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Mike Gaffron <br /> From: Mark<markg@gronbergassoc.com> <br /> Sent: Tuesday, May 17, 2016 5:02 PM <br /> To: Mike Gaffron <br /> Cc: Adam Edwards; Scott.Gronholz@wellsfargo.com <br /> Subject: RE: 1070 Hunter Drive <br /> I get 1.1 acres of disturbance not including the septic area that will also need to be disturbed. I will prepare the SWPPP <br /> plan and get the application ready for a NPDES permit. <br /> In talking with the builder he has someone working on the engineering for the retaining walls. <br /> From: Mike Gaffron [mailto:MGaffron@ci.orono.mn.us] <br /> Sent:Tuesday, May 17, 2016 1:36 PM <br /> To: 'Mark'<markg@gronbergassoc.com> <br /> Cc:Adam Edwards<aedwards@ci.orono.mn.us>; 'Scott.Gronholz@wellsfargo.com'<Scott.Gronholz@wellsfargo.com> <br /> Subject: 1070 Hunter Drive <br /> Mark— <br /> We have received the rain garden calculations and revised survey for 1070 Hunter Drive. I have reviewed the revised <br /> floor elevations and find that the confirmed highest existing adjacent grade of 1019.4' and lowering of the house by <br /> approximately 2.5 feet have resulted in defined height being just under 30'which conforms to the code. Accordingly I <br /> have approved the zoning review. However, in reviewing the site plan there are two grading issues that need additional <br /> information before we can issue the permit: <br /> 1) We will need engineering on the retaining walls that exceed 4 feet in height. <br /> 2) We need a calculation on the square footage of ground to be disturbed, as it appears to be close to an acre and <br /> may require an NPDES permit. <br /> Please provide the required information as soon as possible. Call me or Adam if you have any questions. <br /> Mike <br /> Michael P.Gaffron <br /> Senior Planner <br /> City of Orono <br /> (Street Address)2750 Kelley Parkway <br /> (Mailing Address)P.O.Box 66,Crystal Bay,MN 55323 <br /> Phone:(952)249-4622 <br /> Fax: (952)249-4616 <br /> 1 <br />