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f <br /> i <br /> Wright Environmental Services, Inc., Tracy, CA Exploratory Boring Log <br /> v <br /> Fation <br /> ect No 4090 Boring/Well No PB-17 Well Installed No <br /> nt Cox and Cox Date Drilled Apr 19, 2001 Total Depth 24' <br /> 595 E_ 11th, Tracy, CA Logger CMCement Grout Seal 24' to surfaceP seal set by tremae line filled from <br /> Drilling Method 3" OD Geoi'robe botom to top of borehole <br /> Permit. PHS EHD 0025693 <br /> Water Levels 1st Enc 11-12' Static NM <br /> Borehole <br /> Sample Cont a Depth Llthoiogy Log Completion <br /> No PID Push m (ft) <br /> Asphalt Pavement ;•� <br /> ML - Sandy SILT, brown 10Yr 5/2, nonplastic, f sand 40%, <br /> 8-17 1 8 possible Class Il fill <br /> A w <br /> w w <br /> CL-SC - Sandy CLAY to Clayey SAND, dark gray brown, <br /> 5 low plasticity, f crs sand 40-60%, massive, med dense/ <br /> ,a-17 stiff, damp "�"• <br /> 2 1 5 <br /> PS-17 i 0 <br /> 625 SC/CL - Interbedded Clayey SAND and Sandy CLAY, stained gray, <br /> 3 low plasticity, f crs sand to 70%, and occurs as interbeds, "•w <br /> clay interbed at 12 feet, stiff/med dense, becomes saturated <br /> by 11-12 feet <br /> 17 Same as above, me m silt at 15-16 feet, stained to 14', "•"- <br /> 41 2 <br /> 15 firm/med dense, varies moist to saturated 12-14' <br /> AB-17 SP-SW - SAND, brown f crs sand 90%, crs sand be <br /> 153 d at 16- <br /> $ 17 feet, then change to SP, massive, no stain, med dense, <br /> 20 saturated ; <br /> ,s 17 Borehole collaspes, unable to sample, readvance water sampler ; <br /> w•" <br /> s - to 24 .:. <br /> " w <br /> 25 <br /> Bottom of Boring = 24 feet <br /> Reconnaissance groundwater sample <br /> I F <br /> interval 24 to 21 feet <br /> Reviewed by RGICEG <br />