4701 W GLENHAVEN DR 2016-01-01 MF Import

} October. 15, 1980 Pro�ect No. 8010-1 gi-Min Homea Page 4 Several epieodee oY eite modification by filling are auggested by the preaence of quantitiee of concrete rubble and the gen- erally hummocky appearance of the elope face. We underetand that the concrete rubble and much of the fill on the alope are producte of a previoue� unsucceseful attempt to build on the site. Well developed eroaion rills mark the slope face direct- ly below the propoaed construction area. At the time o£ our study� excavation for the atructure had been atarted on the upper, gently sloping portion of the property. Earth cuta of as much as five (5) feet were observed. During the excavation of our test pita at Ileast two (2) epi- sodes of artificial fi71 ing were revealed. The youngest unit was £ound to have a thickness of three (3) feet in those areas sampled, and is believed to be associated with the previous construction activity and the subsequent razing of the unsuc- ceasful foundation system. The source of the underlying older fill material is unclear, but may be related to the early stages o£ develpoment within the immediate area. The depth of the older fill unit ranged £rom 2.7 to 4.7 feet in those areas sam- pled. A typical existing slope angle of 36° was observed. No indica- tions of substantial slope distress were noted within the sur- ficial fill or naturally occurring soila at the aite or in areas ad�acent. STRATIGRAPHY The dense naturally occurring soils encountered at depth with- in the eite are considered to be products of late Pleistocene glacial activity. A review oi available resource material and