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' 2335 Highway 36 W <br /> St.Paul,MN 55113 <br /> Te1651-636-4600 <br /> Fax651-636 1311 <br /> www.bonestroo.com <br /> September 14, 2010 �Bonestroo <br /> Melanie Curtis <br /> Planning and Zoning Coordinator <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay, MN 55323 <br /> Re: 515 Ferndale Road <br /> File No. 000139-10000-2 <br /> File No. 10-00812 <br /> Dear Melanie: <br /> We have reviewed the plans for a proposed pool and building at 515 Ferndale Road. The plans <br /> are dated 7-22-10 and contain hand sketched revisions extending the southeast pool end <br /> approximately seven feet from the original plans. We have the following comments with regards <br /> to engineering matters: <br /> • The plans should note that a retaining wall is necessary along the north side of the patio. <br /> The proposed grading plan and pool deck elevation of 1010.5 would result in a wall less <br /> than four feet in height. Should the wall height increase to over four feet, engineered <br /> plans would be required. <br /> • This project will disturb more than 100 CY of material. Sediment and erosion control <br /> information meeting the requirements of Orono's City Code 79-7(c)(2) must be <br /> submitted. The minimum $2000 sediment and erosion control financial security should <br /> be required of the owner for this permit. <br /> If you have any questions, please call me at(651) 604-4894 or send an email to <br /> darren.amundsenCa�bonestroo.com. <br /> Sincerely, <br /> BON ESTROO <br /> �J------.-���i <br /> Darren Amundsen <br /> Cc: Tom Kellogg <br />