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Project: California Army National Guard, FMS24 <br />Log of Soil Boring: <br />Location: 8010 South Airport Way, Stockton, CA Project Numberi8600251 <br />FMS24SBO2 <br />Dates Drilled: 5/1107 <br />Bit Type: HSA <br />Total Depth Drilled: 60 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 M5T Rhino <br />Hammer: wt. 140 lb. Drop 30 in, <br />Location: About 60 ft north of former diesel UST. <br />Pro (ppm) <br />CLu > N <br />Gj c v o �1 V Graphic <br />Sample ID �, Log LITHOLOGY DESCRIPTION BOREHOLE COMPLETION <br />F�� �q <br />0 <br />1139 <br />. 0 : Hand auger to 5 <br />1 <br />---------------- -------------------o::::o.: feet bgs. 1 <br />LEAN CLAY (CL), brown (10YR 413), damp, 90% fines, 10% fine "' q: <br />sand, medium plasticity, no dilalency, medium toughness, high dry Q::: D:: <br />2 <br />strength, no odor. 2 <br />G Backfil[ed with <br />O�.neat cement grout. <br />3 <br />D:::: D : 3 <br />4 <br />:o0 4 <br />5—X lolls <br />'D:•':D: 5 <br />6- 0.0 0.0 <br />_oo' 6 <br />Color change to brown (10YR 513), moderately cemented nodules, <br />7 <br />D:::D.: 7 <br />: O: <br />8 <br />0. 8 <br />:p 0 <br />9 <br />Q::: Q: 9 <br />:�.0: <br />0 <br />-- O' 10 <br />18/18 <br />� = <br />SILTY SAND (SNI), brown (1 OYR 413), dry to damp, 55% fine sand, D : � : <br />=- <br />45% fines, micaceous, no odor. 0 O <br />0.0 0.5C>gip: <br />12 <br />_ = <br />p �' 12 <br />13 <br />= = <br />13 <br />'p0: <br />_ <br />14 <br />_ - <br />0 14 <br />15 <br />-- <br />-• <br />--------------------------------�--- <br />—FAT <br />18118 <br />CLAY (CH), brown (10YR 413), moist, 90% fines, 10% fine Q Q' <br />sand, high plasticity, no dilatency, high toughness, high dry strength, <br />no odor. <br />p0' 16 <br />0.0 0.7 <br />-------------------------------- <br />SANDY FAT CLAY (CH), brown (I OYR 413), moist, 60% fines, 40% Q <br />17 <br />fine sand, high plasticity, no dilatency, high toughness, high dry .. 17 <br />strength, no odor. .p0: <br />18 <br />0. 18 <br />'q : <br />19 <br />—19 <br />20 <br />•-- ------------------------------------------ <br />SCO 20 <br />2870 Gateway Oaks Dr., Ste 150 <br />Sacramento, CA 95833 <br />916-679-2000 <br />