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-I <br />Trmci I <br />Eat <br />etIoD 76 <br />■rUri d. <br />»t qiiarU <br />w itfl <br />r of Iff <br />•rolgr co. <br />Mi tUt«} <br />Ihm sUt« <br />Janes Lavrence - 1550 Sixth Avenue N. <br />Subdivision (Preliminary) <br />Page 3 <br />STAFF - December 9, 1977 <br />Receipt of ovner's engineering report and soils report from Hennepin Soil and <br />Uater Conservation District. <br />STAFF - December 12, 1977 <br />Very brief reviev of above information: <br />Lot 1 - boring and perc'a uphill of house on 12^ slope - <br />possible sldehiU seepage concern, <br />bouse located on slope • major erosion concern <br />no drlvevay Indicated <br />flat area of lot is Glencoe loan <br />critlceJ. lot factors indicate close reviev of this site <br />Lot 2 - boring and perc's on 6 • 10$ slope very near to Glencoe* loan identification' <br />Lot 3 boring and perc's on 20$ slope leading to creek and drainage easement • <br />measures 6o feet between hoxise and easement; all sloping. <br />water table above 7 feet indicates mound design <br />perc rate imacceptable 120 npi. (mound does not alter pero rate) <br />no access location indicated • requires eul'vert over creek and watershed <br />approval. <br />critical, lot factors indicate close re'vlev of this site <br />Lot ^ •boring and perc's on T$ slope leading to creek • measures 8o feet betweeoi <br />bouse and easement. <br />water table above 7 feet indicates mound design <br />no access indica'ted • requires eul'vert over creek to new cul-de-sac or <br />to vest easement <br />Lot 5 <br />• <br />OiV, <br />Mutes Lot 6 <br />U50 - <br />lONG , <br />Lot 7 <br />Lot 8 <br />existing house - perc's taken on slope of approximately k$ - <br />■very slow rate indicates saturated aoil near existing drain field area. <br />This is also, theoretically, the better soils on this tract. <br />boring and perc's on 10^ slope in Hamel loam, not Hayden aa listed in the <br />Hickok letter. <br />Very high water table indicates special mound design. <br />boring and perc's on 10$ slope <br />'water table above T$ Indicates mound design <br />no drlve'way indicated <br />boring and perc's on 5)( slope - <br />perc rate marginal 60 aq)l. - <br />no drl'vevay Indicated, but 20^ slope between road and bouse. <br />On all lots, only two perc tests taken, some marginal, others falling. Before <br />construction, our ordinance requires at least 6 perc tests cmd a design layout <br />respecting the slopes and shoving both a primary and an alternate site for each <br />house. I suggest that more tborou^ In'vestlgation be done before approving <br />Lota 1 and 3 due to the many problems apparent on these sites.