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Mika Gaffron From: Kelly-Schoborg Land Services, Inc. [kelly@schoborgland.com] Sent: Tuesday, June 02, 2015 2:06 PM To: Mike Gaffron Cc: Christine Mattson; Melanie Curtis; Jeremy Barnhart Subject: 2310 Oliver Hill Attachments: 7899-GJC-060115.pdf Mike, I greatly appreciate you showing your calculations in the email. It made the calculation process much more understandable. Since your message last week,my client has discussed this project with the owner and with the engineer who will be working with us from here on out, Marty Campion.They decided to lower the basement floor by 0.5 feet and then move the house to the point at which at least 50%of the perimeter is at or above the 997.5 contour(0.5 feet lower than the plan that you analyzed and used the 998 contour,because the basement floor will be 0.5 feet lower). We have revised the survey accordingly.As you will see,the house is moved back by 0.4 feet from the previous revision, and the perimeter of the footprint of the house at or above the 997.5 contour line is 86.3 feet(see the note on the left side of the survey). We put the"new existing grade"(grading plan)contours back on the survey, instead of the current existing grades. From here on out, Marty Campion will be designing the proposed contours on this project. Please review the survey and let me know if there are any other changes that need to be made or obstacles to overcome before the permit can be granted.Thank you for your help. Kelly Brouwer Schoborg Land Services, Inc. 763-972-3221 (office) 763-442-2715 (mobile) kelly@SchoborgLand.com From: Mike Gaffron <MGaffron@ci.orono.mn.us> To: "'Kelly-Schoborg Land Services, Inc."' <kelly@schoborgland.com> Cc: Christine Mattson <CMattson@ci.orono.mn.us>; Melanie Curtis <MCurtis@ci.orono.mn.us>; Jeremy Barnhart <jbarnhart@ci.orono.mn.us> Sent: Tuesday, May 26, 2015 4:17 PM Subject: RE: Oliver Hill Issues Kelly— Yes, I'm looking at the plan dated 5/13 with grading plan contours shown. See attached drawing. Square footage has nothing to do with it— it's the percentage of the lowest level's perimeter length that determines whether lowest level is a basement or a story. Based on the survey and house plans, the basement floor elevation is 994.0, main floor is (8.67 + 1.5) = 10.17 feet above that or elevation 1004.17. Critical 6' exposure elevation is therefore 998.17. The total perimeter of the lowest level is 38 + 48 + 12.9 + 2 + 21.5 + 34 +4 + 11.9 (labeled on attached drawing as A thru H) = 172.3' The portion of the perimeter that has exposure of less than 6' is that portion of the perimeter west of points X and Y (I used 998.0 instead of 998.17) calculated as 1 + 2+ 21.5 + 34 + 4 + 11.9 + 7 = 81.4 ' Percentage of perimeter that has exposure less than 6' is 81.4' / 172.3' = 47.2%. In order to get to 50%, need to increase countable perimeter to 86.2'. 86.2—81.4 = 4.8 feet. This can be accomplished simply by moving the house 2.4 feet west, which will add 4.8 feet to the calculable perimeter. It looks like you may be able to do 1