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ENGEO LOG OF BORING 4-1302 <br /> Expect Excellence LATITUDE: 37.769561 LONGITUDE: -121.419766 <br /> Geotechnical Exploration DATE DRILLED: 10/21/2021 LOGGED/REVIEWED BY: L.Becker/ZAC <br /> Holly Buildings H & I HOLE DEPTH: Approx.31'/2 ft. DRILLING CONTRACTOR: West Coast Exploration <br /> Tracy, California HOLE DIAMETER: 4.0 in. DRILLING METHOD: Solid Flight Auger <br /> 15188.000.006 SURF ELEV(NAVD88): Approx.20 ft. HAMMER TYPE: 140 Ib.Rope and Cathead <br /> Atterberg Limits <br /> N 0 <br /> w <br /> v o c �� <br /> to n <br /> a) 0 axi C' Q) H <br /> LL CL DESCRIPTION o �, �It 0.0) a, �'X <br /> c p T J U J U ,U U.N 3 .� w Q <br /> ti m <br /> n m E 3 N N a n-o aL�i a 0:2 <br /> a) a) a5 O a5 a5 C o O o U L L C m <br /> ❑ Lu (n J > m J LL LL LL ❑�' (n (n <br /> _AGGREGATE BA_SE ___ <br /> CLAYEY SAND WITH GRAVEL(SC),grayish brown <br /> medium dense, 15-25%fines, 15-20%gravel,contains <br /> asphalt and brick,contains carbonates <br /> [UNDOCUMENTED FILL] 39 <br /> Grades to loose <br /> 8 <br /> 5 15 <br /> 15 <br /> Grades to dark grayish brown,30-40%fines <br /> ----------------------- <br /> SANDY LEAN CLAY(CL),grayish brown mottled with <br /> N bluish gray,stiff,moist to wet,low plasticity,iron oxide <br /> present,contains rootlets,40-50%fine-grained sand <br /> 10 10 [NATIVE] <br /> 0 <br /> c� <br /> ti17 <br /> z 23 108 1.25* PP <br /> 0 <br /> LUz <br /> LU <br /> 0 <br /> N <br /> a] <br /> 7 <br /> F <br /> O <br /> a] <br /> V <br /> of15 5 -- --- ------------ -- <br /> g SANDY SILT(ML),very dark bluish gray,medium stiff, <br /> wet,low plasticity,40-45%fine-grained sand,high 16 <br /> dilatancy <br /> POORLY GRADED SAND WITH SILT(SP-SM),very dark <br /> LU greenish gray,wet,medium-to fine-grained sand,5-12% <br /> u, fines <br /> 0 <br /> J <br /> U0 <br /> ______________________--- <br /> z= LEAN CLAY WITH SAND(CL),dark greenish gray, <br /> 0 medium stiff,wet,low plasticity, <br /> 20-25%fine-grained sand <br /> 0 20 0 <br /> 0 <br /> 0 <br /> 0 <br /> J <br />