3311 GRAND AVE 2016-01-01 MF Import

�"' �� D�x H > H tn y � i�-+ � H� y yH � �� ��g CJ Y ('� �H� r+ y g �� oC� �� x H tn H O �n . la ir August 15, 1991 Mr. Bob Norling No signs of soil instability, such as tension tl soils, were observed within the subject site. water or active sprinq was observed on the site, excavated. �r eubsurface G-0126 Page 3 cracks and slumped No standing surface including the area According to the qeologic map published by the U.S. Geological Survey titled '�Geologic Map af the Everett Quadrangle, Snohomish County," by J.P. Minard, the soil unit covering the site is classified as Q�i, Vashon till. The till consists uf a non-sorted, concrete-like mixture of silt, sand, gravel with an occasional boulder. This soil unit is very hard and is commonly referred to as hardpan. It is an excellent material for supporting foundations with little or no settlement expected. The ti.11 can also stand in natural and cut slopes for long periods of time, but may ravel and spall by weathering process, such as wetting and drying and freezing and thawinq. An engineering geologist from our office examined and mapped cut banks on August 12, 1991. Representative soil samples also obtained from the cut banks for further examination and laboratory testing. The cut banks appeared to be stable practically no sloughing or spalling. the were for with ` Generally, covering the site is a 2-foot layer of dark brown, silty sand with some topsoil, underlain by 2 to 5 feet of fill of tan, �� gravelly sand. A 6-inch charcoal layer marks the bottom of the fill. Underlying the fill is a very dense, reddish brown, silty, gravelly sand that grades with �ncreasing depth into a gray, very !+ dense, moderately-cemented, silt� sand. n � A probing bar, consisting of a four-foot-lonq by 0.5-inch-diameter oeo Consultanta inc. i1 :