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TO: <br />FROM: <br />DATE: <br />Jeanne A. Mabusth, Zoning Aciininistrator <br />Michael P. Gaffron, Septic System Inspector <br />September 14, 1983 <br />SUBJECT: #778 Jo ^n Grimes, 4720 North Arm Drive West - <br />Subdivision - Site Evaluation For Septic Systems <br />and soil boring information <br />commentsf subject project, and wish to make the following <br />1. <br />3. <br />4. <br />5. <br />drlinfi2ld^»v?®^^''*^^n? September 12, 1983, the existing <br />hT ^ <br />2. <br />condition IS. My suggestion to the homeowner is that <br />be uncovered, pumped out, and baffles checked <br />and repaired/replaced if necessary. <br />The four boring taken on the proposed new lot by GME <br />Consultants, coupled with the Hennepin County Soil Survey <br />tested sites are a Kilkennv loam or clay loam transitioning to a wetter Hamel Loam. ^ <br />Percolation rates in holes within 20' of each other were <br />5"°"’ i" ” "'Pi' thfrlng^ f^ruse of drainfield trenches. The boring logs do not indicate <br />the presence or absence of soil mottling a? specific deoths <br />presence of possibility of occurLce of perched <br />is limiting fortrenches; it is obvious that in the area of boring 3 the <br />presence of wet soils would preclude the use of trenches. <br />^ boring on the site on September 12, 1983, located <br />about 36"?^ ®°"'® "°bbling starting at ^ <br />Departmenrre^anf?’^'^.^''®''®^':'’'® *''’® Building t Zoning^Pti^IrL to require testing of an alternateseptic area for the existing house on parcels less than <br />5 acres during subdivision.^ This is trensure thit ^he <br />subdivision will not create future problems in reoairino <br />existing systems if repairs become necessary. The applicant