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Project: California Army National Guard, FMS24 <br />Location: 8010 South Airport Way, Stockton, CA Project Nulnber18600251 <br />--------------- <br />Dates Drilled: 5/2/07 Bit Type: HSA <br />Drilling Contractor: Gregg Drilling Borehole Diameter. 8.25 -inch <br />Drilling Method: Hollow Stem Auger Sampling Method: CA Modred Split Spoon <br />Rig Model: Marl MST Rhino Hammer: wt. 140 lb. Drop 30 in. <br />Log of Soil Boring: <br />FMS24SB04 <br />Total Depth Drilled: 60 feet bgs <br />Logged By: Margaret Hogaboom <br />Checked By: yarn Elmth, P.G. <br />/ , c <br />Location: About 65 R south of former USTS. <br />� <br />Z <br />e <br />PID (ppm) <br />c <br />G7 <br />'+t <br />c <br />N c <br />Graphic <br />i✓ <br />h SampleID <br />on y Log LITHOLOGY DESCRIPTION <br />Asphalt. <br />1 ------------------------------------- <br />SANDY LEAN CLAY (CL), brown (1OYR 5/3), moist, 70% fines, <br />30% Md. medium plasticity, no dilatcncy, medium toughness, high <br />2 ; : _ : ' . dry strength, no odor. <br />BOREHOLE COMPLETION <br />0, <br />Hand auger to <br />fat Z. <br />0. Backfilled with <br />oO.neat cement grout. <br />D: <br />�O <br />7253 18/18 - __ <br />- __ ------------- - <br />---�- -� - -__ <br />. Caliche, dry to damp, low plasticity, slow dilatancy, low toughness, <br />6 2 : 2 : medium dry strength. <br />0.0 4.3 ._ _. ___________________________________ .. <br />SANDY LEAN CLAY (CL), brown (10YR 5/3), moist, 70 %fines, - -_ D D � i <br />7 30% sand, medium plasticity, no dilatency, medium toughness, high O <br />drystrength, no odor. p D : D G <br />8 <br />Op: <br />9 p p' <br />D. Dq: <br />10if5i:D: <br />1257 ISM - - - - - - -------- ------- - - - - -- ___ __--- O.q <br />SANDY LEAN CLAY (CL), brown (IOYR 4/3), moist, 55% fines, D ::: D: <br />45% fine to medium sand, medium plasticity, medium dilateacy, <br />0.0 0.6 Q <br />11 medium toughness, high dry strength, no <br />stren <br />12 <br />D� D: <br />13 <br />14 <br />- —... <br />CLAYEY SAND (SC), brown (IOYR 4/3), moist, 80%fine m D ::: D <br />medium Md. 20% fines, slight hydrocarbon -like odor. <br />15 1300 14/18 <br />O� <br />16 <br />0.0 0.4 O: <br />17 Obi <br />Gni <br />18 <br />Op.` <br />C0 <br />UM2870 0. .y 0alu t,., Ste 150 <br />S. .m , CA 95833 <br />916579-2000 <br />7 <br />-10 <br />-11 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br />18 <br />