9 and lot 10. A review of the above site characteristics leads to the following recommen- dations concerning development of this lot as it presently exists: 1. The building site characteristics of the fill are unknown. Being placed over existing vegetation and being of unknown compaction, this material may not be capable of supporting a hone. The material, given its depth, its compaction and the woody vegetation beneath it may be prone to settling for a period of years. The bearing strength of the material should be investigated by a professional, soils engineer. 2. Sidehill seepage may be a problem in the area. If seepage into the fill from the adjacent slopes occurs, it may create instability within the fill. Again, the services of a professional soils engineer are recommended. 3. Erosion of the fill material is a potentially severe hazard. The slope of the area between the fill and the lake does not provide a good opportunity for sediment, from this erosion, to drop out prior to reaching the lake. The potential for sediment damage to the lake from erosion on the fill is high. The appendix contains recommendations to temporarily reduce this hazard. 4. The road curve at the lot should be designed to ensure stoxmwater run- off does not flow through the lot. The street may currently be adequate in this regard; however, if the answer to this question is not known, it should be addressed and settled. Sincerely, Stan Wendland, District Conservationist Ramsey County Field Office 24