5300 GLENWOOD AVE 2018-01-02 MF Import

, ._., �_. .... _ . . ..... . . ... . .... ..... . . . . .. ,._.. . , ..__ . -- � - . . ... Glenwoal Terrace I Filc Numbcr 126994 May 12, 1994 Pagc 6 slopc is loose,but signs of siope nrn•�mr,ni�cere not observed. Test pits excavated in 1987 in this area did not penetratc dvou�h ilic till. Cut Sfope Acea: 'ii�e south and west portions of Uic sitc are underlain at depth by ouhv�sh. 'iliis urtit is exposed in the lower portions oC die stccp cut. 'Il�c ouAvuh consists of liglit gray to light tan,dense, fine to mcdium sand with trace amounts of silt a��d interbedded zones af gravel and silty sand. 'Ihe outwash is ovcrlain by glacial till. Till w�s identifed near q�e upper portion of the exposed cut. Duc to the stecp inclination of the cut, sloughage has accumuluted at the tce of lhe stcep slope. We did not observe any signs of decp-se�ted landslides, even though, somc sloug}�age and intact blocks have detach�d from the face. Detention Fond Arca: 7hc northeast portion of d�e site, N•hcro the detention pond is to be located, is undcrlain at dcpth by glaciall}� dcrived material which �tiro havc classified az transitional beds (Qtb). This material consists of light bro�m, medium dense to dense, fine to medium s.vid�vith occasional coarse s�nd :uid gnvcl intcrbeddcd witl� dcnse, silly fine to mc�ium sand. '�e upper surface of the Qtb was encountered in Test Pil 6 at a depth of 13 fttt below the ground surface. 71�is deposit was uot ide�di6ed in the other test pits in lliis area. Above the Qtb matcrial the cxplorations cncountered the advance ouhvash (Qva). 71iis matcrial consists of a sand widi varying silt and gravel conlcnl. Thc top of ttie Qva �vav encountered behveen 5.5 and 10.0 fect belo�v tlie ground surfhce. Above the Qva we encountered fill that cousists of silty syid witl� gravel boulders and organics. Thc topography mnp indicatcs that lhe fill may extcnd at Icast a Pe�v fcet bclow the clevation of the bottom of the pond. Rubble Fill Area: Thc rubble fill has b��cn creatcd by past grading�ctivities on the ncighboring lot. The fill is identif�d as nibble base+l an Uie abscrved picces of rubble on Ure slope surface. We did nol perform any subsurfacc erplorations in dic neighbormg property, therefore, the dcpdi and the density cuuld not be dctcm�incd. We suspcct Umt lhe rubble fill is looscly compacted. Observation of the sudace soils indicate that the fill consists of loose to mediurti dcnsc, silty s;md with gravel,cobbles and dcbris. 71�e portion of die site adjacent to lhe rubble fill is underlain at depth by outwash. The outwasl�consists of 6luislrgray, medium dcnsc to dense, fine to mcdium sand �vilh course sand m�d gmvcl.' 7hc top of the ounr:uh r.uiges Crom 3.0 to 6.0 fext in depth. Overlying the oubvash, wc cncountered pcat. The peat consists of dark 6ro�m, loose, organic material. The surCace of the pc�t ranged from I.0 to 3.0 fcct in depth. Ovcrlying Uie pa�t, we eowunterccl similar fill to that described in thc gcncral subsection. NELSON-COUVRETTE& ASS�C(ATES, INC. FFA--23-1446 12�04 2f�5 481 2510 967. P.08