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Development Engineering, P.A. <br />9051 Flying cloud Drive <br />Eden Prairie, MN 55347 <br />Fax: (612) 941-3030 <br />5 April 1996 <br />Mr William Waldron <br />1880 Fox Street <br />Wayzata MN 55391 <br />Re: SITE EVALUATION 5 SYSTEM DESIGN <br />Proposed Onsite Wastewater <br />Treatment System <br />1880/1.860 Fox Street, Orono, Minn <br />Protect 95-127 <br />As per your request and authorization, we have completed a Site <br />Evaluation, consisting of seven soil borings, eight percolation <br />tests and other work, at the above referenced location. In addi- <br />tion, we "prospected" in other areas to get an over-all view of the <br />total parcel. The purpose was to assess suitability for onsite <br />treatment of wastewater and to determine design paramaters. Please <br />accept this letter and attachments as my report. We understand that <br />you are required by Orono to replace your functioning but non -con- <br />forming systems. <br />We originally set out to perform two site evaluations; one for your <br />main residence at 1880 Fox Street << d one for your smaller house at <br />1860 Fox Street. However, due to various rules of both Minnesota <br />and Orono (eg, max 6% slope, 75' wetlands setback, no system on <br />fill, etc), we were unable to locate a site meeting requirements on <br />the 1860 Fox Street tract, nor could we locate one on the 1880 Fox <br />Street tract just north of the property line between the two. Ul- <br />timately, we settled upon one common site northwest of your main <br />residence. <br />The land in the area t is fairly uniform, with slopes of 5.7% <br />in the upper portion, i the lower portion. Site vegetation <br />consists of mainly of s! 3intained grasses, with some small <br />trees and brush in the a ortion. We anticipated clay soil and a <br />high restricting layer (a, -ing). We ultimately located two areas, <br />a primary s.te and an alteLnate site, after some setback measure- <br />ments, field pre -design, etc. We chose this area as we judged it to <br />hold the best potential to ultimately meet all requirements. <br />Test locations and relevant topographic data wwere were determined <br />using an engineer's total station instrument. Locations are shown <br />on the attached sketch. They were additionally marked in the field <br />with lath. Ground surface elevation at each test point and at other <br />necessary points were also determined, Bench mark used is the top <br />