09-22-2004 Council Agenda - Laserfiche WebLink

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Aug 26 04 07:55a Jon Whitcomb RUG 25 '04 02 :37PM BRAUN INTERTEC 651 -430 -0029 P.8 P.8/23 Wesley Investments, Inc. Project SP-04-03734 May 21, 2004 Page 3 B.3 e. Glacial Till. Beneath the swamp and lake deposits, or in the case of Boring ST -3 irnuiediately below the topsoil, the borings encountered and terminated in glacial till. The glacial till consisted of sandy Jean clay (CL) and clayey sand (SC) that was moist to wet, gray and reddish brown. and contained traces of gravel and cobbles. B.4. Penetration Resistances .Penetration resistance tests were performed at regular intervals in the borings and the results of these tests are shown an the Log of Boring sheets in the column marked 'BPF" (blows per foot). Penetration resistances recorded in the swamp and lake deposits ranged from 2 to 7 BPF, indicating very loose to loose and rather soft soils. Penetration resistances recorded in the glacial till ranged from 4 to 37 BPF, but were typically 10 BPF or higher, indicating the glacial till was locally rather soft, but typically rather stiff to stiff. BS. Groundwater Groundwater was observed in Borings ST -1 and ST -4 at depths of 4'/- and 5 feet, respectively, corresponding to approximately elevations 857 and 8591/4, respectively. Water was also observed in the ditch located cast of Boring ST -4 at about elevation 861. According to published topographic maps, the normal water elevation of nearby Gervais Lake is 858. Water was not observed in Borings ST -2 and ST -3, but these borings also only extended as deep as elevation 858 and 861i4, respectively. C. Evaluation C.1.' Proposed Construction C1.a. Proposed Buildings. We understand the plan is to construct multi- level, single- family homes on these lots. We anticipate that these structures will have concrete block walls below pound with full, walkout- or lookout -type basements and wood -frame construction above. For our analysis, we have assumed that foundation loads for these structures will be rather tight, with maximum wall loads of 1 to 3 kips per lineal foot, and column loads, if used, will be less than 50 kips. C.I.b. Proposed Pavements. A new residential street will be constructed as part of the site development as shown on Figure 1. We have assumed that the street will be of typical urban design with a bituminous surface and concrete curbs and gutters.