2012-00205 - retaining wall - Laserfiche WebLink

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Christine Mattson From: Jesse Struve �� 0�� Sent: Thursday, March 22, 2012 3:01 PM To: Christine Mattson Subject: 20120322 1390 Cherry Place stair replacement Christine, I have reviewed the application for 1390 Cherry Place where they are proposing a stair and retaining wall replacement. I have also spoken with the contractor(Tim Lovett) and my understanding of the project is they are going to leave in place the existing staircase and construct new stairs above the existing staircase. The contractor is also going to remove and replace an existing 5' high retaining wall with a wall under 4 feet in height. The retaining wall work will be done mainly by hand, but there is a possibility a small excavator will be required. Since the proposed wall is going to be under 4' in height and they are not removing the existing stairs I do not see additional requirements needed per City Code for the permit. I do have some concerns the applicant should consider prior to construction: 1. If an excavator is required,the disturbance to the existing ground must be minimized to avoid erosion and slope destabilization. 2. The wall being proposed to be under 4' in height and by code does not need engineering plans or approval. I would highly recommend the applicant consult with an engineer to determine slope stability and soi►strength before installation of the proposed wall. 3. Any disturbance to the slope must be revegetated and stabilized as soon as possible after disturbance to avoid additional erosion or bank destabilization. 4. Erosion control shall be installed as shown on the approved partial plan printout. If you have additional questions or concerns, please do not hesitate to contact me. Jesse Struve, PE Director of Public Works/City Engineer City of Orono (952) 249-4661 - Direct (952) 249-4616 - Fax www.ci.orono.mn.us 1