1978-07-20 Letter, Proposal for Septic Repair

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Telephone 473-7357 SCITY CITY of ORONO Post Office Box 66* Crystal Bay, Minnesota 55323 • Municipal Offices ;OF ORON(^ On the North Shore of Lake Minnetonka July 20, 1978 Mr. James Olson Bonestroo & Associates 2335 Highway 36 Saint Paul, Minnesota 55113 Dear JdLm: Enclosed is a proposal by Jerry Johnson (septic system contractor) for a drainfield repair using a bed system at 248 Cygnet Place for the Dean Mblin residence. The site has some extensive limitations as to where additional drainfield could go. These limitations are in the form of steep slopes behind the house, landscaping in the front, and an intermittent creek to the east, as well as existing tree cover generally around the yard perimeter and a lot of only 1 acre. Present drainfield of approximately 320 s.f. is flowing directly to the creek. The proposed bed system will use 4*' plastic pipe in a grid pattern for distribution and will add 450 square feet of drainfield. Alternatives to this system would be two short trenches rather than a bed, but the maximum area which could be added would be about 200 s.f. Another alternative may be to cut down the trees to the southeast, add drainfield and pump from the second tank. A third and more expensive alternative may be a total mound system over the existing drainfield. Each of these alternatives would be constructed within 20-30 ft. of the creek where Orono code specifies a 75' setback. You may want to view the site - if so, call me. The Cygnet Place area has generally poor soils for septic systems and high water tables. At least 20% of the systems in the nei^borhood are failing. Please recomnend approval or disapproval of the proposed system, are going to run into more of these so be prepared. Sincerely, Michael P. Gaffron Septic System Inspector MPG:kh Enc.