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Project: California Army National Guard, FMS24 <br />Log of Soil Boring: <br />Location: 8010 South Airport Way, Stockton, CA Project Number18600251 <br />FMS24SBO3 <br />Dates Drilled: 5/1107-512/07 <br />Bit Type: HSA <br />Total Depth Drilled: 55 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: Vern Elarth, P.G. <br />Rig Model: Marl MST Rhino <br />Hammer: wt. 14016. Drop 30 in. <br />Location: About 85 ft east of former gasoline UST. <br />�s <br />it PID (ppm) <br />U Graphic <br />rn Sample ID pa r° Log LITHOLOGX DESCRIPTION BOREHOLE COMPLETION <br />0 <br />0 <br />Asphalt. 0 q: <br />Hand auger to 5 <br />i <br />------------------------------------- 'DO: feet bgs. 1 <br />SANDY LEAN CLAY (CL), brown (10YR 413), moist, 55% fines, <br />45% fine to medium sand, medium plasticity, no dilatency, medium 0 Q <br />2— <br />toughness, high dry strength, no odor. ::: 2 <br />Backfilled with <br />neat cement grout. <br />3 <br />pQ 3 <br />4 <br />i7::D.: 4 <br />:00= <br />5 <br />. q• 5 <br />18118 <br />6::::6.: <br />6 <br />- <br />-----_•-------------------------------'D::::'D:: 6 <br />0.0 1.1 <br />LEAN CLAY (CL), grayish brown (23Y 512), dry, 100% fines, trace 0 O <br />fine sand, medium plasticity, slow dilatency, medium toughness, high <br />7 <br />dry strength, no odor.Off. 7 <br />g <br />:p0: <br />9 <br />0.0 9 <br />.DO• <br />10 <br />- <br />-------------------------------------- 10 <br />18118 <br />SANDY LEAN CLAY (CL), brown (IOYR 513), moist, 70% fines, Q Q' <br />30% fine sand, medium plasticity, slow dilatency, medium toughness, Q::: t7 <br />11 <br />high dry strength, micaceous, no odor. 0 Q 11 <br />0.0 1.8 <br />p•••p• <br />12 <br />D:: 12 <br />Off: <br />13 <br />•i?q• 13 <br />:p 0 <br />14 <br />D::.: D.: 14 <br />L;::: 6;.: <br />15 <br />- ----------------------------------------- <br />p0' 15 <br />1811$ <br />FAT CLAY WITH SAND (CH), brown (1 OYR 513), moist, 75% fines, <br />25% fine high dilatency, high O <br />to medium sand, plasticity, no Q <br />6 <br />toughness, high dry strength, no odor, 16 <br />0.0 1.6 <br />'6::::6.: <br />17 <br />17 <br />'D: � <br />:'6:: <br />18 <br />D::::'6:: 18 <br />D::6: <br />19 <br />19 <br />120 <br />20 <br />Q G 6' <br />2870 Gateway Oaks Dr„ Ste ISO <br />Sacramento, CA 95833 <br />916.679-2000 <br />