Resolution 6907 - Laserfiche WebLink

Home Browse Search

�In BOLTON 6907 / � 1 & MENK Real People. Real Solutions. Resol. No. Exhibit B LA18-000072 September 20, 2018 City of Orono Attn: Melanie Curtis 2750 Kelley Parkway Orono, MN 55356 RE: Preliminary Plat Application LA18-000072 2709 Walters Port Lane Engineering Review#1 Dear Melanie: As requested, 1 have completed an engineering review of the documents s�ibmitted for the above referenced project. We offer the following observations, comments, and recommendations for your consideration: 1. The applicant will be required to obtain Minnehaha Creek Watershed District(MCWD) approval and permitting. A copy of any approvals or permits required should be submitted prior to Final Plat approval. 2. The applicant will be required to obtain a General Consiruction Permit(NPDES)to discharge stormwater associated with construction activity since more than 1 acre will be disturbed. A copy of the coverage letter sho��ld be submitted prior to any land disturbing activity. 3. Final Plans should include a Stormwater Pollution Prevention Plan meeting NPDES requirements. 4. Insufficient data has been provided to review grading and erosion control. Existing contours should indicate condition prior to any grading. Proposed spot elevations and contours should be provided to adequately define grading and drainage after completion of improvements. Perimeter erosion control measures should be indicated down gradient from all proposed work. Where disturbance is proposed within 50' of the wetland or Lake Minnetonka, redundant measures must be installed. Redundant measures must be installed a minimum 5' apart. 5. Perimeter erosion control measures should be installed by the Contractor and inspected by the City prior to any work. A minim�i�n 24 hour notice must be provided prior to inspection. 6. Drainage and Utility Easements should be provided as follows: a. Over all wetland buffers. b. All swales and piping providing drainage for multiple properties. c. 5' along all side lot lines. d. 10' along all front lot lines. 7. Proposed improvements will significantly increase the amount of runoff directed toward the structure at 2707 Walters Port Lane. Inlets, pipes, and swales should be provided as necessary to restrict runoff directed toward the structure to that of existing conditions. 8. The common driveway shared by 2715 Pence Lane should be maintained as necessary to provide an acceptable driving surface at all times. Currently, the portion of the driveway between the culvert and the connection to 2715 Pence Lane is unacceptable. Class 5 aggregate should be placed as necessary to provide an adequate driving surface. The aggregate should be H:AORNOVC131154II6\�-LA18-000072_2709 Wal[ers PorCLanc\2709WaI[ersPortlane_PrePlatRevicw-1 201fl-09-20.docx Bp1Ypn&Menk is an eq�al cpportunity employe�.