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Project: California Army National Guard, FMS24 <br />Log of Soil Boring: <br />Location: 8010 South Airport Way, Stockton, CA Project Number38600251 <br />FMS24SB05 <br />Dates Drilled: 5/3/07 <br />Bit Type: HSA <br />Total Depth Drilled: 50 feet bgs <br />Drilling Contractor: Gregg Drilling <br />Borehole Diameter; 8.25-inch <br />Logged By: Margaret Hogaboom <br />Drilling Method: Hollow Stem Auger <br />Sampling Method: CA Modified Split Spoon <br />Checked By: Vem Elarth, P.G. <br />Rig Model: Marl M5T Rhino <br />Hammer: wt. 14016. Drop 30 in. <br />Location: About 50 ft west of former diesel UST. <br />PID (ppm) <br />j N o <br />v <br />0 Graphic <br />E Sample 117 Log LITHOLOGY DESCRIPTION BOREHOLE COMPLETION <br />92 <br />4 <br />Asphalt. � ::: 0 <br />0' Hand auger to 5 <br />1 <br />-------------------------------------- feet bgs. 1 <br />LEAN CLAY WITH SAND (CL), brown (10YR 413), dry, 75% fines, 0 �' <br />25% fine to medium sand, medium plasticity, no dilatency, medium <br />2 <br />toughness, bigh dry strength, no odor. 0 0 2 <br />Backfilled with <br />F/-0- <br />neat cement grout. <br />3 <br />QD.: 3 <br />- <br />----------- ----------------------- ---Q ; <br />CLAYEY SAND WITH GRAVEL (SC), dark grayish brown (2.5Y <br />4 <br />4/2), dry, 60% fine to coarse sand, 15% fine to coarse gravel, 25% 0 : 4 <br />fines, no odor. <br />5 <br />18/18 <br />LEAN CLAY (CL), brown (10YR 413) mottled with white splotches, :: 5 <br />0 <br />dry to damp, 90% fines, 10% fine sand, medium plasticity, no D <br />dilatency, medium toughness, high dry strength, no odor. <br />6 <br />Q' 6 <br />0.0 0.2 <br />2-inch caliche layer, color change to light olive brown (2.5Y 5/3). <br />7 <br />D::.: D.: 7 <br />8 <br />O' <br />9 <br />10 <br />4 10 <br />18118 <br />Color change to brown (IOYR 5/3), damp. <br />0.0 1.0 <br />O <br />12 <br />12 <br />13 <br />.: 13 <br />14 <br />'D O 14 <br />i�;.:::D.: <br />JFAT <br />15 <br />CLAY WITH SAND (CH), yellowish brown (10YR 514), moist, <br />15 <br />18118 <br />75% fines, 25% fine to medium sand, high plasticity, no dilatency, Q <br />high toughness, high dry strength, no odor. <br />16-16 <br />0.0 0.6 <br />D:::: D.: <br />pp <br />17 <br />:�0: 17 <br />18- <br />18 <br />19 <br />•0�: 19 <br />20 <br />-- -- <br />--------------------------------------� 20 <br />2870 Gateway Oaks Dr., Ste t50 <br />Sacramento, CA 95833 <br />916-679-2000 <br />