Agenda - Council - 12/14/2010 - Laserfiche WebLink

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Legacy Christian Academy Final Plat and Site Plan Review December 8, 2010 Page 4 of 7 o Note that the buffer yard requirements could be satisfied by repositioning some of the proposed site landscaping. Tree Preservation Plan: A tree preservation plan, prepared by Anderson Engineering and dated September 3, 2010, has been submitted. Tree protection fencing must be installed prior to the commencement of any earthwork. There shall be no trenching within the dripline of protected trees nor shall there be any storage of equipment, materials, debris, soil deposits or fill within the protected tree zone. Engineering Review Reviewer: Tim Himmer, City Engineer th imme,ci. ramsev. mn. us 763 - 433 -9893 Traffic Analysis: A traffic analysis was submitted for review, and it generally conforms to the existing traffic study that was prepared for the previous residential development on this site ( SUMMERSET MEADOWS) The analysis confinns that traffic volumes from this proposed development will be less than those originally proposed under the SUMMERSET MEADOWS proposal, so no additional modifications will be required to the planned intersection improvements at Armstrong Boulevard and Bunker Lake Boulevard. Additional traffic analysis may be required when the proposed Outlots advance to the development stage and a project has been submitted for review. Anoka County has also been forwarded this analysis for review and comments. Grading and Drainage: The proposed grading plan appears to work generally well, but there are a few locations that should be evaluated for improvements. All internal access roads and parking areas must have concrete curb and gutter on the edges and around the perimeter. The north slope for Pond -1 should be reinforced to protect against erosion concerns from the proposed sheet flows to the pond in this location. Attempts should be made to relocate pond inlets and outlets such that greater separation exists for adequate stormwater treatment; this concern is most prevalent within ponds 1 and 5. Based upon the improvements proposed permits will be required from the Lower Rum River Water Management Organization and the MPCA (NPDES construction permit).Revised drainage calculations have been received by City staff, and this information was also submitted to the LRRWMO for review as part of the watershed permit requirement for this project. Staff will defer to the LRRWMO as it relates to the proposed private stormwater system that will not discharge to the existing wetland complex on the property (not to the public system), and the proposed stormwater system for the public infrastructure portions of the project will be reviewed as part of the final design for the improvements proposed under the feasibility study. Additional items that will be evaluated within this feasibility study include; pipe material and sizing, utility extensions, roadway design, cost breakdowns, trails, etc. Maintenance agreements will be required for all private storm ponds to ensure that they continue to function as designed and will remain in perpetuity.