6.7. SR 10-18-1999 - Laserfiche WebLink

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. Planning Commission Members August 19, 1999 Page Two . B. Grading Drainage and Erosion Control Plan . The plan shows a number of retaining walls. There is a 4-foot high retaining wall on Lot 10, Block 4, a 7 -foot high retaining wall near the NURP Pond at the northeast corner of the plat, a two-tiered 8-foot high retaining wall in the rear yards of Lots 8 & 9, Block 1 and a 4-foot high retaining wall on Outlot A in M-Vale where the road would be put through. It is our understanding that the retaining walls in the public areas would be maintained by a homeowner's association and the retaining walls on individual lots would be the responsibility of the lot owners. . There are two NURP ponds shown on the development, one on the northeast corner, which takes a small amount of the drainage. The major portion the drainage is directed to the NURP pond in the south central portion of the plat. The Park and Recreation Commission made a recommendation that this NURP pond be removed from the park area as much as possible. The developer has moved this NURP pond northerly into Lots 13 & 14. This seems to provide adequate space for the park trail to be constructed between the wetlands and the NURP pond. . Drainage calculations have been submitted and reviewed. There are a few minor adjustments we will be asking developer to make and resubmit the calculations. In general, I believe the drainage calculations are adequate for the development. . We have reviewed the grading plan relative to opportunities to minimize the amount of tree loss. In general, we can find only isolated lots where a change in the style of home to be constructed could possibly save some trees. However, there would be other problems associated with this, for instance, sticking a full basement house into a line of walkout homes. In general, we believe the developer has worked with the natural grades of the land. This still does result in a significant amount of vegetation being cleared from the site. C. Utility Plan . Sanitary sewer service will be provided by extending gravity sanitary sewer from Meadowvale Heights Addition in the southeast corner of the Seven Oaks Development. This gravity sewer ultimately flows to a lift station in the Meadowvale Heights Development. The lift station is adequately sized to handle the additional lots. . The developer has shown the looping of watermain through the cul-de-sac areas in accordance of the Elk River Municipal Utility policy. . On the standard detail sheet for the typical street section, the detail shows one roll of wood fiber blanket behind the curb line. This should be changed to 3-feet of sod. If you have any questions regarding any of these comments, I will be in attendance at your August 24, 1999 Planning Commission Meeting. Sincerely, . Howard R. Green Company ~~ ./z.,bl~ . . .~~~ T;rry J. aurer, P.E. O:\PROJ\807040J\0240\040-1901.Qo~rd R. Green Company CONSULTING ENGINEERS