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II <br />f <br />t . <br />■i/ <br />Cl> <br />\ <br />I *1 <br />I <br />\) <br />I} <br />I ‘ <br />■ •! <br />Ll <br />I'lol iininary S*.nl aiul J .c oi* the <br />Victoria Grain t!o. Subdivision in Orono <br />n <br />Dark <br />Blue <br />Medium <br />Blue <br />Medium <br />Bluew <br />Medium <br />Red <br />Dark <br />Red <br />< <br />S. Marsh: <br />The map symbol for this soil is Ma and the map color is dark blue. <br />The ripper 5 to 10 feet of tlie marsh is peaty muck or muck. This <br />covers other layers fonned in what was formerly a glacial lake. The <br />watertable is near or above the surface the entire year. These soils <br />have very low bearing capacity. 'Hie develo|)mcnt characteristics of <br />these soils are generally uiitavorablc. These areas are best used for <br />natural water storage and as scenic open space areas of developments. <br />IV. SOIL POTENTLM t-QR DISPQS/Vl. /\ND TRllYrNfliNT Of SfiFriC TAN’K EFFLUENT <br />A discussion of each soils potential for the disjiosal and treatment of <br />septic tank effluent follows: <br />1. Glencoe silty clay loam - Gc: <br />This is a very poorly drained soil occuring in depressions and drain- <br />ageways. The soil may be subject to ponding during wet periods of <br />the year. Installation of any on-site soil absorjjtion systems on <br />soils of this type sliould be prohibited. The presence of the seas­ <br />onal watertable at or near the surlacc would interfer with the proper <br />functioning of an on-site soil absorption system. <br />2. Hamel loam - Ha: <br />This is a poorly drained soil occuring in depressions and drainageways. <br />The maxinojm level of the seasonal perched watertable is within 1 foot <br />of the surface. Installation of an on-site soil absorption system <br />on this soil is miaccentab^. The presence of tliis watertable will <br />result in the nmtunct.ion oi the soil absoi*ption system leading to the <br />surfacing of the sewage effluent creating a public health hazard. <br />3. Kilkenny loam - KkB, KkC, Kkl): <br />These soils are well-drained upland soils. The watertable is generally <br />well below 5 feet. Kilkenny soils have higher silt and clay contents <br />than other soils in this area. The IJSDA textural classification for <br />the subsoil is clav Io:un. This results in ven’’ slow infiltration <br />0 #rates. Usually tlie norcolatjnn r.*ifT»< nn ;irp <br />slower than the bO minutes ner inch required bv the present Minnesota <br />Sewage (iodc. This would proiiibit the installation of conventional <br />on-si to soAl absoiptioii systems consisting of a septic tank with <br />absori^tion field. <br />Kilkenny soils may in some cases be utilized for waste disix)sal and <br />treatment if an innovative mound system is installed. The following <br />conditions must be met: <br />a). rat£ - The I'ercolation rate in 12 inches or more of <br />nTiTural surlace soil shall be faster than OO minutes per inch <br />■VI <br />*