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From:markg@gronbergassoc.com To:Jeremy Barnhart Subject:RE: Subdivision Code Date:Tuesday, September 8, 2020 9:16:58 AM My main concern is that an 18% slope is a perfect walkout lot and to call it not buildable does not seem right. From: Jeremy Barnhart <jbarnhart@ci.orono.mn.us> Sent: Tuesday, September 8, 2020 8:13 AM To: markg@gronbergassoc.com Subject: RE: Subdivision Code Mark, Thanks for your comment. We’ve always excluded slopes greater than 18% from the dry buildable calculation, but we only do the calculation at the time of platting, not when the house is proposed/ built. The changes we propose align the subdivision code definition with the existing zoning code definition. I will share your comment with the City Council. -Jeremy From: markg@gronbergassoc.com [mailto:markg@gronbergassoc.com] Sent: Saturday, September 5, 2020 8:25 AM To: Jeremy Barnhart <jbarnhart@ci.orono.mn.us>; Dustin Rief <drief@ci.orono.mn.us> Subject: RE: Subdivision Code Jeremy: My main concern after reading through this is the definition of dry buildable area excluding slopes over 18%. A typical walkout house drops 9 feet in 40 feet which is a 22.5% slope. When we regrade lots in a new subdivision the maximum allowed slope is 3:1 which is 33.3% slope. You could have new houses built on a buildable lot and then after grading a bunch of areas then don’t qualify for dry buildable. I have seen in some cities where slopes over 18% (steep slopes) need to be accounted for in erosion control and seeding but I see a lot of problems in excluding 18% slopes from dry buildable. In all the subdivisions I have worked on in Orono this has never been excluded in the past. From: Jeremy Barnhart <jbarnhart@ci.orono.mn.us> Sent: Tuesday, August 18, 2020 9:43 AM To: Dustin Rief <drief@ci.orono.mn.us> Cc: Jeremy Barnhart <jbarnhart@ci.orono.mn.us> Subject: Subdivision Code Surveyors, The City of Orono is considering changes to its subdivision code. As part of their review, the City